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
MainsOper
Mains is present, MCB closed
MainsFlt
Mains cut off
– immediate state
MainsFlt
Mains cut off
– takes EmergStart del
IslOper
Island operation
MainsRet
Mains recover
Brks Off
GCB, MCB opened
MinStabTO
Minimal Stabilization Timeout
MaxStabTO
Maximal Stabilization Timeout
Trans Del
Forward return break delay. Delay between GCB opening and MCB closing
List of possible events
Events
specification
Protection
type
Information on binary
output available (See
list of
Binary outputs
)
Description
Wrn Batt Volt
WRN
YES
Battery voltage is out of limits given by
Batt
Undervolt/Batt OverVolt
setpoints.
Binary input
Configurable
YES
Configurable Warning/Trip alarms on the
inputs of IA-NT.
IL-NT-BIO8
Configurable
YES
Configurable Warning/Trp alarms on the
inputs of IL-NT-BIO8.
ActCallCH1Fail
WRN
NO
Active call on channel 1 failed.
ActCallCH2Fail
WRN
NO
Active call on channel 2 failed.
Low BackupBatt
WRN
NO
RTC backup battery is flat
Trp BatteryFlat
TRP
YES
If the controller switches off during starting
sequence due to bad battery condition it
doesn’t try to start again and activates this
protection.
Trp Start Fail
TRP
YES
Gen-set start failed.
Wrn Stop Fail
WRN
YES
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)
TRP
TRP
YES
The generator voltage is out of limits given
by
Gen <V Trp
and
Gen >V Trp
setpoints.
Trp Gen V Unbal
TRP
YES
The generator voltage is unbalanced more
than the value of
Volt Unbal Trp
setpoint.
Trp Gen >, <Freq
TRP
YES
The generator frequency is out of limits
given by
Gen >Freq Trp
and
Gen <Freq Trp
setpoints.
Gen CCW Rot
WRN
NO
Genset voltage phases are not wired
correctly. MCB closing is prohibited by
controller.
Trp Amps Unbal
TRP
NO
The generator current is unbalanced.
Trp Amps IDMT
TRP
NO
Generator current exceeds the limit for
IDMT protection given by
Nominal current
and
Amps IDMT Del
setpoints.
Trp Overload
TRP
YES
The load is greater than the value given by
Overload
Trp
setpoint.
Trp Short Crct
TRP
YES
Generator current is higher than the value
given by
Short Crct Trp
setpoint.
Mains Lx >V
MF
YES
The mains voltage is out of limits given by