vacon • 12
Filter types
Local contacts: https://www.danfoss.com/en/contact-us/contacts-list/
Installation recommendations:
The motor cable must be kept as short as possible both inside and outside the enclosure. This
means that the optimum location for the drive is close to the driven motor in wall mounted units or
close to the cable conduit hole in enclosed units.
Separate the supply cable and the motor cable by at least 20 cm (8 in). If it is not possible to achieve
spatial separation, use a separator shield, which must be solidly and multiply grounded. The cable
from the filter to the drive must be shielded. The grounding must be done through a large area.
If several drives are used, check if it is feasible to use one common filter for all drives. In that case,
additional filtering of the drives is unnecessary. The cable between the filter and the drives should
be kept as short as possible. This usually means, that the drives and filter are mounted adjacent to
one another.
Ground the filter over a large surface to the mounting plate or the back of the enclosure. If the plate
is varnished, remove the varnish to ensure a good electrical connection at the screw locations.
All metal parts of the enclosure must be connected to one another with low impedance, large area
cables. The door must be grounded through short flexible leads to the frame of the enclosure
Cross the cables at the right angle (90°)
Connect all unused poles of all cables to the ground
