AM882 works with Protune - but not with the ZPA5-INT BOB

[badgerman]

Hi All,

Title covers it all really, I have been testing my AM882 / ZPA5 setup and I have a peculiar problem that I have narrowed down but not resolved.

I can control the motor with the Pro tune software and the motor moves smoothly. However, once the settings have been written to the driver and I try to run them from the ZPA board the motor jumps, jerks and stutters. It moves, in the correct direction but just like there is interference messing up the signal.

So I have put some ferrite beads on the wires, tested it in the case and out of the case even tried another ZPA5 board from my other machine and it still behaves erratically when the BOB is in control.

I wanted to call Zapp today as I am sure I am doing something obviously wrong but its a poxy bank holiday. So as I am super impatient, I thought I would try here in the hope that someone recognises my problem.

Chris

[Gary]

Email me how you have wired it up.
I should be able to get back to you today?

Are you powering the zp5A from an external 5V power supply or the USB?
If USB, my suggestion is dont.
ALso take a vid of you jogging an axis so i can see the problem.

[badgerman]

legend - im on it.

[badgerman]

ok, email on its way.

I think that anyone browsing this thread should be suitably impressed that you get a response on a bank holiday - a testament to your operation. It is greatly appreciated.

Chris

[JAZZCNC]

Might sound bit obvious but you've not just tuned motor wrong in the control software are you.?

Like Gary says without seeing wiring or what exactly it's doing it's hard to say anymore.

[badgerman]

Motor tuning is ok as I am moving the stepper perfectly with the Pro-tune software. It is only when the control board takes over does it go wrong.