Use 0-10V + dir on 7i77 instead of +-10V out

Is this the manual of yours driver?

dl.dropboxusercontent.com/u/19663270/Lic...struction%20Book.pdf

Yes,

It clearly shows bipolar function for AI3 input, but only 0-10V is possible.

Cheers,
Bengt

tecno wrote: It clearly shows bipolar function for AI3 input, but only 0-10V is possible.

Yes, it does, doesn't it ?

I assume that you had set Pr1.28 to 3 and that the 0V reference was wired correctly?

and that the 0V reference was wired correctly?

Please clarify what you mean, plus/minus 10VDC does not have any 0V reference.

Trying to test AI3 input with 1.5V battery that I normally do to test ±10VDC drivers with to verify CW/CCW rotation.

tecno wrote: and that the 0V reference was wired correctly?
Please clarify what you mean, plus/minus 10VDC does not have any 0V reference.

You can't have any potential _difference_ without a reference.

The wiring diagram near the top of page 16 shows the +/- 10V 0V reference wire connected to AI3-. This is what I am referring to. I am not expecting to find that this isn't how it was wired.

The top shows how it works today = 0-10VDC

The drawing below shows how to connect plus/minus 10VDC and this does NOT work, rotation only ONE way!