Siemens S5-135U/155U System Manual page 231

Submodules with
Battery Backup
Current consumption
(at 5 V)
Backup current
Backup voltage/
UCMOS
Submodule battery
Backup time
Access time t
System Manual
C79000-G8576-C199-06
CPUs, Memory Cards, Memory Submodules, Interface Submodules
140 mA max.
13 A typ.
2.7 V to 3.6 V
Lithium button cell 3 V/200 mAh Type CR 2430
(LF-1/2W) from VARTA
1 year min. at 25
150 ns
ACC
o
C
5-91