Warnings And Remedial Measures Of The 3Rw55 Soft Starter - Siemens SIRIUS 3RW55 Manual

8.3

Warnings and remedial measures of the 3RW55 soft starter

Warning
Generator operation
Connection break in manual mode
Temperature sensor overload
Temperature sensor wire break
Temperature sensor short-circuit
Module slot wrong or configuration
faulty
Switching element overload
Time reserve before tripping
underrun
Therm. motor model overload
Above threshold I
Below threshold I
SIRIUS 3RW55 soft starter
Manual, 08/2018, A5E35630887002A/RS-AB/002
8.3 Warnings and remedial measures of the 3RW55 soft starter
Cause
The motor is in ramp-down mode. The
motor connection cables may be
energized.
Connection to operator device (e.g.
3RW5 HMI) is interrupted.
The temperature of the motor is too high.
A wire break has occurred in the sensor
line of the temperature sensor.
A short-circuit has occurred in the sensor
line of the temperature sensor.
Real and configured slot of module is
different.
Switching element (switch contact, power
semiconductors) too hot.
The time to overload trip of the thermal
motor model is shorter than the
configured time for the tripping reserve.
The motor feeder is overloaded.
•
The motor temperature has exceeded
•
a limit.
The current has exceeded a limit.
The current has undershot a limit.
Messages and diagnostics
Remedy
Parameterize the ramp-down mode to
minimize or avoid the generator
operation.
Check the communication between
•
the 3RW5 HMI and the device.
Check the connection between PC
•
and the local device interface.
Check the motor and the application
•
that is driven by the motor.
After triggering, the motor can only
•
be switched on again if the
temperature has reached the
release position of the temperature
sensor.
Check the sensor line and the
temperature sensor.
Ensure consistency between plugged
and configured module position or or
possibly the referenced module has a
wiring fault.
Check the ambient conditions
•
associated with cooling. You may
want to consider lowering the
operating characteristics.
Check the number of switching
•
operations.
Let the motor cool down.
•
For heavy starting and settings for
•
tripping CLASS 20, deactivate this
monitoring.
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 application driven by the
motor.
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