Kollmorgen Mounting
SERVO
STAR
®
SP3 Power Block
13
Non-insulated Cable Clamp
The following figures shows how cable bonding is 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).
CP3
From the drive
Terminal Strip
To Motor
Bonded to Back
Plane
Power Block Clamp and Terminal Clamp
Alternative Bonding Methods
Another option is to use cable bonding clamps (offered by Phoenix Contact and others). When
using the Phoenix Contact parts, make sure that a low impedance (high frequency) ground is
connected from the ground bus bar to the back panel using a flat braid or a copper bus bar. The
SK parts from Phoenix (SK8, SK14, & SK20) slide onto the bus bar. The cable (with exposed
shield) is inserted through the SK piece and the thumbscrew on top of the SK piece is used to
tighten the connection between the cable shield and the bus bar.
Phoenix Part Descriptions
Phoenix Contact Part #
Description
Cable Diameter Range
3025163 (Type SK8)
Shielded terminal block - for
placing the shield on bus bars.
SK8
(up to 8mm or 0.315 in)
3025176 (TypeSK14)
Shielded terminal block - for
placing the shield on bus bars.
SK14
(8mm to 14mm or 0.551 in)
3025189 (Type SK20)
Shielded terminal block - for
placing the shield on bus bars.
SK20
(14mm to 20mm or 0.787 in)
0404428 (Type AB/ServoStar)
Support for bus bar. 2 needed to
mount ground bus.
N/A
0402174 (Type NLS-CU 3/10)
Bus bar material - 10mm x 3mm
copper at varying lengths.
N/A
The next two figures represent a side and top view of the SK device that clamps down on the
shield of the cable. The use of the Phoenix SK device is an excellent method for providing a low
impedance path between the cable shield and the back panel.
www.szcxi.com | From
：
KOLLMORGEN
