- Joined
- Sep 28, 2022
- Messages
- 179
Here is some information on another VFD conversion that I believe may be similar to what you are considering for your 10EE conversion.
I had always wanted to convert my Pratt & Whitney to a VFD setup to help quieten the machine as the old contactors and two-speed motor were a bit noisier than I like. The Pratt & Whitney is otherwise a quiet machine and is even more so after the VFD conversion.
I did this conversion with the help and advice of Mark Jacobs. I chose to use a Black Max 5 hp because I really like the smooth, quiet performance of these motors. They also appear to deliver really good power at lower speeds and stay cool. I went with a Yasakawa 10 hp which makes the machine single or three-phase. I’ll let Mark tell you about the particulars and fine points of the drive and of the components used and why.
Another thing this conversion accomplished was to get rid of the piggyback electrical box off of the back of the machine keeping the machine looking original and reducing its footprint.
Mark did a really good job of sourcing the control switches which function and look very much like the originals. I run the machine from 30 to 90 hertz. This gives me a speed range of 7 RPM to 1,500 RPM with 18 speeds in the headstock.
This has always been one of my favorite machines and this setup just made it that much sweeter. Here are a few pictures of the conversion.
I had always wanted to convert my Pratt & Whitney to a VFD setup to help quieten the machine as the old contactors and two-speed motor were a bit noisier than I like. The Pratt & Whitney is otherwise a quiet machine and is even more so after the VFD conversion.
I did this conversion with the help and advice of Mark Jacobs. I chose to use a Black Max 5 hp because I really like the smooth, quiet performance of these motors. They also appear to deliver really good power at lower speeds and stay cool. I went with a Yasakawa 10 hp which makes the machine single or three-phase. I’ll let Mark tell you about the particulars and fine points of the drive and of the components used and why.
Another thing this conversion accomplished was to get rid of the piggyback electrical box off of the back of the machine keeping the machine looking original and reducing its footprint.
Mark did a really good job of sourcing the control switches which function and look very much like the originals. I run the machine from 30 to 90 hertz. This gives me a speed range of 7 RPM to 1,500 RPM with 18 speeds in the headstock.
This has always been one of my favorite machines and this setup just made it that much sweeter. Here are a few pictures of the conversion.
