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General Mach Discussion / Re: Mach3 only sending one PWM Value HELP PLEASE!
« on: March 05, 2017, 07:42:24 PM »
On motor tuning for spindle:
Steps per = 1000
Velocity = 60
Acceleration = 1000
These are the correct settings for the SmoothStepper, changing these to other settings than this will not help (apart form the acceleration setting). The Acceleration setting of 1 will give you a very long acceleration on the spindle speed. I would also suggest setting the minimum pulley speed setting to zero. When it is not zero Mach can do some strange scaling the PWM output. Your VFD is set to a minimum speed of 1500 anyhow.
When you are monitoring the square wave signal sent form the SmoothStepper to the G540 first try S9000. This should provide a 50% duty cycle square wave. If you then enter S18000 you should have a 100% duty cycle (flat line), entering an S0 would give you a flat line of other polarity. If you get the correct duty cycle at the DB25 pin of the plug connecting to the G540 then the fault is with the G540 itself.
Steps per = 1000
Velocity = 60
Acceleration = 1000
These are the correct settings for the SmoothStepper, changing these to other settings than this will not help (apart form the acceleration setting). The Acceleration setting of 1 will give you a very long acceleration on the spindle speed. I would also suggest setting the minimum pulley speed setting to zero. When it is not zero Mach can do some strange scaling the PWM output. Your VFD is set to a minimum speed of 1500 anyhow.
When you are monitoring the square wave signal sent form the SmoothStepper to the G540 first try S9000. This should provide a 50% duty cycle square wave. If you then enter S18000 you should have a 100% duty cycle (flat line), entering an S0 would give you a flat line of other polarity. If you get the correct duty cycle at the DB25 pin of the plug connecting to the G540 then the fault is with the G540 itself.