Troubleshooting
11-5
FM 353 Stepper Drive Positioning Module
6ES7 353-1AH01-8BG0
Meaning of the status and error displays
The status and error displays are explained in the order in which they are arranged
on the FM 353.
Table 11-3 Status and error displays
Display
Meaning Explanations
SF (red)
LED-ON
Group errors This LED indicates an error condition in the FM 353.
Diagnostic interrupt (internal error, external error or external chan-
nel error)
To eliminate the error see Error List, Table 11-4.
5 V DC (green) Power supply
switched on
This LED indicates that the hardware is ready for operation.
If not illuminated, this may indicate one of the following condi-
tions:
S Your line voltage is not OK.
S Load current supply is faulty.
S Module is incorrectly connected.
S Your control circuit is configured incorrectly (sum of rated and
starting currents is too great), or
S The module is faulty.
DIAG (yellow)
LED-ON
LED-blinking
Diagnostics This LED indicates the various diagnostic conditions.
Diagnostic interrupt (external channel error).
To eliminate the error see Error List, Table 11-4.
If this LED blinks when the LED “SF” is simultaneously activated,
this indicates a system error. If this occurs, then please consult the
appropriate sales department. The exact circumstances which re-
sulted in the error are of major importance in this case.
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