3.6 Battery Inspections
3-6
3.6 Battery Inspections
The NX100 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 “5.1.1 Replacing Parts of the CPU Unit.”
3.7 Power Supply Voltage Confirmation
Check the voltage of 1, 3, 5 terminal of the circuit breaker (QF1) with an electric tester.
Circuit Breaker (QF1)
Power Supply Voltage Confirmation
Measuring Items Terminals Correct Value
Correlate voltage Between 1 and 3, 3
and 5, 5 and 1
200 to 220V (+10%, -15%)
Voltage between earth
(phase-S ground)
Between 1 and E, 5
and E
200 to 220V (+10%, -15%)
Between 3 and E About 0V
Breaker
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