
Power supply modules
3.5 Fault/Error messages via LEDs
S7-400 Automation System Module Data
Reference Manual, Edition 09/2009, A5E00850736-06
59
3.5 Fault/Error messages via LEDs
Introduction
The power supply modules of the S7-400 indicate module faults and backup battery faults
via LEDs on the front plate.
Overview of the error messages of the power supply modules
Table 3- 6 Error messages of the power supply modules
Type of fault/error LED
Module error INTF
5 VDC
24 VDC
Power supplies with 1 backup battery:
BAF
BATTF
Backup battery fault
Power supplies with 2 backup battery:
BAF
BATT1F
BATT2F
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