Protections
93
8.5 SHUTDOWNS
NOTE: Shutdown and Electrical Trip alarms can be disabled by user configuration. See
the section entitled Protections Disabled elsewhere in this document.
Shutdowns are latching alarms and stop the Generator. Clear the alarm and remove the fault then
press Stop/Reset
to reset the module.
Example
Alarm 1/1
Oil Pressure Low
Shutdown
NOTE: The alarm condition must be rectified before a reset will take place. If the alarm
condition remains, it will not be possible to reset the unit (The exception to this is the Low Oil
Pressure alarm and similar ‘active from safety on’ alarms, as the oil pressure will be low with
the engine at rest).
Display Reason
EARTH FAULT
The measured Earth Fault Current has been in excess of the
earth fault trip and has surpassed the IDMT curve of the Earth
Fault alarm.
FAIL TO START
The engine has not fired after the preset number of start attempts
EMERGENCY STOP
The emergency stop button has been depressed. This is a
failsafe (normally closed to battery positive) input and will
immediately stop the set should the signal be removed.
Removal of the battery positive supply from the emergency stop
input will also remove DC supply from the Fuel and Start outputs
of the controller.
NOTE: The Emergency Stop Positive signal must be
present otherwise the unit will shutdown.
LOW OIL PRESSURE
The engine oil pressure has fallen below the low oil pressure trip
setting level after the Safety On timer has expired.
ENGINE HIGH TEMPERATURE
The engine coolant temperature has exceeded the high engine
temperature trip setting level after the Safety On timer has
expired.
FUEL USAGE
Indicates the amount of fuel measured by the fuel level sensor is
in excess of the Fuel Usage alarm settings. This often indicates a
fuel leak or potential fuel theft.
PHASE ROTATION
The phase rotation is measured as being different to the
configured direction.
OVERSPEED
The engine speed has exceeded the pre-set trip
NOTE: During the start-up sequence, the overspeed trip
logic can be configured to allow an extra trip level margin.
This is used to prevent nuisance tripping on start-up - Refer
to the 8600 series configuration software manual under
heading ‘Overspeed Overshoot’ for details.
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