Mitsubishi A2CCPU User Manual

C.*
8. MAINTENANCE AND INSPECTION /MELSEC-A
P
L-
P
L.
P
L-
P
i
P
L-
P
c
P
P
P
M9006 or M9007 turns on when the voltage of battery for program
backup and power failure compensation reduces.
Even if this special relay turns on, the contents of the program and
power failure compensation are not lost immediately.
However, if the
ON state is overlooked, the PC contents may be
lost.
8.3.1 life
The period in which stored data is guaranteed will vary depending
on device memory capacity
to be retained or length of power
failure. However,
as a preventive maintenance measure, it is
recommended to replace the battery after
4 or 5 years of use even
if the total power failure time is
less than the guaranteed period.
B.ttmy Life (Total power fallurn time) [Hr]
vrluo Win)
*The actually applied value indicates a typical value and the guaranteed value
168
13000 5400
Turns ON
valuo (Typ)
GuarWlt..d
~or~7
Actually applied
I
indicates the minimum value.
Table 8.3 Battery Ufo
8-3
IB (NAI 6623EA

Mitsubishi A2CCPU Specifications

General

Brand	Mitsubishi
Model	A2CCPU
Category	Controller
Language	English