B.2.1 Removing The Battery - Siemens SIMATIC S5-115U User Manual

Simatic s5 series cpu 941-7ub11 cpu 942-7ub11 cpu 943-7ub11 and cpu 943-7ub21 cpu 944-7ub11 and cpu 944-7ub21
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Maintenance
B.2.1
Removing the Battery
Proceed as follows:
1. Open the battery compartment as follows (see Figure B.1)
Press the slide down.
Swing the battery compartment door out and down.
2. Removing the battery
Remove the battery by pulling the end of the plastic ribbon out. The battery slides out of its
clamp and falls out.
3. Closing the battery compartment door
Close the battery compartment door by swinging it back into place. Latch it with the slide.
2
B.2.2
Installing the Battery
To install a battery, proceed as described below:
1. Open the battery compartment door (see Figure B.1)
Press the slide down and
swing the battery compartment door out and down.
Install the battery after noting the following points:
The poles are indicated on the back of the battery compartment.
The plastic ribbon should be to the left of the battery so that its end stays in a freely accessible
position.
Before using a lithium battery, you should depassivate it by loading it with 100 ohms for two
hours.
2. Install the battery
3. Close the battery compartment door.
Close the door of the battery compartment by swinging it back into place. Latch it with the
slide.
B-2
Batt.
3.4V/5Ah
Replace by
trained
personnel
only!
Figure B-1. Opening the Battery Compartment
S5-115U Manual
1
EWA 4NEB 811 6130-02b

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