Fitting The Lithium Battery - Siemens S5-155U System Manual

Power Supply Units

Fitting the lithium battery

Notes relating to the
lithium battery
How to fit the lithium battery
4 - 34
The backup battery (Type C) contains lithium (more than 0.5 g) and is
delivered separately from the power supply unit, because of special
shipping regulations.
Caution
Improper replacement of the battery can result in explosion
hazard. If should only be replaced by the same type or an
equivalent one recommended by the manufacturer. Used batteries
should be disposed of according to the manufacturer's
instructions.
The backup battery must be fitted before the programmable controller
is placed in operation. Without a backup voltage, the PLC will remain
in the Stop state after system voltage is switched on.
Only use battery compartments marked -A1155-B21 (red label).
Fit the lithium battery in the following steps:
Step Action
1 Slide the battery compartment cover (A) downwards.
2 Pull the battery compartment (B) out.
3 Insert the lithium battery in the battery compartment.
Important
Ensure correct polarity.
4 Slide the battery compartment in.
5 Close the cover.
+
Battery
Compartment (B)
*
Cover (A)
System Manual
C79000-B8576-C199-03