Service Life Of The C Controller Module Battery - Mitsubishi Electric Q12DCCPU-V User Manual

6
PREPARATORY PROCEDURES AND SETTING

(2) Service life of the C Controller module battery

The following indicates the service life of the C Controller module batteries.
Power-on
C Controller
*1
module
time ratio
0%
30%
Q12DCCPU-V 50%
70%
100%
0%
30%
Q06CCPU-V,
50%
Q06CCPU-V-B
70%
100%
IMPORTANT
If a battery is not replaced after the battery error, data in the standard RAM, standard
ROM being accessed, or battery-backed-up RAM and/or clock data may be corrupted, or
a file system error may occur.
Table 6.17 Battery life
Q6BAT
Actual service
Guaranteed value
(Reference
*2
value
*3
value)
13,700 hours 39,000 hours
1.57 years 4.45 years
19,100 hours 43,800 hours
2.18 years 5 years
25,800 hours 43,800 hours
2.96 years 5 years
40,000 hours 43,800 hours
4.57 years 5 years
43,800 hours 43,800 hours
5 years 5 years
18,000 hours 43,800 hours
2.05 years 5 years
25,714 hours 43,800 hours
2.93 years 5 years
36,000 hours 43,800 hours
4.10 years 5 years
43,800 hours 43,800 hours
5 years 5 years
43,800 hours 43,800 hours
5 years 5 years
* 1 The power-on time ratio indicates the percentage of power-on time per day (24 hours).
(The power-on time ratio is 50% when the total power-on time is 12 hours and the total power-off or
reset time is 12 hours.)
* 2 The guaranteed value represents a battery life at 70
values of manufacturer-supplied memories (SRAM) and on the assumption of storage within the
ambient temperature range of -25 to 75
* 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
only, as it varies with characteristics of the memory.
* 4 The guaranteed time after power off or during reset is 3 minutes in the following cases:
• The battery connector is disconnected.
• The battery lead wire is broken.
6.7 Specifications, Installation, and Replacement of the Battery
Battery life
Guaranteed
time after Guaranteed
battery error
*2
value
*4
occurrence
600 hours 37,100 hours
25 days 4.25 years
600 hours 43,800 hours
25 days 5 years
600 hours 43,800 hours
25 days 5 years
600 hours 43,800 hours
25 days 5 years
600 hours 43,800 hours
25 days 5 years
1,100 hours
45 days
1,100 hours
45 days
1,100 hours For the Q06CCPU-V(-B), the Q7BAT cannot be
45 days used.
1,100 hours
45 days
1,100 hours
45 days
, which is calculated based on characteristic
(operating ambient temperature of 0 to 55
. This value is intended for reference
6.7.3 Battery replacement
Q7BAT
Actual service Guaranteed
value time after
(Reference battery error
*3 *4
value) occurrence
43,800 hours 600 hours
5 years 25 days
43,800 hours 600 hours
5 years 25 days
43,800 hours 600 hours
5 years 25 days
43,800 hours 600 hours
5 years 25 days
43,800 hours 600 hours
5 years 25 days
).
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