[archer3d]

Hi I have acquired 2 of these motors and I am trying determine if I can use them for my cnc machine. They are from an industrial manufacturing plant as surplus, if anyone can provide any info on them it would be great. I searched ABB Robotics but could find nothing on these

they are ABB Robotics
Type: PS 60/4-50-P-LSS-3985
Art.no: 3 HAB 3125-1/8


thanks
archer3d

[dkirtley]

Since nobody else has chimed in...

I am not an expert and since you are asking for advise, you probably are not either unless you are just playing stump the audience.

If you are playing around with it and tinkering, they are probably fine. If you are going to try to build a day to day system that you are going to depend on, I wouldn't mess with them. I would focus on readily available motors (and any other component for that matter) that are known, documented, and most importantly replaceable. If you are just fiddling around with a system, being down and having to stop, rewire, make new motor mounts, and recalibrate a machine, it is no big deal. You really don't want to have to stop and figure out a new motor in the middle of a job with deadlines breathing down your neck and your income relying on it being up and running.

[judleroy]

You can also look at this Dynomotion | Motion Control Boards website. There system can run stepper motors, brush dc motors, and brushless motors and all closed loop. The reason I say this is if you have a motor go bad you can replace it with about any other motor you find to replace it without the trouble of buying new controllers or spending alot of time setting them up. Good luck.
Judleroy

[Al_The_Man]

You would need to do quite a bit of reverse engineering to get the specs, If they are off a robot, they are most likely to have absolute encoders, if they are fitted with actual hall effect devices for commutation, they may be able to be used with a BLDC drive?
Again, without specs, reverse engineering is needed.
Al.

[archer3d]

Thank you all for the responses. I have little information on them they are a Dc servo motor and they were running at 347vdc. The part opposite to the drive side is a brake

archer3d

[Al_The_Man]

I believe you mean DCBL they do not appear to be DC brushed?
Al.

[archer3d]

I believe you mean DCBL they do not appear to be DC brushed?
Al.

As was stated in an earlier post, quite correctly I am not an expert in any way on these, what is DCBL ? and how would i check for that?

thanks
archer3d

[Al_The_Man]

The absence of carbon brushes is usually the first give away, the power is to a 3 wire stator on a BLDC (Brushless D.C.) instead of 2 wire brushed armature in DC brushed.
Al.

[archer3d]

ok thanks I will crack the motor open and see whats inside. I will post some pics when its done


archer3d

[archer3d]

That was relatively easy and painless here are some pics there are no carbon brushes i can see

archer3d

[Al_The_Man]

DCBL = wound stator. PM rotor.
DC Brushed = wound rotor. PM stator.
Also looks like a very old type of motor. Looks like resolver and you may even have discrete Hall effect sensors for commutation?
Al.

[archer3d]

I am wondering if these are rated for 347dc power what will happen if I try to run them at a much lower voltage say 48vdc

archer3d

[Al_The_Man]

You can go lower, but not that much, you will not get any rpm to speak of.
Al.

[archer3d]

So in the long run it is looking like these are not going to be usable for my machine (nuts)

acher3d