Vfd info

Not in bed yet..just came in from building a pig cooker..controller will run 90v dc Baldor gear motor.slow to faster..forward and reverse..but want to use it to run a bodine gear motor..115v dc..way it's wired now is not right .guess I have to separate wires field and arm..mark.would be real nice to use this on pm treadmill motor..add rectifiers??..big brown device in lower right corner looks like some sort of transformer.not Capisitor.thank y'all very much.phil..

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Why would company advertise this as a vfd if it's not a vfd. 1963 terminology??
 
It does have a scbr..small blue disc at 2 o'clock to bigger blue cylinder. Thanks
 
Who said it's a vfd? The place who you bought it from? It says "variable speed drive" on the front of it, not variable frequency. Did you get this device at a garage sale?
Anyhow, it looks like the Bodine motor might work with it, I can't make out the current rating of the Baldor one.
The box still looks a bit small to run anything larger than about 1/10 horsepower
If the box is fused at 1 amp that would certainly be the case.
That small blue disc is the bridge rectifier (I recognize the Semtech name) and it looks pretty puny in terms of current rating. I would guess it may be the limiting factor.
I would change it to at least a 10 amp, 400 volt unit.
Does the variac have any specs written on it? That would probably the next limiting factor.
Mark S.
ps nice pig cooker
 
On second thought the Bodine takes 3.3 amp, maybe not..
M
 
Ken what does one need for a x axis power feed? 1/8 horse? 1/6?
I'm afraid lordbeezer's box isn't going to cut it with either of the motors he has.
Mark
 
..big brown device in lower right corner looks like some sort of transformer.not Capisitor.thank y'all very much.phil..
That device looks like it might be a large inductor (ie, choke), to help smooth out the rectified DC.
PS - took another look at the schematic. I noticed that there are + and - signs under the armature and field output terminals. So it's definitely for DC motors, eh wot?
 
Baldor draws 1.55 amps..1/7 hp...bought from a equipment co..guy said vfd and vsd.same thing..my dumb ass ...so if I replace the small blue rectifier it should hold up to the Baldor but not the bodine..thanks very much for your knowledge..Phil
 
That controller is for a DC motor....
I don't see what I would recognize as a rectifier in the picture or the circuit so it may be AC output.
The "CR1" designation on the schematic is probably a bridge rectifier, and would make DC output likely.
So, it's a variable speed drive, VSD, not a VFD. It's about the right size for a positioner or coil winder.

The box is labeled 'variable speed drive', NOT variable frequency
 
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