IS-NT-Async-SPI, SW Version 1.2, ©ComAp – February 2011
IS-NT-Async-SPI-1.2.PDF
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Warming
The output is closed during warming procedure – the gen-set power is kept at Warming load level in this
period.
Soft load
The output is closed during gen-set soft loading state – the gen-set power is ramping up, i.e. since GCB was
closed until the end of the ramp.
Loaded
The output is closed when gen-set is loaded – GCB is closed and no load ramp is active.
Soft unload
The output is closed during gen-set soft unloading state – gen-set power is ramping down.
Cooling
The output closes during engine Cooling state, i.e. from GCB opening to stop command.
Stopping
The output closes after the command to stop has been issued. It opens if “still engine” conditions are fulfilled.
The output also closes if the engine begins to rotate spontaneously. It stays closed until “still engine”
condition is achieved.
Off mode
The output is closed, if OFF mode is selected.
Man mode
The output is closed, if MAN mode is selected.
Sem mode
The output is closed, if SEM mode is selected.
Aut mode
The output is closed, if MAN mode is selected.
GenParams OK
The output is copy of generator status LED on controller front panel. The output is closed if gen-set is
running and all generator electric values are in limits and no 2
nd
level alarm is active (when only 1
st
level
alarm is active, the output is closed).
Hint:
Use this output for switching on of auxiliary device (e.g. cooling pump) driven from generator voltage
independently on the GCB status.
MainsParams OK
The output is copy of mains status LED on controller front panel. The output is closed if mains electric values
are in limits.
In synchronism
The output closes during synchronizing if all matching conditions are fulfilled. It opens if corresponding
breaker is closed (xCB status output get active).
Hint:
Synchronizing matching conditions:
- Slip frequency < 0,25 Hz
- Gen to Mains/Bus voltage phase shift within Sync/Load ctrl:Phase window
- Gen and Mains/Bus voltages within Sync/Load ctrl:Voltage window
- Sync/Load ctrl:Dwell time elapsed
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