Mitsubishi MOTION CONTROLLERS Q172DCPU Manual de usuario descargar pdf (Pagina 152)

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6 INSPECTION AND MAINTENANCE

POINT

(1) Do not use the battery exceeding its guaranteed life.

(2) When the battery hours (total power failure time) may exceed its guaranteed

value, take the following measure.

• Perform ROM operation to protect a program even if the battery dies at the

Multiple CPU system power-OFF.

• If SM51 or SM52 turns on, the contents of programs, parameters and

absolute position data cannot be guaranteed.

It is recommended to back-up the battery periodically.

(3) When the battery-low special relay SM52 turns on, immediately change the

battery. Even if the alarm has not yet occurred, it is recommended to replace

the battery periodically according to the operating condition

(4) The self-discharge influences the life of battery without the connection to

Q173DCPU/Q172DCPU/Q172DEX. The external battery should be exchanged

approximately every 4 or 5 years.

And, exchange the battery with a new one in 4 to 5 years even if a total power

failure time is guaranteed value or less.

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Mitsubishi MOTION CONTROLLERS Q172DCPU Manual de usuario Pagina 152