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.
Information:
The self-discharge time when changing the battery is approx. 2 minutes.
Required tools
•
Flat-blade screwdriver
Procedure
1. Disconnect the power supply cable to the Power Panel (disconnect the power cable).
2. Carry out electrostatic discharge on the housing or at the ground connection.
Power Panel C80 User's manual V1.02
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