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7 Inspection and Maintenance
NX-series NX1P2 CPU Unit Hardware User’s Manual (W578)
7-2 Replacing the Battery
7
7-2 Replacing the Battery
The separately-sold Battery for clock is one of the NX-series components that require periodic
replacement as preventive maintenance. This section describes how to replace the Battery.
Use the Battery CJ1W-BAT01 for replacement.
Precautions for Correct Use
Be sure to mount a Battery within two years of the production date shown on the Battery label.
Use the following procedure to replace the battery.
We recommend mounting or replacing the Battery with the power OFF to prevent the CPU
Unit's sensitive internal components from being damaged by static electricity. The Battery can
be mounted or replaced without turning OFF the power supply. To do so, always touch a
grounded piece of metal to discharge static electricity from your body before starting the proce-
dure.
If the Low Battery Voltage error occurs after you mount the Battery, connect the Sysmac Studio
and clear the error.
UL standards require that batteries be replaced by experienced technicians. Always place an
experienced technician in charge of battery replacement.
1 Turn OFF the power supply to the Controller.
If the CPU Unit has not been ON, turn it ON for at least five minutes and then turn it OFF.
The CPU Unit has a built-in capacitor that retains the clock data during battery replacement or
power interruptions.
If power is not turned ON for at least five minutes before replacing the battery, the built-in
capacitor cannot be fully charged and the clock data may be lost during battery replacement.
Replacement Battery
Replacement Procedure
CJ1W-BAT01
15-03
Manufactured in March 2015.
Production Date
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