Omron CS1D DUPLEX SYSTEM - 10-2009 Operation Manual page 463

Replacing User-serviceable Parts
Model Time that
CPU Unit
power is ON
CS1D-CPU@@H 0%
CS1D-CPU6@S
30%
50%
70%
100%
CS1D-CPU4@S 0%
30%
50%
70%
100%
Low Battery Indicators
The time that CPU power is ON shown in the following table (power supply
rate) is calculated as follows:
Power supply rate =
Total time power is ON/(total time power is ON + total time power is OFF)
The following table shows minimum lifetimes and typical lifetimes for the
backup battery.
Minimum lifetime
626 days (1 yr, 8 mo)
886 days (2 yr, 5 mo)
1,225 days (3 yr, 4 mo) 1,825 days (5 yr)
1,825 days (5 yr)
1,825 days (5 yr)
780 days (2 yr, 1 mo)
1,101 days (3 yr)
1,519 days (4 yr, 1 mo) 1,825 days (5 yr)
1,825 days (5 yr)
1,825 days (5 yr)
Note 1. The minimum lifetime is the memory backup time at an ambient tempera-
ture of 55 C. The typical lifetime is the memory backup time at an ambient
temperature of 25 C.
2. There is no difference between the minimum lifetimes and the minimum
times to battery error detection.
3. The battery lifetime and low battery voltage detection will vary under appli-
cation at high power-supply rates.
2000
1800
1600
1400
1200
1000
800
600
400
200
0
0
If the PLC Setup has been set to detect a low-battery error, the ERR/ALM
indicator on the front of the CPU Unit will flash when the CPU Unit detects that
the battery is nearly discharged.
Typical lifetime Min. time for
battery error
detection
1,825 days (5 yr) 626 days
1,825 days (5 yr) 886 days
1,225 days
1,825 days (5 yr) 1,825 days
1,825 days (5 yr) 1,825 days
1,825 days (5 yr) 780 days
1,825 days (5 yr) 1,101 days
1,519 days
1,825 days (5 yr) 1,825 days
1,825 days (5 yr) 1,825 days
CS1D-CPU@@H/CPU6@S (Minimum lifetime)
CS1D-CPU@@H/CPU6@S (Typical lifetime)
CS1D-CPU4@S (Minimum lifetime)
CS1D-CPU4@S (Typical lifetime)
20 40 60
Power-supply rate (%)
Section 11-2
Time from battery
error detection to
complete discharge
5 days
5 days
5 days
5 days
5 days
5 days
5 days
5 days
5 days
5 days
80 100
427