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Power Wiring
ANCA Motion
DS619-0-00-0019 - Rev 0
45
6
6.8.11
Motor Circuit Contactors
A motor circuit contactor may be installed if required by local codes or for safety reasons. The motor circuit
contactor isolates the motor fully from the drive to allow maintenance and form part of a safety system.
Ensure that shielding of the motor cable is continued on both sides of the motor circuit contactor as shown in
Figure 6-8.
6.8.12
Motor Power Cable Installation
Cable shielding
6.8.12.1
In order to comply with the EMC requirements and minimize affects to other equipment, motor
cables and power supply cables from line filter AMD2000 drive must be used with shields. The
cable shield minimizes electromagnetic noise which may be coupled into nearby conductors,
and the shield provides a low impedance path for common mode noise currents back to the
drive via EMC filter or drive common mode capacitors. See
Figure 6-4
which illustrates the path
of common currents. The gear tray layout and correct bonding of the shield in the cabinet is a
critical component in managing EMC problems. The following guidelines must be followed.
Cables between the inverter and motor must be shielded, and the shield grounded at both
ends.
Use motor cables with dedicated PE conductor(s). Do not use the shield as a PE.
The shield clamping surface must be free of paint
Use specifically designed shield clamps. Do not use plastic ties!
Select shield connections with low impedance in the MHz range.
Shield clamps can be with or without mechanical strain relief
Metallic components in the gear tray and cabinet must have a large surface area and
should be connected to one another with a high level of RF conductivity.
Installation of the EMC Clamp on Shielded Armature Cables
6.8.12.1.1
AMD2000 3A Drive
6.8.12.1.2
Use a saddle clamp to terminate the shielded armature cable to gear tray.
WAGO Part Number 790-116
Use the following footprint specifications for drilling into the gear tray. Drill the holes as
close as possible to the drive as shown below.
Clamp the exposed braid by turning the knurled screw and tighten to 0.5Nm to complete
the connection.