u Connecting a Noise Filtern Input-Side Noise FilterDrive outputs generate noise as a result of high-speed switching. This noise flows from inside the drive back to the powersupply, possibly affecting other equipment. Installing a noise filter to the input side of the drive can reduce the amount of noiseflowing back into the power supply. This also prevents noise from entering the drive from the power supply.• Use a noise filter specifically designed for AC drives.• Install the noise filter as close as possible to the drive.CDABR/L1UVWRSTEMCCBMCCBS/L2T/L3A – Power supplyB – Input-side noise filter(model LNFD-oo)C – DriveD – Other control deviceFigure 8.16 Input-Side Noise Filter (Three-Phase 200/400 V)200 V Class and 400 V Class drive models are tested according to European standards IEC/EN 61800-5-1 and comply withEMC guidelines. Refer to EMC Guidelines Compliance on page 544 for details on EMC filter selection and installation.n Output-Side Noise FilterA noise filter on the output side of the drive reduces inductive noise and radiated noise. Figure 8.17 illustrates an example ofoutput-side noise filter wiring.NOTICE: Do not connect phase-advancing capacitors or LC/RC noise filters to the output circuits. Improper application of noise filters couldresult in damage to the drive.CDBAMR/L1MCCBS/L2T/L3U/T1V/T2W/T3123456A – Power supplyB – DriveC – Output-side noise filterD – MotorFigure 8.17 Output-Side Noise Filter• Radiated Noise: Electromagnetic waves radiated from the drive and cables create noise throughout the radio bandwidththat can affect surrounding devices.• Induced Noise: Noise generated by electromagnetic induction can affect the signal line and may cause the controller tomalfunction.Preventing Induced NoiseUse a noise filter on the output side or use shielded cables. Lay the cables at least 30 cm away from the signal line to preventinduced noise.8.5 Installing Peripheral DevicesYASKAWA SIEP YAIP1U 01C AC Drive - P1000 Technical Manual 3878 Peripheral Devices &Options
