7.15.4 Current underload protection
The motor current has fallen below the settable value.
The voltage to the softstarter is too low. The protection
measures voltage and checks if the voltage is too low, if it
is too low, the softstarter will trip.
This protection is only operational in the Top of ramp
state.
Check that the motor current parameter (Ie) is set
correctly.
Current underload protection is configured with the
following parameters:
Parameter Description Setting range Default value
14.01 Curr underload level Sets the Current underload trip
level.
0.3 ... 0.9 x I
e
0.3 x I
e
14.02 Curr underload trip time Sets the time that the current
has to be below the trip level to
trip.
0 ... 10 s 1 s
14.03 Curr underload delay time Sets the time after Top of ramp
that the protection is enabled.
0 ... 30 s 10 s
14.04 Curr underload out Specifies the Event groups this
protection belongs to.
Eventgroup 0 ... 6 2
14.05 Curr underload op Sets the operation of this
protection.
Off, Stop manual,
Stop auto, Indication
Off
7.15.5 Power factor underload protection
The power factor has fallen below the normal level.
The Power factor underload protection can be used to
supervise the load of the motor. If the load decreases the
power factor will decrease as well.
This protection is only operational in the Top of ramp
state.
Power factor underload protection is configured with
the following parameters:
Parameter Description Setting range Default value
14.06 Pwr factor underload level Sets the Power factor
underload trip level.
0.0 ... 1.0 0.7
14.07 Pwr factor underload trip time Sets the time that the Power
factor has to be below the
trip level to trip.
0 ... 10 s 1 s
14.08 Pwr factor underload delay time Sets the time after Top of
ramp that the protection is
enabled.
0 ... 30 s 10 s
14.09 Pwr factor underload out Specifies the Event groups
this protection belongs to.
Eventgroup 0 ... 6 2
14.10 Pwr factor underload op Sets the operation of this
protection.
Off, Stop manual,
Stop auto, Indication.
Off
7
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