Advice Needed, Converting a Boxford VMC 190

[Marv2097]

Thanks m_c,


I am currently set to 16 on the drivers and it runs fine but will change this to 8 and see how it goes.

The X and Y motors are directly connected but the Z has a toothed belt, It seems to be a 1:1 ration so should be fine. I think i need to measure the pitch of the screws then I can calculate the steps as you described.

The sensors are the 3 wire type and are 10-36vdc so I will get one hooked up to some power and see what the output wire does when it reaches home.

[m_c]

If you get enough speed at 16 microsteps, then there's not really any need to change it. One thing to consider, is microsteps should never be relied on for accuracy, as the stepper position can only be guaranteed to the nearest step. While microstepping, both coils are proportionally energised, with the rotor essentially held between two magnetic fields, so can spring/float (there probably is a better word, but I'm tired!) depending on load.

Sensers will most likely be NPN with an open collector. Are there any numbers on them?
If there is, try googling it to see if there are any datasheets for them, which will confirm what they are.

[m100]

This post mentions a wiring diagram for the Boxford 190. No reponse to a PM and the user hasn't posted for quite a while.

Interested if someone can supply a wiring diagram to aid conversion of my 190 (Lenze controller type)

[Edvard_acz]

Thanks m_c
All the explanation was awesome :)