Mitsubishi Electric GOT SIMPLE Series, User Manual

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5 EMC DIRECTIVE
5.2 EMC Directive Requirements
41
5
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Treatment of the power cable and the ground cable
Twist the ground cable led from the ground point with the power cable.
Twisting with the ground cable relieves more noise from the power cable to the ground.
When a noise filter is installed to the power cable, twisting the power cable and the ground cable may not be required.
Installing a noise filter (power supply line filter)
A noise filter is a part to effectively reduce conducted noise.
Except some models, installation of a noise filter to the power supply lines is not necessary. However, installing the noise filter
can reduce conducted noise.
The noise filter is effective to reduce conducted noise in the band of 10 MHz or less.
Use a noise filter equivalent to the following noise filters (double
π -type filters).
Precautions
The following shows the precautions for installing a noise filter.
■
Prohibition of bundling cables
Do not bundle the input and output cables of the noise filter.
Bundling the cables inducts the noise from the output-side cable into the input-side cable where noise has been eliminated by
the noise filter.
■
Grounding the noise filter
Connect the ground terminal of the noise filter to the control panel with a short cable as much as possible (approximately 10
cm).
Model Manufacturer Rated current Rated voltage
FN343-3/05 SCHAFFNER 3A 250V
FN660-6/06 SCHAFFNER 6A
RSHN-2003 TDK 3A
Input side
(power supply side)
Output side
(device side)
Filter
Wire the input and output cables separately.
Filter
Input side
(power supply side)
Induction
Output side
(device side)
Bundling the input and output cables inducts noise.
Bundling