Power Connection to Stepper Driver

The unit will work either from AC 50-80 V or DC 70-110 V. One of the two supply is to be connected to top two terminals. Polarity is not important.

Bottom two pairs are for the two windings A & B of the stepper motor. Polarity to be observed while connecting the motor.

Nothing was posted at the manufacturer's site because they believe that the label provides enough information. They do for me.

Do you know what type of stepping motor you have? This will determine if you have an acceptable driver and how many watts your supply should be.

The power in connection specifies the RMS AC voltage range. I believe that either 50 or 60 HZ will work fine. So you will need at least a transformer to step down your local power to this broad voltage range. You won't have to rectify this to a DC voltage but you might find that a AC/DC power supply will be easier to integrate all of the safety devices one should include.

As for the wiring between motor and driver if you have a four wire two phase bipolar motor then the wiring is very simple. Just wire each motor phase (1 & 2) to the A and B terminals. If you have instead a six wire or eight wire two phase motor then this driver will still work but I need more information from you. If your stepping motor is a three phase or five phase stepping motor then this is the wrong driver.

You already have the answers for the voltage, but now you must decide the power/current needed for your motors. This may have an effect on the power supply/ AC transformer size requited......

I think that the max peak current was 7.8 amps. Say at 100VDC that is around 780 watts. Using the peak max current means that you have some "spare" capacity, usually a good thing!

If you can give us motor details, we can help you further......

You also need to decide if you wish to use micro stepping or not and if yes, which step rate does your software support?

Thanks for the responses,

When I made the initial post it wasn't clear to me why polarity didn't matter. After giving it some thought I realized if the inputs were to a full wave rectifier it wouldn't. Sorry to be so thick but I'm not a EE and all my experience is in mobile equipment.

I described the motor in a previous post. So will not repeat it here.

The AC power supply will be a single phase multi-tap 1KVA transformer.

I don't have to microstep the motor and will probably use an Arduino for the controller. I haven't made a final decision on that yet.

Regards,

You are right, the inputs are to a full wave rectifier. That is a big transformer you have, use properly sized fuse for safety. Good luck in your endeavour.

You wrote:-

I described the motor in a previous post. So will not repeat it here.

Do you realize that this is unhelpful? You should at least post a link if you want help from us!!! Or do you expect us to search on CR4 and find it.....its not here in this blog where it should be!

I'm gone from here, fix it all yourself in the future.

AC Stepper Motor

That is the link, Andy Germany. It must have been a over sight on the part of the OP in not posting the link.

Yes it was a callous oversight to imply that we should search for the previous thread started by the OP. It does show the impulsive nature of the OP though. The OP wants us to only answer the question they present. Because this obviously is a first attempt into the realm of motion control I expect Flatwater to create many problems in this project. Probably most of the problems will be hidden and unimportant to the project. Eventually one will not make sense to Flatwater and he'll return expecting us to remember everything previously said.

I wonder what will be his response when a resonance is found? Will reversing motor direction baffle? I also wonder if there will be any positional feedback?

Andy, Redfred,

My apologies for offending your sensibilities. It was not my intention to do so. Both of you commented my previous post, but it was wrong of me to assume you would remember.

Based on my warm reception to the forum, you can safely assume I won't be bothering you in future.

Joshi,

Thanks for the help.

Best Regards to All,

Now that's weird. He comes here with a question that we do clearly help him. He can make all the callous comments he wants to but if we point them out he gets insulted and threatens to not return.

Weird!