7.15.9 Voltage imbalance protection
This protection detects voltage imbalance. Normally there
is the same voltage in all three phases. If the voltage is
different in the phases, the engine can run bumpy.
Check the main voltage and restart the motor.
Voltage imbalance protection is configured with the
following parameters:
Parameter Description Setting range Default value
15.09 Voltage imb level Sets the Voltage imbalance trip
level.
1 ... 100 % 10 %
15.10 Voltage imb out Specifies the Event groups this
protection belongs to.
Eventgroup 0 ... 6 0000010
15.11 Voltage imb op Sets the operation of this protection. Off, Stop manual,
Stop auto, Indication.
Off
7.15.10 Phase reversal protection
This protection detects if if the phases are connected
incorrectly.
The order in which the phases are connected to the in-
stream power has no effect on the softstarter. But it may
be relevant to the component which is connected to the
softstarter. An engine can for example run in the wrong
direction if the phases are connected incorrectly. This
protection detects if the phases are connected in the
wrong order and then prevents the engine from starting.
Check the phase sequence on the line side to L1-L2-L3.
Phase reversal protection is configured with the
following parameters:
Parameter Description Setting range Default value
16.01 Phase rev out Specifies the Event groups this
protection belongs to.
Eventgroup 0 ... 6 0000010
16.02 Phase rev operation Sets the operation of this protection. Off, Stop manual,
Stop auto, Indication.
Off
7.15.11 Frequence range protection
TBD
Frequnce range protection is configured with the
following parameters:
Parameter Description Setting range Default value
16.03 Freq range lower trip lvl Sets the lower trip level for the
frequency.
40 ...72 Hz 45 Hz
16.04 Freq range upper trip lvl Sets the upper trip level for the
frequency.
40 ...72 Hz 60 Hz
16.05 Freq range trip time Sets the time that the frequency has
to be outside the trip range to trip.
0 ... 60 s 1 s
16.06 Freq range out Specifies the Event groups this
protection belongs to.
Eventgroup 0 ... 6 2
16.07 Freq range op Sets the operation of this protection. Off, Stop manual,
Stop auto, Indication.
Off
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