6. Additional functions
6.1 Start functions
The controller will start the genset when the start command is given. The start sequence is deactivated when the remove starter
event occurs or when the running feedback is present.
The reason for having two possibilities to deactivate the start relay is to be able to delay the alarms with run status.
If it is not possible to activate the run status alarms at low revolutions, the remove starter function must be used.
An example of a critical alarm is the oil pressure alarm. Normally, it is configured according to the shutdown fail class. But if the
starter motor has to disengage at 400 RPM, and the oil pressure does not reach a level above the shutdown set point before 600
RPM, then, obviously, the genset would shut down if the specific alarm was activated at the preset 400 RPM. In that case, the
running feedback must be activated at a higher number of revolutions than 600 RPM.
t
RPM
RPM
Remove starter
Oil pressure
Running
1000
600
400
0
6.1.1 Digital feedbacks
If an external running relay is installed, then the digital control inputs for running detection or remove starter can be used.
Running feedback
When the digital running feedback is active, the start relay is deactivated and the starter motor will be disengaged.
DESIGNER'S HANDBOOK 4189341275A EN Page 99 of 196
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