Low Oil Pressure Alarm
IEEE 37.2 - 63 pressure switch
Active when the Oil Pressure falls
below the Low Oil Pressure Alarm
setting
Inactive when
• The set is stopped
• During starting sequence before
the safety delay time has
expired.
Low Oil Pressure Pre-Alarm
IEEE 37.2 - 63 pressure switch
Active when the Oil Pressure falls
below the Low Oil Pressure Pre-
Alarm setting
Inactive when
• The set is stopped
• During starting sequence before
the safety delay time has
expired.
Low Load Indicates that the stopping sequence is beginning due to low load levels.
(Load Demand Scheme)
Manual Button Pressed Active when the Manual button on the
front fascia is pressed
Inactive when the button is released
MPU open circuit
(Not applicable to 8860)
This output indicates that the module has detected an open circuit failure in
the Magnetic Pickup transducer circuit.
Main Config Selected Indicates that the main configuration has been selected
Mains Decoupling High Frequency This output indicates that the mains decoupling high frequency alarm has
been triggered.
Mains Decoupling High Voltage This output indicates that the mains decoupling high voltage alarm has been
triggered.
Mains Decoupling Low Frequency This output indicates that the mains decoupling low frequency alarm has been
triggered.
Mains Decoupling Low Voltage This output indicates that the mains decoupling low voltage alarm has been
triggered.
Mains ROCOF Indicates that the ROCOF protection (when in parallel with mains) has
triggered.
Mains Vector Shift Indicates that the Vector Shift protection (when in parallel with mains) has
triggered.
Maintenance Alarm 1,2,3 Due Indicates that the specified maintenance alarm is due
Manual Mode Active when the controller is in
MANUAL mode
Inactive in any other mode.
MSC Data Error Indicates bad data transfer in the MultiSet Comms (MSC) Link
MSC Failure Indicates that the number of sets on the MultiSet Comms (MSC) Link is lower
than it was previously.
MSC ID Error Indicates that two or more modules connected on MultiSet Comms (MSC) Link
share the same MSC ID.
MSC Too Few Sets Indicates that the number of sets connected on the MultiSet Comms (MSC)
Link is lower than the Minimum sets required setting.
Mute / Lamp test button pressed This output indicates that the alarm mute / Lamp test push button is being
operated. Once the button is released, the output will become inactive.
Negative Phase Sequence Alarm
IEEE 37.2 - 46 phase balance current
relay
Active when the Negative Phase Sequence alarm is active
No Loading Command This output indicates that the module is not calling for the
generator load switch to be closed. Should the module close the generator
load switch, this output will become inactive.
Oil Pressure Sender Open Circuit
Active when the Oil Pressure Sensor is detected as being open circuit.
Oil Pressure Switch Active when a low oil pressure alarm is triggered by a low oil pressure switch
Open Generator Button Pressed This output indicates that the Open Generator push button is being operated.
Once the button is released, the output will become inactive.
Open Gen Output
IEEE 37.2 – 52 ac circuit breaker
Used to control the load switching
device. Whenever the DSE module
selects the generator to be off load
this control source will be active.
Inactive whenever the generator is
required to be on load
Open Gen Output Pulse
IEEE 37.2 – 52 ac circuit breaker
Used to control the load switching device. Whenever the DSE module selects
the generator to be off load this control source will be active for the duration of
the Breaker Open Pulse timer, after which it will become inactive again.
Out of Sync
Indicates that the out of sync alarm has been triggered.
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