Super X1 conversion - motor stalling

[bruce_miranda]

I have my motors connected in parallel so all the current switches are kept OFF to supply full current. I went for a 10 microstep configuration and that means putting DIP 6 and 7 ON and everything else OFF.

There should be no squeal on idle, check that you have a full 5V coming from the parallel port else go for the USB powered Active LOW configuration because the MSD542 is already opto isolated but needs a good voltage to drive them. Most of my problems were due to the fact that the laptop parallel port was 3.3V.

In the end the wiring diagram from Motion was correct as well although it was opposite to what others have used here.

Because I have the Metric X1 the tuning values for X and Y were 1000 and Z was 1333.33 (with 10 microsteps).

[Daznc]

Ah thanks very much, i did wonder about the wiring diagram and it has made me think but thats better knowing someone else has used it!

When you say Full 5v from parallel port do you mean check voltage on pins that i am using with a multimeter then? Although its a desktop pc with only Mach 3 on it That could be the issue, process of elimination i suppose!

I am cnc'n a X2 but need to get the mechanical side of things ordered up next, will get the electronic side of things squeaky first!

Thanks for your advice.

Darryll

[bruce_miranda]

Use the tools from http://www.beyondlogic.org/pardebug/pdebug.htm and enable a pin and then measure the voltage of your parallel port output on your PC. It should be as close to 5V as possible.

I believe squealing motors may also be because your PSU or driver is limiting the current being supplied to the motors. So something to check.