Manual
HM1016ER1
Pre-alarm and Shutdown Alarm
Harsen
®
Page 18/54
GEN. OVER VOLT: If controller detects that any phase voltage of generator
has exceeded the “GEN-V over preALM” after the safety-on timer has
expired, the pre-alarm LED illuminates and the buzzer sounds, LCD
displays
For example, “rating voltage” preset as: 220V, “GEN-V over preALM”
preset as: 115%, when the generator output voltage exceeds this value,
LCD flashing high value icon for corresponding phase.
GEN. UNDER VOLT: If controller detects that any phase voltage of
generator has fallen below the “GEN-V under preALM” after the safety-on
timer has expired, the pre-alarm LED illuminates and the buzzer sounds,
LCD displays:
For example, “rating voltage” preset as: 220V, “GEN-V under preALM”
preset as: 90%, when the generator output voltage falls below this value,
LCD flashing low value icon for corresponding phase.
OVERLOAD: If controller detects that the active power of generator has
exceeded the “KW Overload preALM” after the safety-on timer has expired,
the pre-alarm LED illuminates and the buzzer sounds, LCD displays:
For example, “rating active power” preset as: 300KW, “KW Overload
preALM” preset as: 90%, when the generator active power exceeds this
value, LCD flashing icon for corresponding high value.
D-INPUT: If one of Configurable D-inputs has been configured as pre-alarm,
when D-input is active, the pre-alarm LED illuminates and the buzzer
sounds, LCD flashing D-Input icon.
GCB FAILURE: If GCB close/open relay is closed, the timer for GCB
closing is activated, when it times out, if the controller does not receive
the feed back signal from Gen Aux. Switch’s contact, then Gen fail to
load alarm is activated. The GCB closed LED flashes and the buzzer
sounds.
MCB FAILURE: If MCB close/open relay is closed, the timer for MCB
closing is activated, when it times out, if the controller does not receive
the feed back signal from Mains Aux. Switch’s contact, then Mains fail to
load alarm is activated. The MCB closed LED flashes and the buzzer
sounds.
NOTE:
Controller continuously detects battery voltage during standby period and Battery
Under/Over Voltage Pre-alarms are active.
Battery under Voltage pre-alarm is inactive during cranking.
CAUTION:
Under the period of safety-on delay, some pre-alarms (e.g.: under speed,
under voltage, low oil pressure) are inactive, the safety-on time must be
carefully and properly set to make Genset have full protection.
NOTE:
To make the pre-alarm for GCB/MCB FAILURE active, please configure
one of the configurable inputs as Gen/Mains Aux. Switch Closed and
connects the switch’s N.O. Aux. contact to this port. After pre-alarm
occurred, the controller is locked out, you must press reset button to
remove.
