C-13 ComplianceAC30V series Variable Speed DriveCABLING REQUIREMENTSRefer to “Recommended Wire Size” page C-30 for calculating wire sizes.Cable Routingdrivefiltermotorbrake resistor(noisy)(noisy)signal/controlcable(sensitive)powersupply(clean)cable acfuse or suitablecircuit breaker(RCD notrecommended)linechoke (noisy)motorcablesupplyEMCmotorchoke(noisy)filtermotoroutputexternal EMCFigure C-2 Cabling RequirementsCables are considered to be electrically sensitive, clean or noisy. You should already have planned your cable routes with respect to segregatingthese cables for EMC compliance.• Use the shortest possible motor cable lengths.• When connecting multiple motors to a single VSD, use a star junction point for motor cable connections. Use a metal box withentry and exit cable glands to maintain shield integrity.• Keep electrically noisy and sensitive cables apart.• Keep electrically noisy and sensitive parallel cable runs to a minimum. Separate parallel cable runs by at least 0.25 metres. Forruns longer than 10 meters, separation should be increased proportionally. For example if the parallel runs were 50m, then theseparation would be (50/10) x 0.25m = 1.25m.• Sensitive cables should cross noisy cables at 90°.• Never run sensitive cables close or parallel to the motor, dc link and braking chopper circuit for any distance.• Never run supply, dc link or motor cables in the same bundle as the signal/control and feedback cables, even if they arescreened.• Ensure EMC filter input and output cables are separately routed and do not couple across the filter.
