3.6 Battery Inspections
3-6
3.6
Battery Inspections
The XRC has a battery that backs up the important program files for user data in the CMOS
memory.
A battery alarm indicates when a battery has expired and must be replaced. The programming
pendant display and the message "Memory battery weak" appears at the bottom of the dis-
play.
The way to replace the battery is described in “4.1.1 Replacing the Disconnecting Switch”.
3.7
Power Supply Voltage Confirmation
Check the voltage of 1 (R), 3 (S), 5 (T) terminal of the disconnecting switch (QS1) with an
electric tester.
Disconnecting Switch
Power Supply Voltage Confirmation
Measuring Items Terminals Correct Value
Correlate voltage Between 1 - 3 (R - S)
Between 3 - 5 (S - T)
Between 1 - 5 (R - T)
575/480/240V (+10%, -15%)
Voltage between earth
(S phase ground)
Between 1 - E (R - E)
Between 5 - E (T - E)
575/480/240V (+10%, -15%)
Between 3 - E (S - E) About 0V
3(S) 5(T) E
E4(V) 6(W)
1(R)
2(U)
OFF
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