Cube
®
Installation & Startup
4-4 Belanger, Inc. * PO BOX 5470. * Northville, MI 48167-5470 * Ph (248) 349-7010 * Fax (248) 380-9681 1MANUL963
Chapter 4 Electrical Overview and Panels
Best Practice Methods
Prevent Electrical Noise
It has been our experience that electrical noise can create issues such as ghost or phantom
systems faults, and erratic communication between sensors and the Program Logic Controller
(PLC). To prevent system performance issues associated with electrical noise we require the
following wiring techniques when installing high and low-voltage utilities.
• Avoid parallel runs or close wire proximity of wiring of motor supply from VFD and any
other wiring. This includes avoiding parallel runs with other 3 phase wiring.
• Never use combined wire ways or a trough which mixes 3 phase wires with Cube® 120VAC
and/or 24VAC wiring.
• Never run 120VAC and/or 24VAC in the same conduit that houses 3 Phase wiring.
• Never bundle 120VAC and/or 24VAC wiring with any 3 Phase through wire-ties or by any
other means.
• Conduit runs and hubs that contain motor wires running from the Carriage Panel to the
motor should only contain the wires running from the Panel to the motor. These conduit
runs and hubs should not contain wires from any other circuits especially 120VAC and
24VAC control wires. The energy chain is not considered a conduit for this purpose.
• Make sure when routing the energy change (CAT Track) wiring from the bay to the
equipment room that the 3-phase wiring remains isolated from 120VAC and/or 24VAC
wiring. The 3-phase wire must be isolated in original cables or in separate conduit.
Electromagnetic Interference (EMI)
IT IS HIGHLY RECOMMENDED THAT ALL WIRING CONFORM COMPLETELY TO
THE SUGGESTIONS AND ABSOLUTES FROM THIS DOCUMENT AND THE
ELECTRICAL PRINTS.
Standard methods of routing and connecting motor wires are not sufficient for systems with
multiple VFD’s. In the event that electrical noise issues are still present in the system after
conforming to all stated wiring practices, there are ways to reduce this noise. Please contact
Belanger® Technical Support for further assistance at 248-349-7010.
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