Mitsubishi Electric Q13UDVCPU - Page 623

621
APPENDICES
A
Appendix 4 Battery Life Appendix 4.2 Battery lives of CPU modules
(b) QnUDVCPU
The battery life differs depending on the use of an extended SRAM cassette and the power-on time ratio.
CPU module
Extended SRAM
cassette
Power-on
time ratio
*1
Battery life
Q6BAT
Guaranteed value
*2
Actual service value
(Reference value)
*3
After SM52 turned on
(Backup power time after
an alarm
*4
)
Q03UDVCPU
Unused
0%
41,400 hours
4.72 years
43,800 hours
5.00 years
600 hours
25 days
30%
43,800 hours
5.00 years
50%
70%
100%
Q4MCA-1MBS
0%
26,600 hours
3.03 years
43,800 hours
5.00 years
600 hours
25 days
30%
38,000 hours
4.33 years
50%
43,800 hours
5.00 years
70%
100%
Q4MCA-2MBS
0%
23,100 hours
2.63 years
43,800 hours
5.00 years
600 hours
25 days
30%
33,000 hours
3.76 years
50%
43,800 hours
5.00 years
70%
100%
Q4MCA-4MBS
0%
17,400 hours
1.98 years
43,800 hours
5.00 years
600 hours
25 days
30%
24,800 hours
2.83 years
50%
34,800 hours
3.97 years
70%
43,800 hours
5.00 years
100%
Q4MCA-8MBS
0%
11,000 hours
1.25 years
43,800 hours
5.00 years
600 hours
25 days
30%
15,700 hours
1.79 years
50%
22,000 hours
2.51 years
70%
36,600 hours
4.17 years
100%
43,800 hours
5.00 years