Rockwell Automation 150 SMC-Flex User Manual - Manual (Page 44)

2-14 Installation
Electromagnetic Compatibility (EMC)
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-IN001A-EN-P.
Additional Requirements
• If linear acceleration is used, a separate conduit or wire way
should be used for the tachometer leads.
• Wire earth ground to control terminal 14.
• Use shielded wire for PTC, Tachometer, and ground fault input.
• Terminate shielded wires to terminal 14.
• Ground fault CT must be inside or within 3 m of metal enclosure.
To meet product susceptibility requirements, ferrite cores need to be
added to the communication lines. When using an external HIM (or
DPI interface), a core should be added to the HIM cable near the
SMC-Flex control module. The recommended core is Fair-Rite
no. 0431167281 or equivalent. When using a DeviceNet circuit, two
cores need to be added to the DeviceNet cable near the SMC-Flex
control module. The recommended cores are TDK ZCAT2023 0930H
and TDK ZCAT2035 0930 or equivalent. All cores specified are the
split type cores and can be added to existing connections.
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.