Omron NT-series Programmable Terminal V022-E3-1 - Manual (Page 263)

Note

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Section 7-3
Replacing the Battery
The NT600S uses a lithium battery to back up the memory contents.
The battery life is 5 years if the NT600S is used in a location where the ambient
temperature is 25

C. If the temperature at the location of use is higher than this,
the battery life will be shorter. Change the battery at suitable intervals in accor-
dance with the operating environment of the NT600S.
It is advisable to keep a spare battery so that the battery can be replaced immedi-
ately if replacement becomes necessary.
Battery Type C500-BAT08 . . . . . . . . . . . . . . . . . . . . . . . . . .
Battery Replacement Clues Replace the battery in the following cases. The battery must be replaced within 5
days.
- When 5 years have passed since the installation of a new battery.
- When the RUN LED is lit.
 Battery replacing method
Replace the battery by following the procedure given below.
To protect the contents of the memory, the battery must be replaced in less than
5 minutes.
Operation 1. Keep the power ON for at least 1 minute and then turn it OFF.
Unless the power is kept ON for at least 1 minute, the memory contents cannot be
retained for more than 5 minutes without a battery.
2. Turn off the power to the NT600S and remove the lid of the CFL case, located
at the upper right part of the rear of the NT600S: remove the screw with a Phil-
ips head screwdriver, then open the CFL case lid.
Screw securing CFL case lid
CFL case lid