Rockwell Automation 7703E Medium Voltage SMC OEM Components - 10-15 kV - Manual (Page 30)

30 Rockwell Automation Publication 7703E-IN001E-EN-P - July 2014
Chapter 4 Control Component Installation
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 are 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-IN001M-EN-P .
• Wire earth ground to control terminal 14 of the SMC Flex control
module.
• Use shielded wire for:
• PTC Input
• Tach Input
• Ground Fault Input
• Terminate shield 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. All cores specified below are 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 Flex 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 Flex control module. The recommended cores are
TDK ZCAT2033 0930H and TDK ZCAT2035 0930 or equivalent.
Control Power Control Voltage
The SMC Flex controller will accept a control power input of 100…240V AC,
(-15 / +10%), 1 phase, 50/60 Hz. Refer to the product nameplate to verify the
control power input voltage.
Connect control power to the controller at terminals 11 and 12. The control
power requirement for the control module is 75 VA. Depending on the specific
application, additional control circuit transformer VA capacity may be required.