Grounding - ABB ACS800 Series Hardware Manual

•
At installation sites above 2000 m (6562 ft), the terminals of the RMIO board
and optional modules attached to the board do not fulfil the Protective Extra
Low Voltage (PELV) requirements stated in EN 50178 and EN 61800-5-1.
•
The Prevention of unexpected start-up function (option +Q950) does not
remove the voltage from the main and auxiliary circuits.
•
The Safe torque off function (option +Q967) does not remove the voltage from
the main and auxiliary circuits.

Grounding

These instructions are intended for all who are responsible for the grounding of the
drive.
WARNING! Ignoring the following instructions can cause physical injury, death,
increased electromagnetic interference and equipment malfunction:
•
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).
•
ACS800-11: In European CE compliant installations and in other installations
where EMC emissions must be minimized, make a 360° high frequency
grounding of cable entries in order to suppress electromagnetic disturbances.
In addition, connect the cable shields to protective earth (PE) in order to meet
safety regulations.
•
Drives with EMC filter option +E202 or +E200 are not suitable for use in an IT
system (an ungrounded power system or a high-resistance-grounded [over
30 ohms] power system). Before connecting the drive to the power system,
disconnect the EMC filter capacitors as described in section
systems on page 70.
Note:
•
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 (stated by EN 61800-5-1, 4.3.5.5.2), a fixed protective earth connection is
required.
7
IT (ungrounded)
Safety instructions