Danaher Motion S20630, Installation Manual

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Appendix B - Regulatory Information 07/06 Danaher Motion
101 S200 Position Node with CANOpen/ DeviceNet
CAUTION
All cables used with the S200 drives should be shielded with the shields connected
to PE. Dangerous voltages, resulting from cable capacitance, exist on some cable
shields if the shields are not connected to PE ground.
Avoid Cross talk
CAUTION
To avoid the risk of cross talk, keep the motor and feedback cables away from
sensitive signal cables (i.e., telephone and intercommunication lines). Shield all
cables used with the S200 drives with the shields connected to PE.
EMC testing was performed using a single drive with standard wiring. When a machine
incorporates several drives or is designed for use in an environment requiring very low
emissions, additional steps may be necessary to reduce the overall machine emissions and/or
susceptibility. High frequency grounding of cable shields may help reduce radiated and
conducted emissions as well as protect against susceptibility to external and self-generated
noise.
High Frequency Grounding of Cable Shields
NOTE
When a cable with a separate inner foil shield and outer braided shield is used, EMC
performance may be improved by connecting the foil shield to the PE location on the
connector and removing about 10 mm (0.5 in) of the outer cable jacket close to the drive
[within 0.6 m (2 ft) of the drive] to expose the braided shield and clamping the outer braided
shield to the ground plane with a 360°-type clamp.
If a ground plane is available at the motor end of these cables, similar use of a conductive
clamp at that end to connect the shield to the ground plane may help as well. Clamping the
cable shields to PE typically reduces the level of emissions and increases the level of
immunity to interference.
Example of 360° clamping of cable shields