Mitsubishi Electric NZ2GF-CCB User Manual page 137

• Keep the diameter of the holes on the control panel to 10cm or less. If the diameter is larger than 10cm,
electromagnetic wave may be emitted. In addition, because electromagnetic wave leaks through a
clearance between the control panel and its door, reduce the clearance as much as possible. Use of EMI
gaskets (sealing the clearance) can suppress undesired radiated emissions.
• The tests by Mitsubishi were conducted using a control panel having the damping characteristics of 37dB
(maximum) and 30dB (average) (measured at 3m distance, 30 to 300MHz).
(b) Wiring power cables
Provide a ground point to the control panel near the power supply module. Ground the FG (frame ground)
terminal of the power supply module to the ground point with the thickest and shortest ground cable possible
(30cm or shorter).
(3) Cables
Use a shielded cable for the cable connected to the bridge module and may be extended out of the control panel.
If a shielded cable is not used or not grounded correctly, the noise immunity will not meet the required value.
(a) CC-Link IE Field Network cable
The precautions for using CC-Link IE Field Network cables are described below.
• For CC-Link IE Field Network module, use CC-Link IE Field Network cables (SC-E5EW-SM,
manufactured by Mitsubishi Electric System & Service Co., Ltd.).
• A CC-Link IE Field Network cable is a shielded cable. Remove a part of the shield as shown below and
ground the largest possible exposed section to the ground.
(b) Grounding a Ver.1.10-compatible CC-Link dedicated cable
Ground the shield of a cable connected to the CC-Link module or any of the CC-Link stations which is the
farthest from the input power inside the control panel within 30cm from the module or station.
Ver.1.10-compatible CC-Link dedicated cable is a shielded cable. Strip a part of the jacket of the cable as
shown below and ground the exposed shield to the ground as much as possible.
Use the specified Ver.1.10-compatible CC-Link dedicated cable.
CC-Link IE Field Network cable
Shield
Ver.1.10-compatible CC-Link
dedicated cable
Shield
APPENDICES
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