Chapter 4 CPU Module
4-
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4.3 Battery
4.3.1 Battery Specifications
Items
Specification
Nominal voltage/current
DC 3.0 V / 1,800 mAh
Warranty
5 years (ambient temperature)
Purpose
Program and data backup, RTC operation when power-off
Specification
Manganese dioxide lithium battery
Outer dimension (mm)
φ
17.0 X 33.5 mm
4.3.2 Notice in Using
1) Do not apply the heat or solder to the electric pole. (If not, battery life shortening may be caused.)
2) Do not measure the voltage with tester or have a short-circuit. (If not, fire or flames may be caused.)
3) Do not disassemble the battery.
4.3.3 Battery Durability
The durability of battery depends on power-out time, ambient temperature etc. However, these CPUs are
designed to use the battery around 10 years under normal circumstances.
If the voltage of battery is lowered, CPU module occurs ‘Battery voltage drop warning’ . It is available to check it
through CPU module LED and flag or error message of XG5000.
As the battery works for an amount of time normally even after ‘battery voltage drop warning’ occurs, you can
take an action after warning in the system of daily checking.
Notes
In general, the battery warning occurs 10 years after purchasing but it may occur earlier due to a poor
battery or excessive current discharge caused by leakage current etc. If the warning occurs again within
the short time after battery change, you need to request A/S service for CPU module.
