I just posted a new response to an old thread on Tutorials and Tips about the 3520b. If you are knowledgeable about VFDs I would be grateful if you could have a look at it and help me out.
-
May 2025 Turning Challenge: Long Neck Hollowform! (click here for details) -
Congratulations to Phil Hamel winner of the April 2025 Turning Challenge (click here for details) -
Congratulations to Dion Wisniewski for "Basketweave" being selected as Turning of the Week for 12 May, 2025 (click here for details) -
Welcome new registering member. Your username must be your real First and Last name (for example: John Doe). "Screen names" and "handles" are not allowed and your registration will be deleted if you don't use your real name. Also, do not use all caps nor all lower case.
Replacing the VFD on my lathe...
- Thread starter Wade Lippman
- Start date
Come on guys! It arrives tomorrow and I will do the best I can, but I would rather know a bit more about what I am doing.
Wade - there are a lot of variables. Each lathe manufacturer uses a specific VFD and subsequent programming. Have you spoken to the VFD manufacturer or seller?
Wade, you might get more participation if you posted a link to the original posting that you refer to. There are lots of articles about 3530b. Go to It and then copy the address at the top of your screen (Right Click and follow prompts or Press and Hold on an iPad and copy). Then paste into this post.
Powermatic 3520B VFD Replacement
About a week ago I had the VFD on my 3520B go out with a puff of smoke. I found two of the capacitors inside had blown. So I purchased and soldered on replacements but the failure also took out the controller board. In researching a replacement as I was not about to spend $600 on a 20 year old...
It is the first one on the forum
There are hundreds of settings. I am pretty much just interested in the 8 I referenced in my post.
Good luck. Hope someone here can help you......
There usually is a hand full of parameters that must be selected and programmed for a basic operation for your machine.
Horsepower, supply voltage, motor voltage, frequency, control options, Input options, etc.
You usually need to install a jumper or two depending on how you control the VFD, follow instructions or watch a few Youtube videos on the VFD you purchased.
Horsepower, supply voltage, motor voltage, frequency, control options, Input options, etc.
You usually need to install a jumper or two depending on how you control the VFD, follow instructions or watch a few Youtube videos on the VFD you purchased.
I didn't even know a VFD had capacitors in it. I thought there were many posts on adding a generic VFD on a 3520. Sure seems like it comes up a lot, did you look at the Doc Green site?