Safety instructions
10
3ADW000462R0301 DCS880 Hardware Manual e c
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 mA
AC
or 10 mA
DC
(stated by EN 50178, 5.2.11.1), a fixed protective earth connection is required.
-
For securing protection against electrical shock, in case of a short circuit
with negligible impedance to a PE conductor or against earth, according
IEC 60364-4-41 clause 411.3.2.5 external RCD equipment must be used.
