Safety instructions
15
Grounding
These instructions are intended for all who are responsible for the grounding of the
drive.
WARNING! Ignoring the following instructions can cause physical injury, death,
increased electromagnetic interference and equipment malfunction:
•
Ground the drive, motor and adjoining equipment to ensure personnel safety in
all circumstances, and to reduce electromagnetic emission and interference.
•
Make sure that grounding conductors are adequately sized as required by
safety regulations.
•
In a multiple-drive installation, connect each drive separately to protective
earth (PE).
•
Where EMC emissions must be minimized, make a 360° high frequency
grounding of cable entries at the cabinet lead-through in order to suppress
electromagnetic disturbances. In addition, connect the cable shields to
protective earth (PE) in order to meet safety regulations.
Note:
•
Power cable shields are suitable for equipment grounding conductors only
when adequately sized to meet safety regulations.
•
As the normal leakage current of the drive is higher than 3.5 mA AC or 10 mA
DC, a fixed protective earth connection is required by EN 50178, 5.2.11.1.
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