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Our First “New” Newsletter!

Over the next few months, we’re changing up our newsletter by featuring our people, customers and partners. We’ll share these stories here, on LinkedIn and on our website. If you would like to be featured, give us a call or contact us.

Partner Spotlight

PSS Governor Services

PSS Governor Services prides itself on getting the job done—and done right. For over 20 years, Dave and his team have serviced governors on and off the ship, as well as providing repair services and genuine factory parts for land and sea needs.

Dave received a call from a customer who had installed a new pump and an electric governor system, including a GAC ADC100-12, in a John Deere engine—but it was not running as hoped. After reinstalling the original pump and tuning the GAC actuator, the engine ran perfectly. Dave suggested they take the old pump and the new pump to a fuel shop and verify they are built and calibrated the same. It’s often the details that matter most—and Dave is very detail oriented.

An airport ground support company called with a unit down. The GAC ESD5221 Control replacement part was in stock and ready for will call.

“What goes into PSS Governor Services will always come out better.”

– PSS Customer

Who You Gonna Call?

An application support engineer’s main job is to satisfy customers. Our support engineers do this daily, providing customized solutions and helping customers and partners find the best GAC product to meet their needs. On average, our application support engineers take on 10 requests for help each day, with over 90 requests coming in every month.

GAC support calls tend to fall into three categories: finding a known solution to a particular engine, giving advice on improving a customer’s system or helping to get an engine back online quickly.

Recently Steve, our all-around engine guy, started his day with a call from a customer looking to replace a Woodward governor on a Mitsubishi engine. The next call: what controller works with a Daewoo engine? What actuator can I use on a Bosch MW pump? How about something for a Deutz? What can I use for a governor on a 2-cycle Harley engine being used as a cement grinder? How do I get overspeed under control? For Steve, the day goes on, but each question often evolves into a friendly exchange of ideas and solutions.

Meanwhile, across the hall, GAC’s chief support engineer received a call from the middle of the ocean. Somewhere in Alaska, a ship’s generators were acting up and running too fast. On a ship, the generator is more than just lights—it powers almost everything, including the freezer where their catch is stored. The ship’s chief engineer and his handler had not slept for two days and were not making any progress. They called us for help; otherwise, they would need to return to shore, with the ship’s hold half empty.

Our chief engineer worked with the ship’s engineer to identify an electrical grounding issue. By configuring GAC’s ESD5500 controller, the engine returned to proper working order. Now, they had power and could get some sleep. The solution let them finish their trip and the job they had set out to do.

Our application engineers wear many hats, but their number one job is to provide customers with solutions. Our customers are smart; they know their engines. In that rare case when they cannot solve something, they know they can trust us to help them find an answer.

FAQs from You

The following is a sampling of answers to questions we received this past month. If you have a question, please let us know!

Is a new catalog coming out soon?

YES! We are currently working on a new catalog with our marketing partner, Market Mentors.

I’m looking to replace a BC DYN1 10606 speed control; what do you suggest?

The ESD5111 will give you a simple swap-out.

I need to replace the governor on my CAT3408. Any suggestions?

Yes. The ADC225S actuator paired with the ESD5111 will be a suitable replacement

My Cummins GTA 5.9 will not go above 50 Hz under load. How do I solve this?

A customer had installed a GAC ESD5500E on a Cummins GTA 5.9 with a WW EPG 12-volt actuator. However, the customer found they could not go above 50 Hz with a load—and 60 Hz without load. After walking the customer through some measurements, the actuator was pulling 5.5 A under load. The answer was to add a jumper between terminals H and G of the speed controller. As the installation guide noted, for 12 V systems with actuator currents above 5 A, the controller may sometimes require a jumper between terminals H and G.

Around the GAC Office

We welcomed the holiday season with a company end-of-year highlight and service award ceremony. Sean Collins, GAC’s president and CEO, led the festivities. Recognizing that the company has gone through a long couple of years, between COVID-19 and logistics and supply chain issues, Sean thanked everyone for weathering the storm well.

The highlight of the event was the presentation of service awards: one for five years of service, two for 10 years, two for 15 years and three for 25 years—that’s a total of 130 years of service! For an almost 40-year-old company, it was quite impressive.

GAC is Closed for
Presidents Day
February 20th 2022

Product of the Month: Fuel and Ignition Management System (FIMS)

For Gaseous-Fueled, Spark-Ignited Engines

The Fuel and Ignition Management System (FIMS) provides a low-pressure advanced engine management solution for gaseous-fueled, spark-ignited engines and is designed to meet tough exhaust emission control standards in the United States and across the world.

GAC provides two ways to manage control. The Air/Fuel Ratio Control (AFR) and Ignition Control Module (ICM) 200 Series together provide a low-cost solution to meet emissions standards. The AFR control creates a closed-loop fuel system when combined with five simple components:
• A digital precise stepper motor fuel control valve to adjust the flow of fuel into the system or into the static venturi mixer
• An electrically controlled throttle body valve or universal actuator to control the flow of the air/fuel mixture that enters the engine intake manifold based on engine speed and load
• An oxygen sensor that provides feedback to control how lean or rich the fuel mixture is
• A Manifold Absolute Pressure (MAP) sensor to determine engine load

The Ignition Control Module (ICM) Series controller is an intelligent electronic control module that is part of GAC’s distributor-less ignition system.

The complete-system approach results in a cost-effective solution that offers the greatest potential for improvements in both engine efficiency and exhaust emissions.

Application of the Month

FIMS Generator

Using GAC’s Fuel and Ignition Management System (FIMS), two Scania DC13 072A engines power a 270 KW generator supporting three water pumps in a Brazilian town.

The GAC ATB throttle body combined with the AFR speed controller is set to run these engines lean, saving fuel for the town.

This generator runs efficiently, consumes less fuel and produces more power.

GAC Products Used in This Solution

ATB75T4N14

AFR201

MXLB75

RPR102

Out and About

Teaching the Next Generation About Manufacturing

“Can you teach me how to make that?“ asked one of the 30 students from the Duggan Academy in Springfield, Massachusetts, during a tour of GAC’s manufacturing floor this past December.

Part of a partnership between Duggan Academy and the Spark Photonics Foundation, the tour was meant to introduce the students to careers in manufacturing.

The 8th and 11th graders, who were all wearing safety glasses and doing their best to stay within the yellow ESD lines, gained a real-world look at how engine control systems, actuators and electronics are built. The students also learned how a manufacturing plant functions through stops at the quality, assembly and, automation areas as well as the machine shop.

The visit began with a welcome from the president, CEO and owner of GAC, Sean Collins.

“I am passionate about manufacturing and passionate about the next generation being a part of manufacturing,” Collins told the students. “Making things is important to our country.” He explained that GAC is a vertically integrated manufacturer which means they both design and build products. Collins told the students to remember: “The only person to get you where you want to go is you.”

During the tour, GAC’s manufacturing engineer manager asked the students, “Do you like to make money?” After receiving a loud “Yes!” the manager used their answer to explain how a manufacturing plant must make the best use of time and space, as this ultimately affects how much money the company makes.

The students asked some great questions such as, “How much does it cost to make a coil?” and, “What do you do when the part is bad?” after they heard about what quality means from the quality manager.

“It’s extremely important to get them out and let them see what it means to be in manufacturing, to get them thinking,” said Vanessa Mahoney of the Spark Photonics Foundation , which is an integrated photonics services firm based in Waltham, Massachusetts.

GAC volunteers also spoke with many enthusiastic 11th– and 12th-grade students at the Springfield High School of Science and Technology. According to the volunteers, the students were engaged and excited to learn about manufacturing in the Pioneer Valley.What’s New?

Career Day at Springfield High School of Science and Technology

TechTips

The GAC KT317WB-AFR

The GAC KT317WB-AFR, a ready-to-use lean burn adapter kit for FIMS500 AFR2XX Series controllers, determines how rich or lean an engine is running at any load. Performance and operational settings are adjusted and viewed in “real-time” using GAC’s SmartVU software. The adapter kit is available in 12 or 24 V DC and provides:

• An 0.8 to 1.5 λ range.
• A plug-and-play lean burn solution.
• An included wide-band Bosch LSU4.2 Sensor.
• An accurate wide-band to narrow band conversion.

Happy Holidays!

Office Closures

Our office will reopen after the holiday season on January 3, 2023.

HAPPY HOLIDAYS!

GAC is closed for the holidays
starting December 23rd.
We will reopen January 3rd 2024

Product of the Month: ESD5526E Speed Controller

Offering Isochronous, Droop and Variable Operation

The ESD5526E, part of the ESD5500E Series of GAC speed controllers, is designed to precisely control engine speed with rapid responses to transient load changes. Ruggedly built to withstand all engine environments, the ESD’s Starting Fuel and Speed Ramp features minimize engine exhaust smoke experienced before attaining engine operating speed, providing a smooth response.

ESD5526E

Features:

  • Simple Installation and Adjustability
  • Adjustable Droop and Idle Circuits
  • Accessory Inputs for Load Sharing
  • Variable Speed Operation
  • Reverse Battery Voltage Protection
  • Soft Coupling and Lead Circuit Options
  • Multi-V DC
  • Light-Force (Low-Current Optimized PID)
  • Anti-Windup Circuit (Gaseous)

The ESD speed controller is recommended for T1/T2 ATBs . It is compatible with all GAC proportional actuators except the ADB335 and ACB2001 electric actuator since this high torque actuator also requires current limiting.

GTA 8.3L 6-cyl Turbo After-Cooled Natural Gas Engine
GTA 8.3L 6-cyl Turbo After-Cooled Natural Gas Engine
GTA 855 (14L) 6-Turbo After Cooled Natural Gas Engine
GTA 855 (14L) 6-Turbo After Cooled Natural Gas Engine

Out and About

The 2022 AUSA Annual Meeting & Exposition

GAC’s Sean Collins and Terry Tackett attended the 2022 Association of the United States Army (AUSA) Annual Meeting & Exposition to learn more about planned Army modernization, including cyber security, digital warfare, acquisition supply chain, manufacturing and improvements, which are passionate topics for Sean. They also came across some very cool warfighter tools: battlefield armed drones.

Over 30,000 people attended the event, including representatives from more than 90 countries.

Sean Collins and Terry Tackett

What’s New?

The GAC Website!

GAC has a new and improved website!

New features include:

  • Simplified access to find and read about our products
  • Quick search access from the front page
  • Quick requests for quotes

Happy Holidays!

Upcoming Closures

We will be closed to take inventory from November 29 through December 2, and will be closed December 24 through January 2 for the holidays. We wish all of our customers and their families the happiest of holidays and best wishes for 2023!

Product of the Month: 175 Series Actuator

Integrated Pump Mounted Actuators

The 175 Series Integrated Pump Mounted Actuators are field-proven proportional actuators designed to mount directly to Bosch P style fuel injection pumps to achieve an integrated proportional servo fuel package. The design has no sliding parts, and its components are sealed, resulting in outstanding reliability with no maintenance required. The design is versatile with numerous options and mounting kits available to adapt to other fuel pumps.

  • 12/24 V DC
  • Fast response; less than 35 ms (10–90%)
  • Mounts directly to fuel injection Bosch P style pump in place of a mechanical governor
  • Optional orderable features include feedback sensors and shutoff levers
  • Supports right-hand racks
  • Adjustable fuel limits
  • Manual shut-off mechanism
  • A large variety of installation kits are available

Application of the Month

175 on a FAW Engine

This FAW Jeifang (Wuxi Diesel) CA6DF2-17D / 125 kW / 1500 rpm / 24 V DC with Shanghai Denso in-line pump with RSV Type Governor is used in a Synchronized Power Generation application.

The conversion to a GAC ADD175A-24 actuator with installation kit KT175-RS-R and ESD5500E controller was quick and easy.

  • Actuator: ADD175A-24
  • Governor: ESD5500E
  • Installation Kit: KT175-RS-R
  • Connector and Harness Assembly: CH1215
  • Magnetic Speed Pickup

Tech Tip

MSP Installation

Selecting and installing an MSP may seem complicated, but with some basic information, you can do it right.  

  1. If no mounting location is available, drill and tap a hole in the flywheel housing. The threaded hole should be centered over the flywheel ring teeth, and perpendicular to the center line of the crankshaft.         
  2. Insert the magnetic speed pickup into the hole and turn it until the magnetic speed pickup makes contact with the face of the gear.  
  1. Back out the magnetic pickup by turning it counterclockwise about 3/4 of the way. The gap between the pickup and the gear should be between 0.020–0.035 in [0.50–0.89 mm]. Digital speed controllers may require less gap (1/4 turn) to provide an optimal signal similar to the Sensor Output shown here.       
  2. Twist the wire leads for their entire length from the magnetic speed sensor to the control unit. Shielding is required if external interference is present, or the leads are longer than 10 ft [3 m].

Closing Notice

Thanksgiving

Our office will be closed on Thursday, November 24thand Friday, November 25th for Thanksgiving. We will return your calls on Monday, November 28th.

See GAC videos and playlists on You Tube for details!

Product of the Month: EEG7000

Enhanced Electronic Governor

The EEG7000 Enhanced Electronic Governor is designed for use with industrial engine applications for generator sets, mechanical drives, compressor pumps and off-road mobile equipment.

  • Mini – ECUTSC1 Control Capable with Diagnostic Messages (DM)
  • Isochronous, Variable or Customizable Droop Governor
  • 3 Fixed Speeds or Variable Speed with Direct 0-5V, 5kὩ, or 4-20mA Input
  • Built-in USB Port for Easy Configuration with Free Software
  • Engine Hour Meter and Service Timer
  • Built-in Speed Switch Output for Crank or Overspeed
  • Black Smoke Reduction, Speed Ramp Control, Load Sharing / Synchronizing Option and Cummins EFC Capable
  • Fully Sealed, IP67
EEG7000
EEG7000

The 7000 precisely controls engine speed and quickly responds to transient diesel and gaseous fueled engine loads. When paired with a GAC actuator, the 7000 is a significant upgrade for any mechanical governor system that needs flexibility, precision and accurate speed control. In addition, the EEG7000 is quickly programmed through a USB port using the GAConfig Tool, consolidating popular features of past programming tools into a user-friendly, compact package. The 7000 can also be controlled directly over J1939 with other aftermarket displays.

Out and About

GAC’s Sean Collins Participates in a Fireside Chat with General David H. Petraeus at EGS

“Success in life is dealing with hurdles, setbacks and mistakes,” says General David Petraeus to his moderator Sean Collins, President of GAC, at the Electrical Generating Systems Association (EGSA) fall conference in Minneapolis, Minnesota, last month.

Retired General David H. Petraeus, former Director of the CIA and current partner at KKR, a leading global investment firm, discussed the world’s energy grid and future power needs for both military and domestic use.

GENERAL DAVID PETRAEUS WITH EGSA MODERATOR SEAN COLLINS
Photo by: Thomas Cronshaw (thomascronshawphotos.com)

“Given many years in the war zones, I have a deep appreciation for those who generate power and keep generators going. Thanks for the opportunity to spend time with you and thanks, Sean Collins, for guiding our conversation so smoothly,” said Petraeus.

Petraeus shared his thoughts on the general state of the world’s power systems, discussing the strategic challenges that America is currently facing. “Success in life is dealing with hurdles, setbacks and mistakes,” said Petraeus. These hurdles, he explained, include future needs for remote power at military bases and setups as well as the necessity for having a diverse power strategy available for domestic use.

Petraeus discussed past and present power and infrastructure requirements in Iraqi neighborhoods, U.S. domestic power grid needs and the use of renewable energy for remote military, and answered many questions on the power diversity needs here at home in the United States.

The positive feedback from the attendees was consistent throughout the conference. Collins stated, “It was great to see General Petraeus again. His ability to address the complex questions on energy, power generation and other diverse subjects was just amazing.”

General Petraeus, a prominent U.S. military figure of the post-9/11 era, is described as a leading warrior intellectual. “One of the great battle captains in American history,” says Admiral Mike Mullen.

GENERAL DAVID PETRAEUS WITH SEAN COLLINS
Photo by: Thomas Cronshaw (thomascronshawphotos.com)

Tech Tip

Using an External Potentiometer

A single remote speed adjustment potentiometer can be added to the ESD5xxx to adjust the engine speed continuously over a specific speed range. 

  1. Select a potentiometer with the desired speed frequency range and corresponding potentiometer value. Select the next higher range if the exact range cannot be found.
  2. On the GAC ESD5xxx series speed controllers, connect the speed range potentiometer to the ESD to terminals G and J. Add a small amount of droop to maintain engine stability at the minimum speed setting.
  3. At the maximum speed setting, governor performance will be near isochronous, regardless of the droop adjustment setting.
  4. Place a fixed resistor across the potentiometer to obtain the exact desired range.
Speed Frequency RangePotentiometer Value
900 Hz1K
2400 Hz5K
3000 Hz10K
3500 Hz25K
3700 Hz50K

Need Help?

Contact Us

Using a GAC solution and need help? Please contact GAC for more information.

Closing Notice

Columbus Day

Our office will be closed on Monday, October 10, in observance of Columbus Day. We will reopen Tuesday, October 11.

See GAC videos and playlists on You Tube for details!


Product of the Month: PCI105

The Power Switch Interface

The PCI105 Power Control Interface switching module can switch from 50 to 60 Hz generator frequency when combined with any ESD5100, ESD5200 or ESD5500 series controller. This module is popular with rental fleets serving domestic and international markets, as well as generator support services.

Build it here, send it there, use the PCI105 to switch to the local grid frequency rating.

PCI105

Use the PCI105 combined with a GAC controller to:

  • Test products before export or import
  • Operate equipment designed for another frequency

The potentiometers in the PCI105 let you independently adjust speed and/or frequency. The PCI105 also includes:

  • A 10-V output from the controller’s Terminal P to provide power
  • Multi-V DC
  • A 50–60 Hz Switching Module

The PCI105 also pairs perfectly with ESD5XXX Series Speed Controllers.

Power Switch Compatible Speed Controllers

When developing a solution to the 50-60 Hz switch, GAC controller are designed to make the work easier.  Using the 10-V input on any of these GAC ESD Speed Controllers you can create the solution at one frequency and ship to a location with another frequency without retuning.

GAC’s Newest Team Member

Terry Tackett

This month, we welcome the latest addition to our family, Terry Tackett, director of business development. Terry joins us after 15 years in the commercial and recreational machine markets. 

Terry is all about family—just ask him about his daughter, Olivia. So, when a former colleague told him about GAC, he was interested in joining.

“The idea of a smaller, family-owned company appealed to me, from the family culture to the long-term growth potential for my career and company,” he said.

What GAC builds is not new to Terry, as he explained, “Engine controls and communication for a machine were the centerpieces of most solutions I was involved with in my past company.”  

Terry took off running, spending his first week on the production floor and learning about the products and the GAC family. “I’m just learning which way is up!” he said. “I want to understand GAC’s products, understand GAC/Hawkeye’s true capabilities and drive new revenue for early wins and healthy future growth for the company and team.”

When asked about what he loved about business development, he said, “I like the idea of what I do making a real impact for teammates. I love what makes up sales: meeting people, creating relationships and achieving success for the betterment of all parties. My strength is building relationships, so I enjoy exploring potential relationships.”

Terry plans to start making connections once he knows who he is working to help.

“I’m not made for cubicles,” he said. “My favorite part of my job is working with people from potential customers to colleagues and all involved in our work life.”

Terry also said listening is key. “I’ve improved as a listener, a skill that’s always a work in progress! Customers will tell you their needs if you create a trusting relationship. We can then explore how GAC can develop solutions. I’ve learned this through experience, but any sales book will tell you customers buy from those they trust.”

Look for Terry to be reaching out to listen to your needs—but contact him anytime. We are aware that there are many ideas are out there, so please give Terry time to get back to you. You will be seeing him at EGSA and in an email near you!

Tech Tip

Remember to Check the Linkage

When you think the governor system is at fault, start by looking at the linkage. When using a mechanical linkage between the actuator and the fuel system, setting the linkage length and reviewing wear and tear is crucial. The most common governor-engine linkage issues are:

  • Sloppy or loose, underactive control conditions
  • Overactive control
  • Speed variations

What to Check For

When acceptable governor control deteriorates or changes, the linkage is one of the first areas to troubleshoot. A loose or worn linkage can not only cause unacceptable governor control, but also worn connection ends. Check for the following:

  • There should be no lost motion or binding in the linkage attached between the governor and the engine. 
  • Binding or friction in the linkage can cause speed variation and other problems that appear to be caused by the governor. 
  • Any free play in the linkage will cause the governor to travel the distance of the free play before any fuel change is made. The governor will become overactive and provide less than optimum control. An overactive governor will also cause excessive wear in the linkage and in the governor.

One of GAC’s most common testimonials is “I can set it up and it runs forever!” Recently, a 25-year-old unit stopped running. One of GAC’s support engineers diagnosed the problem and discovered the issue was with the governor connector assembly. Now, the controller that is back to work at its Hickory Hill Greenhouse location is this ADC225 running a gen-set using a propane-fueled Ford 2.3L Katolight Gen Set. Here’s to another 25 years providing excellent speed control and load response!

Need Help?

Contact Us

Using a GAC solution and need help? Please contact GAC for more information.

Closing Notice

Labor Day

Our office will be closed on Monday, September 5 in observance of Labor Day.

See GAC videos and playlists on You Tube for details!


Product of the Month: ALR Series Actuators

Engine Mounted Reverse Acting Linear Actuators

ALR160
ALR190
  • Simple to install—mounts in place of existing shutdown solenoid, no brackets, no linkages
  • Spring return to minimum fuel
  • Maintenance-free and cost-effective
  • Sealed actuator
  • Field-proven on a broad range of customer applications
  • High-performance linear bearings
  • High temperature with a compact design
  • Extremely fast response

The ALR Series Electronic Linear Integral Actuators mount directly to the engine’s fuel pump in place of the electronic stop solenoids. These products exhibit high-quality construction and are designed for high-temperature operation. GAC’s unique linear electromechanical technology provides proportional actuator movement, based on actuator coil current. GAC uses precision linear ball bearings instead of bushings, and a minimum number of moving parts to improve response, precision and reliability.

ALR Series Actuators are compatible with a variety of GAC analog and digital speed controllers. Two of the most popular system combinations pair an ALR actuator with the EEC328 controller or the EEG7000 digital speed controller.

Commonly Paired Speed Controllers

Compatible with all GAC light force (lower current supported) speed controllers, our popular controllers are the EEC328 (requiring no MSP) and the EEG7000, a workhorse that supports everything.

EEC328-12/24 Light Force
  • Low Current Optimized PID
  • Isochronous operation
  • No magnetic speed pickup required
  • Adjustable From 40 to 80 Hz
  • Rugged hard potted design
  • Gain and stability adjustments
  • Lower system cost
EEG7000 Enhanced Electronic Governor
  • Mini ECUTSC1 Control Capable with Diagnostic Messages (DM)
  • J1939 TSC1 Capability
  • Isochronous, Variable or Customizable Droop
  • 3 Fixed or Variable Speeds with Direct 0-5 V, 5 kὩ, or 4-20 mA Input
  • USB Port for Configuration with Free GAC Software
  • Engine Hour Meter and Service Timer
  • Built-in Speed Switch Output for Crank or Overspeed
  • Black Smoke Reduction, Speed Ramp Control, Load Sharing / Synchronizing Option and Cummins EFC Capable
  • Fully Sealed, IP67

Application Notes: ALR Solutions

Mitsubishi S4L2

The GAC SDG514 smart digital controller, combined with an ALR190-M05-12 integrated linear actuator, provides complete control of a Mitsubishi S4L2 engine, which powers a series of compact diesel welders. The ALR190-M04-12 (reverse-acting, pull actuator) connects directly to the Bosch fuel pump replacing the stop solenoid for seamless integration and incredible transient response. In addition, the SDG514 supports customer-specific settings so that every engine off the line performs the same. 

SDG514
ALR190

Caterpillar C2.2, C1.5 and C1.7

ALR190 Series Actuator and EEG6550 speed controller provide a complete electronic governing system for a Caterpillar C2.2 engine. The EEG6550 digital controller provides speed ramping control to significantly reduce visible exhaust smoke as the engine accelerates under load. The controller has the light force option that scales the PID governor range of adjustment for these small, low current actuators, providing the best resolution for ease of tuning the governor response parameters.

Puma Ocean Racing

The Puma Ocean Racing Team installed a Perkins N844 four-cylinder engine to adjust the keel on one of their sailboats. GAC’s ALR160-S04 actuator and SDG725 Smart Digital Governor support the application, which requires a fast, compact and flexible variable speed system that can be controlled from above or below deck. The ALR160 actuator replaced the PF pump shut-off solenoid, acting directly on the fuel control rack. Sea trials found this control system exceeded all expectations, sending the customer off to the races.

Q&A Help

Not Sure What ALR To Use? Try This Handy Chart.

See GAC videos and playlists on You Tube for details!

Product of the Month

GAC ATBs for Your Gaseous Solutions

Our actuator throttle body (ATB) features a spring return butterfly valve for safety, a maintenance-free design with precision bearings and min-max travel adjusting screws—making it the perfect solution for use in the harshest environments. 
 
The ATB Series integral throttle body electric actuators are designed to control the air or air/fuel mixture to gaseous-fueled engines with a conventional fuel mixer.
 
Features:

  • Cost-effective, maintenance-free, compact design
  • Rapid response to transient load condition
  • Sealed to 5.0 bar (Non-CSA)
  • Mounts in any position; no mechanical linkage, no mounting brackets
  • Flexible design for engine, manifold and fuel mixer considerations
  • Idle and max adjustment screws
  • Optimal for high temperature and corrosive environmental conditions

Our ATBs are available in a host of bore sizes to fit most engines, from 25 mm to 95 mm. 


Application of the Month

Custom Generators

SES Arrow has long supported the hardworking people in the oil industry with its custom generators. These custom-built, natural-gas Arrow A90s provide 25KW of power with our ATBs. This unit uses a GAC throttle body controlled with our ESD5131 speed controller.

ATB Sizing Chart

COMPONENTPART NUMBERDESCRIPTION
Speed ControllerATB452T2N-12ATB T2 Series Integral Throttle Body Actuator (45 mm)
ActuatorESD5131Speed Control Unit, Multi-VDC, Switchable Soft Coupling and Lead Circuit

Tech Tip

ATB Best Mounting Practices

Rigidly mount the actuator between the engine’s intake manifold and the gas mixer. The preferred mounting orientation for the GAC ATB Series is with the throttle shaft parallel to the engine crankshaft, but it can be mounted in any orientation. As a result, normal vibration from the engine will not affect the operation of the actuator.


FAQ

GAC Offers Personal Training

Did you know that we offer sales and application training? Tailored to your needs, our applications engineers can walk you through the latest solutions and offer refreshers on tried-and-true solutions that outlast the engine application.  
 
Choose from a selection of training sessions or ask us to customize one for your needs. We’re here to help.



Closed for Independence Day

Our office will be closed on Monday, July 4, in observance of Independence Day. We will resume our normal hours on Tuesday, July 5. 

See GAC videos and playlists on You Tube for details!


APPLICATION OF THE MONTH

LOWERING STARTUP SMOKE—VOLVO PENTA GEN SET

This VOLVO TAD1032 engine with a Bosch P7000 Inline pump needed a way to run smoother, quieter and with virtually no startup smoke.

The ESD5500E Series speed control unit includes features that control the fuel delivered to the engine during the start-up and acceleration.

By eliminating excess fuel, less smoke is produced resulting in environmental benefits.

COMPONENTPART NUMBER
ActuatorACB275-24
Installation KitKT275 or KT276
Magnetic PickupMSP6728C
Speed ControllerESD5500E

PRODUCT OF THE MONTH

ESD5XXX SERIES — THE MOST POPULAR ANALOG GOVERNOR IN THE WORLD

Our ESD5500E governor is a long-standing, versatile and very popular governor that can be applied to multiple engine/actuator applications. It features:

  • Isochronous, droop and variable speed operation
  • Starting fuel and speed ramping adjustment
  • Auxiliary accessory input and +10V accessory supply
  • Soft coupling/lead circuit
  • Marine certified

The ESD5XXX series controllers are available in standard, light force and light force with enhanced droop control. These controllers are also available with an anti-wind-up circuit for optimum control of gaseous fueled engines using our integrated actuator/throttle bodies, universal or linear actuators. 

EEG6500ESD55XX SeriesESD5500-II
EEG6550ESD5330EDG5500
EEG7000ESD5340EDG6000
EEG7500ESD5550/5550M/5570

TECH TIP

CONTROLLING EXHAUST SMOKE AT ENGINE START-UP

We offer cost-effective engine management solutions to reduce black smoke that replace existing governor systems to help you meet local and worldwide exhaust control emissions standards. 

A plume of black exhaust smoke is usually emitted during start-up and acceleration.  Mechanical governors are often set to over-fuel the engine to guarantee the engine starts. 

Our digital and analog governor controllers use adjustable start fuel and speed ramping features to enable the optimum compromise between start time, acceleration and exhaust smoke.

The start fuel feature sets the initial actuator position controlling the amount of fuel at cranking, while the speed ramping feature adjusts the rate of acceleration and deceleration between idle and rated speed. These parameters can be applied to both constant and variable speed applications.

The starting fuel and speed ramping adjustments control the start characteristics of the engine.  Proper adjustments provide a smooth start with minimum excess fuel to significantly reduce exhaust smoke.


NEED UPDATED GAC PRODUCT INFORMATION?

Do you need a refresh of your product information? Are you redesigning your website? Do you have a tradeshow coming up? Let us help! Contact Pam at GAC—she will send you what you need or work to create what you want.

See GAC videos and playlists on You Tube for details!

APPLICATION OF THE MONTH

WIRING TWO POTENTIOMETERS TO CONTROL ONE ENGINE FROM TWO LOCATIONS

When a customer was looking to add additional knob control to tune their Cooper 500 kVa main engines speed from both the bridge and the engineering control room, GACs local distributor Madhura, contacted GAC for a consultation.  

GAC developed a solution based on the ESD5330 and 2 potentiometers using a specialized wiring harness and paired with a ABC335 actuator.  The wiring harness supports the potentiometers in the control room and on the bridge. The design also includes a shutoff relay for safety. The customer added switches and lights in each room to indicate who was in control.  For this engine a 10K potentiometer was used, idle was set to 600 with a top range of 2000 RPM. 

The potentiometer adjusts the variable speeds in the range of 600 to 2000 RPM.  10K pots were used with this engine, with 600 RPM as idle and 1900 RPM / 2000 RPM as rated engine speed. As confirmed above we should have single controller for using on the engine instead of multiple devises controlling between each other.  The ESD5330 and the ADB335 are BV certified.

Once wiring is complete, the engine is tuned and the potentiometers are made available at both locations, the speed range is set for each potentiometer and then the engine is re-tuned to ensure gain and stability is in line with the desired engine results.

  1. Select the switch positions for the bridge potentiometer.
  2. Set 1st potentiometer to maximum position (Full clockwise)
  3. Adjust the speed setting on the ESD5330 to 2000 RPM (MAX desired speed).
  4. Repeat for the second potentiometer.

For more details call GAC for directly at (413) 233-1888.


ESD5330 SPEED CONTROLLER

The ESD5300 Series speed control unit is designed to precisely control engine speed and provide fast precise response to transient engine loads. This speed control is intended to be used with all GAC Actuators including the ACB2001. A complete closed loop control system is formed with the addition of a magnetic pickup signal sensing engine speed and 24 Volt DC power.

  • Two-element speed switch
  • Speed ramping idle to operating speed
  • Starting fuel control for lower engine exhaust emissions
  • Unique actuator power drive circuit
  • Accessory inputs for load sharing
  • Variable speed governing
  • Protection against reverse battery voltage
  • Protection against transient voltage

TECH TIP

REMEMBER TO CHECK THE LINKAGE

No matter the type of governor you are using, the physical installation of the mechanical linkage between the actuator and the fuel system is crucial.  When you think the governor is at fault, start by looking at the linkage. 

WHAT TO CHECK FOR

When acceptable governor control deteriorates or changes, linkage is one of the first areas to troubleshoot.  A loose or worn linkage can not only cause unacceptable governor control, but it can also create dangerous conditions should it fail completely and leave the engine uncontrolled.

CHECK FOR:

  • Worn connection ends.
  • Binding or friction in the linkage can cause speed variation and other problems that appear to be caused by the governor. 
  • Free play in the linkage. Play will cause the governor to travel the distance of the free play before any fuel change is made.  The governor will become overactive and provide less than optimum control.  An overactive governor can wear in the linkage and in the governor.

Using a GAC solution? Please contact GAC for more information.


NEED HELP WITH YOUR GAC PRODUCT INFORMATION?

Do you need a refresh of your product information? Are you not sure where to start? Are you redesigning your website? Let us help!  Contact Pam at GAC and she will send you what you need or work to create what you want.

See GAC videos and playlists on You Tube for details!

PRODUCT OF THE MONTH

EEG6500 / EEG6550 Enhanced Electronic Governor

GAC’s EEG6500 and EEG6550 Series enhanced electronic governor speed controllers are designed to regulate engine speed on diesel and gasoline reciprocating engines. With flexibility, precision, and accurate control of governed speed, the EEG is designed for industrial engine applications from generator sets and mechanical drives, to pumps or compressors.

The EEG6550 Series Quikset Display allows its operator to monitor and configure parameters without needing configuration software or a PC.

  • Simple LCD User Interface, No Potentiometers or PC required
  • 5K Ω resistive, 0-5 V or 4-20 mA Variable Speed Input
  • Selectable Isochronous or Customizable Droop Governing
  • 2 Fixed Speeds (Rated/Idle) and Variable Speed
  • Speed Range to 12 kHz (4000 RPM) with Frequency Display
  • Fault Protection with Overcurrent Sensing
  • Adjustable Starting Fuel Strategy (Black Smoke Reduction)
  • Speed Ramping (Any Transient Speed Change)
  • AUX Input for Synchronizing and Load Sharing
  • J1939 Engine Speed Output
  • Selectable Light Force Governor – EFC Compatible
  • The EEG6550 offers these additional capabilities:
    • Configurable Speed Switch
    • Selectable AUX Input Polarity
    • Hour Meter and Service Reset Hour Meter

APPLICATION OF THE MONTH

The PN4000 Rail Yard Utility Vehicle is custom built with a 3.331L 4-cylinder Kubota V3307 engine, equipped with a GAC ALR190-KV07-12 actuator positioning the fuel control rack and an EEG6500 digital speed control. The vehicle uses a hydrostatic drive and four-wheel steering that enables it to maneuver within a five-foot turning circle.

PN4000 Rail Yard Utility Vehicle

This digital governor solution provides two fixed speeds, a 1000 RPM idle, and 2000 RPM “work speed setting” when drive mode is detected, or when the unit is switched to compressor mode.


IN THE NEWS

Bureau Veritas Marine Certifications

Governors America Corp. is pleased to announce the recent certification of its marine actuators and speed controllers by Bureau Veritas (BV).  BV certification ensures ship owners and operators that the material and equipment they buy conform to international safety and regulatory requirements.  This approval further confirms that GAC products comply with recognized industry quality standards and that they are in full compliance with the BV rules, which provides further confidence from our customers for our products. Take a look at this certification and our other Marine and AS9100 Certifications!

CURRENT GAC 2021-2025 MARINE CERTIFICATIONS (See also GAC Website)


TIP OF THE MONTH

Is your product GAC Authentic?

GAC takes pride in designing and manufacturing high quality products in the U.S.A.   

The downside to creating great products is that counterfeiters love to make their product look like ours, using our reputation to sell their knock-off product.  At first glance, many of these counterfeits look like a GAC product, but they certainly do not perform like one.

For more information see GAC’s guide to counterfeits or call or email us for help.  


WHO IS HAWKEYE INNOVATION?

Hawkeye Innovation, GAC’s strategic partner, offers direct access to military sourcing. Our government procurement specialists can help you fill that contract request.

For more information contact [email protected]
Tel: +1 (413) 233-1865


See GAC videos and playlists on You Tube for details!

APPLICATION OF THE MONTH

PROVIDING RELIABILITY FOR A PERKINS POWERED GEN-SET

When a 500+ bed hospital in London called for an upgrade to its standby generator, a Perkins 4016TAG V16 engine, the GAC ACB2001 actuator and ESD5330 electronic speed controller was selected for the governing system.  Powerful enough to control the engine under no-load and full-load conditions, the parallel tests demonstrated the system’s ability to reliably synchronize and parallel the gen-set to the grid.

The ESD5330 speed controller accurately controls engine speed and provides a fast precise response to transient load changes.  With a powerful actuator drive circuit, the ESD5330 is specifically designed to work with the ACB2001 actuator which delivers 12 Ft-Lbs. [16.3 N·m] of torque over 35° of shaft rotation.

1 week after fitting the GAC system, the local authority authorized a paralleling test of the genset to ensure the system ran reliably under no-load and full-load conditions. Test trials proved 100% successful, successfully providing 1.1 MW of electrical power to the grid on a twice weekly basis with no reported failures.

ESD5330 SPEED CONTROLLER
ACB2001 ACTUATOR

Product of the Month: EEG7000

EEG7000 Enhanced Electronic Digital Speed Controller

  • Mini-ECUTSC1 Control Capable with Diagnostic Messages (DM)
  • Isochronous, Variable, or Customizable Droop Governing
  • 3 Fixed Speeds or Variable Speed with Direct 0-5 V, 5 Ky, or 4-20 mA Input
  • Built-in USB Port for Easy Configuration with Free Software
  • Engine Hour Meter and Service Timer
  • Built-in Speed Switch Output for Crank or Overspeed
  • Black Smoke Reduction, Speed Ramp Control, Load Sharing / Synchronizing Option and Cummins EFC Capable.
  • Fully Sealed, IP67

The EEG7000 Enhanced Electronic Digital Speed Controller is designed to precisely control engine speed and provide a fast precise response to transient engine loads for diesel and gaseous fueled engines. When paired with a GAC actuator the EEG is a significant upgrade for any mechanical governor system that needs flexibility, precision or accurate speed control.

The EEG is designed for industrial engine applications from generator sets, mechanical drives, pumps compressors and off-road mobile equipment.

The EEG7000 is programmed using our free software, the GAConfig Tool , consolidating the most popular features into one user friendly package. It can be controlled directly over J1939 and is completely compatible with Comap, Dynagen, and Murphy, offering a solution for every application.

GAConfig TOOL

Tip of the Month : WHAT GAIN LOOKS LIKE

Sometimes fine tuning the system can be frustrating.  Some say they can hear when the engine is at that sweet spot. Others use technology to reach that spot.

So what does GAIN look like.

Gain provides a proportional response to the rate of RPM change. 

Higher gain offers faster proportional response, but also higher overshoot. Lower gain offers slower proportional response.

When tuning, always set Gain at no load and adjust if needed, as load is applied.

Steady instability should respond to GAIN control.

GAIN: THE PROPORTIONAL RESPONSE TO THE RATE OF RPM CHANGE

INVESTING IN QUALITY

At GAC we strive to improve our quality.  Our recently purchased coordinate measuring machine (CMM), the Aims Revolution® HB Shop Floor 8.10.6 with a PH20 probe head, brings top of the line CMM inspection in-house with extreme detail. “Our 0.5 mm tip with unlimited articulation allows for rapid, high accuracy measurements” says Amos Bliesener.  This is critical for quality assurance in all industries.

The CMM traces parts on three axes of the machine’s coordinate system where the probe measures points on the part, with each point being unique, providing precise, reliable, repeatable inspections under all shop floor conditions.  


GUEST STAR

Many of you would know the voice, but now meet the man.

Arni Atlason, Senior Applications Engineer at Governors America Corp. (GAC), took the Oath of Allegiance, becoming an American citizen in January.  Arni’s journey to America started with his journey to GAC in 2000 when he began using GAC solutions in his engine installations.  Arni, a chief engineer in the fishing industry, visited GAC for training and was impressed. “Iceland is very Americanized, but I was impressed and thought this would be an amazing place to work.”  While visiting GAC Arni met Bill Ferry, GAC’s founder and Brig. Gen. (Dr.) Sean T. Collins, now owner and president of GAC.  “I had never met a soldier.  There was something magical about it for me. I felt honored to meet him.”  

Many years later Arni decided it was time for a change. “The thought of working for GAC stuck with me all those years. When I sent out my intent to look for a new job Bill Ferry replied right away.  GAC was so welcoming. People here in the U.S. are so friendly and open.”  Eventually Arni’s wife joined him, and both applied to become citizens. His wife was summoned first for her test in November 2020. They drove 2 hours to Lawrence MA for the interview, and due to Covid, Arni waited in the car while his wife went in for her test, returning a new U.S. citizen.  It was another year before Arni was summoned. “Good things happen slowly” said Arni.  Arni felt privileged receiving his Oath of Allegiance with Federal Court Judge Mark G. Mastroianni in Springfield MA. “It was worth the wait, it felt so much more official.”


See GAC videos and playlists on You Tube for details!

WORKING TO MEET YOUR NEEDS

At GAC we are working hard to meet your needs.  Our customers are smart, innovative, and know we make the best in speed control systems.   

We understand your urgency and want you to know all efforts are being applied to your requirements.  Supplying power control solutions since 1986, we are here for you. 

ACTUATORS READY FOR PACKAGING

Application of the Month: MAN D2842 LE201 ENGINE

This Soilmec 7T800 pump uses a 21.93L diesel MAN D2842 LE 201 engine to power this 614 liter/min workhorse. 

The engine is equipped with a GAC ACE275HD actuator (MAN PN 51.11610.6028) with heavy duty bearings to provide the strength and durability this application needs.  The GAC ESD5330 works with our RSC671 controller to ensure precise control.

SOILMEC 7T800, with MAN D2842 LE 201 using a ESD5330 with RSC671 and ACE275HD-24 Mounted on a Diesel Pump
The ESD5330 speed control unit is designed to precisely control engine speed and provide fast precise response to transient engine loads.
The RSC671 Ramped Speed Control module provides full time, linear, electronic variable speed control.

ACE275HD provides optimum performance for in-line pumps.


Tip of the Month : How do I know if my speed sensor is working?

The output voltage of a magnetic pickup is affected by three factors.

Output voltage increases with increases in the surface speed of the flywheel teeth.

Voltage decreases as the air gap between the magnetic pickup and the flywheel teeth increases.  (The optimum air gap is typically 0.020” to 0.025” {0.5 to 0.65mm})

The voltage waveform is determined by the size and shape of the gear tooth in relation to the size and shape of the sensors pole piece.

If you suspect the magnetic pickup is not functioning properly measure its resistance by disconnecting the pickup leads and check the sensors with an ohmmeter: (refer to manufacturer’s specifications for acceptable values)

  1. Measure between the pickup case and leads with an ohmmeter for near-infinite resistance.
  2. Confirm there are no open circuits, including the wiring harness and all connectors.
  3. Inspect the sensor for mechanical damage and remove any debris that might have accumulated on the pole piece. 
  4. Reset the air gap to 0.020” to 0.025” (0.5 to 0.65mm) and confirm that the sensor outputs a minimum of 1.0 VAC during cranking across the inputs to the speed control.

See GAC videos and playlists on You Tube for details!

GAC Training

Did you know that GAC offers sales and application training?  Tailored to your needs, GAC application engineers can walk you through the latest application solutions as well as provide refreshers on tried-and-true offerings that outlast the engine application.  Choose from a selection of information or ask for your own needs. GAC is here to help.

Product of the Month: EEG6500 / EEG6550 Enhanced Electronic Governor

  • Simplified LCD User Interface
  • Selectable Isochronous or Customizable Droop Governing
  • 2 Fixed Speeds (Rated/Idle) and Variable Speed
  • Adjustable Starting Fuel Strategy (Black Smoke Reduction)
  • Speed Ramping (Any Transient Speed Change)
  • AUX Input for Synchronizing and Load Sharing
  • Selectable AUX Input Polarity
  • Configurable Speed Switch
  • 5K Ω resistive, 0-5 V DC or 4-20 mA Variable Speed Input
  • Selectable Light Force Governor – EFC Compatible
  • Hour Meter
  • Service Reset Hour Meter
  • J1939 Engine Speed Output Variable Speed/Load Input with Service Info and Fault Condition

Application of the Month

PSP Engines, of Humble Texas, converted a number of Caterpillar 2.2 engines to electronic governing.  They selected the GAC EEG6550 Digital Governor, ALR190-P04-12 actuator and an MSP6741 magnetic speed sensor for the systems for optimum performance and ease of installation.  The ALR190 series actuator mounts directly onto the fuel injection pump in place of the electric shut-off solenoid, and directly engages the fuel control rack.  No external linkages or mounting bracketry required.

The EEG6550 digital governor was selected for having the most applicable combination of features.  These engines will be installed as water pump drives and the speed ramping control significantly reduces visible exhaust smoke as the engine accelerates under load.  The Light Force governor feature scales the PID governor’s range of adjustment for these small, low current actuators providing the best resolution for ease of tuning the governor response parameters.

The conversion included two MSP6741 speed sensors shown threaded into the bell housing.


Tip of the Month : Controlling Black Exhaust Smoke at Engine Start-up

One of the most obvious issues with standby gen-sets is the large plume of black exhaust smoke emitted during engine startup and acceleration.  Many standard electronic governors over-fuel the engine to guarantee starting; the bigger the engine the worse the problem.  If you have multiple engines on site that all start at the same time in response to a mains failure, the amount of black smoke emitted can be very severe. 

GAC offers a reliable, proven solution, that eliminates black smoke emissions from gen-sets equipped with mechanical fuel injection systems.  A variety of digital and analog governor controllers include adjustable START FUEL and SPEED RAMPING features that enable the optimum compromise between start time, acceleration and visual exhaust smoke.

The START FUEL feature sets the initial actuator position (delivered fuel quantity) at the start of cranking and is adjustable from 0 to 100 %.  The SPEED RAMPING adjustment sets the rate of acceleration and deceleration between idle and rated speed.  These parameters can be applied to both constant and variable speed applications.

GAC Speed Controllers with Adjustable START FUEL and SPEED RAMPING Features

DigitalAnalog
EDG6000ESD5330 / 5340
EEG6500ESD5500-II
EEG6550ESD5500E, ESD5520E,
EEG7000ESD5522E, ESD5522E, ESD5528E
EEG7500ESD5550, 5550M
IGA225SESD5570

See GAC videos and playlists on You Tube for details!

Product of the Month: ADB335 Series Actuator

The universal electric actuator is a rotary output, proportional servo.  Easy to install, built with precision bearings and no maintenance required, this electromechanical actuator is typically used for mechanical actuation of fuel system control levers for diesel and gaseous fueled engines.   An internal spring provides fail safe operation by forcing the actuator to the fuel shut off position when the actuator is de-energized. The design combines rapid transient response with a wide rotational angle for extended linear travel and proven reliability in the field.

  • 24 V DC
  • 3.3 lbf.ft (4.5 N m) Net Torque
  • 65° Shaft Rotation
  • Die-Cast Housing
  • Military Style Connector
  • Available Options:
    • Position Feedback Sensor
    • Mating Connectors, Straight and 90°
    • 12′ (3658 mm) Cable Harness Assemblies with Straight or 90° Connectors
    • Mounting – Vibration Dampeners

Application of the Month

BioWorks Energy LLC of Grand Blanc, MI built a custom biogas fueled co-generation unit using a 21.9L, V12 MAN E2842 engine.  Cogeneration (cogen) through combined heat and power is the simultaneous production of electricity with the recovery and utilization of heat. 

Cogeneration is a highly efficient form of energy conversion and achieves a primary energy savings of approximately 40% compared to the separate purchase of electricity from a utility company’s electrical grid and a separate gas boiler for onsite heating.

ATB552T2F14-24 INTEGRATED ACTUATOR/THROTTLE BODY

Gaseous fueled cogen units are typically used for commercial, residential, and industrial applications and can easily be configured with a GAC ATB (integrated actuator/throttle body assembly) controlled by a variety of digital or analog governors with an ‘Anti-Wind-Up’ PID feature that minimizes RPM over-shoot and/or under-shoot.  The ‘Anti-Wind-Up’ PID is specifically designed for gaseous fueled engines

ADB335
EEG7500
ESD5330

BioWorks Energy LLC has specially configured their MAN engine combining GAC’s EEG7500 Enhanced Electronic Governor, operating in the positioning control mode, with an ATB552T2F14-24 integrated actuator/throttle body equipped with a position feedback sensor for the gaseous fuel control valve system.  The EEG7500 receives a 4-20 mA input signal from the PLC, controlling the ATB’s position to properly regulate the gas flow rate for all operating conditions.  Engine speed is regulated with the ESD5330 controller that features a unique power drive circuit specifically for large, higher current actuators.


Tip of the Month : How do I know if my speed sensor is working?

If you suspect the magnetic pickup is not functioning properly, measure its resistance by disconnecting the pickup leads and check the sensors with an ohmmeter. See the manufacturer’s specifications for acceptable values.

The output voltage of a magnetic pickup is affected by three factors.

  • Output voltage increases with increases in the surface speed of the flywheel teeth.
  • Voltage decreases as the air gap between the magnetic pickup and the flywheel teeth increases.  (The optimum air gap is typically 0.020” to 0.025” {0.5 to 0.65mm})
  • The voltage waveform is determined by the size and shape of the gear tooth in relation to the size and shape of the sensors pole piece.
Approximate MSP Resistance
Long Standard Model250 Ὡ max
Short Standard Model220 Ὡ max
Standard Metric Models250 Ὡ max
  1. Measure between the pickup case and leads with an ohmmeter for near infinite resistance.
  2. Confirm there are no open circuits, including the wiring harness and all connectors.
  3. Inspect the sensor for mechanical damage and remove any debris that might have accumulated on the pole piece. 
  4. Reset the air gap to 0.020” to 0.025” (0.5 to 0.65mm) and confirm that the sensor outputs a minimum of 1.0 VAC at cranking across the inputs to the speed control.

See GAC videos and playlists on You Tube for details!

Product of the Month: AFR 200 Series Controllers

The Air Fuel Ratio (AFR) 200 series controllers provide a comprehensive fuel management system for gaseous-fueled, spark-ignited engines which incorporates a wide range of gaseous fueled engines ranging from 1 L to 13 L+.  The AFR’s fuel control algorithm maintains a stoichiometric or lean-burn air-fuel ratio for optimized engine performance. Engine speed can be governed in either isochronous or droop modes using GAC’s proprietary Electronic Digital Governor (EDG) algorithm. The AFR offers:

  • Optimal closed loop air-fuel ratio and delivery control
  • Actuator throttle body control
  • Integrated EDGe governing
    • 3 fixed speed +Droop
    • 1 Variable Speed +Droop
    • Multi-PID across Speed / Load Range
    • Load Sharing & Synchronizing (AUX) Input
    • Dither and MAX Fuel Alert
  • Air Fuel System Tuning Tables
    • Fuel P/I
    • O2 Setpoints Stepper
    • Multi-PID across speed / load range
  • Engine sensor and data monitoring with LED display and blink code for use when a computer is not available.
  • CAN / serial communication
  • Connector, harness and cast aluminum case are environmentally sealed to IP-67.
  • Ruggedly designed, highly reliable and includes protection against reverse battery voltage, transient voltages, short circuits and loss of engine speed sensor signal or battery supply.
  • Easy configuration and customization using GAC’s SmartVU software including diagnostic and troubleshooting functionality, available free for download on the GAC website.

The AFR system is capable of supporting the strict emission regulations of the USA and Europe as well as the rest of the world.

Depending on the AFR version selected, the following sensor inputs are supported for added control and engine protection:

  • Second (post-catalytic) oxygen sensor
  • Engine Oil Pressure (EOP) sensor
  • Engine Coolant Temperature (ECT) sensor
  • Exhaust Gas Temperature (EGT) sensor; Type K thermocouple


Application of the Month

The GAC Air Fuel Ratio (AFR) – ATB solution provides closed loop, air-fuel ratio control with an integrated venturi mixer / control valve for low pressure gaseous fueled engines, providing the control you need for any engine based generator power solution. 

GACs comprehensive fuel management system for gaseous-fueled, spark-ignited engines ranging from 1 L to 13 L+ is a total system approach, providing a cost effective solution with the greatest potential for improvement in engine efficiency and exhaust emissions.  The air-fuel mixture is constantly adjusted between lean/rich, to operate at peak efficiency and minimize emissions using the AFRs feedback / predictive algorithm and customizable PIDs settings.

The AFR controller works alongside the GAC actuator throttle body (ATB). ATBs feature a spring return butterfly valve for safety and its maintenance free design, precision bearings, and idle air adjustment screws make it the perfect solution for use in the harshest environments, ensuring a long life.

GAC ATBs are available in a host of bore sizes to fit most engines, from 25 mm to 95 mm.

The ATB Series integral throttle body electric actuators are designed to control the air or air/fuel mixture to a gas or gaseous-fueled engine working in tandem with a conventional fuel mixer.

  • Cost-effective, maintenance-free, compact design
  • Rapid response to transient load condition
  • Sealed to 5.0 bar
  • Mounts in any position; no mechanical linkage, no mounting brackets
  • Flexible design for engine, manifold, and fuel mixer considerations
  • Idle and max adjustment screws
  • Optional high temperature and corrosive environmental conditions

Using GAC SmartVU software the system allows for customizable, easy-to-use, quick turnaround for modifications and changes.

GAC Magnetic Speed Sensors (MAG Pickup) are used to calculate crankshaft revolutions per minute (RPM) via the input flywheel teeth value within the AFR.   

A Zero Pressure Gas Regulator is attached to the fuel inlet port on the mixer / fuel control valve assembly to regulate the pressure / flow to the assembly. While an electronic gas lockout valve increases safety and performance.  Additional tools can be used to filter exhaust, detect O2 levels, monitor oil pressure and coolant temperatures to ensure safe and constant operation.

The overall low pressure design is perfect for applications using Shale gas, Digester gas, Biogas, Landfill gas, Wellhead gas, Coalbed/seam gas.

Aged to Perfection

One of GACs most common testimonials is “ I can set it up and it runs forever!” Well recently a 25 year old unit stopped running. 

After one of GAC support engineers diagnosed the problem, a loose connector rod, the controller is back to work at its Hickory Hill Greenhouse location is this ADC225 running a gen-set using a propane fueled Ford 2.3L Katolight Gen Set.

Here’s to another 25 years providing excellent speed control and load response!

Item of the Month : AFR Lean Burn Adapter

This simple to install plug an play adapter uses Bosch LSU4.2 sensor technology replaces your narrow band sensor to optimize for emmisions.

The GAC KT317WB-AFR ready-to-use Lean Burn Adapter kit for use with AFR200 Series Controllers determines how rich or lean an engine is running at any load and compensates for changes in temperature and sensor condition.

Performance and operational settings are adjusted and viewed in real time using GAC’s SmartVu software. Set the Adjustment table in SmartVu to the required Lambda at speed vs load condition and you are done.


THROTTLE BODY SOLUTIONS

GAC throttle body series operate in a variety of gaseous media. Whether you are replacing an existing throttle body, or need a complete air / fuel ratio control system, GAC has your solution.

The ATB Series provides fast response and proven reliability to allow for efficient and precise control. The ATB Series actuator directly drives the throttle plate with internal return springs, ensuring that the throttle plate returns to the minimum fuel position when the actuator becomes de-energized.

ATB
Designed to control the air or air/fuel mixture to a gaseous-fueled engine

BORE DIAMETER
25, 30, 35, 40, 45, 55, 65, 75, 85, 95 mm

SPECIFICATIONS

  • Sealed to 5 bar
  • High temperatures
  • Mounts in any position
  • No mechanical linkage
  • Rapid response to transient load
  • Pair with the GAC AFR or other GAC Controller

SES Arrow Manufacturing, build natural gas engines equipped with a GAC ATB that supports a variety of applications.  As versatile as the ATB mounted on it.


GAC offers a complete electronic governing system for the natural gas or propane fueled Ford 300 (4.9L) in line engine using a GAC throttle body with an Impco 125 carburetor- mixer.

Aegis Energy Services provides turnkey modular combined heat and power systems. Cogeneration module includes a natural gas-fueled engine with a GAC ATB and GAC speed controller, induction generator, a microprocessor control panel, protective switchgear, and heat recovery equipment.

PSS Governor Services fully equipped governor repair facility replaces mechanical governors with the GAC throttle body and GAC speed controller to eliminate external linkages and improve performance.  This common fix is a great way to extend the life of an older generator.

The Governor Shop of Edmonton, Alberta Canada upgraded a 14.64L, 6 cylinder Caterpillar G3406 engine to a GAC control system, noting its ease of installation and superior performance. 


About the ATB

The ATB Series is designed to provide an exact fit to the various manifolds and mixers available.

The actuator is mounted rigidly between the engine’s intake manifold and the gas mixer. The preferred mounting orientation for the ATB Series is with the throttle shaft parallel to the engine crank shaft. Normal vibration from the engine will not affect the operation of the actuator.


The GAC AFR provides an optimal closed loop air-fuel ratio control system with a built-in engine speed governor capable of engine sensing, data monitoring and diagnostic capability. It supports CAN/Serial communication and is easy to configure using GAC SmartVU software.


ATB Tech Tip

The ATB should be tuned to MIN and MAX throttle speeds by adjusting the throttle screws to raise or lower the engine speed to support load.

  1. Determine the engine throttle speed MIN and MAX and using a Hz meter, measure your output.
  2. At the ATB, noting the arrow on the side of the ATB, locate the MIN and MAX set screws.
  3. Using a small Phillips head screwdriver, remove the sealing screw. This gives you access to the inner Idle set screw.
  4. Using a 2.5 mm Hex wrench, at the Idle set screw, turn the wrench clockwise to increase the fixed throttle opening.
  5. After adjusting the Idle set screw, insert the sealing screw and tighten to snug plus ¼ turn.

RELIABLE THROTTLE SPEED CONTROL ON A MISSION

By combining two GAC ACB2001 actuators with an AXIOMATIC AX100310 Unidirectional Digital Control one of Coastguard Bluff’s rescue vessel’s finally has a reliable solution to a throttle speed control issue.

THE SOLUTION: GAC ACB2001 ACTUATOR

The Coastguard Bluff, charged with protecting the Foveaux Strait area of southern New Zealand hired Echo Mechanical Electrical Engineering (EEME) NZ Ltd to determine if it was possible to improve the reliability of their system.

Working as a team EEME, Governors America Corporation (GAC), Axiomatic Technologies, and the Bluff Coast Guard team as well as Gough Bros Ltd and Hamilton Jet NZ, determined the 500 HP Yanmar Engines Fuel Injection Pump Throttle Control Levers were not getting the high torque needed to move from idle to full throttle. They also realized the system must be proportional to the Bridge Speed Control Levers. With no space for additional equipment, the engine must remain original.

The solutions mounts a GAC ACB2001 actuator, capable of 35 degrees of rotation and up to 12 ft-lb [16.3 N∙m] torque, on a special bracket on each 500 HP Yanmar 6CXBM diesel engine, paired with the Axiomatic controller to replace the original equipment.  This provides the coastguard rescue vessel with the reliable throttle speed control it needs to seamlessly control the vessel with the Blue Arrow jet controls without loss of control.

Governors America Corp will be closed September 6th in observance of Labor Day

ACB2001 HEAVY DUTY ACTUATOR

GAC’s ACB2001 actuator is a rotary output, 24 V, linear torque proportional electric servo designed for mechanical actuation of fuel system control levers requiring torques as high as 12 lb-ft [16.3 N∙m].

Paired with GAC’s ESD5300 Series speed control units, the actuator is capable of 35 degrees of rotation.

Internal springs provide fail safe operation by forcing the actuator to the fuel shut off position when the actuator is de-energized. Since the design has no sliding parts, and is totally sealed, its reliability is outstanding and no maintenance necessary. Engine applications include large block pumps, dual medium carburetors, and some large size carburetors.

  • Rapid Response to Transient Conditions
  • Multiple Mounting Positions
  • High Performance Anti-Corrosive Grease (Lubriplate SYNEME HD-2 ™)
  • Universal Design
  • Internal Return Spring
  • 35 Rotation
  • Heavy Duty Bearings (ABC2001-HP)

GAC AS9100D Certified

Governor’s America Corp. (GAC)  is proud to announce it has received AS9100D certification, becoming a fully qualified supplier for the aerospace industry. The company driven initiative to obtain the certification was no easy accomplishment in regular times, but was complicated by the pandemic.

The Quality & Continuous Improvement Manager led the charge. Having gone through the rigorous process of obtaining certification allows us to further focus on our customers needs for high quality products. Obtaining the AS 9100 certification means that GAC is able to manufacture its own parts, allowing us to improve price and delivery speed.  GAC has been manufacturing engine solutions for 35 years, the AS9100 will allow us to grow further.

See Our Certificate

ALN025 and ALN050 universal linear actuators provide fast acting, highly accurate positioning of a shut-off lever or throttle lever.  These push type actuators feature internal return springs and perform both speed control and engine shut-down functions.  The field proven, military grade and military approved design is constructed with linear bearings and a minimum number of moving parts.  ALN025 and ALN050 actuators are maintenance free and can be applied to a multitude of applications including a direct replacement for Woodward / Barber Colman units used on many OEM installations.

The ALN025-12/24 provides 6.5 Lbs. of linear force and replaces Woodward’s DYNA 2000 part numbers:

  • DYNC-10202-000-0-12VDC
  • DYNC-10202-000-0-24VDC

The ALN050-12/24 provides 13.0 Lbs. of linear force and replaces Woodward’s DYNA 2500 part numbers:

  • DYNC-10502-000-0-12VDC
  • DYNC-10502-000-0-24VDC

Fiat Powertrain Technologies (FPT) has selected the ALN025 actuator and ECC328 speed controller for their 2.9L, 3 cylinder S8000 series engines for emergency and prime power gen-set applications used in both 50 and 60 Hz markets. 

The ALN025 actuator is mounted over the pump drive gear housing and is linked to the throttle lever of a Bosch VE pump.  The ECC328 electronic governor controls engine speed with precise response to transient engine load changes with closed loop speed control using the 40 to 80 Hz input from the generators AC frequency for isochronous governing.   A mag pick-up and related wiring is not required, making this high performance system the most popular alternative for small cost sensitive applications.

ALN mounting brackets are Zinc plated (per ASTM-B633 Type II) for corrosion resistance and ready to accept the actuator, simplifying installation.   

Light Force Speed Controllers as shown in the Application of the Month include: ECC328, ESD2244, ESD2402, ESD5120, ESD5520, ESD5570, ESD5526, ESD5500-II, and EEG6550

Additional ALN System Components:ALN Series Clevis Kit: KT130Bearing Rod Ends: BR200 (1/4-28), BR300 (M5),BR400 (M6), BR500 (M8), and Threaded Rods: RD102 (1/4-28), RD233 (M6)
WHAT IS LIGHT FORCE

Light Force governing provides finer adjustment resolution for smaller actuators. It is designed to work with low current small actuators, like T1 ATB, ALR/ALN, 100/103/104 series and normally closed Cummins EFC actuators.  Select Light Force on your GAC speed controller when using small actuators to improve adjustments as they respond very quickly to input changes over a smaller range of operating current, using a fraction of the PID and current output of a normal actuator. 

EEG7000 Enhanced Electronic Digital Speed Controller

  • Mini-ECUTSC1 Control Capable with Diagnostic Messages (DM)
  • Isochronous, Variable, or Customizable Droop Governing
  • 3 Fixed Speeds or Variable Speed with Direct 0-5 V, 5 kΩ, or 4-20 mA Input
  • Built-in USB Port for Easy Configuration with Free Software
  • Engine Hour Meter and Service Timer
  • Built-in Speed Switch Output for Crank or Overspeed
  • Black Smoke Reduction, Speed Ramp Control, Load Sharing / Synchronizing Option and Cummins EFC Capable.
  • Fully Sealed, IP67

The EEG7000 Enhanced Electronic Digital Speed Controller is designed to precisely control engine speed and provide a fast precise response to transient engine loads for diesel and gaseous fueled engines. When paired with a GAC actuator the EEG is a significant upgrade for any mechanical governor system that needs flexibility, precision or accurate speed control.

The EEG is designed for industrial engine applications from generator sets, mechanical drives, pumps compressors and off-road mobile equipment.

The EEG7000 is programmed using the GAConfig Tool, consolidating the most popular features into one user friendly, compact package. It can be controlled directly over J1939 with aftermarket displays such as ComAp, Dynagen, and Murphy, etc.; a solution for every application.

The USB port on the front of the unit allows for easy configuration with our one of our free software packages.  The Interface Tool provides a single dashboard interface or our more robust GAConfig Tool, each making it easy to optimize setting parameters for your application.

Happy Independence Day – Fourth of July background. Fourth of July design. USA Independence Day banner. Vector illustration.

Ease of use , reliability, and system compatibility are hallmarks of GAC equipment.  

Engine equipment monitoring and power control solutions are often created over time, with various manufacturer components added as needs arise.  Sometimes finding a way to make all the components talk is difficult.  With that understanding many of GACs controllers and supporting modules have selectable polarity built in to the design. For the EEG7500 and the EEG7000 the software does the heavy lifting, for many others like the LSM201, a simple jumper lets you reverse the polarity of the load sharing input signal. 

GAC Application Engineers receive requests for solutions and troubleshooting from all over the world.  This week a deep water operations vessel had a question about a new piece of GAC equipment, the LSM201N load sharing module, recently added to a pair of auxiliary generators using QSM11Cummins engines with the ISM Engine Control Module (ECM).  Balancing power distribution between engines is the primary function of the LSM.  It can also provide power control through ramping and monitoring, accurately measuring true engine power.

When one of the two QSM11-DM engines reversed power it was easy to determine the cause.  Out of the box the LSM201N interpreted the ECM increased voltage to be a request to decrease power.  But the ECM translated increased voltage as a need to increase power.  The LSM was built to allow a hardware solution of adding a jumper to change polarity, but like both GACs EEG7000 and the EEG7500 controllers, the ECM was also able to use software to match the LSMs polarity.  The issue was easily resolved and the boat was soon back in service.

MEC 12 – 75 Speed Load Controller

  • PMG output voltage is stable across load range
  • Full kW rating of PMG is available for use
  • Engine KW rating can be optimize
  • Higher efficiency obtained
  • Reduces risk of high no load voltage

UNLEASHING THE POWER OF YOUR ENGINE

When a customer asked to use a specific engine for its light tower, but wanted constant voltage output, Mecc Alte teamed up with Governors America Corp to ensure big results from a small footprint.

Using a Perkins 400 Series 3 cylinder 403F-15 engine, combined with a Mecc Alte PMG5 permanent magnet generator (PMG) controlled by the MEC 12-75 VDC, powered by GAC, provided significant benefits as an alternative to traditional alternator systems. PMG alternators are highly reliable and use only the amount of energy needed for a specific task to provide stable output voltage.  Permanent magnets on the stator frame provide the magnetic fields that interact with the rotor field to produce torque, eliminating the need to power the stator, reducing electrical energy consumption.  The downside is when using a magnetic field to generate voltage, output voltage decreases as load increases.

This is where the MEC 12-75 VDC, powered by GAC comes in.  When the MEC 12-75 VDC Speed Load Controller is added to a PMG system the controller adjusts engine RPM to maintain constant output voltage through load rage adjustments. 

The MEC 12-75 VDC, when connected to a proportional actuator and supplied with voltage signal from a DC generator, adjusts engine speed to maintain constant voltage. This variable speed operation results in decreased noise, significantly reduces fuel consumption and increases engine life.

INSTALLING A MAGNETIC SPEED SENSOR

  • Drill and tap hole in flywheel housing using specified pilot drill. The threaded hole should centered over the flywheel ring teeth.
  • Insert the magnetic speed pickup into the threaded hole until it makes contact with the gear.     
  • Back out the magnetic pickup 3/4 turn.  The gap between the pickup and the gear should be between 0.020″-0.035″ (0.50 mm – 0.89 mm).  Digital speed controllers may require less gap (1/4 turn) to provide an optimal signal.     
  • Wire leads should be twisted for the entire length from the pickup to the speed control unit. Use shielding if external interference exists or leads exceed 10 ft. in length.

NEW!  SLC103

The SLC103 Speed Load Control uses DC generator voltage as its input signal to quickly and accurately respond to load changes providing constant generator output voltage under all conditions.

The SLC103:

  • Maintains engine speed whether engine load is increased or decreased, minimizing rapid speed fluctuations (hunting)
  • Provides a voltage range of adjustment from 12 to 75 V DC
  • Is compatible with GACs ALNALR120 Series and other linear actuators
  • Provides a simple, easy to adjust design, with built in potentiometers

The SLC103 supports a wide variety of small engines such as Kubota, Yanmar, and Mitsubishi. These engines are often used in DC generators, providing highly reliable power to charge batteries, provide drip charge, or temporarily provide power until main power comes back online.

The SLC103 when paired with one of GACs proportional actuators and supplied with a voltage signal from a DC generator and maintains the engines speed to maintain constant output voltage.

  • 12 to 75 V DC Input
  • Voltage Regulation: 0.1 V DC
  • Duty cycle 0 – 100 % PWM Output; Frequency 50 – 450 Hz
  • 12 and 24 V DC Battery Supply
  • CE/RoHs Compliant
  • Capable of Driving Actuators up to 6.0 Amps
  • Reverse voltage protection is built in to the design

See All of Our Speed Controllers

APPLICATION OF THE MONTH

The ADD103 Series Integral Actuator is designed to mount directly onto Delphi DPG/DP210G fuel injection pumps.  Installing the 103 Series actuator does not defeat the engine’s mechanical governor operation. During the installation process, the mechanical governor is set to a higher speed than the electric governor’s operating speed. In this configuration the mechanical governor acts as a speed limiter.  

The 103 Series is field proven and provides a proportional actuator movement based on the actuator coil current.  When de-energized the actuator provides the function of shutoff solenoid by internally moving the fuel metering valve to the no fuel position.

ADD103B ACTUATOR SAMPLE INSTALLATIONS

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TIP OF THE MONTH

Use an ESD5330
controller with RSC for variable speed operation!

Wide range variable speed control is easily configured by pairing an RSC671 Speed Ramping / Variable Speed module with a ESD5330 controller.

The RSC671 is a full time, linear electronic module designed to smoothly accelerate and decelerate an engine at independently adjustable rates.

The module accepts either 0-5V, 0-10V or 4-20mA variable speed input signals and is easily adjusted for diesel and / or gaseous fueled engines. This system provides optimum variable speed performance and is typically used with larger high output actuators like the ACB2001 andADB335-24.

The RSC671 variable speed control is also compatible with all ESD5100, ESD5200 and ESD5500 series speed controllers for use on any light force, standard or high force applications.

  • Simple to Install, Mounts in Place of Existing Shutdown Solenoid, No Brackets, No Linkages
  • Spring Return to Shutdown
  • Maintenance Free Sealed Actuator
  • Field-Proven on a Broad Range of Customer Applications
  • High-Performance Linear Bearings
  • High-Temperature Design
  • Extremely Fast Response
    • Precision Governing
    • Resolution for paralleling / load sharing application

Application of the Month:

The PN4000 Rail Yard Utility Vehicle is custom built with a 3.331L 4-cylinder Kubota V3307 engine, equipped with a GAC ALR190-KV07-12 actuator positioning the fuel control rack and an EEG6500 digital governor. The vehicle uses a hydrostatic drive and four-wheel steering that enables it to maneuver within a five-foot turning circle.  The digital governor provides two fixed speeds, a 1000 RPM idle, and 2000 RPM “work speed setting” when drive mode is detected, or when the unit is switched to compressor mode.

ALR Applications Chart – All Models

Recommended Speed Controller Models

Tip of the Month:

What are the LEAD CIRCUIT and SOFT COUPLING options, offered in the ESD5131 and ESD5500E series governors, and what do they do?

The LEAD CIRCUIT enables the governor to be more responsive and typically increases the range of the GAIN adjustment to increase overall performance of slower engines. This feature is controlled with switch C1 and is normally “ON” which eliminates slow or moderate hunting at higher GAIN settings.  Move the switch to the “OFF” position if there is a fast instability in the system.

The SOFT COUPLING, switch C2, controls a circuit designed to eliminate fast erratic governor behavior caused by a very soft or worn couplings in the drivetrain between the engine and generator. It works by averaging out any instantaneous RPM variations to create a stable speed reference for the PID governor routine.  The soft coupling switch C2 is normally “OFF”.  Move it to the “ON” position if fast erratic engine behavior, due to a soft coupling is experienced.

Find Out More

We miss you!

Hopefully, trade shows will return and we will be able to see you all again soon! Until then please do not hesitate to reach out!

Contact Us

ACB2001 For Large Diesel and Natural Gas Applications

The ACB2001 actuator is a rotary output, 24V, linear torque proportional electric servo designed for mechanical actuation of fuel system control levers requiring torques in the 5 lb·ft range. The actuator is capable of 35 degrees of rotation with torques as high as 12 lb·ft. Internal springs provide fail-safe operation by forcing the actuator to the fuel shut off position when the actuator is de-energized. Both CW and CCW output shafts are available. Engine applications include large block pumps, and dual-medium and large size carburetors.

  • Rapid response
  • CW/CCW rotation
  • Internal return springs
  • Maintenance-free
  • Universal design
  • Easy installation

Application of the Month: The 2001 Series 

The ACB2001 is compatible with ESD5330 and ESD5340 speed controllers that have a unique power drive circuit for optimum performance.  The ESD5330 / 5340 controllers are rugged enough too mounted in a control cabinet or in an engine mounted enclosure.  Their circuit boards are conformally coated to seal out moisture and resist vibration.

The ESD5330 / 5340

ACB2001 Actuator Mounted on Natural Gas Applications


FAQ:

Controlling Black Exhaust Smoke at Engine Start-up

One of the most obvious issues with standby gen-sets is the large plume of black exhaust smoke emitted during engine start and acceleration.  Many standard electronic governors over-fuel the engine to guarantee starting, the bigger the engine the worst the problem becomes.  If you have multiple engines on site that all start at the same time in response to a mains failure, the amount of black smoke emitted can be very severe. 

GAC offers a reliable, proven solution that eliminates black smoke emissions from gen-sets equipped with mechanical fuel injection systems.  A variety of digital and analog governor controllers include adjustable “START FUEL” and “SPEED RAMPING” features that enable the optimum compromise between start time, acceleration and visual exhaust smoke.The START FUEL feature sets the initial actuator position (delivered fuel quantity) at the start of cranking and is adjustable from 0 to 100%.  The SPEED RAMPING adjustment sets the rate of acceleration and deceleration between idle and rated speed.  These parameters can be applied to both constant and variable speed applications.

The STARTING FUEL and SPEED RAMPING adjustments control the start characteristics of the engine.  Proper adjustments provide a smooth start with minimum excess fuel to significantly reduce exhaust smoke.

Starting Fuel Adjustment:
Turning the STARTING FUEL adjustment clockwise will increase the amount of fuel delivered to the engine during cranking.  With the adjustment fully counter-clockwise, the amount of fuel delivered will be very low or zero depending upon the actuator and linkage arrangement.  With the adjustment fully clockwise, the actuator will move to the 100% fuel position during cranking. 

Speed Ramping Adjustment:

Turning the SPEEP RAMPING adjustment clockwise will slow the acceleration of the engine, it could take as long as 20 seconds depending on the speed range selected.  With the adjustment fully counter-clockwise, the ramping will effectively be eliminated and acceleration will be immediate.

Idle speed must be set for proper STARTING FUEL and SPEED RAMPING function even if the idle feature is not used.

For the initial start, insure that the STARTING FUEL potentiometer is turned full clockwise (maximum fuel) and the SPEED RAMPING is turned full counter-clockwise (fastest acceleration).

For final adjustment from idle speed, turn the START FUEL counter-clockwise until the engine speed begins to drop.  Increase STARTING FUEL slightly so idle speed is returned to the desired level.

Adjust SPEED RAMPING for the least amount of exhaust smoke during acceleration to rated speed.

New Registrar for ISO9001:2015

Governors America Corporation has transitioned registrars for ISO9001:2015 and our in-process AS9100:D certification. We are now certified with TÜV SÜD America Inc. TÜV SÜD America Inc. is an internationally recognized testing, inspection, and certification organization who sets the bar for quality in the certification industry.
 
You can verify our certificate by searching for Governor’s America at 
https://www.tuvsud.com/en-us/resource/certificate-finder/management-systems-certified-client-list
GAC is closed Monday, February 15th for President’s Day! GAC will reopen Tuesday, January 16th. 
Thank you!

HAPPY NEW YEAR!


We here at Governors America Corp. would like to take a moment to thank the essential healthcare workers on the front lines of the Covid-19 pandemic.

Thank you, healthcare heros


The ESD5330

The ESD5300 speed control unit is rugged enough to be placed in a control cabinet or engine mounted enclosure with other dedicated control equipment. The circuit board is conformally coated to seal out moisture and resist vibration. If water, mist, or condensation can come in contact with the controller, it should be mounted vertically. This will allow any accumulated fluids to drain away from the speed control unit.

24 V DC • Standard Unit

  • Two-element speed switch
  • Speed ramping idle to operating speed
  • Starting fuel control for lower engine exhaust emissions
  • Unique actuator power drive circuit
  • Accessory inputs for load sharing
  • Fixed, Droop, and Variable speed governing capable
  • Protection against reverse battery voltage
  • Protection against transient voltage
  • The ESD5340 is available with a full fuel at start feature for rapid startup in marine applications
  • The ESD5330/5340 is specified for the ACB2001 and the ADB335 / ADB335F, but is compatible with all GAC actuators

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APPLICATION OF THE MONTH:

Resolving a speed / frequency instability issue on a Perkins 4016, 61L, V16 engine powered gen-set. Perkins 4016TAG, 61L, V16 Engine

A 500+ bed hospital in London, UK called in GAC Distributor, IPU Engine Controls Group, now a part of ComAp Control Limited (UK), to fix an unacceptable instability problem with their emergency standby generator.  IPU supplied a GAC ACB2001 actuator and ESD5330 electronic governing system powerful enough to control the engine under no-load and full-load conditions.  Paralleling tests demonstrated the system’s ability to reliably synchronize and parallel the gen-set to the grid.

The ESD5330 governor precisely controls engine speed and provides a fast, precise response to transient load changes with every advanced feature GAC offers.  It features a powerful actuator drive circuit specifically designed for the ACB2001 actuator that delivers 12 Lb-Ft [16.3 Nm] of torque over 35° of shaft rotation.

The upgraded gen-set was returned to service on August 24th 2015.  Follow-up checks to date have verified that it’s been operating correctly in STOR mode, successfully exporting 1.1 MW of electrical power to the grid twice a week without issue. 
Closed January 1st for New Years Day! GAC will reopen on Monday, January 4th, 2021 

Governor America Corp.’s new website is arriving in December!  Governors-america.com has been completely redesigned to provide our visitors with an easier way to learn about who we are, as well as, what services and solutions we offer; while providing better access to installation manuals to those who are working in the field!


ALN025 / ALN050 Linear Actuators

ALN025 and ALN050 universal linear actuators provide fast-acting, highly accurate positioning of a shut-off lever or throttle lever.  These push-type actuators feature internal return springs and perform both speed control and engine shut-down functions.  The field-proven, military-grade, and approved designs are constructed with linear bearings and a minimum number of moving parts.  ALN025 and ALN050 actuators are maintenance-free and can be applied to a multitude of applications, they directly replace Woodward / Barber Colman units used on many OEM installations.

The ALN025-12/24 provides 6.5 Lbs. of linear force and replaces Woodward’s DYNA 2000 part numbers:

  • DYNC-10202-000-0-12VDC
  • DYNC-10202-000-0-24VDC

The ALN050-12/24 provides 13.0 Lbs. of linear force and replaces Woodward’s DYNA 2500 part numbers:

  • DYNC-10502-000-0-12VDC
  • DYNC-10502-000-0-24VDC

Shop Here


Application of the Month:

Fiat Powertrain Technologies (FPT) has selected the ALN025 actuator and ECC328 speed controller for their 2.9L, 3 cylinder S8000 series engines for emergency and prime power gen-set applications used in both 50 and 60 Hz markets. 

The ALN025 actuator is mounted over the pump drive gear housing and is linked to the throttle lever of a Bosch VE pump.  The pump’s throttle lever return spring is disconnected giving the actuator full authority of the throttle lever in both directions. The ECC328 electronic governor controls engine speed with the precise response to transient engine load changes with closed-loop speed control using the 40 to 80 Hz input from the generator’s AC frequency for isochronous governing.   A magnet pick-up and related wiring is not required, making this high-performance system the most popular alternative for small cost-sensitive applications.

ALN Mounting Brackets BK265 and BK266

The mounting details on these plates are complete and ready to accept the actuator.  The starter mounting plates speed-up and simplify installation and are Zinc plated (per ASTM-B633 Type II) for corrosion resistance.

Additional ALN System Components Include:

  • ALN Series Clevis Kit: KT130
  • Light Force Speed Controllers: ECC328, ESD2244, ESD2402, ESD5120, ESD5520, ESD5570, ESD5526, ESD5500-II, and EEG6550
  • Bearing Rod Ends: BR200 (1/4-28), BR300 (M5), BR400 (M6), BR500 (M8)
  • Threaded Rod: RD102 (1/4-28), RD233 (M6)

FAQ:  What do GAC Actuator Model Numbers Indicate, What is this Naming Convention?

The first 3 letters in each part number signify the type of product, the type of housing, and the type of connector. Below is a quick legend with some exceptions.

  • First Letter – A = Actuator
     
  • Second Letter – Type of Housing
    • C = Original or Sand Cast, D = Die Cast (Gen 2), L = Linear
       
  • Third Letter – Connector Type OR Linear Type
    • Connector Type:
      • ADB – has a Military Connector
      • ADC – has a Commercial Connector  (ADC100 is an exception, it has a Packard connector)
      • ADD – has a Packard Connector

Certain actuators have a ‘C’ at the end of the part number like the ADD225GSC to designate that it comes with a mating connector. While some actuators come with a mating connector by default, you should check with GAC to confirm before placing your order. 

GAC will be closed for the holidays!
From December 23rd to January 1stHappy Holidays and see you in the New Year!

Get your orders in now for 2020!

The EEG7500

GAC’s Flexible Engine Controller

The EEG7500 is an Enhanced Electronic Digital Speed Controller and Positioner Controller that operates either bidirectional motors or proportional actuators with or without a position feedback signal.  The EEG7500 provides extra performance and stability in speed governing, precise fuel limiting, and flexible authority for torque curve shaping, making it the best choice for variable speed applications.  It’s compatible with bidirectional motor solutions (torque motor, Bosch throttle body, etc.) and has open-loop actuator position control without speed control (Lambda ratio, EGR valve, etc.)


Features:

  • 3 Operating Modes:
    1. Position Feedback Governing for Variable Speed Applications
      • Offers incredible transient performance even on fixed speed applications
    2. Fixed Speed Governing without Position Feedback
    3. Actuator or Motor Positioner with Position Feedback
  • Compatible with Bidirectional Motors and Proportional Actuators
  • Built-in USB Port for Easy Configuration
  • Flexible I/O:
    • 4 Analog and 2 Discrete Inputs, 1 Analog and 3 Discrete Outputs
    • Accepts 0-5V, 4-20mA, 0-10V or +/-3V Input Signals
  • CAN SAE J1939 and RS232 Communications

GAC’s EEG7500 digital governor is designed to regulate engine speed on diesel and gaseous fueled engines. When paired with a GAC actuator, or compatible motor, the EEG system is an upgrade for any mechanical governor system that needs flexibility, precision, or accurate control of governed speed. The EEG is designed for industrial engine applications from generator sets, mechanical drives, pumps, compressors, and off-road mobile equipment.

Programmed using GAC’s Configuration Tool Software, the EEG is set up with a user-friendly interface for application configuration as well as diagnostics and ease of troubleshooting.  The GAConfig Tool is a free download from GAC’s Website.

Contact GAC at [email protected] to learn more about this product.

Start Shopping

Application of the Month:

BioWorks Energy LLC of Grand Blanc, MI built a custom biogas fueled co-generation unit using a 21.9L, V12 MAN E2842 engine.  Cogeneration (cogen) through combined heat and power is the simultaneous production of electricity with the recovery and utilization of heat.  Cogeneration is a highly efficient form of energy conversion and achieves a primary energy savings of approximately 40% compared to the separate purchase of electricity from a utility company’s electrical grid and a separate gas boiler for onsite heating.

Gaseous fueled cogen units are typically used for commercial, residential, and industrial applications and can easily be configured with a GAC ATB (integrated actuator/throttle body assembly) controlled by a variety of either digital or analog governors with an ‘Anti-Wind-Up’ PID feature that minimizes RPM over-shoot and/or under-shoot.  The ‘Anti-Wind-Up’ PID is specifically designed for gaseous fueled engines. 

BioWorks Energy LLC has specially configured their MAN engine combining GAC’s EEG7500 Enhanced Electronic Governor, operating in the positioning control mode, with an ATB552T2F14-24 integrated actuator/throttle body equipped with a position feedback sensor for the gaseous fuel control valve system.  The EEG7500 receives a 4-20 mA input signal from the PLC, controlling the ATB’s position to properly regulate the gas flow rate for all operating conditions.  Engine speed is regulated with the ESD5330 controller that features a unique power drive circuit specifically for large, higher current actuators.

GAC offers a variety of engine control systems ranging from straight single speed governors to combined air-fuel ratio and speed control systems that use the feedback from an exhaust oxygen sensor to maintain the specified air-fuel ratio.

We are happy to announce that GAC is now using IMDS, the
International Material Data System. 

Company ID 201651

Don’t know what IMDS is? More on IMDS here.

GAC will be on inventory/holiday shutdown starting Monday, November 23rd, 2020, and reopening Monday, November 30th, 2020.  Please contact us ASAP with your order to ensure timely delivery.

Please get your orders in before our break!

Thanks,
The GAC Team

ALR Series Actuators

  • Simple to Install, Mounts in Place of Existing Shutdown Solenoid, No Brackets, No Linkages
  • Spring Return to Zero Fuel
  • Maintenance Free / Cost-Effective
  • Field Proven on a Broad Range of Customer Applications
  • High-Performance Linear Bearings
  • High-Temperature / Compact Design
    • Extremely Fast ResponsePrecision Governing
    • Optimum Resolution / Speed Control with Light Force Speed Controls

The ALR Series Electronic Linear Integral Actuators are designed to mount directly to the engine’s fuel pump in place of the electronic stop solenoids. The ALR Series Electronic Linear Actuator exhibits high quality construction and are designed for high temperature operation. GAC’s unique linear electromechanical technology provides proportional actuator movement, based on actuator coil current. GAC utilizes precision linear ball bearings, instead of bushings, and a minimum number of moving parts to improve response, precision, and reliability.

ALR Applications – Engine Models

ISUZU
MITSUBISHI
KUBOTA
YANMAR
PERKINS
VOLVO
CATERPILLAR

ALR series actuators are compatible with a variety of GAC analog and digital speed controllers. Two of the most popular system combinations pair an ALR actuator with the ECC328 analog frequency controller and/or the EEG7000 digital speed controller.

Shop Actuators


EEG7000 Enhanced Electronic Governor With J1939 TSC1 Capability

  • Mini – ECU, J1939 TSC1 Control Capable with Diagnostic Messages (DM)
  • Isochronous, Variable or Customizable Droop Governing
  • 3 Fixed Speeds or Variable Speed with Direct 0-5V, 5kΩ, or 4-20mA Input
  • Built-in USB Port for Easy Configuration with Free Software
  • Engine Hour Meter and Service Timer
  • Built-in Speed Switch Output for Crank or Overspeed
  • Black Smoke Reduction, Speed Ramp Control, Load Sharing / Synchronizing Option and Cummins EFC Capable
  • Fully Sealed, IP67

The EEG7000 Enhanced Electronic Governor is designed to precisely control engine speed and quickly respond to transient diesel and gaseous fueled engine loads.  When paired with a GAC actuator the EEG7000 is a significant upgrade for any mechanical governor system that needs flexibility, precision, and/or accurate speed control.  The EEG7000 is designed for industrial engine applications for generator sets, mechanical drives, pumps compressors, to off-road mobile equipment.  The EEG7000 is programmed using the GAConfig Tool, consolidating popular features of past programming tools into a user friendly, compact package.  The 7000 can also be controlled directly over J1939 with aftermarket displays such as ComAp, Dynagen, Murphy, Deep Sea Electronics, and Sices: a solution for every application.

A built-in USB port on the front of the unit allows for easy configuration with free software available for download from the GAC website.  The GAConfig Tool provides a complete dashboard with a graphical Device Monitor screen, making it easy to optimize each parameter for your individual application.


Application of the Month:

PSP Engines, of Humble Texas, converted several Caterpillar 2.2L engines to electronic governing.  They selected the GAC EEG6550 Digital Governors, ALR190-P04-12/24 actuators, and MSP6741 magnetic speed sensors for the system’s superior performance, price point, and ease of installation.  The ALR190 series actuator mounts directly onto the fuel injection pump in place of the electric shut-off solenoid and directly engages the fuel control rack.  No external linkages or mounting bracketry required.


The EEG6550 digital governor was selected for having the most applicable combination of features.  These engines will be installed as water pump drives and the speed ramping control significantly reduces visible exhaust smoke as they accelerate under load.  The Light Force governor feature scales the PID governor range of adjustment for these small, low current, actuators providing the best resolution for ease of tuning these governor response parameters. The conversion included two MSP6741 speed sensors shown threaded into the bell housing.

GAC will be Closed Monday, October 12th
And will reopen Tuesday, October 13th.
  • Mini – ECU (J1939) TSC1 Control Capable with Diagnostic Messages (DM)
  • Isochronous, Variable or Customizable Droop Governing
  • 3 Fixed Speeds or Variable Speed with Direct 0-5V, 5kὩ, or 4-20mA Input
  • Built-in USB Port for Easy Configuration with Free Software
  • Engine Hour Meter and Service Timer
  • Built-in Speed Switch Output for Crank or Overspeed
  • Black Smoke Reduction, Speed Ramp Control, Load Sharing / Synchronizing Option and Cummins EFC Capable
  • Fully Sealed, IP67

The EEG7000 Enhanced Electronic Governor is designed to precisely control engine speed and quickly respond to transient diesel and gaseous fueled engine loads.  When paired with a GAC actuator the 7000 is a significant upgrade for any mechanical governor system that needs flexibility, precision, and/or accurate speed control.  The 7000 is designed for industrial engine applications for generator sets, mechanical drives, pump compressors, to off-road mobile equipment.  The EEG7000 is programmed using the GAConfig Tool, consolidating popular features of past programming tools into a user-friendly, compact package.  The 7000 can also be controlled directly over J1939 with aftermarket displays such as ComAp, Sices, Dynagen, Murphy, and Deep Sea Electronics: a solution for every application.

A built-in USB port on the front of the unit allows for easy configuration with free software available for download from the GAC website.  The GAConfig Tool provides a complete dashboard with a graphical Device Monitor screen, making it easy to optimize each parameter for your individual application.

Application of the Month: ADC100 Pump Mounted Actuator For All Stanadyne “D” Series Rotary Pumps

The EEG7000 controller is designed to work with proportional actuators and is proven to be very popular when paired with the ADC100 actuator.  The ADCs compact design mounts directly onto all Stanadyne “D” series rotary pumps providing fast response and precise engine speed control for isochronous, droop, or variable speed operation.  The ADC100 is approved by major OEM’s including  FPT/Iveco, and is a direct replacement for Barber Colman and Woodward DYNC 70025 & DC 70025 series actuators, offering better load acceptance/load rejection performance.

GAC has all the related hardware needed for fast, easy, installation of both the EEG7000 controller and ADC100 actuator.

FAQ:
How do I wire an ESD5XXX Series governor for speed control with an external potentiometer?

A single remote speed adjustment potentiometer can be added to the ESD to adjust the engine speed continuously over a specific speed range.  Begin by selecting a potentiometer with the desired speed range and corresponding potentiometer value as shown in the table  below.  If the exact range cannot be found, select the next higher range potentiometer.

To maintain engine stability at the minimum speed setting, a small amount of droop can be added using the DROOP adjustment. At the maximum speed setting the governor performance will be near isochronous, regardless of the droop adjustment setting.  Place a  fixed resistor across the potentiometer to obtain the exact desired range.Connect the speed range potentiometer to the ESD to Terminals G and J. Contact GAC for assistance if difficulty is experienced in obtaining the desired variable speed governing performance.

GAC will be closed Monday, September 7th, for Labor Day.
We will reopen Tuesday, September 8th.

ECC328-12/24 Low Current Optimized PID Gen-Set Controller

  • Isochronous operation
  • No magnetic speed pickup required, governs off AC frequency
  • For Genset only – 260 VAC MAX
  • Adjustable target from 40 to 80 Hz
  • Rugged hard-potted design
  • Adjustable gain and stability with impressive performance
  • Lower system cost


Application of the Month:

Fiat Powertrain Technologies (FPT) has selected the ALN025 actuator and ECC328 speed controller for their 2.9L, 3 cylinder S8000 series engines for emergency and prime power gen-set applications used in both 50 and 60 Hz markets. 

The ALN025 actuator is mounted over the pump drive gear housing and is linked to the throttle lever of a Bosch VE pump.  The ECC328 electronic governor controls engine speed with precise response to transient engine load changes with closed loop speed control using the 40 to 80 Hz input from the generators AC frequency for isochronous governing.   A magnet pick-up and related wiring is not required, making this high-performance system the most popular alternative for small cost sensitive applications.


FAQ:

Can I use an ESD5330 controller with RSC for variable speed operation?

Wide range variable speed control is easily configured by pairing an RSC671 Speed Ramping / Variable Speed module with an ESD5330 controller.  The RSC671 is a full time, linear electronic module designed to smoothly accelerate and decelerate an engine at independently adjustable rates.  The module accepts either 0-5V, 0-10V or 4-20mA variable speed input signals and is easily adjusted for diesel and / or gaseous fueled engines.  This system provides optimum variable speed performance and is typically used with larger high output actuators like the ACB2001 and ADB335-24.
 
The RSC671 variable speed control is also compatible with all ESD5100, ESD5200 and ESD5500 series speed controllers for use on any light force, standard or high force applications.

GAC’s Most Enhanced Electronic Controller

The EEG7500 is an Enhanced Electronic Digital Speed Controller that operates either bidirectional motors or proportional actuators with or without a position feedback signal.  The EEG7500 provides extra performance and stability in speed governing, precise fuel limiting and flexible authority for torque curve shaping, making it the best choice for variable speed applications.  It’s compatible with actuators other than proportional actuators (torque motor, Bosch throttle body, etc.) and has actuator position control without speed control (Lambda ratio control, EGR valve, etc.)
Features:

  • 3 Operating Modes:
    1. Variable Speed with Position Feedback Governing for Variable Speed Applications Offers incredible transient performance even on fixed speed applications
    2. Fixed Speed Governing without Position Feedback
    3. Actuator or Motor Positioner with Position Feedback
  • Compatible with Bidirectional Motors and Proportional Actuators.
  • Built-in USB Port for Easy Configuration
  • Flexible I/O:
    • 4 Analog and 2 Discrete Inputs, 1 Analog and 3 Discrete Outputs
    • Accepts 0-5V, 4-20mA, 0-10V or +/-3V Input Signals
  • CAN SAE J1939 and RS232 Communications

GAC’s EEG7500 digital governor is designed to regulate engine speed on diesel and gaseous fueled engines. When paired with a GAC actuator, the EEG system is an upgrade for any mechanical governor system that needs flexibility, precision, or accurate control of governed speed. The EEG is designed for industrial engine applications from generator sets, mechanical drives, pumps, compressors, and off-road mobile equipment.

Programmed using GAC’s Config Tool Software, the EEG is set up with a user-friendly interface for application configuration as well as diagnostics and ease of troubleshooting.  The GAConfig Tool is a free download from GAC’s Website.

Contact GAC at [email protected] to learn more about this product.

The EEG7500


Application of the Month:

Irrigation System Powered by a Cummins VT1710 – 28.0L, V12 Engine Equipped with:

  • Two GAC – ATB652T2F14-24 Integrated Actuator Throttle Bodies (ATB’s) one on each bank.
  • GAC’s DDM101 – Dual Driver Module that uses the two actuator position feedback signals and two exhaust temperature sensors to balance the fuel flow to each bank maintaining equal exhaust temperatures.
  • GAC’s ESD5111 Speed Controller, this single governor controls the load response of both balanced actuators.

Cummins VT1710 – 28.0L, V12 Engine
DDM101 Dual Driver Module
ESD5111 Speed Controller
GAC’s Dual Driver System is available for both gaseous fueled and diesel engines using a variety of Feedback Sensor Equipped Actuators.
Recommendations Include:

FAQ:

HOW DO I ADJUST THE IDLE AND MAX SPEEDS ON MY ATB THROTTLE BODY ACTUATOR?

An adjustable Idle Stop screw (Min Throttle Adjustment) and Max Throttle Adjustment are provided to set a fixed opening if desired.  The diagram below generally shows where the adjustments can be found on each ATB model.

NOTE: The Max Throttle Stop is preset to 65° rotation.

  • You must completely remove the first sealing screw.  This will give you access to the inner set screw.
  • Using a 2.5mm Hex wrench, turning the wrench clockwise will increase the fixed throttle opening.
  • Adjustment is complete once you have replaced the sealing screw.  Apply Loctite 518 or equivalent.  The sealing screw should be tightened to snug plus ¼ turn.

GAC will be closed Friday, July 3rd, 2020 for Independence Day and will reopen Monday, July 6th. 

We here at Governors America Corp. would like to take a moment to thank the essential healthcare workers on the front lines of the Covid-19 pandemic. 

Thank you, healthcare heros


The ESD5330

The ESD5300 speed control unit is rugged enough to be placed in a control cabinet or engine mounted enclosure with other dedicated control equipment. The circuit board is conformally coated to seal out moisture and resist vibration. If water, mist, or condensation can come in contact with the controller, it should be mounted vertically. This will allow any accumulated fluids to drain away from the speed control unit.

24 V DC • Standard Unit

  • Two-element speed switch
  • Speed ramping idle to operating speed
  • Starting fuel control for lower engine exhaust emissions
  • Unique actuator power drive circuit
  • Accessory inputs for load sharing
  • Fixed, Droop, and Variable speed governing capable
  • Protection against reverse battery voltage
  • Protection against transient voltage
  • The ESD5340 is available with a full fuel at start feature for rapid startup in marine applications
  • The ESD5330/5340 is specified for the ACB2001 and the ADB335 / ADB335F, but is compatible with all GAC actuators

Start Shopping


APPLICATION OF THE MONTH:

Resolving a speed / frequency instability issue on a Perkins 4016, 61L, V16 engine powered gen-set. Perkins 4016TAG, 61L, V16 Engine

A 500+ bed hospital in London, UK called in GAC Distributor, IPU Engine Controls Group, now a part of ComAp Control Limited (UK), to fix an unacceptable instability problem with their emergency standby generator.  IPU supplied a GAC ACB2001 actuator and ESD5330 electronic governing system powerful enough to control the engine under no-load and full-load conditions.  Paralleling tests demonstrated the system’s ability to reliably synchronize and parallel the gen-set to the grid.

The ESD5330 governor precisely controls engine speed and provides a fast, precise response to transient load changes with every advanced feature GAC offers.  It features a powerful actuator drive circuit specifically designed for the ACB2001 actuator that delivers 12 Lb-Ft [16.3 Nm] of torque over 35° of shaft rotation.

The upgraded gen-set was returned to service on August 24th 2015.  Follow-up checks to date have verified that it’s been operating correctly in STOR mode, successfully exporting 1.1 MW of electrical power to the grid twice a week without issue. 

Closed in Honor of Memorial DayGAC will be closed Monday, May 25th, 2020 for Memorial Day. We will reopen Tuesday, May 26th. Thank you!

To Our Valued Customers and Distributors,

Governor Charlie Baker has issued an executive order requiring all non-essential businesses in Massachusetts to close their facilities to workers, customers, and the public. The order is effective from Tuesday, March 24th at 12 p.m. and ends on April 7th. A “stay-at-home” advisory has also been issued and all non-essential employees have been instructed to work from home if applicable.

Governors America Corp. remains open, due to our status as an essential business, as defined by the Department of Homeland Security and Governor Baker’s emergency order:

https://www.cisa.gov/critical-infrastructure-sectors

https://www.mass.gov/info-details/covid-19-essential-services

GAC is committed to keeping our customers operational during this difficult time.  Please reach out to us if you have any needs or concerns.

We thank you for your support and hope that everyone stays safe and healthy.

The Governors America Corp. Team


Application of the Month:

GAC Equipped Mitsubishi S12R, 49.03L, V12 Engine
This S12R engine was equipped with an ACB2001 actuator, ESD5340 full-featured controller and an MSP6728C magnetic speed sensor to precisely regulate the generator frequency used in a marine application.

This system precisely controls engine speed and provides a fast response to transient load changes.  It features a powerful actuator drive circuit specifically designed for the ACB2001 actuator that delivers 12 Ft-Lbs. [16.3 Nm] of torque over 35° of shaft rotation.

The ESD5340 Governor – Offers Superior Full Fuel Control from Rated Operating Speed to Low Idle Due to Its Unique Combination of Features Like Dual Gain Adjustment, One for Idle and One for Operating Speed, with Independently Adjustable Acceleration and Deceleration Speed Ramping Controls.  The ESD5340 Also Includes.

  • A Two Element Speed Switch
  • Dual Speed Ramping from Idle to Operating Speed, with Acceleration and Deceleration Adjustments
  • Wide Range Speed Control Compatible
  • Start Fuel Control for Lower Exhaust Emissions
  • Enhanced Start Circuit for Large Bore Engines
  • Isochronous, Droop or Variable Speed Governing
  • Accessory Inputs for Load Sharing
  • High Current Controlled Output, Designed for the ACB2001
  • Dual Gain, One at Idle & One at Operating Speed
  • Adjustable Chop Frequency for Added Stability

MHI – S12R: 2,992 Cubic Inch / 49.03L V12 Engine

ACB2001 Actuator Installation

Shop the ACB2001

FAQ of the Month:  Do GAC’s Speed Controls take time to power on?

The answer is it depends.  Analog governors do not take any time to “power on”, i.e. the moment battery power is supplied to the governor, the circuit will function immediately.  Digital governors on the other hand, like all processor-based controllers, require a certain amount of time to run through the processor’s startup routine and read EEPROM for its firmware before it is ready to execute any commands.  For GAC’s digital governors this “power on” time is strictly controlled within ≤500 ms in order to meet stringent requirements, such as in an emergency backup generator’s startup sequence.

Shop Speed Controls

ACB2001 For Large Diesel and Natural Gas Applications

The ACB2001 actuator is a rotary output, 24V, linear torque proportional electric servo designed for mechanical actuation of fuel system control levers requiring torques in the 5 lb·ft range. The actuator is capable of 35 degrees of rotation with torques as high as 12 lb·ft. Internal springs provide fail-safe operation by forcing the actuator to the fuel shut off position when the actuator is de-energized. Both CW and CCW output shafts are available. Engine applications include large block pumps, and dual-medium and large size carburetors.

  • Rapid response
  • CW/CCW rotation
  • Internal return springs
  • Maintenance-free
  • Universal design
  • Easy installation

Application of the Month: The 2001 Series

The ACB2001 is compatible with ESD5330 and ESD5340 speed controllers that have a unique power drive circuit for optimum performance.  The ESD5330 / 5340 controllers are rugged enough too mounted in a control cabinet or in an engine mounted enclosure.  Their circuit boards are conformally coated to seal out moisture and resist vibration.

The ESD5330 / 5340

ACB2001 Actuator Mounted on Natural Gas Applications


FAQ:

Controlling Black Exhaust Smoke at Engine Start-up

One of the most obvious issues with standby gen-sets is the large plume of black exhaust smoke emitted during engine start and acceleration.  Many standard electronic governors over-fuel the engine to guarantee starting, the bigger the engine the worst the problem becomes.  If you have multiple engines on site that all start at the same time in response to a mains failure, the amount of black smoke emitted can be very severe. 

GAC offers a reliable, proven solution that eliminates black smoke emissions from gen-sets equipped with mechanical fuel injection systems.  A variety of digital and analog governor controllers include adjustable “START FUEL” and “SPEED RAMPING” features that enable the optimum compromise between start time, acceleration and visual exhaust smoke.The START FUEL feature sets the initial actuator position (delivered fuel quantity) at the start of cranking and is adjustable from 0 to 100%.  The SPEED RAMPING adjustment sets the rate of acceleration and deceleration between idle and rated speed.  These parameters can be applied to both constant and variable speed applications.

The STARTING FUEL and SPEED RAMPING adjustments control the start characteristics of the engine.  Proper adjustments provide a smooth start with minimum excess fuel to significantly reduce exhaust smoke.

Starting Fuel Adjustment:

Turning the STARTING FUEL adjustment clockwise will increase the amount of fuel delivered to the engine during cranking.  With the adjustment fully counter-clockwise, the amount of fuel delivered will be very low or zero depending upon the actuator and linkage arrangement.  With the adjustment fully clockwise, the actuator will move to the 100% fuel position during cranking. 

Speed Ramping Adjustment:

Turning the SPEEP RAMPING adjustment clockwise will slow the acceleration of the engine, it could take as long as 20 seconds depending on the speed range selected.  With the adjustment fully counter-clockwise, the ramping will effectively be eliminated and acceleration will be immediate.

Idle speed must be set for proper STARTING FUEL and SPEED RAMPING function even if the idle feature is not used.

For the initial start, insure that the STARTING FUEL potentiometer is turned full clockwise (maximum fuel) and the SPEED RAMPING is turned full counter-clockwise (fastest acceleration).

For final adjustment from idle speed, turn the START FUEL counter-clockwise until the engine speed begins to drop.  Increase STARTING FUEL slightly so idle speed is returned to the desired level.

Adjust SPEED RAMPING for the least amount of exhaust smoke during acceleration to rated speed.

Universal Speed Control Mini-ECU for Natural Gas or Diesel Engines With J1939 TSC1 Capability

  • Mini – ECU: TSC1 Control Capable with Diagnostic Messages (DM)
  • Compatible with many CAN displays (ComAp, DSE, Sices, DyGen Murphy, etc.)
  • Isochronous, Variable or Customizable Droop Governor
  • 3 Fixed Speeds or Variable Speed with Direct 0-5V, 5kὩ, or 4-20mA Input
  • Built-in USB Port for Easy Configuration with Free Software
  • Engine Hour Meter and Service Timer
  • Built-in Speed Switch Output for Crank or Overspeed
  • Black Smoke Reduction, Speed Ramp Control, Load Sharing / Synchronizing Option and Cummins EFC Capable
  • Fully Sealed, IP67

The EEG7000 Enhanced Electronic Governor is designed to precisely control engine speed and provides a fast, precise response to transient engine loads for diesel and gaseous fueled engines.  When paired with a GAC actuator the EEG is a significant upgrade for any mechanical governor system that needs flexibility, precision or accurate speed control.  The EEG is designed for industrial engine applications from generator sets, mechanical drives, pumps compressors, and off-road mobile equipment.  The EEG7000 is programmed using GAConfig Tool, consolidating the most popular features into one user-friendly, compact package.  It can be controlled directly over J1939 with aftermarket displays such as ComAp, Dynagen, Murphy, etc.; a solution for every application.

A Built-in USB port is on the front of the unit for easy configuration with Free Software available for download from our website.  The GAConfig Tool provides a complete dashboard making it easy to optimize each parameter for your individual application.


Application of the Month: Natural Gas-Fueled Cogeneration Unit Powered by Kubota WG752 – 3 Cylinder, 0.74L Engine Equipped with GAC:

  • ATB251T1N1-12 – Integrated Actuator / Throttle Body
  • AFR210 Integrated Air/Fuel Ratio Control and Governor
  • MXSB20-STM Venturi Mixer and Stepper Fuel Control Valve Assembly

Cogeneration (cogen) through combined heat and power is the simultaneous production of electricity with the recovery and utilization of heat.  Cogeneration is a highly efficient form of energy conversion and achieves a primary energy savings of approximately 40% compared to the separate purchase of electricity from a utility company’s electrical grid and a separate gas boiler for onsite heating.

Natural gas-fueled cogen units are typically used for commercial, residential and industrial applications and can easily be configured with a GAC ATB (integrated actuator/throttle body assembly) controlled by a variety of either digital or analog governors with an ‘Anti-Wind-Up’ PID feature that minimizes RPM over-shoot and/or under-shoot.  The ‘Anti-Wind-Up’ PID is specifically designed for gaseous fueled engines. 

GAC offers a variety of engine control systems ranging from straight single-speed governors to combined air-fuel ratio and speed control systems that use the feedback from an exhaust oxygen sensor to maintain the specified air-fuel ratio.


Is Your Product GAC Authentic?

GAC takes pride in designing and manufacturing high quality products in the U.S.A. Unfortunately, the down-side to creating such a product means many counterfeited GAC products exist, attempting to capture the essence of GAC. At first glance, these counterfeits may look like a GAC product but they certainly do not perform like one. You can always verify the authenticity of your product by calling or emailing GAC.

email: [email protected]
call: +1 413 233 1888

Examples of counterfeit GAC products:

Happy Lunar New Year!


GAC will be closed for President’s Day, Monday, February 17th and will reopen Tuesday, February 18th.

ADB335 Series Actuators

ADB335 Series Actuators:

  • 24 Volt DC
  • 3.3 Ft-Lbs (4.5 Nm) Net Torque
  • 65° Shaft Rotation
  • Die-Cast Housing
  • Military Style Connector
  • Available Options:Position Feedback Sensor
    • Mating Connectors, Straight and 90°
    • 12 Foot (3.6m) Cable Harness Assemblies with Straight or 90° Connectors
    • Mounting –  Vibration Dampers Included

The ADB335 Series universal electric actuator is a rotary output, proportional servo. This electromechanical actuator is typically used for mechanical actuation of fuel system control levers for diesel and gaseous fueled engines. 65 degrees of travel allows for direct linear coupling to throttle bodies.  An internal spring provides fail-safe operation by forcing the actuator to the fuel shut off position when the actuator is de-energized. The design combines rapid transient response with a wide rotational angle for extended linear travel and proven reliability in the field.  It’s easy to install, built with precision bearings and there’s no maintenance required.


Application of the Month:

One of our OE customers prepared several dynamometer test cells for engine durability testing. They needed to interface a variable speed controller with their PLC to run automated durability tests, cycling speed and load according to predetermined operating schedules. The flexibility to properly control different engines with a variety of fuel systems was required.

The ADB335-24 actuator, ESD5330 speed controller and RSC671 variable speed module was selected as the best choice to support a variety of engine installations. The RSC671 accepts the 0 to 5 volt speed signal that can be scaled to cover a variety of RPM ranges. The RSC671 / ESD5330 combination provides the ability to step through the RPM range and maintain a given RPM setting while loading and unloading the engine. The higher force and travel of an ADB335-24 actuator allows the same control system to be applied to several engine applications.

Pictures of one of their early prototype control systems:

FAQ:

How can I get product information and technical bulletins describing installation dimensions, specifications, operating instructions and troubleshooting recommendations?

Product Bulletins are available for download from our website, www.governors-america.com. Go to the page for the product you purchased to find PDF versions of the Product Bulletin, the Sales Sheet, Users Guide and SmartView software and/or the Interface Tool used with a given governor controller.

GAC will be closed on January 1st, 2020 to celebrate the new year! We will reopen on January 2nd

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