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Check the voltage (with a multimeter) between Dir- and board ground.
It should be "high" when jogging in one direction, and "low" when jogging in the other direction. What are the exact voltage readings that you see for each direction?
If no change is noticed, the first thing that I would check would be the cable from the parallel port to the breakout board. Do all pins go "straight through"? Can you see the voltage on pin 3 of the cable change when you change jogging directions?
Hi there again SwampDonkey have a look here at this guy's series of CNC electronics he has 9 videos in his series http://www.youtube.com/watch?v=Lu0eNoP0zIg&feature=relmfu]CNC Electronics 4 - Mounting the Breakout board.wmv - YouTube but one thing to not do is daisy chain the power to the drivers, other than that it's a good basis for reference....
Ah, thanks. I think ive got it for the most part. Figuring out Mach 3 is on my plate for now. The steppers are moving VERY slowly but working. Ive toyed with the acceleration and IPM settings but they still move in slow motion. they also get really hot when left on for a while. Im sure ive got something wrong but need to hunt it down.Originally Posted by Mad Welder
Have your drivers got a dip switch to set to half power when not moving?
the keling drivers I have, also have that feature..!http://www.kelinginc.com/KL-8056D.pdf check out page 6 in the manual...
Nope, not that I can find. Are the motors supposed to get hot enough to burn your hand? Also, the motors are very slow. Much slower than ive seen others running. Ijust turned mach 3 back on and now it refuses to run without an e-stop. Any way for me to get it to ignore this? It did before but apparently changed its mind. The steppers are not on the machine, I just want to get them working before taking that step.
Edit: Weird stuff happening here. It turned the e-stop requirement back on and changed the stepper output ports on me. I was just messing with it last night and am sure they were set up correctly, now they're different. Any reason this would happen?
Hit the "Tab" key. There will be an MPG flyout. Within that flyout there will be a % of speed setting. What happens if you hit "shift" and the directional hotkey? Does it go much faster?
Steppers do get hot. They shouldnt be hot enough to burn your hand however their heat can startle you. Are they really that hot? Uncomfortable for sure. If they are really hot, your amperage setting on your driver is too high.
Yeah, thats what ive been using to test the motors. No, the very fastest it will go is still painfully slow.
Did you get the directional issue cured? It was mentioned above that most likely a step/direction pin being backwards in my experience or the stepper itself being wired up incorrectly.
Yes, I got the direction working fine. Just trying to sort out the slow motors at the moment. changing the number of steps per rev in Motor Tuning did nothing. They move at about 1/3rd of an RPM.
do they lock when powered?
So most likely they are locking. What is your velocity set to?
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