Battery Replacement - Mitsubishi MELSEC-Q Series User Manual

4 SET-UP AND PROCEDURE BEFORE OPERATION

4.10.3 Battery replacement

4 - 59
This section explains the battery replacement of the Web server module.
The battery of the Web server module is used for file protection.
It is required to replace the battery when the voltage of the Web server module battery
has dropped.
(1) Checking the Web server module for a battery voltage drop
(a) Check for a battery voltage drop in the battery status area (buffer memory:
7).
(b) The following results at battery error.
1) "1 (ON)" is written to the battery status area (buffer memory: 7).
2) The ERR. LED turns on, and ERR. LED status (X10) and other error
(X1C) turn on.
The file contents will not be erased as soon as the battery error occurs, but
may be erased if the battery error occurrence is overlooked.
(c) Finish battery replacement while the total of the latch time after Battery
status area has turned on is within the specified time.
(2) Web server module battery (Q6BAT) life
(a) The following table shows the Web server module battery life.
Energization
Guaranteed value
time ratio 1
(MIN)
26,000hr
0%
2.96 years
37,142hr
30%
4.23 years
43,800hr
50%
5 years
43,800hr
70%
5 years
43,800hr
100%
5 years
1 The energization time ratio denotes the ratio of power-on time in a day (24
hours).
(When power is on for 12 hours and off for 12 hours, the energization time ratio
is 50%.)
2 The guaranteed value assumes that the storage ambient temperature is -25 to
75 (operating ambient temperature is 0 to 55 ).
3 The value in actual use assumes that the storage ambient temperature is 40
(operating ambient temperature is 25 ).
4 In either of the following status, the guaranteed time after power-off is 3
minutes.
•
The battery connector is disconnected.
•
The battery lead wire is broken.
Battery life
Value in actual use
2 (TYP) 3
43,800hr
5 years
43,800hr
5 years
43,800hr
5 years
43,800hr
5 years
43,800hr
5 years
MELSEC-Q
Turns Y100 on
when battery
error occurs.
Guaranteed time after battery error
occurrence 4
1,500hr
62 days
1,500hr
62 days
1,500hr
62 days
1,500hr
62 days
1,500hr
62 days
4 - 59