InteliATS
NT
PWR, SW version 1.0, ©ComAp – March 2009 55
IA-NT- PWR-1.0-Reference Guide R1.pdf
Gen-set Operation States
Electric state machine
MainsOper Mains is present
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/Shutdown alarms on
the inputs of IA-NT.
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.
ParamFail NONE NO Wrong checksum of parameters. Happends
typically after downloading new firmware or
changing of the parameter. The controller
stays in INIT mode. Check all parameters
and write at least one new parameter.
Trp Gen Lx >,<V TRP YES The generator voltage is out of limits given
by Gen <V Sd and Gen >V Sd setpoints.
Trp Gen V Unbal TRP YES The generator voltage is unbalanced more
than the value of Volt Unbal Sd setpoint.
Trp Gen >Freq TRP YES The generator frequency is out of limits
given by Gen >Freq Sd and Gen <Freq Sd
setpoints.
Wrn Amps Unbal TRP NO The generator current is unbalanced.
EmergencyStop TRP NO If the input Emergency Stop is opened
shutdown is immediately activated.
GCB Fail TRP NO Failure of generator circuit breaker.
MCB Fail MF NO Failure of mains circuit breaker.
Wrn GeStateNA WRN NO Neither GenerProtect enabled nor BI
GenReadyToLoad defined. At least one
must be enabled / configured.
Trp GenRd Fail TRP NO Signal BI GenReadyToLoad lost
Wrn Stop Fail WRN YES Gen-set stop failed. The alarm appears if
the STOP command fails and the START
command was issued before.
Low BackupBatt WRN NO RTC backup battery is flat