The KB drives are solid. They have been around for many years and work well.
The last one I used was for an index motor on a large lathe and it ran for
years no problems. I don't think it is fast enough for a servo.
Scott H
On Tuesday, October 20, 2020, 7:00:00 PM CDT, Dave Cole
<linuxcncro...@gmail.com> wrote:
I didn't think that we were talking about positioning.
I thought you were talking about a spindle drive.
I think it could be used as a low performance positioning drive.
You would need an opto coupler setup for the command obviously if there
is no isolation.
I'm not sure that the newer KB drives aren't isolated.
But I would probably pursue a real servo drive/motor if you want
anything with performance.
In the past few years I have implemented AC VFDs on some machines to do
positioning.
They use a relatively high ratio gearbox. They are usually in vector
mode. Those setups can last a very long time. But they aren't super
precise, but then they don't need to be.
A couple of the machines used shot pins to get precise final position.
Dave
On 10/20/2020 5:30 PM, John Dammeyer wrote:
>
>> From: Jon Elson [mailto:el...@pico-systems.com]
>> On 10/20/2020 03:19 PM, John Dammeyer wrote:
>>> I looked at their web site. (google KB Electronic DC drive). Seems like
>>> pretty nice stuff although I wonder if they would react fast
>> enough to a closed loop control. If that was even wanted. One of the
>> drives does support tachometer feedback.
>> The KB drives are SCR based, so pretty low bandwidth.
>>
>> Jon
> So perfect for treadmills or fans or conveyers or any sort of simple speed
> control with a knob. But not ideal for CNC based systems.
>
> John
>
>
>
>
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