4.
SEITINGS
AND PROCEDURES BEFORE
OPERATION
MELSEC-A
4.4
Loading and Installation
4.4.1
Handling
inrtrudionr
(1)
Protect the
AJ71C24
and its terminal block impact.
(2)
Do
not touch or remove the printed circuit bard from the case.
(3)
Do
not allow metal particles or wire offcuts to enter the
AJ71C24.
(4)
Tighten the module mounting and terminal screws as specified below.
I
&rm
I
RS-422 terminal
block
installation screws
(W)
I
78
(8)(6.93) to 137 (14)(12.13)
I
I
Module mounting screws (optional) (M4)
I
78 (8)(6.93) to
118
(12)(10.39)
I
Y
-?
1
d
(5)
To
load the
AJ71C24
onto the base, press the
AJ71C24
against the base
so
that the latch is securely locked.
To
unload the
AJ71C24,
push
the
latch and, after the latch is disengaged from the base, pull the
AJ71 C24
toward you.
4.4.2
Installation environment
Never install the system in the following environments:
(1)
Locations where ambient temperature
Is
outside the range
0
to
55°C
(32
to
131OF).
(2)
Locations where ambient humidity is outside the range
of
10
to
90%RH.
(3)
Locations where dew condensation takes place due
to
sudden tempera-
ture changes.
(4)
Locations where there are corrosive gasses and combustible gasses.
I
(5)
Locations where there is a high level of conductive powder, such as dust
and iron filings, oil mist,
salt,
and organic solvent.
1
Y
(6)
Locations exposed to the direct rays of the sun.
-
(7)
Locations where strong power and magnetic fields are generated.
I
(8)
Locations where vibration and shock are directly transmitted to the main
unit.
4-
10
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