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VFD replacement

John Hebdon

John Hebdon

Joined
Jan 15, 2023
Messages
32
Likes
34
Location
San Angelo, TX
Mornin' y'all.

I am in kind of a pickle. I have a 115v Jet 1642-EVS from 2004 and the VFD (Delta VFD007S11A) finally went out. I have combed every forum on this site as well as many others and there were tons of options available for a replacement VFD. I started with a direct replacement that I found on eBay for $700. The ad said new old stock. I don't think so. The box hand written on it "big band saw". I hooked up t the lathe the exact some way the original was and when I plugged it in I heard a LOUD pop. Needless to say, that VFD was toast. This led me to Deltas website which listed the VFD4A8MS11ANSAA as the direct replacement to the VFD007S11A. I got it in just a few short days from Wolf Automation.

Plugged everything in and began the parameter settings. To my dismay not all of the parameters align for just plugging in numbers. i.e. 02-01 to 02-01. Even the parameters that appear to be the same thing are not named the same. For example. over voltage on the original VFD was enable and disable. The new VFD has a whole list of options for this setting.

Anyways. I am a pretty smart guy but I think I have met my match. I am hoping that someone has done this same swap and can give me the parameters for the new drive.

I look forward to hearing from you experts out in the field.

Thank you.

John M. Hebdon, MSgt, USAF (retired)
 
There should be only a dozen or so parameters that need to be set correctly, and they're not the complicated ones. No wave forms or ramp ups or such.

Unfortunately, the VFDs do not follow a standard sequence of numbering for parameters. You start with the list of parameters your lathe and its motor will need, then find out from the user manual what parameter number they use for each, and one at a time, plug them in. That part is pretty straightforward. The information you need is in that manual, if only you can decipher it. Half of the parameter settings you just read off the motor label, except...

The problems come in two forms. One is when your lathe/motor requires a 'fooler' setting to run correctly. On the Powermatic VFD, you have to set the motor speed at either twice or half the actual rated speed, for example (can't recall off-hand which it is). The other is when you have to set a parameter at one value until you have set the value for something else, then come back and change the first one. For example, you set the parameter for where the control comes from to the VFD itself until you've got everything else programmed, and then come back and reset that value to the lathe controls.

One other issue that I assume you have already addressed is that the wiring from the lathe controls may need to go into differently named connections than the original VFD. Since you're staying with a particular brand, hopefully this is not the case, but the VFD company engineers don't seem to consider consistency and ease a virtue.

Sometimes the VFD sellers are helpful folks and will walk you through your tasks.
 
Thank you Dean. I was aware of nearly all of the information you provided above. I have read through a lot of forums and I think I understand the basics of the VFD's. I am really holding out hoping someone has done exact same swap I have and I can just copy what they did. Fingers crossed my friend, fingers crossed. I appreciate your response. John.
 
You usually need to install a jumper on the VFD if you are using a potentiometer to increase and decrease the speed of the motor. Most of your other settings are supply voltage and output voltage, 50HZ or 60HZ, and motor horsepower, motor service factor. Most of the other settings are not needed unless you want and need ramp up and ramp down and braking etc.
 
Ok I got it going tonight. I will do a full write up tomorrow on what was needed to get this VFD configured to run my lathe. I hope I can save someone else all the trouble I went through.

More to come.

Thanks for all of the suggestions Mike and Dean. They were very helpful.
 
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