Chinese 6040 stepper drives

**Jed Clampit** · 27-05-2019

john your a star
i altered the decay mode to 100% and it made a vast improvement but it still wasn't right. i then went in to mach 3 and altered the active high verses active low setting and that worked a treat.
i went back to the decay mode and tried all the different settings but the best was the 100% setting.
i am busy with other stuff over the next day or two but as soon as i get a chance i will try it by cutting a job.
will this have an effect on the distance travel or will that side of things remain the same.

thank you for your help so far

**john swift** · 27-05-2019

good to see your making progress

If I was correct in post 7 in calculating the number of micro steps as 8

"with a 200 step/rev motor
the YOC335 pulse/rev = 1600 gives you 1600/200 micro steps = 8

so you need to set the TB6560 switches S3 & S4 to 8 (both to 1) "

setting the new drive to 8 microsteps should make distance the axis moves stay the same as before

John

**Jed Clampit** · 27-05-2019

yes i set the switches to 8 but i will check the travel distance before i do a test cut.
i will get back to you and let you know how i get on

**Jed Clampit** · 29-05-2019

i have just gone to set the job up and zeroed everything and noticed the stepper motor is creeping while on standby. i run the cutting program anyway just to see how it performed and when cutting in slow areas like arcs or corners the motor is noisy as if missing steps

**Clive S** · 29-05-2019

Originally Posted by Jed Clampit

i have just gone to set the job up and zeroed everything and noticed the stepper motor is creeping while on standby. i run the cutting program anyway just to see how it performed and when cutting in slow areas like arcs or corners the motor is noisy as if missing steps

I would check thee stepper motor connections at the bob to see if they are loose it could also be EMI does it move when the spindle is off. Which stepper is it all or just one?