ABB ACS 600 Series, Hardware Manual

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Appendix C – IEC Installation
C-4 ACx=ACS/ACC/ACP ACS/ACC/ACP 604/607 Drives
Motor Cable Shield
To effectively suppress radiated and conducted radio-frequency
emissions, the shield conductivity must be at least 1/10 of the phase
conductor conductivity. One way of evaluating the effectiveness of the
shield is the shield inductance, which must be low and only slightly
dependent on the frequency. These requirements are easily met with a
copper or aluminium shield/armour. The minimum requirement of the
motor cable shield of the ACx 600 is shown below. It consists of a
concentric layer of copper wires with an open helix of copper tape. The
better and tighter the shield is, the lower is the emission level and the
bearing currents.
Cable Routing The motor cable should be installed away from other cable routes.
Motor cables of several frequency converters can be run in parallel
installed next to each other. It is recommended that the motor cable,
mains cable and control cables be installed on separate trays
(minimum distance 500 mm). Long parallel runs of motor cable with
other cables should be avoided in order to decrease electromagnetic
interference caused by the rapid changes in the frequency converter
output voltage.
Where control cables must cross power cables make sure they are
arranged at an angle as near to 90 degrees as possible. Extra cables
should not be run through the ACx 600.
The cable trays shall have good electrical bonding to each other and to
the earthing electrodes. Aluminium tray systems can be used to
improve local equalizing of potential.
Below is a diagram of cable routing.
Insulation jacket
Copper wire screen
Helix of copper tape
Cable core
Inner insulation
ACT PAR FUNC DRIVE
ENTER
LOC
REM
RESET REF
ACS 600
90 °
min 500 mm (20”)
Motor cable
Power cable
Control cables
min 300 mm (12”)