Inteli NT GeCon MINT, SW Version 1.4, ©ComAp – June 2007
IGS-NT-GeCon-MINT-1.4.PDF
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GCB ON coil
The pulse output for GCB closing. If GCB synchronizing is enabled, the pulse length is 2s, if not, pulse length
is 5s.
Hint:
ON coil can only be closed if UV coil is already active for at least 1s and MinStab time has elapsed.
GCB OFF coil
The pulse output for GCB opening. If GCB synchronizing is enabled, the pulse length is 2s, if not, pulse
length is 5s.
GCB UV coil
GCB undervoltage coil. Output is closed if generator values are within limits and GCB is ready to be closed.
It is opened if GCB should be open, and then closed again if generator electric values are in limits. If GCB
synchronizing is enabled, the opening pulse length is 2s, if not, pulse length is 5s.
Hint:
UV coil automatically opens and OFF coil closes if GCB is closed spontaneously, not from controller’s
activity. This state lasts until the GCB status has been deactivated.
The only exception is during synchronization state, as an external device is allowed to close the GCB.
GCB status
Indicates breaker state expected by controller (based on gen-set state, controller commands and breaker
feedback). Can be used for external indication of breaker status according to controller’s information.
MCB status
Indicates breaker state expected by controller (based on gen-set state, controller commands and breaker
feedback). Can be used for external indication of breaker status according to controller’s information.
Neutral CB C/O
Neutral circuit breaker close /open output controls the generator Neutral circuit breaker. It is intended for
contactors – provides a continual active signal if NCB should be closed. See also setpoint Neutral cont.
LdShed stage 1
LdShed stage 2
LdShed stage 3
Load shedding outputs for partial load switching.
Binary outputs – Control loops
AVR up
AVR dn
Binary outputs for Volt / PF control by motorized or electronic potentiometer.
Speed up
Speed dn
Binary outputs for Synchronizing and Load control. Outputs can be used instead of analog Speed governor
output for older engine types. Minimum pulse duration is 0,15 sec. Maximum pulse duration is 10,0 sec.
Hint:
When Speed governor output stays near to the limit value (SpeedGovLowLim+0,2 V or SpeedGovHiLim-0,2
V) for more than 2 sec, the “Wrn SpdRegLim” message is displayed in the Alarm list and recorded to History.
When AVRi output stays on <2% or >98% for more than 2 sec, the “Wrn VoltRegLim” is displayed in the
Alarm list and recorded to History.
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