Before replacing the backup battery, create a data backup (including PLC memory -remanent data!!!).
When replacing the backup battery, remember:
-turn off the machine and the TNC 640.
-the buffer backup battery may only be changed by trained personnel.
-when replacing the backup battery, provide protection against electrostatic discharge. Improper handling may result in damage to components or assemblies due to ESD (electrostatic discharge short circuit)!
Battery type: 1 lithium battery CR 2450N (Renata), ID 315878-01
Battery replacement: Backup battery buffer is on mc main board
– Loosen the screws securing the MC casecover
– Remove the backup battery buffer cover is located on the edge of the PCB