Protections
85
Display Reason
Generator Over Frequency
The generator output frequency has risen above the preset
level
Generator Under Frequency
The generator output frequency has fallen below the preset
level
Generator Over Voltage
The generator output voltage has risen above the preset level
Generator Under Voltage
The generator output voltage has fallen below the preset level
Oil Pressure Sensor Open
Circuit
The oil pressure sensor is detected as not being present (open
circuit)
Auxiliary Inputs
An active auxiliary input configured as a shutdown will cause
the engine to shut down. The display shows the text as
configured by the user.
Loss Of Speed Signal
The speed signal from the magnetic pickup is not being
received by the DSE controller.
ECU Data Fail
The module is configured for CAN operation and does not
detect data on the engine Can datalink, the engine shuts down.
ECU Shutdown
The engine ECU has detected a shutdown 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 shutdown 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.
Generator High Current
A High Current condition has continued for an excess period,
then the alarm escalates to either a shutdown or electrical trip
condition (depending upon module configuration). For further
details of the high current alarm, please see High Current
Shutdown / Electrical Trip Alarm.
Loading Voltage Not Reached
Indicates that the generator voltage is not above the configured
loading voltage after the safety timer. The generator will
shutdown.
Loading Frequency Not Reached
Indicates that the generator frequency is not above the
configured loading frequency after the safety timer. The
generator will shutdown.
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 will be 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.
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