43
Fig. 3-24 System wiring requirement
If the motor cable is too long or the cross section area of the motor cable is too large, it shall be derated. The
larger the cross section area is, the larger the ground capacitance and ground leakage current will be. If the
cable with large cross section area is used, the output current should be reduced. Note that the current should
be reduced by 5% for every increasing grade of the area.
Shielded/armoured cable: High-frequency low-impedance shielded cable shall be used, such as woven
copper mesh, aluminum mesh or iron mesh.
Generally, the control cable should be shielded cable. The shielded metal mesh must be connected to the
metal enclosure of the drive through the cable clamps on both ends.
Fig. 3-25 Correct grounding method of shielding
PE
PE
Enclosure
Enclosure
Motor cable
Power supply cable
>50cm
>30cm
>20cm
Signal/Control cable
Power supply or motor
cable
Signal/Control cable
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