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APPENDICES
A
Appendix
8 EM
C
and Low Volt
ag
e
Direc
tives
Appendix
8.
1 M
e
asures
t
o
c
o
mply wit
h t
h
e
EM
C Direct
iv
e
(2) Installation in a control panel
Ethernet adapter modules are open type devices and must be installed inside a control panel.
This ensures safety as well as effective shielding of electromagnetic noise that is generated from the Ethernet
adapter module.
(a) Control panel
• Use a conductive control panel.
• When securing the top or bottom plate using bolts, cover the grounding part on the control panel so that
the part will not be painted.
• To ensure electrical contact between the inner plate and control panel, take measures such as covering
the bolts so that conductivity can be ensured in the largest possible area.
• Ground the control panel with a thick ground cable so that low impedance can be ensured even at high
frequencies.
• Holes in the control panel must be 10cm diameter or less. If the holes are larger than 10cm, radio wave
may be emitted. In addition, because radio waves leak through a clearance between the control panel and
its door, reduce the clearance as much as possible. The leakage of radio waves can be suppressed by the
direct application of an EMI gasket on the paint surface.
Our tests have been carried out on a panel having the attenuation characteristics of 37 dB (max.) and 30 dB
(mean) (measured by 3m method, 30 to 300MHz).
(b) Wiring power and ground cables
• Provide a ground point near the power supply module. Ground the LG and FG terminals of the power
supply part with the thickest and shortest ground cable (30cm or shorter) possible.
Содержание NZ2GF-ETB
Страница 1: ...CC Link IE Field Network Ethernet Adapter Module User s Manual NZ2GF ETB ...
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Страница 49: ...47 CHAPTER 4 PROCEDURE BEFORE THE OPERATION 4 4 1 Start Up Procedure Memo ...
Страница 82: ...80 10 The following dialog box is displayed 11 Set the switch on the Ethernet adapter module to RUN Click ...
Страница 198: ...196 a Detail Setting ...
Страница 246: ...244 Memo ...
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