Weak Motors

[Bob La Londe]

I asked John directly, and really didn't get an answer so I thought I'ld post here and see what I get.

http://www.kelinginc.net/KL23H2100-30-4B.pdf


eBay - New & used electronics, cars, apparel, collectibles, sporting goods & more at low prices

They seem to be substantially weaker than another set of 382 oz motors I got from another vendor.

I am running them on a Gecko G540 with a 48VDC power supply and current limit set at 3.48. (Got the power supply from John a while back with this in mind.)

Any suggestions? All he said was if they don't get over 80C they are fine. Not really an answer to the low torque issue.

The only real descrepency I can find is that the phase wire colors do not match his diagram. Should be no big deal. I found the coils with a meter and hooked all the motors up the same.

[zeed]

This keling motor is 7.0 mH so you need 80V to get the most out of these motors....

[Bob La Londe]

Ok, thanks. He advertises them as good for the G540 which tops at 50V. I think I'll just go back to spending a couple dollars more to buy motors from my other vendor. They have great torque at 48VDC. Anybody want to buy these?

[zeed]

Keling is ok,you just have to find right motors for your needs.
You need some 2.5mH or close motors to pair with your 48V supply and drivers

[Bob La Londe]

Originally Posted by zeed Keling is ok,you just have to find right motors for your needs. You need some 2.5mH or close motors to pair with your 48V supply and drivers

I suppose. Anyway. These motors are for sale as of a few minutes ago.

[Kelinginc]

Originally Posted by Bob La Londe I suppose. Anyway. These motors are for sale as of a few minutes ago.

You need the KL23H2100-35-4B for G540 driver. This one is rated at 3.5A
They are the best for G540 driver
if you use KL23H2100-30-4B , you need to set the current at 3.0A.

Stepper Motor

[Bob La Londe]

Originally Posted by Kelinginc You need the KL23H2100-35-4B for G540 driver. This one is rated at 3.5A They are the best for G540 driver if you use KL23H2100-30-4B , you need to set the current at 3.0A. Stepper Motor

That's not the info I got from you on Ebay messages.

For this motor, if you use 48V, 12.5A or 48V 7.3A power supply set the current at 3.5A, they will work fine we sold so many, no one have problem what kind of problem you have ? Let me know, I will help you John

Makes me not want to buy any more motors from you. Now I have to sell these as used on Ebay probably for a loss and get motors elsewhere that are designed to peak properly with my controller. On top of that I wasted a lot of time dinking with them. I did run them at 3.5 (3.48) on a 48VDC power supply and they run under powered. I contacted you first privately and did not feel like I made any progress with the problem. Now you are changing your story and saying they should be run at 3 amps.

Add on the OPs comment that they need to be run at 80VDC to get proper performance out of them and I really am done messing with them.

At the risk of sounding cliche, "This ain't my first rodeo." I'm going to go with the motors from the other vendor that I have on my other machine. I don't have time to play around "hoping" to eventually get it right.

I am sure your motors are great, but I want to get motors right for my application the first time, and deal with a vendor who gives me specs that work right the first time.

Best of luck to you.

P.S. I was seriously looking at your small router machine as my next machine, but I am not very happy with the way this worked out. You have picked up a lot of new stuff in your product lines in the last year or so that looks interesting, but...

[Bob La Londe]

Originally Posted by zeed This keling motor is 7.0 mH so you need 80V to get the most out of these motors....

Anyway, they are now listed for sale on Ebay, and there is an Ad here in the classifieds. Starting price was 1¢.

[eaglezsoar]

Originally Posted by Bob La Londe I suppose. Anyway. These motors are for sale as of a few minutes ago.

I am the person who bought the motors, thanks for the fast shipping!
I also appreciate the heads up about the data sheet not showing the correct
wiring diagram. I'm sorry you had to take a loss on the motors but I will put them to good use. I have 3 Gecko Vampire drivers that can handle the 80
Volts. Thanks again.

[Bob La Londe]

Originally Posted by eaglezsoar I am the person who bought the motors, thanks for the fast shipping! I also appreciate the heads up about the data sheet not showing the correct wiring diagram. I'm sorry you had to take a loss on the motors but I will put them to good use. I have 3 Gecko Vampire drivers that can handle the 80 Volts. Thanks again.

Glad you can use them. I used the money to offset the cost of some motors and cables from Ahren to replace them that will run just fine on 48VDC. Same motors I have on my other desktop machine. I guess I should have just used the same since I knew they would work for the application. I tried to save a couple dollars. LOL.