Maintenance and servicing
11.4 Replacing components
Drive converter cabinet units
Operating Instructions, 07/07, A5E00288214A
469
11.4.21
Replacing the cabinet operator panel
1.
Switch the unit into a no-voltage condition.
2.
Open the cabinet.
3.
Disconnect the power supply and communications line on the operator panel.
4.
Release the fastenings on the operator panel.
5.
Remove the operator panel.
6.
Install the new operator panel.
7.
Carry out any other work by reversing the sequence.
11.4.22
Replacing the Backup Battery for the Cabinet Operator Panel
Table 11-2 Technical specifications of the backup battery
Type
CR2032 3 V lithium battery
Manufacturer
Maxell, Sony, Panasonic
Nominal capacity
220 mAh
Maximum permissible charging current
10 mA (restricted to <2 mA in operator panel)
Self-discharge at 20 °C
1 %/year
Service life (in backup mode)
> 1 year at 70 °C; >1.5 years at 20 °C
Service life (in operation)
> 2 years
Replacement
1.
Switch the unit into a no-voltage condition.
2.
Open the cabinet.
3.
Disconnect the 24 V DC power supply and communications line on the operator panel.
4.
Open the cover of the battery compartment.
5.
Remove the old battery.
6.
Insert the new battery.
7.
Close the cover of the battery compartment.
8.
Reconnect the 24 V DC power supply and communications line.
9.
Close the cabinet.
WARNING
To ensure that no data is lost when you replace the battery, you must replace the
battery within one minute.
