Mitsubishi Electric Q172CPU User Manual download pdf (Page 54)

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2 SYSTEM CONFIGURATION

(7) Selection of Q172EX, Q173PX

Synchronous encoder

Item

Serial absolute Incremental

Manual pulse generator

Q173CPU(N) 12 modules

Q172CPU(N) 8 modules

3 modules

Module selection Q172EX Q173PX

(8) Q173CPU(N)/Q172CPU(N) internal rechargeable battery

• Initial charging of the Q173CPU(N)/Q172CPU(N)

Turn on the power supply and charge the internal rechargeable battery for

eight hours or more, before starting to use the Q173CPU(N)/Q172CPU(N).

It is possible to provide backup power for the IC-RAM memory for at least

200 hours by charging the internal rechargeable battery for eight hours or

more, even if it is empty.

If the battery is charged for five days while applying power eight hours a

day, i.e., 40 hours of normal operation, it will be able to provide backup

power for the IC-RAM memory for 1100 hours.

Battery backup by the external battery will be necessary if there is a

possibility that a continuous power off that lasts longer than the continuous

power failure hours for the internal rechargeable battery specified in the

table below may occur, for example when transporting the system on a

ship.

Continuous power failure time [h]

Item

Guaranteed time (MIN) Actual time (TYP)

Charging time: 8 hours or more

200 500

Internal rechargeable

battery

(Note)

Charging time: 40 hours or more

1100 4300

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Mitsubishi Electric Q172CPU User Manual Page 54