Changing The Battery - B&R PC 3100 User Manual

8.2 Changing the battery

Warning!
The battery is only permitted to be replaced with a CR2477N battery. The use of any other battery may
present a risk of fire or explosion.
The battery can explode if handled improperly. Do not recharge, disassemble or dispose of the battery
in fire.
The lithium battery ensures the retention of the internal real-time clock (RTC) and CMOS data.
The following lithium replacement batteries are available: 4A0006.00-000 (1 pc.) and 0AC201.91 (4 pcs.).
Note the following when changing the battery:
• 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, changing under operating voltage is not permitted,
however; local regulations must be observed!
• The battery is only permitted to be changed by qualified personnel.
• When changing the battery in a voltage-free state, any BIOS settings made are retained (stored in volt-
age-safe EEPROM). The date and time must be set again since this data is lost during the change.
8.2.1 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).
4. Remove the battery from the adapter and replace it.
Note:
The battery is not permitted to be held by its edges. Insulated tweezers may also be used to insert
the battery.
When reinserting, pay attention to the polarity. The positive terminal is marked on the adapter;
this must match the positive terminal of the battery.
Panel PC 3100 panel mount device User's manual V 2.10
Maintenance
301