Mitsubishi FX3U-64CCL User Manual page 13

FX -64CCL User's Manual
3U
Caution to conform with EC Directives
• Installation in Enclosure
Programmable logic controllers are open-type devices that must be installed and used within conductive
control cabinets. Please use the programmable logic controller while installed within a conductive shielded
control cabinet. Please secure the cabinet door to the control cabinet (for conduction).
Installation within a control cabinet greatly affects the safety of the system and aids in shielding noise from the
programmable logic controller.
• Control cabinet
- The control cabinet must be conductive.
- Ground the control cabinet with the thickest possible grounding cable.
- To ensure that there is electric contact between the control cabinet and its door, connect the cabinet and
its doors with thick wires.
- In order to suppress the leakage of radio waves, the control cabinet structure must have minimal
openings. Also, wrap the cable holes with a shielding cover or other shielding devices.
- The gap between the control cabinet and its door must be as small as possible by attaching EMI gaskets
between them.
*1. These wires are used to improve the conductivity between the door and control cabinet.
• Configuration example inside control cabinet
L N
Power
cable
Main unit
CC-Link dedicated cable
Cable clamp
(AD75CK,
MITSUBISHI)
Conductive control cabinet
• Wiring simplified diagram
Termi- Master
nating unit
resistor
DA
DB
DG
SLD
FG
Shielding cover
EMI gasket
Wires*1
24V DC power
Ground
supply
cable
24+ 24-
FX -64CCL
3U
DA DB DG SLD
Ground
cable
(Blue) (Blue)
(White) (White)
(Yellow) (Yellow)
CC-Link
Dedicated
Cable
Shielded cable
FX -64CCL
3U
(Blue)
DA
(White)
DB
(Yellow)
DG
CC-Link
SLD
Dedicated
Cable
Standards
Other Termi-
station nating
resistor
(Blue)
DA
(White)
DB
(Yellow)
DG
SLD
FG
7