Author Topic: Power supply for Nema 23 Stepper ?  (Read 1284 times)

Offline mc

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Re: Power supply for Nema 23 Stepper ?
« Reply #50 on: December 05, 2018, 05:16:17 AM »


THANKS VERY MUCH FOR THIS ....BUT WHAT DOES IT MEAN TO SOMEONE THAT DOESNT SPEAK A WORD OF ELECTRONICENGLISH !

or just layman terms. You will have to forgive me...looking at that reminded me of so many lessons at school where I couldn't understand what the hell the teacher was talking about ! But i do appreciate the effort you made to find out the details so thank you again.
In layman's terms, you can ignore it. John just likes to reverse engineer these kind of things, and post the info for reference.

All you really need to know is how to wire things up, which is why I'll try to only post the basic information needed to get things working, as it can be too easy to confuse people with information that's not needed.

And I apologise for taking you the wrong direction with the enable circuit. I keep forgetting lots of stepper drives default to enabled, as everything I've done lately requires an enable to work.

Offline Will_D

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Re: Power supply for Nema 23 Stepper ?
« Reply #51 on: December 07, 2018, 04:40:08 AM »
With regards to the photo in post #12:

Are the Blue and Yellow ferules crimped onto the wire or are they solder or are they just slipped on and then the connector screw does the crimping. I am just about to do about 50 or 60 of these joints!
Engineer and Chemist to the NHC.ie
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Offline mc

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Re: Power supply for Nema 23 Stepper ?
« Reply #52 on: December 07, 2018, 06:06:06 AM »
With regards to the photo in post #12:

Are the Blue and Yellow ferules crimped onto the wire or are they solder or are they just slipped on and then the connector screw does the crimping. I am just about to do about 50 or 60 of these joints!

They're bootlace ferrules/cord end terminals depending on where you are.
You get proper crimping pliers that crimp them square, but you can just nip them up with some side cutters, then rely on the terminal to crimp them, however that often results in them flattened too much so you struggle to get them into terminals.
A set of crimping pliers isn't that expensive (just checked and they're about 13 on eBay just now), and they make using bootlaces far easier.

Offline John Swift

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Re: Power supply for Nema 23 Stepper ?
« Reply #53 on: December 07, 2018, 04:54:23 PM »
Hi Buell

 In the absence of instructions for the pulse generator board

I have continued with the iterative process working out the details of the pulse generator details

Now I think I have corrected my problems connecting to the NET

here are two versions of the connections between the stepper driver and pulse generator board
 using either the pulse generator  common +5V or common 0V

while the diagrams don't show all the details of the board

they show enough to predict the state of the enable switch for the motor to run
and explain why the voltage across the stepper driver input terminals  are closer to 4V instead of 5V due to the 100 ohm resistors on the pulse generator board
(thats if you measured the voltage across the pulse generator terminals before and after you connect them to the stepper driver inputs)


    John

Offline Will_D

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Re: Power supply for Nema 23 Stepper ?
« Reply #54 on: December 08, 2018, 07:00:27 AM »
They're bootlace ferrules/cord end terminals depending on where you are.
You get proper crimping pliers that crimp them square, but you can just nip them up with some side cutters, then rely on the terminal to crimp them, however that often results in them flattened too much so you struggle to get them into terminals.
A set of crimping pliers isn't that expensive (just checked and they're about 13 on eBay just now), and they make using bootlaces far easier.
Thats just the info I need, Many thanks MC
Engineer and Chemist to the NHC.ie
http://www.nationalhomebrewclub.ie/forum/