Replacing The Battery; The Cpu Unit - Omron NX Series Hardware User Manual

7 Inspection and Maintenance
7-2

Replacing the Battery

The separately-sold Battery for clock is one of the NX-series components that require periodic re-
placement as preventive maintenance. This section describes how to replace the Battery.
Replacement 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.
Production Date
CJ1W-BAT01
18-03
Replacement Procedure
Use the following procedure to replace the battery.
Precautions for Safe Use
We recommend mounting or replacing the Battery with the power turned OFF to prevent the
CPU Unit's sensitive internal components from being damaged by static electricity and to pre-
vent malfunctions. The Battery can be mounted or replaced without turning OFF the power sup-
ply. To do so, always touch a grounded piece of metal to discharge static electricity from your
body before you start the procedure.
If the Low Battery Voltage error occurs after you mount the Battery, connect the Sysmac Studio
and clear the error.
Additional Information
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.
Additional Information
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 ca-
pacitor cannot be fully charged and the clock data may be lost during battery replacement.
2
Remove the battery cover.
Refer to 5-3-10 Battery Installation on page 5-27 for how to remove it.
7-6
Manufactured in March 2018.
NX-series NX502 CPU Unit Hardware User's Manual (W629)