DDM101 Series
• Dual Driver Module
• Drives 2 Diesel or Gaseous Actuators Simultaneously for Twin Bank Applications
Independent Gain and Stability Control
Fuel and Temperature Balancing
Exhaust Temperature Monitoring & Control
View the DDM101 Dual Driver Module




THE DDM101

The DDM101 is an accessory module whose function is to drive two independent, feedback-equipped GAC electronic actuators from one GAC ESD Electronic Speed Device.  This module is installed where two actuators are required for a single engine i.e., two independent diesel fuel injection pumps or two gaseous throttle body actuators (ATB’s).

The module drives two feedback-equipped electric actuators equally so that both banks receive the same delivered fuel quantity. The DDM101 has two advanced features, fuel and exhaust temperature balancing adjustments that insure both banks of the engine produce the same amount of power, safely.

The Dual Driver Module is compatible with a pair of ATB Series actuators for gaseous fueled applications or two ACE275K or two ADD175F Series actuators for diesel engine fuel control. 

 See the product details 



APPLICATION OF THE MONTH: QST30 WITH BOSCH EDC, KT197 WITH 175

The 30.5L – V12 Cummins QST30 engine comes from the factory with a Cummins PCC controller and a Bosch EDC actuator mounted on each injection pump.  The engine is used in a variety of applications  with a rated power range of 760 to 1500 HP (567 to 1119 kW) but it’s control system is not easily accessible to make adjustments or repairs, making any aftermarket service difficult.  GAC’s Dual Driver Module (DDM101) and governor control system is proven to be the best alternative given its ease of installation, simple calibration procedure and cost effective components. 



Converting to the GAC system includes the installation an ADD175F actuator on each pump with a KT197 adapter kit.  Installing a K-Type thermocouple in the exhaust stream of each bank and connecting the actuators, position feedback sensors and thermocouples to the DDM101 module and ESD5111 governor controller.  The DDM101 uses the input from the two thermocouples and two position sensors to balance and maintain an equal output from both banks of the engine while being controlled by a single governor. 

A typical Cummins QST30 control system consists of:


ADD175F Actuator Mounted on a QST30 Fuel Injection Pump with KT197 Installation Kit

               

The GAC parts listed are not compatible with the Cummins PCC controller or the Bosch injection pump mounted actuators.  These high-performance components act as a standalone complete dual pump governor system that does not require interaction with the Cummins controller.



FAQ OF THE MONTH: WHAT IS THE AUX INPUT ON ESD5XXX SERIES AND HOW DOES IT WORK?

The Auxiliary (AUX) input, terminal ‘N’, accepts signals for load sharing and synchronizing multiple generators.  The input is reversed polarity so increased voltage will decrease speed at the rate of (-)145 Hz / volt, it’s a nominal 5.0 volt setting with a range of ± 5.0 volts.  Any accessory connected to terminal N must be shielded. 




If an auto synchronizer is used alone, not in conjunction with a load sharing module (LSM), a 3 Ohm resistor should be connected between Terminals N and P.  This is required to match the voltage levels between the speed control unit and the synchronizer. If a GAC LSM is used, there is no need for this resistor.

A +10 volt regulated supply from Terminal P can be used to provide power to GAC governor system accessories, such as the LSM and RSC Series.  Up to 20 mA of current can be drawn from this supply.  Ground reference is Terminal G.


THROTTLE BODY ADAPTOR PLATES

 Adaptor to mount a Governors T2 Throttle body to small bore Ford Intake. KT41761F  Adaptor to mount a T2 Throttle body to a Bosch bolt pattern. PL680
 
 Adaptor to mount a Governors T2 Throttle Body to any intake with a square bore Holley bolt pattern. KT41761 Adaptor to mount a 200 Series Impco mixer on a T-1 Throttle Body. KT225-T1 
   
 Adaptor for mounting a 425 Impco to any T2 Throttle Body. KT425 This will mount any ATB T2 Series Throttle body to a 2 barrel intake manifold with matching dimensions. Bolts to mount Throttle Body included






ON DECEMBER 5 - 7, 2017 IN LAS VEGAS, NV USA
LAS VEGAS CONVENTION CENTER | NORTH & CENTRAL HALLS
 


GAC  WILL BE CLOSED MONDAY DECEMBER 25TH, FOR CHRISTMAS DAY AND MONDAY, JANUARY 1ST, 2018 FOR NEW YEARS DAY. HAPPY HOLIDAYS!