Parameter
Range
Default Notes
Voltage and
frequency OK
0 s to 1 h
0 s
If the busbar voltage and frequency are OK for this time in seconds, then the
busbar LED becomes steady green. The breaker is not allowed to close before
the busbar LED is steady green (that is, not flashing).
Minimum OK voltage 70 to 100 %
95 %
The voltage must be above this voltage (as a percent of nominal voltage) for the
breaker to start to synchronise and close.
Maximum OK voltage 100 to 120 % 105 %
The voltage must be below this voltage (as a percent of nominal voltage) for the
breaker to start to synchronise and close.
Minimum OK
frequency
70 to 100 %
98 %
The frequency must above this frequency (as a percent of nominal frequency) for
the breaker to start to synchronise and close.
Maximum OK
frequency
100 to 110 % 102 %
The frequency must below this frequency (as a percent of nominal frequency) for
the breaker to start to synchronise and close.
Blackout detection
Configure this parameter under
Configure > Parameters > [Busbar] > AC setup > Blackout detection
.
Parameter
Range
Default Notes
Blackout delay 0 s to 1 h 0 s
After detecting the blackout, the controller does not respond, unless the blackout is still
present after this time. All the
Blackout delay
timers in the section must run out before any
controller can allow a blackout close.
3.1.5 Voltage and frequency as digital outputs
For the [Source] and the [Busbar], you can configure digital outputs with functions for
Voltage and frequency OK
and
No voltage and
frequency
. These functions are based on the AC measurements and parameters, and can be useful for troubleshooting.
Outputs
Assign the function to a digital output under
Configure > Input/output
. Select a hardware module with a digital output, then select
the output to configure.
Function
I/O
Type
Details
[Source] > State > Voltage and
frequency OK
Digital output Continuous
Activated if the voltage and frequency from the source are within the
range specified in under
Configure > Parameters > [Source] > AC
setup > Voltage and frequency OK
.
[Source] > State > No voltage
and frequency
Digital output Continuous
Activated if the phase-to-phase voltage from the source is less than
10 % of the nominal voltage.
[Busbar] > State > Voltage and
frequency OK
Digital output Continuous
Activated if the voltage and frequency at the [Busbar] are within the
range specified in under
Configure > Parameters > [Busbar] > AC
setup > Voltage and frequency OK
.
[Source] > State > No voltage
and frequency
Digital output Continuous
Activated if the phase-to-phase voltage at the [Busbar] is less than
10 % of the nominal voltage.
3.1.6 4th current input configuration
Nominal current
Configure this parameter under
Configure > Parameters > Local > 4th current input > Nominal settings > Nominal settings # >
Current (I4)
, where # is 1 to 4.
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