The D+ connection is used for two purposes:
1: Detection of engine running (in case the RPM input is not used).
This is done by detection of the 12/24 V DC build-up of the charger generator. When voltage comes up,
the engine is running.
2: Helping the charger generator build up voltage.
When the crank relay output activates, it is fed 12/24 V from the emergency stop input (normally closed).
At the same time, a 140 mA DC constant current generator will feed current into the terminal 93 (D+) con-
nection. This will help excite the charger generator.
AGC 200 installation instructions
4189340610 UK
Wirings
DEIF A/S Page 55 of 67
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