Digital Input A to L
NOTE: Due to module configuration the alarm message
that appears on the display may be different. For further details
of module configuration, refer to DSE Publication: 057-257
DSE8660 MKII Configuration Suite PC Software Manual.
The module detected that a digital input configured to create a fault
condition became active and the appropriate LCD message is
displayed.
Exp. Unit Failure
The module detected that communications to one of the DSENet
expansion modules had been lost.
Fail To Sync
If the module cannot synchronise within the time allowed by the
Synchronising timer a warning is initiated. The LCD indicates Failed
To Sync.
Insufficient Capacity
If the generator bus reaches full load when they are in parallel with
the mains. The LCD indicates Insufficient Capacity.
Mains Asymmetry High
The module detected the mains voltage asymmetry had risen above
the configurable Trip level for the configured delay timer.
Mains Decoupling
High Frequency
If the module detects the mains frequency increase when in parallel
with the generator(s) more then the configure value. The LCD
indicates Mains Decoupling High Frequency.
Mains Decoupling
High Voltage
If the module detects the mains voltage increase when in parallel
with the generator(s) more then the configure value. The LCD
indicates Mains Decoupling High Voltage.
Mains Decoupling
Low Frequency
If the module detects the mains frequency decreases when in
parallel with the generator(s) below the configure value. The LCD
indicates Mains Decoupling Low Frequency.
Mains Decoupling
Low Voltage
If the module detects the mains voltage decreases when in parallel
with the generator(s) below the configure value. The LCD indicates
Mains Decoupling Low Voltage.
Mains Decoupling ROCOF
If the module detects the mains frequency changing when in parallel
with the generator(s) more then the configure value in a time frame.
The LCD indicates Mains Decoupling ROCOF.
Mains Decoupling
Vector Shift
If the module detects the mains phase angle changing when in
parallel with the generator(s) more then the configure value in a time
frame. The LCD indicates Mains Decoupling Vector Shift.
Mains Failed To Close
If the mains breaker fails to close, a warning is initiated. The LCD
indicates Mains Failed To Close.
Mains Failed To Open
If the mains breaker fails to open, a warning is initiated. The LCD
indicates Mains Failed To Open.
Mains Over Negative
Sequence
The module detected the mains voltage negative sequence had
risen above the configurable Trip level for the configured delay timer.
Mains Over Zero Sequence
The module detected the mains voltage zero sequence had risen
above the configurable Trip level for the configured delay timer.
Mains Reverse Power
IEEE C37.2 – 32 Directional Power
Relay
If the module detects that the generator bus is exporting more than
the configured limit, the LCD indicates Mains Reverse Power
Mains Under Positive
Sequence
The module detected the mains voltage positive sequence had fallen
below the configurable Trip level for the configured delay timer.
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