Grizzly G4003G VFD Conversion?

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raross61

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I was just wondering if anyone on here has done a VFD conversion on this machine? Also does anyone know what NEMA frame there motor is? Or a good side for NEMA frame information? I have a spare out of the machine motor, I I had a site where they list the sizes, I could maybe match my motor up to a 3 phase motor frame for a VFD conversion?
Thanks Bob in Oregon
 
Here's a metric frame chart (it's probably metric, not NEMA): http://www.electricmotorwarehouse.com/PDF/Metric_frame_chart.pdf

Do you have a 4003 currently? If so, the frame should be listed on the motor.

It's VERY easy to wire a VFD. However, some lathe functions and safety features may not work if you bypass the existing electrical box and associated relays.
 
As a starting point, this thread may be useful to you. There are a lot of similarities in modern units.

http://www.hobby-machinist.com/showthread.php/11649-PM-1236-VFD-Conversion?highlight=1236

Also, I'm not really crazy about that Huanyang VFD and I never published the final programming details because, different firmware versions of the unit exist and some of the parameters are not the same. -Didn't want to create a rats nest of trouble for folks.


Ray
 
marrtw said:
Here's a metric frame chart (it's probably metric, not NEMA): http://www.electricmotorwarehouse.com/PDF/Metric_frame_chart.pdf

Do you have a 4003 currently? If so, the frame should be listed on the motor.

It's VERY easy to wire a VFD. However, some lathe functions and safety features may not work if you bypass the existing electrical box and associated relays.
Click to expand...

Yes I have a G4003G now, and a spare motor, I will look on my spare motor, when I get a chance, I will also look at this website, and see what they have also.

Thanks Bob in Oregon
 
Just joined the forum, and have been reading back dated posts. Sorry if this is too late for your consideration.

I changed the motor on my G4003G a couple of months after purchasing the lathe. An electrician friend gave me a 2 HP 3 phase motor. It had a standard NEMA frame and bolted right on. I bought a Hitachi VFD for it. I also reconfigured the stock electrical buttons on the lathe itself to VFD more comfortably. Most notable: the industrial potentiometer for speed control.

This was the icing on the cake move to an already wonderful machine and I recommend it highly. Gearbox noise all but went away. The machine is so much quieter. Also, surface finish is much improved.

Picture 186.jpgPicture 185.jpg

Picture 185.jpg Picture 186.jpg
 
Tciplumber said:
I also reconfigured the stock electrical buttons on the lathe itself to VFD more comfortably. Most notable: the industrial potentiometer for speed control.
Click to expand...

Nice job with the controls.

Don't you miss having a jog button for those times when you can't get it to shift between gears?
 
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