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8. MEMORIES AND MEMORY CASSETTES
4
8.1.3
/MELSEC
Battery specifications
This section describes thespecifications of battery used for RAM
memory backup and power failure compensation.
Table 8.3 Battery Specifications
voltage
Nominal
3.6 VDC
Guaranteed life
5 years
Total power failureDepends
on memorycassette type as indicated below:
backup
time
A3NMCA-O: Min. 4100 hours, A3NMCA-56:
Min.
450 hours
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Application
External dimensions
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For IC-RAM memory backup and power failure compensation function
e16 (0.63) x 30 (1.18)