InteliLite4 AMF20 Global Guide
101
Remote MAN (page 457)
Remote AUTO (page 457)
If the respective input is active the controller will change the mode to the respective position according to the
active input. If multiple inputs are active, the mode will be changed according to priorities of the inputs. The
priorities match the order in the list above. If all inputs are deactivated, the mode will return to the original
position given by the setpoint.
AMF Operating Modes
OFF mode – AMF
No starting of the Gen-set is possible .Controller stays in Not ready status and cannot be started in any way.
The MCB is closed permanently (MCB Opens On (page 283) = GENRUN) or is open / closed depending on
whether the mains is present or not (MCB Opens On (page 283) = MAINSFAIL). No AMF function will be
performed. The buttons MCB , GCB , Start and Stop including the appropriate binary inputs for
external buttons are not active.
IMPORTANT: When engine is running, it is not possible to switch Gen-set to OFF mode.
MAN mode – AMF
The engine can be started and stopped manually using the Start and Stop buttons (or the external
buttons wired to the appropriate binary inputs) in MAN mode. When the engine is running, GCB can be
closed. Also MCB can be closed and opened manually using the MCB button, regardless of whether the
mains is present or not. No auto start is performed.
Note: The controller provides interlock between GCB and MCB, it means it is never possible to close both CB
together.
AUTO mode – AMF
The controller does not respond to the buttons Start , Stop , MCB ON/OFF and GCB ON/OFF .
Engine start/stop request is evaluated from Mains failure/return.
Note: When the AMF function will start the engine than the engine will be running at least for the time which is
defined in Mains Return Delay (page 269) setpoint, even if the mains would return in the meantime.
TEST mode – AMF only
The Gen-set will be started when the controller is put to TEST mode and will remain running unloaded. If a
mains failure occurs, the MCB will be opened and after Transfer Delay (page 270) the GCB will be closed
and the Gen-set will supply the load. After the mains have recovered, the delay Mains Return Delay (page
269) will count down. If the time elapses and the mains is still OK, the controller will transfer the load back to
the mains after Transfer Delay (page 270) and the Gen-set will run unloaded again until the mode is
changed.
Remote test on load
When binary input is active, the controller automatically transfers load from the mains to the Gen-set. See LBI
REM TEST ON LOAD (PAGE 456).
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