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

7.1 Changing the battery

The lithium battery buffers the internal real-time clock (RTC) and CMOS data.
Information:
• The product design allows the battery to be changed when the power is switched off to the B&R
device or when it is switched on. In some countries, safety regulations do not allow batteries
to be changed while the module is switched on.
• When changing the battery when the power is switched off, the BIOS settings made are retained
(stored in a voltage-safe EEPROM). The date and time must be reset later since this data is lost
when the battery is changed.
• The battery is only permitted to be replaced by qualified personnel.
Warning!
The battery is only permitted to be replaced by 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.).
7.1.1 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).
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 be congruent with the positive terminal of the battery.
Automation PC 3100 User's manual V 1.00 Translation of the original documentation
Figure 96: Removing the battery adapter
Servicing/Maintenance
251