Mitsubishi Electric Q26UD(E)HCPU - Appendix 4.2 Battery Lives of CPU Modules

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APPENDICES
A
Appendix 4 Battery Life Appendix 4.2 Battery lives of CPU modules
Appendix 4.2 Battery lives of CPU modules
(1) Battery (Q6BAT) lives of Basic model QCPUs
*1 The power-on time ratio indicates the ratio of programmable controller power-on time to one day (24 hours).
(When the total power-on time is 12 hours and the total power-off time is 12 hours, the power-on time ratio is 50%.)
*2 The guaranteed value represents a battery life at 70°C, which is calculated based on the characteristic values of
manufacturer-supplied memory (SRAM) and on the assumption of storage within the ambient temperature range of
-25 to 75°C (operating ambient temperature of 0 to 55°C ).
*3 The actual service value (reference value) represents a battery life that is calculated based on the values measured at
storage ambient temperature of 40°C. This value is intended for reference only, as it varies with characteristics of the
memory.
*4 In the following status, the backup time after power off is 3 minutes.
• The battery connector is disconnected.
• The lead wire of the battery is broken.
CPU module
Power-on time
ratio
*1
Battery life
Guaranteed
value
*2
Actual service value
(Reference value)
*3
After SM52 turned on
(Backup power time
after an alarm
*4
)
Q00JCPU
0%
26,000 hours
2.96 years
43,800 hours
5.00 years
710 hours
30 days
30%
37,142 hours
4.23 years
50%
43,800 hours
5.00 years
70%
100%
Q00CPU
0%
26,000 hours
2.96 years
43,800 hours
5.00 years
710 hours
30 days
30%
37,142 hours
4.23 years
50%
43,800 hours
5.00 years
70%
100%
Q01CPU
0%
5,600 hours
0.63 years
25,175 hours
2.87 years
420 hours
18 days
30%
8,000 hours
0.91 years
35,964 hours
4.10 years
50%
11,200 hours
1.27 years
43,800 hours
5.00 years
70%
18,666 hours
2.13 years
100%
43,800 hours
5.00 years