Справочник Пользователя для Mitsubishi Electronics QSPCU
11
MAINTENANCE AND INSPECTION
11.3 Battery Life and Replacement Procedure
11.3.1 Battery lives of CPU modules
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1. Use the battery within the time shown by the guaranteed value of the battery
life.
If the battery may be used exceeding the time shown by the guaranteed
battery life value, perform the following.
If the battery may be used exceeding the time shown by the guaranteed
battery life value, perform the following.
• Back up programs and the operation/error history in advance after SM52
turns on (within the power failure compensation time after alarm
occurrence).
occurrence).
2. The life of Q6BAT is 5 years when not connected to a CPU module.
3. When the battery-low special relay SM52 turns on, immediately change the
3. When the battery-low special relay SM52 turns on, immediately change the
battery.
If an alarm has not yet occurred, it is recommended to replace the battery
periodically according to the conditions of use.
If an alarm has not yet occurred, it is recommended to replace the battery
periodically according to the conditions of use.