Protections
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7.3 WARNINGS
Warnings are non-critical alarm conditions and do not affect the operation of the generator system,
they serve to draw the operators attention to an undesirable condition.
By default, warning alarms are self-resetting when the fault condition is removed. However enabling
‘all warnings are latched’ will cause warning alarms to latch until reset manually. This is enabled using
the DSE Configuration Suite in conjunction with a compatible PC.
Display Reason
Auxiliary Inputs
If an auxiliary input has been configured as a warning the appropriate
LCD message will be displayed and the COMMON ALARM LED will
illuminate.
Charge Failure
The auxiliary charge alternator voltage is low as measured from the
W/L terminal.
Battery Under Voltage
The DC supply has fallen below the low volts setting level for the
duration of the low battery volts timer
Battery Over Voltage
The DC supply has risen above the high volts setting level for the
duration of the high battery volts timer
Fail To Stop
The module has detected a condition that indicates that the engine is
running when it has been instructed to stop.
NOTE:- ‘Fail to Stop’ could indicate a faulty oil pressure
sensor or switch - If the engine is at rest check oil sensor wiring
and configuration.
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.
Low Fuel Level
The level detected by the fuel level sensor is below the low fuel level
setting.
CAN ECU Error
The engine ECU has detected a warning alarm and has informed the
DSE module of this situation. The exact error is also indicated on the
module’s display.
Kw Overload
The measured Total kW is above the setting of the kW overload
warning alarm
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.
Negative Phase
Sequence
Indicates ‘out of balance’ current loading of the generator.
Sometimes also called Negative Sequence Current or Symmetry Fault
Maintenance Due
Indicates that the maintenance alarm has triggered. A visit is required
by the Generator service company.
Loading Voltage Not
Reached
Indicates that the generator voltage is not above the configured loading
voltage. The generator will not take load when the alarm is present after
the safety timer.
Loading Frequency Not
Reached
Indicates that the generator frequency is not above the configured
loading frequency. The generator will not take load when the alarm is
present after the safety timer.
Display Reason
Protections Disabled
Shutdown and electrical trip alarms can be disabled by user
configuration. In this case, Protections Disabled will appear on the
module display; The alarm text is displayed but the engine will continue
to run. This is ‘logged’ by the module to allow DSE Technical Staff to
check if the protections have been disabled on the module at any time.
Low Oil Pressure
The module detects that the engine oil pressure has fallen below the
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