8.4 Replacing the Battery
Unified Controller nv series type2 light Controller Unit Instruction Manual
85
■
Battery replacement cycle
Check the battery installation date labeled on the maintenance cover.
After battery replacement, write down the replacement date on the sheet on the
maintenance cover.
WARNING
Do not connect the battery other way round, charge
it, disassemble it, overheat it, throw it into a fire and
short-circuit it.
Doing so may cause explosion or generate a fire.
WARNING
Replace the battery every 5 years when the annual
average temperature is 30
C
or less, or every 2
years when the annual average temperature is 30
C
or more.
The data and programs saved in controller mo
lost by the weak battery and may cause an accident and
damage on the machine due to malfunction.
(Note) In case the controller operation rate is 95% or more.
Remark
・
The battery may be replaced in either the powered or unpowered status. Note
that in the unpowered status, you must complete the replacement within 3 min. If
the equipment is left for a long time with the battery removed, data will be cleared
from RAM memory.
・
When you remove the battery, the BAT LED (Battery Normal) battery may light
up, which is not abnormal. (If the voltage drops in the battery installed status, the
battery is detected properly and the LED goes out.)
・
There is no compatibility with manganese dry or alkaline batteries in terms of
voltage. They must not be used as substitutes.
・
Do not use any battery that has elapsed for 3 years or more since the date of
manufacture.
About the date of manufacture, refer to the production lot.
■
Disposing of the battery
Dispose of the battery according to the relevant local regulations.
Any attempt to disassemble or throw the battery into fire may cause explosion, which is
very dangerous.
Dispose of the battery as it is, without disassembling or throwing it into fire.
A short circuit between the positive and negative electrodes of the lithium battery may
generate smoke or cause fire.
Dispose of the lead wires or the like without cutting or disassembling them and without
any short circuit between the positive and negative electrodes.
Mandatory
Prohibited
Example of production lot
Day of week
（
Monday=1,Tusday=2…
）
The forth week
Month
（
Oct.=X, Nov.=Y, Dec=Z
）
The last number of year
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