InteliLite
NT
AMF26-P, SW version 2.4, ©ComAp – January 2016 117
AMF26-P-2.4 Reference Guide.pdf
Hint:
Mains failure is not written to alarm list!
Alarm time chart
"All the time" configured protections, I >, I >>, RPM >>, mains failure detection
GCB opened
"Engine running only" protections, engine
water temperature luboil pressure
Underspeed
Stop
Start
Starter OFF
ProtectHoldoff
Switched to
nominal speed
Min Stab Time
GCB closed
Max Stab Time
Gen >V, <V,
>Freq, <Freq
Idle Time
5 sec
Voltage phase sequence detection
IL-NT controller detects phase sequence on both generator and mains/bus voltage terminals. This
protections are important after controller installation to avoid wrong voltage phases phase connection.
Following alarms can be detected:
Wrong phase sequence
There is fix defined phase sequence in IL-NT controller L1, L2, L3. When the phases are connected in
different order (e.g. L1,L3,L2 or L2,L1,L3) following alarms are detected:
Gen CCW Rot = wrong generator phase sequence
Mains CCW Rot = wrong mains phase sequence
Wrong Mains phase sequence detected. Voltage phases are not wired correctly. MCB closing is
prohibited by controller.
Wrong Generator phase sequence detected. Voltage phases are not wired correctly. GCB closing is
prohibited by controller.
Sensor Fail detection
Sensor Fail Fls is detected when measured value is 6 percent out of range. Controller screen displays
in this case string #### instead measured value.
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