Amtech
13.4
13
(3) It is not necessary to use shielded cables for the control circuit wiring inside the metal cabinet.
However, make the EMI filter power source cable and the motor cable as short as possible, and
separate them as far from each other as possible.
(4) In order to suppress the noise emission from the cables, earth the shield of the power source
cable and motor cable to the metal cabinet with metal clamps.
(5) Use the shielded cables for the drive control wiring and earth the shield to the metal cabinet with a
metal clamp.
EN 61800-3 Category C3 conformity is achieved by grounding the unit to the metal cabinet.
E
Fig.13-2
EMC correspondence
Shield grounded metal for
A shield part is clamped certainly.
Screened motor cable
Inverter
Screened
control cable
Power cable
Metal cabinet
Copper plate
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