Maintenance; Unit Storage - Mitsubishi MELSEC-A A1SD71-S2 User Manual

9. MAINTENANCE
v
MELSEC-A
9. MAINTENANCE
This section describes how to maintain the AlSD71 (unit storage and battery
replacement).
For other modules (i.e., the power module, PC CPU module, I/O module,
special modules, etc.), refer to the appropriate User's Manual.
9.1
Unit Storage
The AlSD71 should be stored in the following environments:
(1)
Ambient temperature
0
to 75 "C.
(2)
Ambient humidity 10 to
90
o / o
RH.
(3)
No
condensation (e.g. due to sudden temperature changes).
(4) No direct exposure to sunlight.
(5) Free from excessive amounts of conductive powder such as dust, iron
filings, oil mist, salt, or organic solvent.
A two hour "warming up" period should be allowed
if
the AlSD71 has not been
powered up for over
12
months. (This is to allow the electrolyte in electrolytic
capacitor to stabilize.) The battery should be replaced every 10 months
if
the
unit is not powered up to maintain buffer memory data.
(If
the A1 SD71 has not
been used for 10 months or more, the data in the AlSD71 could be lost. In
this case, it is necessary to check the set data.)
9 - 1