King Midas mill conversion

[diy-john]

Items arrived yesterday from Zappautomation.



In box were:
3 x SY60STH88-3008 Nema 23 stepper motor
3 x PM752 Microstepping Driver
1 x SPS705
3 x R1605T3-FDID-P1 Ballnut
1 x HTD3M-9MM Timing Belts
1 x HTD3M-9MM Timing Belts
1 x HTD3M-9MM Timing Belts

Ballscrews, ballnuts, pulleys will come later. Jonathan will have a look at them, in view of machining them. Though I appreciate they are going to be quite tough to machine. (hardened..)


Thought the summer was here, and one would have the motors running in no time. But it is winter back again and the motors will not turn at all.

What I have done, is wire one of the drivers like this:
1) High voltage side (in picture, the upper set of wiring)
- GND ---> goes to power supply "GND"
- +VDC ---> goes to power supply "V+"

Then Nema 23 motor wires go into:
A+ ---> BLUE and RED/WHITE
A- ---> BLUE/WHITE and RED
B+ ---> GREEN and BLACK/WHITE
B- ---> BLACK and GREEN/WHITE

Then the Signal wires:
PUL+ ---> into PC parallel port PIN 3
DIR+ ---> into PC parallel port PIN 2

The "PA settings" (SW1 ... SW8) are:
- first four (4) are "ON"
- last four (4) are "OFF"




Think the high voltage side wiring is correct. Signals not so sure about. Is two (2) wires enough, or does one need more connected?

I have sort of verified parallel port outputs some signals, by doing a similar test as here
http://www.youtube.com/watch?v=EtX3p4HFbtc

...by running this little C-program on linux:
http://eagerfish.eu/lpt-programming-...r-ubuntu-linux

Tried turning a single motor by running EMC2 (linuxcnc). But no luck.

Have tried googling, where to connect parallel port PINs on the stepper drivers. Have found some information, but not sure one has it right. Please can someone help?

Thanks for looking