jtcrowder49
Plastic
- Joined
- Aug 8, 2022
Hi All,
Working on getting my new to me mill going. I had thought I had gotten this figured out but I thought about it too long and I think I confused myself. Since It will be difficult to find another motor I want to get some additional opinions from the group here before applying the power.
I have the motor pictured below. This motor was previously wired to 3 phase and the drum switch was quite complex allowing Hi and Low in FWD and in Reverse. Since I am changing to a VFD, I am trying to make sense of the motor wiring/ I expected to see 9 lugs but I have since learned this is only a 6 wire motor.
Am I correct in assuming I need to "bridge" or "short" the W1V1U1 legs and then apply the VFD output to the W2, V2, U2 legs?
Is there a preferred material for making shorting bars? Or is wire and crimp eyes good enough?
It's hard for me to tell since the other schematic is a little damaged. I am supplying a 220v to the VFD if that makes any difference.
edit: Does 2P or 4P operation make a difference for me? Does one do something the other does not?
Also edit: I have been referencing this article, but I am unclear since the voltage on the motor plate is the same for both wirings?
Working on getting my new to me mill going. I had thought I had gotten this figured out but I thought about it too long and I think I confused myself. Since It will be difficult to find another motor I want to get some additional opinions from the group here before applying the power.
I have the motor pictured below. This motor was previously wired to 3 phase and the drum switch was quite complex allowing Hi and Low in FWD and in Reverse. Since I am changing to a VFD, I am trying to make sense of the motor wiring/ I expected to see 9 lugs but I have since learned this is only a 6 wire motor.
Am I correct in assuming I need to "bridge" or "short" the W1V1U1 legs and then apply the VFD output to the W2, V2, U2 legs?
Is there a preferred material for making shorting bars? Or is wire and crimp eyes good enough?
It's hard for me to tell since the other schematic is a little damaged. I am supplying a 220v to the VFD if that makes any difference.
edit: Does 2P or 4P operation make a difference for me? Does one do something the other does not?
Also edit: I have been referencing this article, but I am unclear since the voltage on the motor plate is the same for both wirings?
Three-Wire vs. Six-Wire Three-Phase Motors - Technical Articles
Three-phase motors with three or six wires have limited options for wiring, but are easier to use and have important roles to play. Learn the difference between three- and six-wire three-phase motors for low and high voltage applications.
control.com
Attachments
Last edited: