YASKAWA Motoman UP6 Instructions Manual page 106

3.6 Battery Inspections
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.
Measuring Items
Correlate voltage
Voltage between earth
(S phase ground)
Power Supply Voltage Confirmation
Terminals
Between 1 - 3 (R - S)
Between 3 - 5 (S - T)
Between 1 - 5 (R - T)
Between 1 - E (R - E)
Between 5 - E (T - E)
Between 3 - E (S - E)
1(R) 3(S) 5(T)
2(U) 4(V) 6(W)
Disconnecting Switch
3-6
Correct Value
575/480/240V (+10%, -15%)
575/480/240V (+10%, -15%)
About 0V
E
E