Stepper motor / driver mismatch?

**lockyg** · 01-02-2016

Thanks all for your above replies, particularly JAZCNC - I love the last line, covers it all in a nutshell!

For now, I have just reduced the rapid speed between cuts, but I intend to retrofit the ctl box when I get a chance. Bearing in mind new PSU, and drivers, I may as well get a new breakout board too and simply build an entire new ctl box which I can swap in when ready. That then gives me a spare (old one) to swap in in emergency.

I will consider the new motors, but will that not involve rewiring the whole machine for the 8 wire setup? (not a big problem, but more downtime and then reduced compatibility with the old "spare" ctl box).

General linear motion setup on X and Y axis is a stationary length of (approx 10mm) timing belt down the axis with a pair of idler pullys around the motor to give the drive gear a good wrap around (180 degrees). Drive gear is approx 30mm diameter - I dont have the tooth counts to hand at the moment. Z axis is simply a leadscrew - again dont have the pitch to hand at the moment.

Its a shame the manufacturer has underspeced the ctl box, cos the actual table is built like the proverbial brick outhouse......

**JAZZCNC** · 01-02-2016

Originally Posted by lockyg

I will consider the new motors, but will that not involve rewiring the whole machine for the 8 wire setup? (not a big problem, but more downtime and then reduced compatibility with the old "spare" ctl box).

No still only needs 4 wires. Motors are 8 wires but phases are wired so only use 4 wires.

**Clive S** · 01-02-2016

I will consider the new motors, but will that not involve rewiring the whole machine for the 8 wire setup? (not a big problem, but more downtime and then reduced compatibility with the old "spare" ctl box).

The eight wire motors will be joined up making 4 wires at the motor so no prob with the wiring being changed.

edit Dean as usual beat me to it

**lockyg** · 01-02-2016

Ok, thanks - makes sense. Come to think of it, I have a pair of these 8 wire motors in the cupboard from way back when I was intending on building my own machine, before I bought what I currently have. Just need two more on the shopping list!