11 Expansions and Accessories
Installation manual for PMC tendo DD5/PMCprimo Drive3 Page 111
11.1.5.3 Replacing the buffer battery
The buffer battery has to be replaced when “BATT” appears in the display. With present 24 V
supply voltage, the buffer memory remains intact.
Battery type: CR1225
Procedure:
1. Remove all connectors.
2. Unscrew both M3 screws.
3. Remove the PMCprimo board.
4. Connect the 24 V voltage supply (X10, pin 2+3)
5. Replace battery, observe polarity!
6. Disconnect 24 V voltage supply.
7. Reinstall the PMCprimo board, and screw both M3 screws.
8. Connect all connectors.
9. Check: The display “BATT” expires and shows the actual status of the control.