Dynomotion Forum

Hi Tom, I had some urgent mills to do, so I created an alternate init file in pure open loop mode. The machine runs consistently and fast, but can do better. I got some help here too, and we made good progress. We managed to match the encoders to the motors and get good readings, without that pesky ...

DareDevil, I took a PWM output from the KFLOP (the code to multiplex it to JP7 and enable it is described by Tom Kerekes somewhere in the begging of this post). I connected this PWM output to a small board which converts PWM to 0-10 volt and then this 0-10 volts to the analog input of the VFD. Regards

Hi Tom, You were right (as usual). I changed back to CL STEP and now I can see command, position and output curves being plotted accordingly. My settings: Image 1 - step response.jpg Image 2 - Config.jpg I tried to set the encoder gain to 0.041666 because: Stepper 200ppr, encoder 1600 pulses per rev...

Hi Tom, This is the situation I talked about: I press "move" with proper speed and acceleration values. The machine moves ok and this plot is shown. Should the movement (red line from the encoder) be exactly coincident with the blue command line? If so, which parameters should I adjust? Image 1 - pr...

Hi Tom, I'm in a struggle here. In the Step Response Screen, when I click the "Move" button with proper motor configurations, the plot shows a blue curve (command) and a similar red curve (movement) which is read from the encoder. When I try extreme speed settings, the machine fails with a high pitc...

Hi Tom, I appreciate all the help. I managed to get my 3-axis stepdir router running. Now some minor issues: 1) I had to turn off the limit switch options (in the Config&Flash screen and C program) because my movement was being stopped erratically, as if my switches were being pressed (mechanical no...

Hi Tom, Regarding Spindle control: I set KFLOP to output PWM to IO44 as you directed. I use this signal to drive a converter, which drives the 0-10V input on my VFD -> spindle. It works manually. I have to recompile and run the init program to change the speed and direction (I had two IO bits from J...

Thank you very much.

I will reroute my breakout board, and will take advantage of the PWM0 mux to JP7. Very neat feature.
For some reason, I assumed all pin labels were mere suggestions. I’ll let you know the results. Thanks again.

Best Regards

Marcio

Hi, I’m starting this thread because it is kind of rare to see people working with a KFLOP only setup. No other boards. The manual indicates KFLOP JP7 as GPIO, I wired my 3 stepdir drivers to IO8 and 9 (X), IO10 and 11 (Y) and IO pins 12 and 13 for the Z axis, as directed. To this point, everything ...