Maintenance; Changing The Battery - B&R Automation PC 3100 User Manual

Maintenance

8 Maintenance
The following chapter describes the maintenance work that can be carried out by a qualified and trained end user.
Information:
Only components approved by B&R are permitted to be used for maintenance work.

8.1 Changing the battery

The lithium battery ensures the retention of the internal real-time clock (RTC) and CMOS data.
Information:
• The product design allows the battery to be changed when the PLC is in a voltage-free state
as well as when the B&R device is switched on. In some countries, however, changing is not
permitted while operating voltage is applied.
• When changing the battery in a voltage-free state, any BIOS settings made are retained (stored
in voltage-safe EEPROM). The date and time must be set again afterwards since this data is
lost during the change.
• The battery is only permitted to be changed by qualified personnel.
Warning!
The battery is only permitted to be replaced with a Renata CR2477N battery. The use of another battery
may present a fire or explosion hazard.
The battery can explode if handled improperly. Do not recharge, disassemble or dispose of the battery
in fire.
The following lithium replacement batteries are available: 4A0006.00-000 (1 pc.) and 0AC201.91 (4 pcs.).
8.1.1 Changing the battery
1. Disconnect the power supply cable to the B&R industrial PC (disconnect the power cable).
2. Carry out electrostatic discharge on the housing or at the ground connection.
3. Remove the battery adapter of the device (protected against reverse polarity).
214 Automation PC 3100 User's manual V 2.10