InteliLite
NT
AMF26-P, SW version 2.4, ©ComAp – January 2016 113
AMF26-P-2.4 Reference Guide.pdf
2
If during start-up sequence mains returns, then MCB is reclosed with delay MCB Close Del (if
opened, depending on MCB Opens On setpoint) and start-up sequence is interrupted.
3
If mains fails during stop procedure (cooling) again, stop sequence is interrupted, MCB opened and
GCB closed with delay Transfer Del.
See also chapter Circuit breakers timing.
TEST mode
The setpoint ReturnFromTEST influences the behavior of TEST mode.
Caution: The gen-set starts automatically and is always running in TEST mode!
The setpoint ReturnFromTEST = MANUAL
While TEST mode is selected, gen-set starts and is running unloaded.
To load the gen-set
a) Power cut comes or
b) MCB ON/OFF is pressed
When power cut: MCB is opened, after Transfer Del elapses, GCB is closed.
When the mains recovers gen-set stays supplying island load. To transfer the load back to the healthly
mains, switch the controller to AUT Mode.
Hint:
The controller does not respond to GCB ON/OFF , STOP, START
The load is automatically transferred back to the mains when any gen-set shut down protection
activates.
Test on load
When binary input REM TEST ONLD is closed, the controller automatically (if TEST mode selected)
transfers load from the mains to the gen-set. Setpoint AutoMainsFail: ReturnFromTEST must be set to
MANUAL.
The setpoint ReturnFromTEST = AUTO
While TEST mode is selected, gen-set is running unloaded.
When power cut comes the controller opens MCB.
After Return break elapses, GCB is closed.
When the mains recovers:
a) After MainsReturn Del the controller opens the GCB
b) After Transfer Del delay MCB is closed.
c) The engine stays running
To stop the gen-set select other mode than TEST
Hint:
The controller does not respond to GCB ON/OFF , MCB ON/OFF , STOP, START Circuit breakers
timing
Relation between Mains fail and MCB and start of gen-set
MCB Opens On = MAINSFAIL:
Mains fail is detected as Mains <V, Mains >V, Mains V Unbal, Mains <Freq, Mains >Freq. After
detection MCB is opened.
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