ComAp IG-NT Reference Manual page 319

MCB UV
There are also other outputs availabe for GCB control:
Binary output: Stop Solenoid
Related FW 3.0
Description This output is used at diesel engines equipped with fuel valve, which must be
energized to stop the engine.
The output is closed when the engine has to stop, remains closed while the
engine is stopping and is opened back if the engine has successfuly stopped and
stop time elapsed. For other stopping sequences please refer to
chapter.
The total time this output is continuously active is never shorter than
i.e. if the gen-set stops quickly, the output may remain closed eventhough all
symptoms indicate the engine is stopped.
This output is also closed if the engine begins to rotate unexpectedly, i.e. if it is
started manually directly on the engine. To allow the engine to be operated
manually without intervention from the controller, switch the controller to the
emergency manual mode using the input
N
OTE
Learn more about this topic in the separate chapter
Binary output: Stop Pulse
Related FW 3.0
Description One second pulse is issued at this output when the engine is required to stop (i.e.
this pulse does not commence stopping sequence but it is rather an actual
command to engine physical stopping). The output is especially intended to be
IGS-NT Combi, SW Version 3.0, ©ComAp – May 2013
IGS-NT-Combi-3.0 Reference Guide.PDF
COIL OUTPUT TIMING

MCB close/open

MCB ON coil

MCB OFF coil
:
Stop sequence
Emerg. manual.
Stop sequence.
Stop time,
319