InteliCompact
NT
, SW version 2.1
InteliCompact-NT-2.1-Reference Guide.pdf, ©ComAp – May 2015
Binary output: ECU RedLamp
This output is active when the ECU sends an active “red lamp” flag, i.e. it
has detected a critical malfunction and the engine should not be operated
until a service check is performed. This flag is taken from the DM1 frame on
standard J1939 ECUs. Some ECUs provide this flag in their own proprietary
frames and some do not provide the flag at all.
Binary output: ECU PowerRelay
This output is to be used for control of “keyswitch” input of an ECU. If the
particular ECU does not have keyswitch or a similar input, it can be used for
control of DC power for the ECU.
The output closes together with Prestart and remains closed for the entire
duration that the engine is running. It is opened at the moment that the
engine comes to a stop (i.e. together with the Fuel Solenoid).
See the picture below for futher detail on how Wrn Ecu Comm is evaluated.
Time
Prestart
On
Binary Outputs
Prestart
Off
Engine RPM
Maximum Cranking Time Cranking Fail Pause
Engine is runningPrestart Time
Starting RPM
Cranking Fail Pause
Starter
On
Starter
Off
ECU Power Relay
On
ECU Power Relay
Off
Start
Wrn ECU Comm
Evaluated
ECU COMMUNICATION ERROR EVALUATION
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