Manual
HM1016ER1
Control and Operation Instruction
Harsen
®
Page 10/54
CAUTION:
If Fail to Start occurs, operator must check the whole Genset system to
find out failure reason, only after clearing the failure can press “STOP /
RESET” button to relieve fault lock out status, and restart the Genset
.
Mains return and generator shutdown sequence:
When Mains resumes to normal, Mains Normal LED illuminates, the Mains ON delay timer is activated,
GCB close/open relay is de-energised after it times out, MCB Close/open relay is energised, transfer
switch switches on Mains, the Mains Aux. Switch’s contact feeds back the signal to a configurable input
on our controller, MCB closed LED illuminates.
At the same time as the MCB close/open relay is energised, the timer for cool down is activated, when it
times out, the fuel relay de-energises, generator stops and recovers to its standby status.
NOTE:
If you do not configure an input as Mains Aux. Switch Closed, then the
MCB closed LED illuminates but is only an indication that the MCB
close/open relay should have been closed.
Stop Failure: When cool down times out, the fuel relay opens and the timer for Stop delay begins. If the
controller detects that the voltage of the generator or oil pressure or the speed of engine is greater than
the cutout values or LOP switch is open, when it times out, the failure LED illuminates and the LCD
displays Fail to stop.
NOTE:
After stop failure, the controller will not energise the crank relay output if
the failure has not been removed and the controller reset.
Generator auto start conditions:
When the controller is in “AUTO” mode, it will auto start under the following 3 conditions:
Mails voltage failure
Remote start signal is active
MCB failure
If you do not define one of the configurable inputs as Remote Start Signal, when the Mains fails, the
controller will automatically initiate the start sequence.
If one of the configurable inputs has been defined as Remote Start Signal, when remote start signal is
active and Mains fails, the controller will initiate start sequence. However if there is a Mains failure but
remote start input is not active the controller will not initiate start sequence, but the Mains close/open relay
will open.
If Genset has started since Mains fail to load, when failure is removed and controller unlocked by pressing reset button, GCB
close/open relay opens, MCB close/open relay closes, transfer switch switches the load to Mains.
