Delta VP3000 Series User Manual

Chapter 3 Electrical Wiring｜VP3000
112
3-6 RFI Jumper and Leakage Current
RFI Jumper:
1. The drive contains Varistors / MOVs that are connected from phase to phase and from phase to
ground to prevent the drive from unexpected stop or damage caused by mains surges or voltage
spikes. Because the Varistors / MOVs from phase to ground are connected to ground with the RFI
jumper, removing the RFI jumper disables the protection.
2. In models with a built-in EMC filter, the RFI jumper connects the filer capacitors to ground to form a
return path for high frequency noise in order to isolate the noise from contaminating the mains
power. Removing the RFI jumper strongly reduces the effect of the built-in EMC filter. Although a
single drive complies with the international standards for leakage current, an installation with
several drives with built-in EMC filters can trigger the RCD. Removing the RFI jumper helps, but the
EMC performance of each drive is no longer guaranteed.
Frame A1–B1 (Take Frame A1 as example shown in the following figures)
Applicable models: VFD3A0VP43ANTAA, VFD4A2VP43ANTAA, VFD5A6VP43ANTAA, VFD7A2VP43ANTAA,
VFD011VP43ANTAA, VFD013VP43ANTAA, VFD018VP43ANTAA
1. Loosen and remove the screws.
Screw torque: 8–10 kg-cm / (6.9–8.7 lb-in.) / (0.8–1.0 Nm)
Figure 3-56
2. Fasten the screws to the RFI jumper storage placement.
Screw torque: 8–10 kg-cm / (6.9–8.7 lb-in.) / (0.8–1.0 Nm)
Figure 3-57

Delta VP3000 Series Specifications

General

Brand	Delta
Model	VP3000 Series
Category	Servo Drives
Language	English