Grounding - ABB DCS800 Hardware Manual

WARNING! The printed circuit boards contain components sensitive to electrostatic
discharge. Wear a grounding wrist band when handling the boards. Do not touch the
boards unnecessarily.

Grounding

These instructions are intended for all who are responsible for the grounding of the
drive. Incorrect grounding can cause physical injury, death or equipment malfunction
and increase electromagnetic interference.
•
Ground the drive, motor and adjoining equipment to ensure personnel safety in
all circumstances, and to reduce electromagnetic emission and pick-up.
•
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).
• Minimize EMC emission and make a 360° high frequency grounding of
screened cable entries at the cabinet lead-through.
•
Do not install a drive with EMC filter on an ungrounded power system or a high
resistance-grounded (over 30 ohms) power system.
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 (stated by EN 50178, 5.2.11.1), a fixed protective earth connection is
required.
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Safety instructions