u Connecting a Surge SuppressorA surge suppressor suppresses transient voltages generated from switching an inductive load near the drive. Inductive loadsinclude magnetic contactors, relays, valves, solenoids and brakes. Always use a surge suppressor or diode when operatingwith an inductive load.Note: Never connect a surge suppressor to the drive output.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 toward 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.B CDA R/L11234EMCCBMCCBS/L2A – Power supplyB – Input-side noise filter (Model:LNFB-oo)C – DriveD – Other control deviceFigure 8.5 Input-Side Noise Filter (Single-Phase 200 V)CDABR/L1UVWRSTEMCCBMCCBS/L2T/L3A – Power supplyB – Input-side noise filter (Model:LNFD-oo)C – DriveD – Other control deviceFigure 8.6 Input-Side Noise Filter (Three-Phase 200/400 V)Refer to EMC Filter Installation on page 236 for details about EMC filter selection and installation in order to make thedrive compliant with European standards EN61800-3 and the EMC guidelines.n Output-Side Noise FilterA noise filter on the output side of the drive reduces inductive noise and radiated noise. Figure 8.7 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.8.4 Installing Peripheral DevicesYASKAWA ELECTRIC SIEP C710606 31B YASKAWA AC Drive – J1000 Technical Manual 1698 Peripheral Devices &Optionshttp://nicontrols.com
