Mitsubishi 13J851, Руководство пользователя

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3.1.2 Installation to the control panel
PLCs are open-type devices (devices to be incorporated into other equipment) and
they have to be installed inside the control panel enclosure.* This is very effective
in blocking the noise generated from the PLC with the control panel as well as
ensuring the safety.
*: Also, each network remote station needs to be installed inside the control panel.
However, the waterproof type remote station can be installed outside the control
panel.
(1) Control panel
(a) Use a conductive control panel.
(b) When fixing the top or base plate with bolts, mask the fixing area when
painting so that an electrical contact can be made.
(c) To ensure electrical contact between the control panel door and panel,
remove the paint on the contacting area of the door and panel, apply
conductive gaskets and conducting adhesive tapes and connect the
door and panel with thick crossovers.
(d) Ground the control panel with a thick wire so that a low impedance can
be ensured even at high frequencies.
(e) Holes made in the control panel must be 10cm (3.94inch) diameter or
less. If the diameter is more than 10cm (3.94inch), radio waves can be
leaked.
(f) Ensure the electric contact between the PLC and the inner plate inside
the control panel by galvanizing the inner plate (plating thickness:
10
μ m or more).
(g) Remove the coating of the bolt-fixing areas of the inner plate to ensure
electric contact with the control panel and conductivity in the largest
area as possible.
REMARK
The specifications and external dimensions of the control panel are provided
on the next page.