Grounding - ABB ACS560 Hardware Manual

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.
￭

Grounding

These instructions are for all personnel who are responsible for the electrical installation,
including the grounding of the drive.
WARNING!
Obey these instructions. If you ignore them, injury or death, or 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 to the protective earth (PE)
bus of the power supply. This is necessary for the personnel safety. Proper grounding
also reduces electromagnetic emission and interference.
• In a multiple-drive installation, connect each drive separately to the protective earth
(PE) bus of the power supply.
• Make sure that the conductivity of the protective earth (PE) conductors is sufficient. See
section Selecting the power cables (page
• Connect the power cable shields to the protective earth (PE) terminals of the drive.
• Make a 360° grounding of the power and control cable shields at the cable entries to
suppress electromagnetic disturbances.
Note:
• You can use power cable shields as grounding conductors only when their conductivity
is sufficient.
• Standard IEC/EN 61800-5-1 (section 4.3.5.5.2.) requires that 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 (PE) connection. In addition,
• install a second protective earth conductor of the same cross-sectional area as the
original protective earthing conductor,
or
• install a protective earth conductor with a cross-section of at least 10 mm2 Cu or
16 mm2 Al,
or
• install a device which automatically disconnects the supply if the protective earth
conductor breaks.
50). Obey the local regulations.
Safety instructions 15