Diagnostics and Messages
SIRIUS 3RW44 manual
GWA 4NEB 535 2195-02 DS 02
7-3
Phase failure L2 x Phase L2 missing or it fails while motor is running or it drops off.
Remedy: connect L2 or rectify cause of voltage drop.
Or: the motor that is connected is too small and the error message occurs immediately
after switching over to bridging mode.
Remedy: adjust rated operating current for connected motor or set it to minimum (if motor
current is lower than 10 % of the configured I
e, the motor cannot be operated with this
starter).
Phase failure L3 x Phase L3 missing or it fails while motor is running or it drops off.
Remedy: connect L3 or rectify cause of voltage drop.
Or: the motor that is connected is too small and the error message occurs immediately
after switching over to bridging mode.
Remedy: adjust rated operating current for connected motor or set it to minimum (if motor
current is lower than 10 % of the configured I
e, the motor cannot be operated with this
starter).
Missing load phase T1 x Motor phase T1 is not connected.
Remedy: connect motor properly.
Missing load phase T2 x Motor phase T2 is not connected.
Remedy: connect motor properly.
Missing load phase T3 x Motor phase T3 is not connected.
Remedy: connect motor properly.
Supply voltage under 75 % x Control supply voltage is below 75 % of the required nominal voltage for longer than
100 ms (voltage failure, voltage drop, wrong control supply voltage).
Remedy: check control supply voltage.
Supply voltage under 85 % x Control supply voltage is below 85 % of the required nominal voltage for longer than 2 ms
(voltage failure, voltage drop).
Remedy: check control supply voltage.
Supply voltage above 110 % x Control supply voltage is below 110 % of the required nominal voltage for longer than 2 ms
(voltage failure, voltage drop, wrong control supply voltage).
Remedy: check control supply voltage.
Current asymmetry exceeded x x Phase currents are asymmetric (asymmetric load). Message is output when the asymmetry
is greater than the configured limit (parameter: current asymmetry limit value).
Remedy: check load or change parameter value.
Thermal motor model overload x x x The thermal motor model has tripped. After an overload trip, there will be no restart until
the pre-charge time has elapsed.
Remedy for unwanted tripping:
- check whether the motor rated operating current I
e
is not adjusted properly or
- change CLASS setting or
- reduce switching frequency or
- deactivate motor protection (CLASS OFF)
Prewarning limit motor heat build-up x Motor heat build-up is greater than the specified value for the "Prewarning limit motor heat
build-up" parameter. The thermal motor model approaches an overload trip according to
the selected value.
Remaining time for tripping undershot x Time for overload tripping of the thermal motor model is shorter than the specified value for
the "Prewarning limit remaining time for tripping" parameter.
Line overvoltage x Applied main voltage is not suitable for the device or longer voltage peaks occur.
Remedy: apply correct voltage.
Current measuring range exceeded x A very high current has occurred (beyond the measuring range of the current transformers
integrated in the soft starter). This may happen in the case of: direct on-line starting,
breakaway pulse or combined braking.
Remedy: If the voltage ramp starting mode is selected, extend the set ramp time or lower
the breakaway voltage or the braking torque. The soft starter is possibly too small for the
motor.
Message
Warning
Error without restart
Error with restart
Cause / Remedy
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