InteliATS
NT
PWR, SW version 2.5, ©ComAp – May 2015 85
IA-NT- PWR-2.5-Reference Guide.pdf
Gen-set Operation States
Electric state machine
Mains is present, MCB closed
Mains cut off – immediate state
Mains cut off – takes EmergStart del
Minimal Stabilization Timeout
Maximal Stabilization Timeout
Forward return break delay. Delay between GCB opening and MCB closing
Information on binary
output available (See
list of Binary outputs)
Battery voltage is out of limits given by Batt
Undervolt/Batt OverVolt setpoints.
Configurable Warning/Trip alarms on the
inputs of IA-NT.
Configurable Warning/Trp alarms on the
inputs of IL-NT-BIO8.
Active call on channel 1 failed.
Active call on channel 2 failed.
RTC backup battery is flat
If the controller switches off during starting
sequence due to bad battery condition it
doesn’t try to start again and activates this
protection.
Gen-set stop failed. The alarm appears if
the STOP command fails and the START
command was issued before.
Trp Gen Lx >V
Trp Gen Lx <V
(where x=1,2,3)
The generator voltage is out of limits given
by Gen <V Trp and Gen >V Trp setpoints.
The generator voltage is unbalanced more
than the value of Volt Unbal Trp setpoint.
The generator frequency is out of limits
given by Gen >Freq Trp and Gen <Freq Trp
setpoints.
Genset voltage phases are not wired
correctly. MCB closing is prohibited by
controller.
The generator current is unbalanced.
Generator current exceeds the limit for
IDMT protection given by Nominal current
and Amps IDMT Del setpoints.
The load is greater than the value given by
Overload Trp setpoint.
Generator current is higher than the value
given by Short Crct Trp setpoint.
The mains voltage is out of limits given by
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