Quote Originally Posted by cropwell View Post
I don't know if this helps, http://www.china-cncrouter.com//down...7282452561.pdf I have had a quick look and the only info I see about motor current is that it is set at 1.8A.

You might have to open up the box to see what board is inside to find out how to check and set driver currents.

Here's a website that might have some thing of use :-
http://www.chinacnczone.com/en/china...czone_l49.htmlf

Cheers,

Rob
Thanks for your input Rob, I have explored the two link since you kindly posted,nothing in there rings any bells unfortunately.
As said previously the controller is marked prt-e750 and I've been unable to find anything on the web pertaining to it.
The driver cards are marked TX 14207 on the etch and the driver chip is a Toshiba tb6560ahq, the spec sheet for this device has pins for high/low current so I'll have to trace out pins to the relevant switches on the board. The stepper motor windings measure only 1.1ohm, there are no markings to identify the motors so I'm unsure if the motors can handle a higher current.