Appendix C – Regulatory Compliance: UL and CE
103
Enclosure Mounting the Gem6K Drive
The enclosure must be properly earthed and paint must be removed from drive
mounting and RF earth bonding locations. Proper shield termination of all cables
entering and exiting the enclosure is required. The motor shield (braid) must be
fastened to the drive using the included saddle clamp or R-Clamp. The shield must
not make contact with other conductors, as this will cause common mode drive
generated PWM current to flow where not expected. The shields of all other cables
that enter or exit the enclosure must be RF bonded to the enclosure entrance point
via R-Clamp, bulkhead clamshell clamp, or other 360
°
bonding technique. This
ensures that no stray noise will enter or exit the enclosure. The next drawing
illustrates 360
°
bonding techniques.
Remove outer jacket only.
Do not cut braid.
R-Clamp
Cable
Enclosure Panel
Bulkheak
Clamshell Clamp
Bulkheak
Clamshell Clamp
Cable
Enclosure Panel
360
°
Bonding Techniques
The following clamps and clamp kits are available from Compumotor.
Clamp Type:
Compumotor Part Number:
R-Clamp
58-016050-01
R-Clamp Kit (10 per)
R CLAMP KIT
Bulkhead Clamshell Clamp
53-016131-01
Clamshell Clamp Kit (2 per)
CLAMSHELL KIT
Saddle Clamp
53-017355-01
If you use the GEM-VM50 or other screw terminal cable breakout device, be sure
to properly enclose all exposed conductors to avoid contamination and to reduce
the risk of electrostatic discharge. Limit switches and other I/O must utilize high
quality shielded cabling (85% braid coverage minimum), which must be RF earth
bonded as shown above.
Panel Mounting the Gem6K Drive
The mounting panel must be properly earthed and paint must be removed from
drive mounting locations. Gemini CE cables maintain proper RF bonding with the
drive when you insert them in the correct location and tighten the headshell
