BAF, BATT1F, BATT2F
The following table applies to power supply modules with two batteries if the BATT.INDIC
switch is set to the 1BATT position. It shows the faults indicated and lists how to remedy the
faults.
Nothing is indicated about the condition of any second battery that may be in use.
Table 3-9
BAF, BATT1F, BATT2F, BATT.INDIC LEDs on 1BATT
LED
BAF
LED
BATT1F
LED
BATT2F
Cause of fault
Remedy
H
H
D
Battery 1 empty or missing
No external backup voltage
available.
Insert new battery in compartment 1.
Press FMR button.
D
H
D
Battery 1 empty or missing
External backup voltage avail‐
able.
Insert new battery in compartment 1.
Press FMR button.
Battery stored too long.
External backup voltage avail‐
able.
Depassivate battery (see
Installation
Manual
)
H
D
D
Battery 1 OK.
No external backup voltage
available (short-circuit)
● Fault after plugging in a module:
Plugged-in module defective
● Fault after switching on: Remove
all modules and plug in
individually
D
D
D
Battery 1 OK.
External backup voltage avail‐
able.
-
D = LED is dark; H = LED lights up;
BAF, BATT1F, BATT2F
The following table applies to power supply modules with two batteries if the BATT.INDIC
switch is set to the 2BATT position. It shows the faults indicated and lists how to remedy the
faults.
Table 3-10
BAF, BATT1F, BATT2F, BATT.INDIC LEDs on 2BATT
LED
BAF
LED
BATT1F
LED
BATT2F
Cause of fault
Remedy
H
H
H
Both batteries are empty or
missing.
No external backup voltage
available
Insert new batteries in compart‐
ments 1 and 2 Press FMR button.
D
H
H
Both batteries are empty or
missing.
External backup voltage avail‐
able
Insert new batteries in compart‐
ments 1 and 2 Press FMR button.
Power supply modules
3.5 Fault/Error messages via LEDs
S7-400 Automation System Module Data
52
Reference Manual, Ausgabe 11/2016, A5E00850736-08