Siemens SIRIUS 3RW52 - Faults and Remedial Actions of the 3 RW52 Soft Starter

Messages and diagnostics
9.4 Faults and remedial actions of the 3RW52 soft starter
SIRIUS 3RW52 Soft Starter
176 Equipment Manual, 04/2020, A5E35630451002A/RS-AE/005
9.4 Faults and remedial actions of the 3RW52 soft starter
Display of the faults
The 3RW52 soft starter signals faults by means of the following displays:
Ⴠ LED "ER" (red)
Ⴠ 3RW5 HMI Standard (accessory)
Ⴠ 3RW5 HMI High Feature (accessory)
Display of the faults on the 3RW5 HMI
Ⴠ 3RW5 HMI Standard: The display shows fault numbers that you can assign to the
respective fault on the basis of the following table.
Ⴠ 3RW5 HMI High Feature: Detailed information about faults and remedial actions appears
in plain text on the display.
Faults and remedial actions
Error
No.
1)
Error
Cause
Remedy
RESET MODE
Manual
2)
Remote
3)
Auto
4)
303 Bus error Fault in the fieldbus
communication.
You will find further
information in the manual for
the 3RW5 communication
module in question.
x Check the bus connection.
x Check the bus
parameters.
- - x
308 Switching element
defective
x Switching element
defective
x The fault is also
generated if the defective
switching element
(bypass or power
semiconductor) cannot
be accurately identified.
Check the switching elements
L1, L2, and L3 and replace
any that are defective.
- - -
309 Switching element
overload
Switching element
(switch contact, power
semiconductors) too hot.
x Check the ambient
conditions associated with
cooling. You may want to
consider lowering the
operating characteristics.
x Check the number of
switching operations.
x Acknowledgment after
cooling down
x x -