Battery; Changing The Battery; Fig. 8-6: Screws On The Standard Device (Left) / Field Bus Device - Bosch Rexroth IndraControl VCP 25 Project Planning Manual

8-6 Bosch Rexroth AG | Electric Drives and Controls
Maintenance and Installation
8.9

Battery

8.9.1

Changing the Battery

The built-in battery preserves the data in the CMOS-RAM and supplies
the real-time clock. The minimum battery life is 5 years, even under
unfavorable operating conditions. When the battery runs down, the
message "Change battery" is generated automatically.
We recommend you change the battery approximately every 4 years
as part of the regular maintenance work. A pre-assembled battery
including connector can be obtained directly from Bosch Rexroth.
If the "Change battery" message is detected too late, e.g. the real-time
clock stopped or shows the wrong date, data in the CMOS-RAM may
have already been lost. For this reason, after changing a battery,
always check data such as passwords that can be modified, parame-
ters in the system variables, recipe data sets and entries in the mes-
sage system.
To ensure that the data in the CMOS-RAM and the time are preserved,
it is possible to change the battery under operating voltage. Observe
the safety notes!
1. Remove the threaded bolts of the interfaces (see figure).
2. Remove the screws (see figure) on the rear panel of the device and
lift off the housing.
3. Remove the cable fastener securing the battery.
4. Disconnect the connector from the battery and remove the dead bat-
tery.
5. Plug in the cable of the new battery.
6. Use a cable fastener to attach the new battery to the housing.
7. Place the rear panel back onto the device.
8. Carefully tighten the screws of the rear panel and then the threaded
bolts of the interfaces.
Fig. 8-6: Screws on the standard device (left) / field bus device (right)
Rexroth IndraControl VCP 25 | R911299720 / 02