Grounding; Printed Circuit Boards And Fiber Optic Cables - ABB DCS880 Quick Manual

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.
− Do not install a drive equipped with an EMC filter to an ungrounded power system or a high
resistance-grounded (> 30 ohms) power system.
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 mAAC or 10 mADC (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 wrist band 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 (1.4 in.).
3ADW000480R0101 DCS880 Quick guide e a
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Safety instructions