Rockwell Automation Publication 1560F-UM001A-EN-P - June 2019 65
Installation Chapter 2
EMC Compliance
The following guidelines are provided for EMC installation compliance.
Enclosure
Install the product in a grounded metal enclosure.
Wiring
• Wire in an industrial control application can be divided into three groups:
power, control, and signal. The following recommendations for physical
separation between these groups is provided to reduce the coupling effect.
• Different wire groups should cross at 90° inside an enclosure.
• Minimum spacing between different wire groups in the same tray should
be 16 cm (6 in.).
• Wire runs outside an enclosure should be run in conduit or have shielding/
armor with equivalent attenuation.
• Different wire groups should be run in separate conduits.
• Minimum spacing between conduits containing different wire groups
should be 8 cm (3 in.).
• For additional guidelines, please refer to Wiring and Ground guidelines,
publication DRIVES-IN001
.
• Wire earth ground to control terminal 14.
• Use shielded wire for:
–PTC Input
–Tach Input
–Ground Fault Input
• Terminate shielded wires to terminal 14.
• Ground fault CT must be inside or within 3 m of metal enclosure.
• To meet produce susceptibility requirements, ferrite cores need to be
added to the communication lines. All cores specified below are the split
core type, so they can be added to existing connections.
– When using an external HIM (or DPI interface), a core should be
added to the HIM cable near the SMC-50 control module. The
recommended core is Fair-Rite no. 0431167281 or equivalent.
– When using DeviceNet, two cores need to be added to the DeviceNet
cable near the SMC-50 control module. The recommended cores are
TDK ZCAT2033 0930H and TDK ZCAT2035 0930 or equivalent.
ATTENTION: This product has been designed for Class A equipment. Use of the
product in domestic environments may cause radio interference, in which case,
the installer may need to employ additional mitigation methods.
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