Manual
HM1016ER1
Control and Operation Instruction
Harsen
®
Page 11/54
NOTE:
If no configurable input was defined as Main Aux. Switch closed, the
alarm for Mains fail to load is inactive.
4.3 MAN control Sequence:
The controller is running in “MANUAL” mode.
Mains is normal, Mains is on load:
When Mains is normal means that both voltage and frequency of Mains are within the range of preset
value, the Mains Normal LED illuminates, the MCB close/open relay will not close automatically.
Press the “C/O” button of Mains to close the Mains switch manually, then Mains is on load, the Mains Aux.
Switch’s contact feeds back the signal to a configurable input on our controller, MCB closed LED
illuminates. Press the “C/O” button of Mains again to open the Mains switch manually, the Mains is off
load, the MCB closed LED is turned off at the same time.
If you press the “C/O” button of Mains when Gen is on load, the GCB close/open relay will be opened first,
then Gen is off load, the MCB close/open relay closes later, Mains is on load.
NOTE:
When the controller is running in “MANUAL” mode, Mains must be
normal, or the “C/O” button of Mains will be disabled.
Generator starting sequence:
Pressing “START” button the fuel relay energises, and operates the fuel solenoid of engine, After
300ms delay, the start relay output is energised, the start motor engages and begins to crank, when the
engine speed reaches the crank cutout RPM, the start relay output is de-energised and the safety-on
delay starts. When the safety-on times out, if the controller detects that the parameters of the Genset
such as voltage, frequency, oil pressure, coolant temperature are normal, and no other failure is
detected this indicates the Genset has successfully started and running normally. The LCD displays the
Genset Measurement Parameters.
After both voltage and frequency of generator respectively reached the loading value, the Gen. Normal
LED illuminates, the GCB close/open relay will not be closed automatically.
Press the “C/O” button of Gen to close the Gen switch manually, Gen is on load, the Gen Aux. Switch’s
contact feeds back the signal to a configurable input on our controller, GCB closed LED illuminates.
Press the “C/O” button of Gen again to open the Gen switch manually, Gen is off load, the GCB closed
LED is turned off at the same time.
If you press the “C/O” button of Gen when Mains is on load, the MCB close/open relay will be opened first,
then Mains is off load, the GCB close/open relay closes later, Gen is on load.
