ABB DCS550 Series, Manual

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Safety instructions
3ADW000379R0501 DCS550 Manual e e
Grounding
These instructions are intended for all who are responsible for the grounding of the drive. Incorrect grounding
can cause physical injury, death and/or equipment malfunction and increase electromagnetic interference.
WARNING!
•
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 and marked 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 (e.g. conductive
sleeves) of screened cable entries at the cabinet lead-through plate.
Note:

Power cable shields are suitable as 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.
Printed circuit boards and fiber optic cables
These instructions are intended for all who handle the circuit boards and fiber optic cables. Ignoring the
following instructions can cause damage to the equipment.
WARNING!
The printed circuit boards contain components sensitive to electrostatic discharge. Wear a
grounding wristband when handling the boards. Do not touch the boards unnecessarily.
Use grounding strip:
ABB order no.: 3ADV050035P0001
WARNING!
Handle the fiber optic cables with care. When unplugging optic cables, always grab the
connector, not the cable itself. Do not touch the ends of the fibers with bare hands, as the fiber
is extremely sensitive to dirt. The minimum allowed bend radius is 35 mm (1.38 in.).