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anyone have a simple schematic for 2 dm542 drivers ?
Posted: Mon Jan 24, 2022 4:41 pm
by rob murphy
Im running a mini lathe , 2 axis , these are the chinese stepper drivers,, Originally I was going to run the drivers directly off the board, but it appears having the db25 breakout will simplify things a great deal.. .thanks in advance..
Re: anyone have a simple schematic for 2 dm542 drivers ?
Posted: Mon Jan 24, 2022 5:00 pm
by ShawnM
Just follow S14976 schematic. Do not wire up the ENABLE lines at first. Just the step and direction and test for movement. Those drives are ENABLED by default.
Re: anyone have a simple schematic for 2 dm542 drivers ?
Posted: Mon Jan 24, 2022 6:55 pm
by rob murphy
thanks soo much. let me go look at the the s14976.. do you happen to know why H4 needs a 24 v input ? im guessing thats an isolated circuit ?
Re: anyone have a simple schematic for 2 dm542 drivers ?
Posted: Mon Jan 24, 2022 8:05 pm
by ShawnM
That is the 24v for the inputs on Acorn. Without 24v none of the Acorn inputs will function. There's an input on H4 and H1 but they are connected internally on the board so just run 24 volts to either one from the Acorn power supply.
Re: anyone have a simple schematic for 2 dm542 drivers ?
Posted: Mon Jan 24, 2022 9:57 pm
by rob murphy
makes sense , thank you again..