• Always ground the drive, the motor and adjoining equipment. This is necessary for the
personnel safety. Proper grounding also reduces electromagnetic emission and
interference.
• Make sure that the conductivity of the protective earth (PE) conductors is sufficient. See
the electrical planning instructions of the drive. Obey the local regulations.
• Connect the power cable shields to protective earth (PE) terminals of the drive to make
sure of personnel safety.
• Make a 360° grounding of the power and control cable shields at the cable entries to
suppress electromagnetic disturbances.
• In a multiple-drive installation, connect each drive separately to the protective earth (PE)
busbar of the power supply.
Note:
• You can use power cable shields as grounding conductors only when their conductivity
is sufficient.
• As the normal touch current of the drive is higher than 3.5 mA AC or 10 mA DC, you
must use a fixed protective earth (PE) connection. The minimum size of the protective
earth conductor must comply with the local safety regulations for high protective earth
conductor current equipment. See standard IEC/EN 61800-5-1 (UL 61800-5-1) and the
electrical planning instructions of the drive.
Safety instructions 21
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