IMPULSE•G+/VG+ Series 4 Technical Manual
November 2022
Page 41
3.4 Grounding
Connect the VFD's ground terminal to a common grounding point on the control panel. Use ground wiring as
specified in
, and keep the length as short as possible.
•
Ground Resistance:
•
For 230V class: 100
Ω
or less
•
For 460V class: 10
Ω
or less
•
For 575V class: 10
Ω
or less
•
Never run the VFD ground wires in common with welding machines, or other high-current electrical equipment.
•
When more than one VFD is used for the same system, ground each directly or daisy-chain to the ground pole.
Do not loop the ground wires.
Figure 3-10: VFD Grounding
Figure 3-11: Motor Grounding