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APPX
Appendix 6 EMC and Low Voltage Directives
• When a duct is used (problematic example and modification example)
External power supply
Use a reinforced or double insulated CE-marked external power supply, and ground the FG terminal. Ground the FG
terminals.
• External power supply used for the tests conducted by Mitsubishi: PS5R-SF24 manufactured by IDEC Corporation
• Problematic example
The drive units are placed near the noise source. The
connection cables between the programmable controller
and drive units are too long.
• Modification example
The programmable controller and drive units are placed
closely. The connected cables between them are placed
separately from the power line and the shortest. (In this
example, the cables are connected without using the
duct.)
Shaded part: Wiring duct
Relay Relay
Relay
Drive
unit
Drive
unit
Noise generating
device
(e.g. power system)
Programmable
controller
Noise generating
device
(e.g. power system)
Programmable
controller
Relay Relay
Relay
Drive
unit
Drive
unit
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