Siemens Simatic S7-400 - Manual (Page 96)

Power Supply Modules
3-16
S7-400, M7-400 Programmable Controllers Module Specifications
A5E00069467-07
BAF, BATTF
The following table applies to power supply modules with one battery if the BATT
INDIC switch is in the BATT position. It shows the faults indicated and lists how to
remedy the faults.
Table 3-9 BAF, BATTF; BATT INDIC LEDs on BATT
LED Cause of Fault Remedy
BAF BATT
F
H H Battery empty or missing
No backup voltage available Insert new battery.
Press FMR momentary-contact
pushbutton
D H Battery empty or missing Insert new battery.
Press FMR momentary-contact
pushbutton
Battery has been stored for
too long Depassivate battery
(see Installation Manual Chapter 7)
too long (see Installation Manual, Chapter 7)
H D Battery in order
No 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 Battery in order –
D = LED is dark; L = LED lights up;