Omron NSJ CONTROLLERS - 03-2008 Operation Manual page 235

Maintenance and Replacement Methods
Low Battery Indicators
1,2,3...
Note
Replacement Battery
Note
204
Note The minimum lifetime is the memory backup time at an ambient temperature
of 55 ° C. The typical lifetime is the memory backup time at an ambient temper-
ature of 25 ° C.
Memory Backup Time
5 yr
4 yr
3 yr
2 yr
1 yr
This graphic is for reference only.
If the ERR/ALM indicator flashes and the RUN indicator on the Display Sec-
tion flashes red, use one of the following methods to see if a low battery volt-
age has been detected.
1. Connect the CX-Programmer, go online, and double-click Error Log in the
Project Workspace. Then check for a battery error (non-fatal error) in the
NSJ Controller errors.
2. Press two of the four corners of the Display Section to display the System
Menu. Press the Special Screen Tab, start the Troubleshooter, and select
the NSJ Troubleshooter. A battery error (non-fatal error) will be displayed
in reverse video if a low battery voltage has been detected.
If a battery error has occurred, first check the battery connector to see if the
battery is connected properly. If the battery connection is okay, replace the
battery as soon as possible.
Once a low-battery error has been detected, it will take 5 days at room tem-
perature before the battery fails assuming that power has been supplied at
least once a day. (See note.) Battery failure and the resulting loss of data in
RAM can be delayed by ensuring that the NSJ Controller's power is not turned
OFF until the battery has been replaced.
The battery will discharge faster at higher temperatures, e.g., 4 days at 40 ° C
and 2 days at 55 ° C.
Use the CJ1W-BAT01 Battery Set.
Be sure to install a replacement battery within two years of the production
date shown on the battery's label. The production date is read as follows:
Production Date
CJ1W-BAT01
Manufactured in June 2002.
02-06
25°C
40°C 55°C
Section 11-3
Ambient temperature