Hi Gents,

I'd appreciate some advice regarding a Chinese-sourced stepper driver I've recently acquired. Here's a picture of the of the driver PCB:

(Click to enlarge)

— and this is the relevant Ebay listing showing such 'documentation' as is available for the board:

Ebay Listing

The simple stepper driver boards I've used in the past have only required me to set the Current Limit and the Stepping Fraction (this board refers to these as 'Current Settings' and 'Excitation Mode'. However, this board also includes 2 further settings designated:

(a) Torque Settings — 20%, 50%, 75%, 100% (DIP default set at 100%)

(b) Decay Mode — 0%, 25%, 50%, 100% (DIP default set at 100%)

I've done some Googling but really, I'm none the wiser regarding what these 2 settings mean in the context of this board and the purpose I have in mind. I plan to use this driver in a Steve Ward ('Kwackers' Electronic Division Control Box (Division Master clone). It will drive a motor hooked up to a small homebrew dividing head used purely for circular positioning. I don't intend to use it for rotational machining i.e circular routing or edging.

My instinct is to leave these 2 settings at their defaults and get on with the project! Can someone who knows what's what confirm that that's OK, please? Or is there some reason why is might be desirable to change these settings?

Thanks

Joe

Edited By joegib on 19/12/2012 10:05:19

Edited By joegib on 19/12/2012 10:07:26

Edited By joegib on 19/12/2012 10:08:49