Grounding; Fibre Optic Cables - ABB ACS800 Hardware Manual

8

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.
WARNING!
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Note:
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Fibre optic cables

WARNING!
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Safety instructions
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).
Do not install a drive equipped with an EMC (line) filter to an ungrounded
power system or a high resistance -grounded (over 30 ohms) power system.
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 61800-5-
1, 4.3.5.5.2. The cross-section of the protective earthing conductor must be at
2
least 10 mm Cu or 16 mm
Handle the fibre optic cables with care. When unplugging optic cables, always
grab the connector, not the cable itself. Do not touch the ends of the fibres with
bare hands as the fibre is extremely sensitive to dirt. The minimum allowed
bend radius is 35 mm (1.4").
2
Al.