Mitsubishi Q2ACPU User Manual page 337

21. MAINTENANCE AND INSPECTION
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Memory card model name
Q1MEM-64S
Q1MEM-128S
Q1MEM-256S
Q1MEM-512S
Q1MEM-1MS
Q1MEM-2MS
Q1MEM-64SE
Q1MEM-128SE
Q1MEM-256SE
Q1MEM-512SE
Q1MEM-1MSE
Battery life of memory card
The battery life of memory card differs depending on the memory capacity. The life
for each memory is shown in Table 21.4.
Table 21.4 Battery lives of memory cards
Guaranteed value (MIN)
* Actual value indicates a rough average value and guaranteed value indicates the minimum
value.
The guide for preventive maintenance is as follows.
1) Replace the battery in four to five years even when it has not been used
exceeding the guaranteed value shown in the above table.
2) Replace the battery when it has been used exceeding the guaranteed value
shown in the above table and SM51 is on.
Battery life [hr]
Actual value (TYP)
5256
2628
5256
2628
7008
2628
5256
5256
5256
5256
2628
21 - 7
After SM51 is turned ON
23652
12264
23652
12264
23652
12264
23652
23652
23652
23652
12264
8
6
8
6
6
6
8
8
8
8
6