Siemens SIRIUS 3RW55 - Page 255

Error Cause Remedy
Bypass protective shuto󹪜 In bypass operation the current was
too high. Fault resetting is only possi‐
ble after cooling down.
• Check motor.
• Check dimensioning of the soft starter.
• Acknowledgment after cooling down. The
acknowledgment depends on the "Re‐
sponse to overload switching element" pa‐
rameter that has been set.
Switching element L1 failed Switching element defective Switch o󹪜 the power supply (control supply
voltage) for at least 5 seconds and switch it on
again. If the fault is still present proceed as fol‐
lows:
• Please contact Technical Support (Support
Request (Page 11)).
• Check the switching elements for L1, L2,
and L3 and replace any that are defective.
Switching element L2 failed
Switching element L3 failed
Phase control failure
1. Error appears without motor
start:
– Motor incorrectly connected
– Inside-delta circuit incorrectly
realized
– Ground fault
2. Error appears while motor is start‐
ing:
– Kick start voltage too high
– Breakaway pulse incorrectly
set
1. Check and correct the wiring.
2. Adjust parameters or extend pause time.
Current measuring range exceeded
• With sensors: The measured val‐
ue has exceeded the range limits.
• With actuators: The output value
has exceeded an upper limit.
Check the interaction between the module and
the sensor or actuator.
Device error Unrecoverable error detected after
internal diagnostics (self-test, contac‐
tor contacts, switching element,
etc.).
Switch o󹪜 the power supply (control supply
voltage) for at least 5 seconds and switch it on
again. If the device error is still present proceed
as follows:
• Please contact Technical Support (Support
Request (Page 11)).
• Replace the device.
FW update faulty The 󹪝rmware is incomplete and / or
the 󹪝rmware expansions are incom‐
plete or incompatible.
• Run a complete 󹪝rmware update.
• Check any occurring error messages.
• Check to see whether or not the 󹪝rmware
update was aborted.
Switching frequency time not kept The maximum number of starting op‐
erations in the monitoring period has
been exceeded.
The next starting operation should take place
only after the interlock time has expired.
Main power rotation faulty The direction of rotation 󹪝eld is not
correct.
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Messages and diagnostics
9.4 Errors and remedial actions of the 3RW55 and 3RW55 Failsafe soft starters
SIRIUS 3RW55 and 3RW55 Failsafe Soft Starters
Equipment Manual, 02/2022, A5E35630887002A/RS-AF/006 255