Danaher Motion
Hardware Installation
22 SERVOSTAR
®
SBD-Series ST/CT Product Family
Bonding
The proper bonding of shielded cables is
imperative
for minimizing noise emissions and increasing
immunity levels of the drive system. Its effect is to reduce the impedance between the cable shield and the
back panel. Kollmorgen recommends that all shielded cables be bonded to the back panel.
Power input wiring does not require shielding (screening) if the power is fed to the cabinet (enclosure) via
metallized conduit. If the metallized conduit is used with proper high frequency grounds, bonding
technology, and recommended wire routing, then power input wire shielding will have no affect. In the
event that metallized conduit is not implemented into the system, shielded cable will be required on the
power input wires and proper bonding technologies should be implemented.
The motor and feedback cables should have the shield exposed as close to the drive as possible. This
exposed shield can be bonded to the back panel using one of the two suggested methods below:
Non-insulated Cable Clamp
The following figures shows how cable bonding can be implemented using non-insulated metallic cable
clamps. The first figure demonstrates clamping to the back panel in the vicinity of the drive. The second
shows a technique for bonding a terminal strip (for best results, it is recommended not to break the
shielding of the cable).
ST
CT
From the drive
Terminal Strip
To Motor
Bonded to Back
Plane
Sx Drive Clamp
Cx Drive Clamp
Terminal Clamp
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