I have an occasional problem and I am not sure where the source lies. Sometimes, during linking moves (rapid movement) one or more of my axes will stall. I am running stepper motors but the way they are currently set up is at least %30 lower than what they are capable of. I can rapid the machine back and forth all day, and all other rapid movements in my programs never cause an issue, but linking moves specifically have caused my steppers to stall. The only way I have been able to fix this is to have Fusion 360 output rapid movements as feedrate moves and use an extremely low feedrate (like 15 ipm). For reference, the axes are currently set to a max of 80 ipm but can easily go upwards of 120 without stalling or losing steps. I run programs where my cutting feedrate is upwards of 40 ipm, but then a 20 ipm linking move stalls the axis. Has anyone else run into an issue like this?
Stalls during linking moves
- Thread starter ryand
- Start date
zombieengineer
ZombieEngineer
@ryand
It sounds like stepper motor "mid-band" resonance is killing your system. The system starts a long rapid and sudden stops dead.
What stepper motor drivers are you using? I would be very surprised if this is happening on a system with either Gecko or Leadshine drivers.
I have encountered this on my Sherline mill and dealt with it by using a different stepper motor driver. Using the exact same stepper motors, power supply, no other mechanical changes.
For reference the stall on my system was happening around 3 to 5 revs/second (stepper motor shaft), currently I can run as high as 30 revs/second (1500 RPM).
It sounds like stepper motor "mid-band" resonance is killing your system. The system starts a long rapid and sudden stops dead.
What stepper motor drivers are you using? I would be very surprised if this is happening on a system with either Gecko or Leadshine drivers.
I have encountered this on my Sherline mill and dealt with it by using a different stepper motor driver. Using the exact same stepper motors, power supply, no other mechanical changes.
For reference the stall on my system was happening around 3 to 5 revs/second (stepper motor shaft), currently I can run as high as 30 revs/second (1500 RPM).