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8.3
Warnings and remedial actions of the 3RW50 soft starter
Display of the warnings
The 3RW50 soft starter signals warnings by means of the following displays:
● LED "MT" (yellow)
● 3RW5 HMI High Feature (accessories)
Display of the warnings on the 3RW5 HMI High Feature
Detailed information about warnings and remedial actions appears in plain text on the
display of the 3RW5 HMI High Feature.
Warnings and remedial measures
Warning
Connection abort in manual mode
Switching element overload
Therm. motor model overload
Internal fan fault
SIRIUS 3RW50 soft starter
Manual, 09/2019, A5E35628455002A/RS-AA/001
8.3 Warnings and remedial actions of the 3RW50 soft starter
Cause
Connection to a local control
station (e.g. device HMI) has been
interrupted.
Switching element (switch contact,
power semiconductors) too hot.
The motor feeder is overloaded.
•
The motor temperature has
•
exceeded a limit.
Internal fan is dirty
•
(not rotating freely).
Connecting cable has fallen off
•
or is defective.
Internal fan faulty
•
Messages and diagnosis
Remedy
Check the connection between the HMI and
•
the device.
Check the connection between the PC and
•
the local device interface.
Check the ambient conditions associated
•
with cooling. You may want to consider
lowering the operating characteristics.
Check the number of switching operations.
•
Check the motor and the applications driven
•
by the motor.
You can switch on the motor again after the
•
cooling-off period has expired or after
deleting the thermal motor model.
Check the function of the fan.
•
Clean the fan.
•
Check the wiring.
•
Replace the fan.
•
167
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