Manual
HM1016ER1
Control and Operation Instruction
Harsen
®
Page 9/54
NOTE:
The start motor will power off while cranking if there are one of the
following conditions occur:
A. The AC generator’s frequency reaches the preset value (configurable
cranking cutout value);
B. The AC Engine speed reaches crank cutout value;
C. Generator’s voltage reaches the crank cutout value (optional);
D. Charger voltage reaches crank cutout value (optional);
E. Cutout P-delay time’s up (optional);
F. Cranking time’s up.
Controller can not implement crank procedure in one of following
conditions:
A. The AC generator’s frequency reaches the preset value (configurable
cranking cutout value);
B. The AC Engine speed reaches crank cutout value;
C. Generator’s voltage reaches the crank cutout value (optional);
D. LOP switch is opened or oil pressure is higher than crank cutout
value (optional).
CAUTION:
If magnetic pickup is not used, to avoid damage to the start motor please
make sure the generator’s voltage is higher than the measurable value of
controller while cranking, since the crank cutout signal is sensed from the
generator voltage and frequency.
NOTE:
Above control procedure, assumes that one of configurable inputs has
been configured as Gen Aux. Switch Closed and connects the switch’s
N.O. Aux. contact signal to this port. If you do not configure an input as
Gen Aux. Switch Closed, then the GCB closed LED illuminates is only
an indication that the GCB close/open relay should have been closed.
If you have selected idle function, the idle relay will be closed at the same time as the crank relay is
closed, the idle timer will begin counting down after successful crank, when it times out, the idle relay
opens, other procedure is the same as above.
NOTE:
Controller will not detect under voltage, under frequency, under speed, and
charge failure during idle period.
Repeat Crank: During the crank period, if the engine can not ignite controller will not output start signal
during crank rest. Once crank rest timer times out the start relay energises once again and will attempt to
start engine again. The above procedure will be repeated until engine successfully ignites or reaches
the preset number of crank attempt.
If any shutdown alarm occurs during crank, controller will stop cranking immediately, and the Genset only can be
restarted after clearing the failure and reset.
Start Failure: When the procedure above repeats again and again and reaches the preset number of
crank attempt, the crank relay output is then de-engised. The failure LED illuminates and the LCD
displays Fail to Start.
