Mitsubishi Electric Q26UD(E)HCPU User Manual page 608

CPU module
Power-on time ratio
Q02CPU
Q02HCPU
Q06HCPU
Q02PHCPU
Q06PHCPU
Q12HCPU
Q25HCPU
Q12PHCPU
Q25PHCPU
Q12PRHCPU
Q25PRHCPU
*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 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.
*5 For the High Performance model QCPU, these values are applicable when the serial number (first five digits) of the CPU
module is "05011" or later.
For the battery life of the CPU module whose serial number (first five digits) is "05010" or earlier, refer to Page 641,
Appendix 6.3.
606
*1
Guaranteed value
0%
30%
43,800 hours
50%
5.00 years
70%
100%
20,498 hours
0%
2.34 years
29,959 hours
30%
3.42 years
41,785 hours
50%
4.77 years
70%
43,800 hours
5.00 years
100%
16,609 hours
0%
1.89 years
23,727 hours
30%
2.70 years
33,218 hours
50%
3.79 years
70%
43,800 hours
5.00 years
100%
11,038 hours
0%
1.26 years
16,200 hours
30%
1.80 years
22,075 hours
50%
2.52 years
37,055 hours
70%
4.23 years
43,800 hours
100%
5.00 years
*5
Battery life
Q8BAT
Actual service value
*2
*3
(Reference value)
43,800 hours
5.00 years
43,800 hours
5.00 years
43,800 hours
5.00 years
29,609 hours
3.38 years
42,311 hours
4.83 years
43,800 hours
5.00 years
After SM52 turned on
(Backup power time
*4
after an alarm )
240 hours
10 days
240 hours
10 days
192 hours
8 days
96 hours
4 days