Siemens SIRIUS 3RW55 Equipment Manual page 254

Messages and diagnostics
9.4 Errors and remedial actions of the 3RW55 and 3RW55 Failsafe soft starters
Error
Error process image
Invalid parameter value
No external start parameters received Necessary startup data for the device
Self-test error
Preset unequal actual configuration
Motor connection wrong
Missing load
Loss of phase L1
Loss of phase L2
Loss of phase L3
Overvoltage
Bypass defective
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Cause
The process image output (PIQ) con‐
tains invalid control bit combinations
(e.g. control bits for clockwise and
counter-clockwise rotation are set at
the same time).
The module is not or is incorrectly
parameterized or parameterization
changes are denied in current oper‐
ating mode.
are missing.
Unrecoverable error detected after
internal diagnostics (self-test, contac‐
tor contacts, switching element,
etc.).
Real and configured slot of module is
different.
The motor connection type was not
recognized or is different from config‐
uration.
No current flow is detected after the
motor feeder is switched on. Possible
causes:
• Main circuit interrupted (fuse, cir‐
cuit breaker)
• Motor contactor or contactor con‐
trol is defective
• No load
The main power monitoring detects a
phase failure.
The supply voltage is above the toler‐
ance limit.
• Bypass defective
• The error can also be generated
by successive, brief interruptions
of the control supply voltage.
Remedy
Check and correct the process image output
(PIQ).
• Correct and execute parameterization.
• Switch the operating mode and repeat pa‐
rameterization.
Check parameterization or startup data re‐
cords.
Switch off 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)).
• Replace the device.
• Ensure consistency between plugged and
configured module. Possibly the referenced
module has a wiring error.
• After the cause is eliminated, the error self-
acknowledges.
Ensure correct connection.
Acknowledgment once the cause has been rec‐
tified.
Acknowledgment once the cause has been rec‐
tified.
Change the power supply.
Switch off 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 bypasses for L1, L2 and L3 and re‐
place any that are defective.
SIRIUS 3RW55 and 3RW55 Failsafe Soft Starters
Equipment Manual, 02/2022, A5E35630887002A/RS-AF/006