Grounding - ABB ACS880-07 Hardware Manual

20 Safety instructions
WARNING! Use a grounding wrist band when you handle the printed circuit
boards. Do not touch the boards unnecessarily. The boards contain components
sensitive to electrostatic discharge.
WARNING! Obey these instructions. If you ignore them, equipment malfunction
and damage to the fiber optic cables can occur.
•
Handle the fiber optic cables with care.
•
When you unplug the cables, always hold the connector, not the cable itself.
•
Do not touch the ends of the fibers with bare hands as the ends are extremely
sensitive to dirt.
•
Do not bend the fiber optic cables too tightly. The minimum allowed bend radius is
35 mm (1.4 in).

Grounding


These instructions are for all personnel who are responsible for the grounding of the drive.
WARNING! Obey these instructions. If you ignore them, injury or death and
equipment malfunction can occur, and electromagnetic interference can increase.
•
If you are not a qualified electrician, do not do grounding work.
•
Always ground the drive, the motor and adjoining equipment. This is necessary for the
personnel safety. Proper grounding also reduces electromagnetic emission and
interference.
•
Make sure that the conductivity of the grounding conductors is sufficient. See section
Selecting the power cables
•
Connect the power cable shields to protective earth (PE) of the drive to make sure of
personnel safety.
•
Make a 360° grounding of the power and control cable shields at the cable entries to
suppress electromagnetic disturbances.
•
In a multiple-drive installation, connect each drive separately to the protective earth
(PE) busbar of the switch board or the transformer.
Note:
•
You can use power cable shields as grounding conductors only when their conductivity
is sufficient.
•
As the normal touch current of the drive is higher than 3.5 mA AC or 10 mA DC, you
must use a fixed protective earth connection. See standard EN 61800-5-1, 4.3.5.5.2.
on page 84. Obey the local regulations.