Controlling 90VDC motor

Other Hardware Motors, Mechanics, Power and CNC
1

Hello all
I am working on a project where I need to be able to control two different motors via a PC. I have a welding positioner that rotates as well as tilts (one motor powers the rotation while the other powers the tilt). The welding positioner is capable of rotating at speeds from 0.4-4RPM and I would like to be able to control the speed at which the positioner rotates. As for the tilt, the tilt of the positioner only moves at one speed so I only need to be capable of controlling the power supplied to that motor so that I can tilt to a desired position.

The motor specs are:
Rotation motor: 90VDC, 1800RPM, 100W, 1.85A
Tilt motor: 90VDC, 1800RPM, 300W, 4.9A

I understand that these are powerful motors and may be complex in controlling. I have a relatively large budget to utilize in order to complete this project so I am capable of utilizing a range of Arduino/circuit boards as well as instrumentation.

I am very new to this so I do not really know where to begin. I have tried searching methods for controlling a 90VDC motor via computer but I get relatively nowhere. I have read through other posts posing similar problems but I am hoping someone can help with my unique problem.

Thanks in advance

PS I have attached a photo and video of the positioner discussed. Just imagine the silver part in the photo spinning in a circle and that the rotation I talk about controlling in the post

Welding Positioner .PNG
Welding Positioner .PNG1125×1567 330 KB

Welding Positioner .PNG
Welding Positioner .PNG1125×1567 330 KB

2

Exercise treadmills often use 90VDC motors, and there are drivers for them. Here is one place to start.

3

There are many available that allow direct interfacing with electronic controls. You might look up under "Robot welding positioners". There are a lot that allow you to interface on the logic level rather then the power level. Some companies custom make them. Without schematics etc I cannot answer your question completely.

4

One thing I will comment on - there are quite a few cheap motor drivers out there rated upto 90V.

But its usually bad news to run any electronic device at its maximum rating, I'd advise finding
a motor driver capable of 120V or more to drive a 90V motor, or an industrial unit specifically
designed for 90V motors (rather than a unit whose maximum rating happens to be 90V).