CV500-SLK21 datasheet(84/182 Pages) OMRON

84 / 182 page

Note The maximum life of the battery is 5 years, regardless of whether power is

supplied to the CPU. The memory backup duration when power is not supplied

to the CPU varies with the ambient temperature, and also depends on whether

the Expansion DM Unit is mounted to the CPU (CV1000 only).

Details of the minimum lifetime of the battery are provided in

Appendix B Specifi

cations.

4-2

Memory Card Battery

The RAM Memory Card is provided with a backup memory battery.

When the Memory Card is mounted to the CPU and the battery life is close to

expiring, the CPU ALARM indicator will blink, bit A42616 will turn ON, and the

message “BATT LOW” will appear on the Programming Device. When this oc-

curs, replace the battery within one week to avoid loss of data.

The entire replacement must be completed within one minute to ensure that the

data will not be lost.

Caution

Do not short circuit, charge, disassemble, or expose the battery to heat. The bat-

tery fluid is flammable and if mishandled, may cause a fire or explosion. Do not

incinerate the battery after use.

Battery Replacement

Battery case

Slot

Caution

Steps 4 through 7 of the following procedure must be completed within 1 minute.

If the new battery is not inserted within one minute, the contents of memory will

be lost.

1, 2, 3...

1. If the Memory Card (M/C) indicator is not lit, press the Memory Card power

supply switch to turn on power to the Memory Card and leave it on for at least

10 seconds.

2. Press the Memory Card power supply switch to turn off the Memory Card

indicator.

3. Press the Memory Card eject button and remove the Memory Card.

4. Release the battery case by inserting the tip of a pen (or similar object) in the

slot on the side of the Memory Card as shown.

5. Remove the old battery from the case.

6. Install the new battery as shown, with the positive terminal to the top.

Battery

Battery case

7. Insert the battery case back into the Memory Card. Be sure that the case is

installed all the way in.

Memory Card Battery

Section 4-2

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