Chapter 1 IntroductionCP20001-51-5 RFI Jumper(1) In the drive there are Varistor / MOVs, which are connected from phase to phase and from phase toground, to protect the drive against mains surges or voltage spikes.Because the Varistors / MOVs from phase to ground are connected to ground via the RFI jumper, theprotection will be ineffective when the RFI jumper is removed.(2) In the models with built-in EMC filter the RFI jumper connects the filer capacitors to ground to form areturn path for high frequency noise to isolate the noise from contaminating the mains power.Removing the RFI jumper strongly reduces the effect of the built-in EMC filter.(3) Although a single drive complies with the international standards for leakage current, an installationwith several drives with built-in EMC filter can trigger the RCD. Removing the RFI jumper helps, butthe EMC performance of each drive would is no longer guaranteed.Frame A~CScrew Torque: 8~10kg-cm / [6.9~8.7 lb -in.] / [0.8~1.0 Nm]Loosen the screws and remove the MOV-PLATE. Fasten the screws back to the original position afterMOV-PLATE is removed.
