HGM1780
Automatic
Genset Controller
ISSUE 2013-04-03
Version1.7
Page 12 of 24
HGM1780 Automatic Genset Controller
5. PROTECTION
1)
Low Oil Pressure:
detection begins after safety delay; if low oil pressure lasts for
2s, shutdown is initiated.
2)
High Temperature:
detection begins after safety delay; if high temperature lasts
for 2s, shutdown is initiated.
3)
Low Fuel Level:
if fuel level stays below the pre-set level for 10 seconds, low fuel
level warning signal is sent. Only warning and not shutdown.
4)
Over Speed:
detection begins after start; When speed over the preset for 2s,
shutdown is initiated.
5)
Under Speed:
detection begins after idle delay; if under speed lasts for 15s,
shutdown is initiated.
6)
Fail to Start:
if after a pre-set number of crank attempts, the gen-set has not
started, shutdown is initiated.
7)
Fail to Stop:
if the generator has not stopped after stop delay, fail to stop warning
is initiated, without latching.
8)
High Battery Voltage:
if battery voltage stays above the pre-set value for 20
seconds, high battery voltage warning signal is sent. Only warning and not
shutdown.
9)
Low Battery Voltage:
if battery voltage stays below the pre-set value for 20
seconds, low battery voltage warning signal is sent. Only warning and not
shutdown.
10)
Emergency Shutdown:
if emergency shutdown input is activated, ETS output is
immediately energized while fuel, preheat and crank signals are deactivated and
emergency shutdown alarm is initiated.
11)
Generator Over Voltage:
if it is detected that voltage is above the pre-set level for
5 seconds, generator over voltage signal is sent and shutdown alarm is initiated.
12)
Generator Under voltage:
if it is detected that voltage is below the pre-set level
for 5 seconds, generator under voltage signal is sent and shutdown alarm is
initiated.
13)
Load Over Current:
if load current stays above the pre-set value for a pre-set
delay time, the controller will initiate over current alarm signal and
A
indicator will
start flashing.
14)
Common Alarm:
in case of over speed, under speed, high temperature, low oil
pressure, emergency shutdown, fail to start and fail to stop alarms, high battery
voltage, low battery voltage, load over current or common alarm indicator flashing
and common alarm output is activated
