Mitsubishi Electric Q173CPUN - 6.4.1 Battery service life time

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6 INSPECTION AND MAINTENANCE
6.4.1 Battery service life time
(1) Q173CPU(N)/Q172CPU(N), Q172EX module battery service life
time
The battery service life time corresponding to the type is shown below.
Battery service life time (Total power failure time) [h]
(Note-1)
Type Classification
Guaranteed time
(MIN)
Actual time
(TYP)
After the battery
decrease
Charging time:
8 hours or more
200 500
Internal
rechargeable
battery
(Note-3)
Charging time:
40 hours or more
1100 4300
No battery decrease
detection
Q173CPU(N)/
Q172CPU(N)
External battery
(A6BAT/MR-BAT)
(Note-2)
60000 240000
120
(After M9006, M9007 on)
MR-HENC 1 10000 30000
MR-HENC 2 5000 15000
Q170ENC 1 8000 24000
Q172EX
Internal battery
(A6BAT/MR-BAT)
Q170ENC
2 4000 12000
40
(After Error code 1152)
(Note-1) : The actual time in use means the averaged time, and the guaranteed time means the minimum time.
(Note-2) : The external battery for Q173CPU(N) is installed to the Dividing unit(Q173DV).
The external battery for Q172CPU(N) is installed to the Battery unit(Q170BAT).
(Note-3) : The internal rechargeable battery for Q173CPU(N)/Q172CPU(N) can not be replaced.
Even if the A6BAT/MR-BAT is not connected to the
Q173CPU(N)/Q172CPU(N)/Q172EX or a total power failure time does not
exceed the guaranteed value, replace it with a new one in 4 to 5 years.
If a total of power failure time exceeds the guaranteed value specified above the
M9006, M9007 is turned on, replace the battery with a new one immediately.