Simple motor wiring question (for somebody)

S.Grosvenor

Fulltime KnifeMaker
Joined
Jan 24, 2010
Messages
665
I received my 27vfd and the motor I'm using is a
Baldor 1.5hp afm3530 on a 143t frame. I got this motor from one of my customers and he can't use it because of the 3phase (hence my new vfd)

When I looked at the wiring diagram from b.metals they show the motor wires connected differently
1-7 to red
2-8 to white
and 3-9 to black.

The motor I have is connected as listed on the plate for "High Voltage"
6-9 connected
5-8 connected
4-7 connected
and
1 to black
2 to white
3 to red.
green to ground

Question is, do I leave my motor wired as it is or change it as per Beaumont Metal works diagram?

I do apologize if this has been asked before, I've been searching for over an hour without finding this particular topic.
 
I have a 1.5hp Leeson and a KBAC 27D VFD on my grinder, I used the Beaumont wiring diagram and settings on mine and it works fine. Well other than the funny noises it makes in the cold till it gets warmed up:o
 
Many 3 phase motors are capable of using 480 3 phase and that would be its high voltage. Your wiring matches the common set up for 480. While another combination would be for for its low of 220, usually 2-8-4 to black 3-6-9 to white and 6-7-1 to red. Rotation can be changed my swapping any 2 of the inputs. There should be a diagram on the cover plate for both voltages
 
The connection you use will depend on the output voltage from your VFD. The motor nameplate should have two voltage options listed and one needs to match up with the max output of your drive. The motor nameplate should have two connection diagrams. I searched online and it looks like your motor is 230/460. If the output of your VFD is 230 the motor should be connected according to the low voltage diagram.
 
Your There should be a diagram on the cover plate for both voltages
yes there is a "High Voltage" and a "Low Voltage" connection and with your explanation I now understand (cause the TAG voltage says -208-230/460
So the light bulb just flickered on the Low Voltage diagram is for the 208-230 line in
and the High Voltage is for the 460 which is how it is wired now.
Thanks for your help I now understand. (And very glad I asked)
 
Low Voltage diagram is for the 208-230 line in and the High Voltage is for the 460

That's it.

You want to wire it for the 230

Other than that, you can follow the Beaumont KMG wiring diagram and also the setup tips for the adjustments inside.

And as ib2v4u mentioned, you can swap 2 hots to reverse direction.



On the 143t frame motor, the shaft is 7/8"
It's fine if you can machine your own drive wheel, but the Beaumont ones are either 5/8" or 3/4"


I loooked up that model number, it's listed as TEAO

A TEAO enclosure on a motor means "Totally Enclosed, Air Over".

TEAO motors are designed to be used solely in the airstream of the fan or blower which they are driving. As such, they are very low cost, but of limited application.

TEAO motors are constructed with a dust-tight cover and an aerodynamic body. They rely upon the strong air flow of the fan or blower which they are driving to cool them.


You had better fun a fan and point it at the motor.
 
Last edited:
You had better fun a fan and point it at the motor.

I was wondering why it was so sleek looking, thanks for the info.

I have a big squirrel cage fan I use to blow on ME when I'm forging and can easy use if for this motor as well, since grinding and forging are never on the same day!
 
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