Re: [CAD_CAM_EDM_DRO] Delagrange stepper driver board

Scott,

Yes, it is a nice looking board. I bought one of these to retrofit my Bridgeport as the seller claims it is a 10 amp stepper driver board. The 10 amps refers to the relays on the board for the spindle and coolant control. The actual drives, I could never get a straight answer to their amperage rating (after I bought it). It is not a chopper style drive system and is useless to drive a machine of any size. I put 6 amps through one axis on it and it fried and then had to fight with him to get half of my $240 back. I dont know what it would be good for. Standard chopper drives increase the voltage like ten times while traversing versus the holding power. I had it connected to the X axis which doesnt require much force to move and I couldn't get above 3 inches per minute. The ballscrew could be stopped with my hand and thats with a 3:1 reduction back to the stepper. His suggestions were: put a bunch of resistors on each axis, Use two power supplys and switch between them with M-codes in
the software, Put fans on my motors (huh).

Ron

Scott Riddle <sariddle@...> wrote:


Has anyone seen or heard anything about these driver boards? They can
be seen at www.dtllc.com. I am looking at his 4 axis boards(uni-polar
currently). He is working on a bi-polar one currently. My main
question is, this driver is a L/R type and does not adjust the
current
to the motor as it goes faster. It is fixed with resistors. Will this
give a very different performance than a chopper drive would? I
really
like the price and look of his uni-polar, 4 axis board. It is very
clean and professional looking.

Scott





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