AKD-C Installation | 9 Electrical Installation
9.3 EMI Noise Reduction
CAUTION
Electromagnetic Fields
Electromagnetic radiation may, by acting on electrically conductive mater-
ials, lead to potential hazardous danger (warming, loss of implants).
Work on the electrical installation may only be performed by trained
and qualified personnel, in compliance with the regulations for safety at
work, and only with switched off mains supply, and secured against
restart.
Grounding, equipotential bonding and radiation-reducing shields may
not be removed.
9.3.1 Recommendations for EMI noise reduction
The following guidelines will help you to reduce problems with electrical noise in your applic-
ation.
Ensure good connections between the cabinet components.
Connect the back panel and cabinet door to the cabinet body using several conductive
braids. Never rely on hinges or mounting bolts for ground connections. Provide an elec-
trical connection across the entire back surface of the AKD-C panel. Electrically-con-
ductive panels such as aluminum or galvanized steel are preferred. For painted and other
coated metal panels, remove all coating behind the drive.
Ensure good ground connection.
Connect from cabinet to proper earth ground. Ground leads should be the same gauge as
the leads to main power or one gauge smaller.
Use Kollmorgen cables.
Experience has shown that customers who use Kollmorgen’s cables have far fewer prob-
lems than customers who build cables.
Route power and control cables separately, Kollmorgenrecommends a distance of at
least 200 mm to improve interference immunity.
Ground the shielding at both ends.
Ground all shielding with large areas (low impedance), with metalized connector housings
or shield connection clamps wherever possible. For cables entering a cabinet, connect
shields on all 360° of the cable. Never connect a simple "pigtail".
Splice cables properly.
If you need to divide cables, use connectors with metal backshells. Ensure that both
shells connect along the full 360° of the shields. No portion of the cabling should be
unshielded. Never divide a cable across a terminal stripe
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Kollmorgen | kdn.kollmorgen.com | February 2018
