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Technical support / Re: Unwanted Stepper motor movement
« on: September 14, 2020, 10:03:14 AM »
Gary,
Your last sentence nailed it...the 0-5VDC logic input to the stepper driver. I'm probably using the same $6 Chinese stepper drivers as you and I had 24VDC going to the stepper driver inputs. Dropped in a 1K resistor into the Clock wire, got a solid 0-4VDC logic input. Jumping and jerking disappeared. Everything nice and smooth when the SSRs turn on now. My machine has been running for 1.5 hours and has completed 273 up/down cycles. It stops with 0.001" of the Home position every time. Color me happy.
I should have thought about this. Had to do the same thing on some Oriental Motor drivers. (But, you don't have to add a resistor to Anaheim Automation drivers.) Guess I should have looked at the data sheet more carefully. Oh yeah, parts are from China. No data sheets!
Anyway, thanks a lot for the help and for jogging my memory.
Neal
Your last sentence nailed it...the 0-5VDC logic input to the stepper driver. I'm probably using the same $6 Chinese stepper drivers as you and I had 24VDC going to the stepper driver inputs. Dropped in a 1K resistor into the Clock wire, got a solid 0-4VDC logic input. Jumping and jerking disappeared. Everything nice and smooth when the SSRs turn on now. My machine has been running for 1.5 hours and has completed 273 up/down cycles. It stops with 0.001" of the Home position every time. Color me happy.
I should have thought about this. Had to do the same thing on some Oriental Motor drivers. (But, you don't have to add a resistor to Anaheim Automation drivers.) Guess I should have looked at the data sheet more carefully. Oh yeah, parts are from China. No data sheets!
Anyway, thanks a lot for the help and for jogging my memory.
Neal