7.4 Installing Peripheral DevicesYASKAWA ELECTRIC TOEP C710606 09B YASKAWA AC Drive V1000 Installation & Start-Up Manual 273Peripheral Devices &Options7■ Connecting a DC ReactorEnsure the jumper between terminals +1 and +2 (terminals are jumpered for shipment) isremoved when connecting a DC reactor. The jumper must be installed if no DC reactor isused. Refer to Figure 7.5 for an example of DC reactor wiring.Figure 7.5Figure 7.5 Connecting a DC Reactor◆ Connecting a Surge ProtectorA surge protector suppresses surge voltage generated from switching an inductive load nearthe drive. Inductive loads include magnetic contactors, relays, valves, solenoids and brakes.Always use a surge protector or diode when operating with an inductive load.Note: Never connect a surge protector to the drive output.◆ Connecting a Noise Filter■ Input-Side Noise FilterDrive outputs generate noise as a result of high-speed switching. This noise flows frominside the drive back toward the power supply, possible affecting other equipment. Installinga noise filter to the input side of the drive can reduce the amount of noise flowing back intothe 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.A – Power supply C – DriveB – MCCB D – DC reactorACDR/L1+1 +2BS/L2T/L3
