step and dir pulse problem Mach3

[dazp1976]

My stepper motor has this on it NN MOTOR 57HS7416-15-14B 80 Does that mean anything , when I did a search it didn't come back with much except nema 23, so do i order drivers for a nema 23.
Cheers

Depends on what you want to do and the motor spec. Model number not showing anything so double check you have it right.
What are it's dimensions, that may also give us a clue on it.

Personally, I never run my nema23 motors below 60vdc anymore which requires the nema34 drivers DM860T instead. The velocity you can achieve is so much better.

[JAZZCNC]

My stepper motor has this on it NN MOTOR 57HS7416-15-14B 80 Does that mean anything , when I did a search it didn't come back with much except nema 23, so do i order drivers for a nema 23.
Cheers

This is typical of Chinese machines as they fit oddball motors which you probably won't find any info about. However, doesn't really matter too much because you will only have at best 36Vdc from the PSU so any drive with a 50Vdc max rating will work for you. Because you can't tell the motor current a little trial and error will be needed on the amps but this is no big deal as they will just run hot if too high and stall easily if too low.

These will work fine for what you need and will work miles better than what you had before. But before buying it's worth checking the voltage coming from the PSU

https://www.omc-stepperonline.com/di...or-dm542t.html

[mrmacca]

This is typical of Chinese machines as they fit oddball motors which you probably won't find any info about. However, doesn't really matter too much because you will only have at best 36Vdc from the PSU so any drive with a 50Vdc max rating will work for you. Because you can't tell the motor current a little trial and error will be needed on the amps but this is no big deal as they will just run hot if too high and stall easily if too low.

These will work fine for what you need and will work miles better than what you had before. But before buying it's worth checking the voltage coming from the PSU

https://www.omc-stepperonline.com/di...or-dm542t.html

Ordered. Cheers

[dazp1976]

Ordered. Cheers

If you find that your max velocity is below what you would like, swap out the 36v for a 48v.
I'd have gone for the DM556:

https://www.omc-stepperonline.com/di...scription=true

[Kitwn]

I use DM542T drivers at 36V on a pair of 3NM NEMA23 motors to pull an 800mm wide welded steel gantry with a 2.2KW spindle on it. It's fairly weighty but will rapid at over 10/min with reasonable acceleration so they'll probably do.
However, there is always a case for spending a bit more on something over-specified for your present needs if you might want to upgrade other parts in the future. It's a balance between spend more now to save in future.

To get a bit more info on the motors you could look at the spec of similar sized motors from stepperonline and others. Measure the winding resistance of the motors you have and look for a match in both resistance and physical size. It's not a guarantee they're the same current rating but will give you somewhere to start.

[mrmacca]

Hi All,
been having a go at building onto the AXXB-E attached are some pics and would like advice as to were I have gone wrong on the stepper drives, also the 3 wires lying by the AXXB-E are from the VFD av1 grnd and +10v were do i attach these to the AXBB-E, also emergency stop and pump.
All the advice i have had up to now is much appreciated.

[JAZZCNC]

Hi All,
been having a go at building onto the AXXB-E attached are some pics and would like advice as to were I have gone wrong on the stepper drives, also the 3 wires lying by the AXXB-E are from the VFD av1 grnd and +10v were do i attach these to the AXBB-E, also emergency stop and pump.
All the advice i have had up to now is much appreciated.

Be Careful if you don't know what you are doing because you can easily damage the controller if you connect up wrong. Don't turn it on until you are 100% sure it's correct, you can't afford to use a trial and error method here because you won't get a second chance once you let out the magic smoke.

I will knock you up some simple diagrams but it will be tomorrow now, I suggest you wait rather than have a go without being sure.

[JAZZCNC]

Ok, here you go. I have broken each down into separate drawings.

On the VFD you don't need the 10V with AXBB so just remove the wire.



Edit: My drawings show Step which is Puls on your drives.

[mrmacca]

Cheers Jazz,
no would not have turned it on and still wont till im sure , thats why i asked for help lol.
Actually had another read of the manual and spotted where I have gone wrong.
Cheers M8

[Neale]

Looking at the first two images, I'm concerned about the polarity of the supply to the stepper driver. It appears to show a black wire to +ve and red to -ve, although the 24V supply to the AXBB is correct. I can't see where these wires go on the power supply.