B Battery Service Life - Omron CQM1 Operation Manual

The built-in battery is used for retaining the status of the HR and DM areas, the user's program, and other specified
status while power is not being supplied to the CQM1. The total number of hours that the battery can provide
backup power will vary as shown below, depending on the ambient temperature and whether or not a Memory
Cassette with a clock is installed.
Memory Cassette y
with clock
No 43,000 hrs (Approx. 5 years)
Yes 34,500 hrs (Approx. 4 years)
Note 1. Total hours with no current supplied, at an ambient temperature of 55°C.
2. Total hours with no current supplied, at an ambient temperature of 25°C.
Total Time with No Current Supplied (in Years)
5
4
3
2
1
Note The effective life of the battery is five years. Replace the battery every five years even if it could be used
longer.
Appendix B
Battery Service Life
Total hours with no current supplied
Guaranteed time (see note 1)
25°
Capacity (see note 2)
43,000 hrs (Approx. 5 years) , ( pp
No Memory Cassette with
clock function
Memory Cassette with
clock function
40° 55°
y )
Ambient temperature
129