Siemens SIRIUS 3RW55 Manual page 181

Faults
Bypass overload
Phase control failure
Current measuring range
exceeded
Invalid / inconsistent firmware
present
Number of starting operations
exceeded
Error rotating field
Above threshold P
Below threshold P
Active power error limit shutoff
Test mode current flow
Overtemperature of electronic
components
Actuator disconnection
SIRIUS 3RW55 soft starter
Manual, 08/2018, A5E35630887002A/RS-AB/002
8.4 Faults and remedial actions of the 3RW55 soft starter
Cause
In bypass operation the current was too high.
Fault resetting is only possible after cooling
down.
1. Error appears without motor start:
– Motor incorrectly connected
– Inside-delta circuit incorrectly realized
– Ground fault
2. Error appears while motor is starting:
– Kick start voltage too high
– Breakaway pulse incorrectly set
For sensors: The measured value
•
exceeds the measuring range.
For actuators: The output value exceeds
•
a high limit value.
The firmware is incomplete and / or the
firmware expansions are incomplete or
incompatible.
The maximum number of starting operations
in the monitoring period has been exceeded.
The direction of rotation field is not correct.
The active power of the motor has exceeded
a limit.
The active power of the motor has fallen
below a limit.
Additional tripping in the event of an active
power fault limit overshoot or undershoot.
Current is flowing in the motor feeder even
though it is in test mode or in the test
position. Possible causes:
The main circuit is not interrupted in test
•
mode.
The temperature in the components has
exceeded the maximum limit.
The module has disconnected the actuator.
An additional diagnostic message will be
displayed to provide you with more detailed
information about the cause.
Messages and diagnostics
Remedy
Check motor.
•
Check dimensioning of the soft
•
starter.
Acknowledgment after cooling
•
down
1. Check and correct the wiring.
2. Adjust parameters or extend pause
time.
Check the interaction between the
•
module and the sensor or actuator.
Run a complete firmware update.
•
Check any occurring error
•
messages.
Check to see whether or not the
•
firmware update was aborted.
The next starting operation should take
place only after the interlock time has
expired.
-
Check the application driven by the
motor.
-
-
Check the ambient temperature or the
control cabinet cooling.
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