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

Thanks for the guidance! I Think I will give it a try.
In theory I also Think it will work pretty good, but I will probably get some other servos. I don't like this "Dirty fix" and I will try to get the Money back from the seller.

I will just confirm that it was realy easy to use the ABS-Component and it works fine in software. I still have some issues with the servo's but will not put in more work on them since I have ordered new Omron servos instead. Thanks for the input!

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!

Got email this morning from the factory, been unable to find their e-mail earlier as the web page is in Chinese and got help to find this.

Hello Sweden
Nice to receive your message.
About the problem you mentioned,I'v talked to our engineer,he said our B2 series drivers can only support 0-10VDC
But,our B series drivers can support -10VDC to +10VDC.
And the price is the same.

Anyhow, the seller is full of shit saying that Lichuan the factory can not deliver/do not have drivers with ±10VDC.
My inquiry from Day1 early september last year even before I placed the order the spec's has been ±10VDC and not 0-10.

So, be aware of this fraudulent behavior from vipwindows168 / Fast To Buy all the same company found on Ebay/Alibaba

I am really pissed and hope that I will finally get my claim via PayPal to be in my favor asking for new drivers to specs.

We've completed our review and unfortunately are not able to decide this case in your favor.

Paypal's Buyer Protection = It sucks !!!!