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Author Topic: Mach weak output help  (Read 3852 times)

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Offline salvanosalvador

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Mach weak output help
« on: April 28, 2012, 10:40:14 AM »
I am trying to drive one stepper and I connected the circuit and tested it using the Breakout board software, the motor spins perfectly but with Mach3 the axis pul LED in the BB just have a dim light and the motor don't spin >>>>I think it is the output signal from mach so How can I change it?

Help PLEASE
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Offline Hood

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  • 25,835 25,835
  • Carnoustie, Scotland
Re: Mach weak output help
« Reply #1 on: April 28, 2012, 11:02:46 AM »
If it is the step LED on the BOB then chances are it will be dim as it will only be getting a pulse when you are trying to jog. Have you set the Steps per unit and Velocity correctly for your setup?
Hood
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Offline salvanosalvador

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Re: Mach weak output help
« Reply #2 on: April 29, 2012, 04:51:07 AM »
is this in motor tuning
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Offline Hood

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  • Carnoustie, Scotland
Re: Mach weak output help
« Reply #3 on: April 29, 2012, 05:01:27 AM »
Yes, steps per unit, Velocity and Acceleration all need set up correctly.
Hood
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Offline salvanosalvador

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Re: Mach weak output help
« Reply #4 on: April 29, 2012, 01:31:47 PM »
I really need your help

I have 1.8d stepper with a 200 s/r and a 2.8 A/phase.

I just wanna try the motor without any mechanical drive connected.

I don't know how to calculate Steps Per Unit and acceleration and velocity.


( this morning I tried to increase the velocity rate and the LED is more Bright but No effect on the Motor shaft)
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Offline Hood

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  • 25,835 25,835
  • Carnoustie, Scotland
Re: Mach weak output help
« Reply #5 on: April 29, 2012, 01:32:51 PM »
What are your drives set to regards microstepping?
Hood
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Offline salvanosalvador

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Re: Mach weak output help
« Reply #6 on: May 02, 2012, 03:01:03 PM »
my driver is full step and half step resolution only hood
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Offline Hood

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  • 25,835 25,835
  • Carnoustie, Scotland
Re: Mach weak output help
« Reply #7 on: May 02, 2012, 04:02:53 PM »
Set to half step and set steps per unit to 400 and maybe Velocity to 300 with low accel and see how you get on. Your drives sound old with only full/half stepping so you may require a wide pulse, try enabling Sherline mode and restarting Mach.
Hood
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