Siemens SINUMERIK 810DE powerline Equipment Manual page 114

9 Maintenance and Service
9.1 Battery replacement (6FC5247-0AA18-0AA0)
The CCU module features battery-backed SRAMs and clock modules. The
back-up voltage is monitored by the control and a monitoring signal is output.
The battery must be replaced within 6 weeks of the monitoring responding. The
battery can be replaced after the controller has been switched off without any
loss of data, as data is retained for approximately 15 minutes.
Backup time
The service life of the batteries used is a minimum of 3 years.
The battery must be removed before the module is put into storage.
Replacement of
The battery is located on the CCU module (see figure 9-1). Before removing the
the battery on the CCU module, please comply with the ESD measures in the Preface and the
transportation and storage conditions specified in section 2.2.1 of this manual.
CCU module
1. Switch off the control.
2. Follow the ESD rules!
3. Remove all connectors, first labeling them if necessary.
4. Loosen the 4 fixing screws of the CCU module and pull it out.
5. Remove the battery and pull out the battery connector. Data backup is
6. Connect the new battery (ensuring correct polarity) and press it into its
7. Reinsert the CCU module and screw it tight.
8. Plug in all connectors correctly.
9-112
ensured for about 15 min by a capacitor.
holder.
SINUMERIK 810D Equipment Manual Configuration CCU (PHC) – 03/2006 Edition
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Copyright © Siemens AG 2006