id-fpc-global-guide_3_manual

An ECU which enables speed control can be controlled by controller. The speed request in % (ECU SpeedAdj
(page 83)) is transferred to RPM range according the formula: 0 % = 1200 RPM; 100 % = 2700 RPM.
The controller always sends either speed request = 0 % or the IDLE command via J1939 in controller IDLE
state. In the TEST mode the IDLE operation can be controlled by NOMINAL/IDLE (PAGE 121).
If the connected engine is Cummins communicating via RS232, it is necessary to set the setpoint Basic
settings: RS232 mode = CUMMINSMB.
Loss of communication causes shutdown of the running engine. On the contrary, the ECU can be switched off
at quiescent engine that means not-communicating ECU is in that moment normal situation. All values from
ECU shall show ####, but no alarm is displayed. The output ECU CommOK follows the real situation that
means it is not active anytime when the ECU does not communicate.
The output ECU PwrRelay closes at the beginning of prestart and opens if the engine shall be stopped.
The engine is started via standard contact output or via CAN bus (for Volvo and Scania engines). For other
engines J1939 is used for monitoring only.
ID-Lite FPC 1.6.0 Global Guide 28