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4-1 CPU Battery
When the battery is nearly discharged, the ALARM indicator will blink, bit
A42615
will turn ON, and the message “BA
TT LOW”
will appear on the Program
-
ming
Device. When this occurs, replace the battery within one week to avoid loss
of
data. The battery and connector are provided as a set. T
o replace the Battery
Set, follow the steps below. The entire replacement must be completed within
five minutes 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.
The expected life of the battery is 5 years for any CPU. The memory backup
times are given in the following table.
Model Backup time without power supplied
Guaranteed value Effective value
CV500 or CVM1-CPU01-EV2 9,000 hours
(approx. 1 year)
43,000 hours
(approx. 5 years)
CV1000/CV2000/CVM1-CPU21-EV2
without Expansion DM or
CVM1-CPU11-EV2
5,600 hours
(approx. 0.6 year)
CV1000/CV2000/CVM1-CPU21-EV2
with Expansion DM
2,900 hours
(approx. 0.3 year)
Guaranteed value: Memory
backup time without power
supplied at 55
°C.
Effective value: Memory
backup time without power
supplied at 25
°C.
Battery Replacement
1, 2, 3...
1. Turn on power to the PC for at least one minute.
2. Turn
of
f power to the PC. (Although the battery can be
replaced while power
is being applied to the PC, it is not recommended, as short-circuiting is likely
to occur.)
3. Remove the cover from the battery compartment.
4. Remove the old Battery Set.
5. Install the new Battery Set as shown below.
Battery
connector
Battery holder
Battery Set C500-BA
T08
6. Replace the cover of the battery compartment.
7. When
a Programming Console is mounted to the CPU after the battery has
been replaced, “BATT LOW” will be displayed. This message can be
cleared
by pressing CLR, FUN, MONTR, or just turning the power to the PC
OFF and ON again.
CPU Battery Section 4-1
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