limit speed
How do I reduce the max speed & accel. I have added the following to my printer.cfg file. The overall limits appear to have set OK but my bed mesh & Z-tilt are still trying to move too fast.
The problem is I have changed the motors to LDO 2804s thinking that they had more speed but they simply do not have the power / torque for the VC-500. So I have to limit the speeds to be able to use it at all untill I get replacement motors.
[printer]
max_velocity: 300
max_accel: 3000
[bed_mesh]
speed: 300
[z_tilt]
speed: 300
7 Replies
You try disabling performance mode in the confirmation steps?
RatOS does not mess with speeds for z_tilt and mesh as far as I know. It would use the speeds defined in Klipper and adjusted as you have done. The defaults are must slower than you have configured. I don't know of a separate setting for acceleration.
[z_tilt]
#speed: 50
The speed (in mm/s) of non-probing moves during the calibration.
The default is 50.
[bed_mesh]
#speed: 50
The speed (in mm/s) of non-probing moves during the calibration.
The default is 50.
If the problem is between movements getting ready for z_tilt and mesh, RaOS does use some internal speeds for its own macros, defined as such:
[gcode_macro RatOS]
variable_macro_travel_speed: 150 # int = xy macro travel move speed
variable_macro_travel_accel: 2000 # int = xy macro travel move acceleration In many cases it is using 60% of the defined speed. You can try a quick test adding a section in printer.cfg with lower values to see what happens.
variable_macro_travel_accel: 2000 # int = xy macro travel move acceleration In many cases it is using 60% of the defined speed. You can try a quick test adding a section in printer.cfg with lower values to see what happens.
How do I do that?
In the RatOS.cfg it had printer speed 800, travel 600, z-tilt 600 & bed mesh 600. When I added the printer limit speeds to the printer.cfg that worked but the travel & z-tilt both appear to still be using 600 as my current motors can't handle much above 300mm/s & they stall out.
Configuring RatOS Macros | RatOS
RatOS comes with a bunch of flexible predefined macro's that can be customized via variables and macro hooks.
Just put the sections abcurrie listed into printer.cfg 🙂
I did that alright. So I think it might be that my new AWD motors are binding a bit & that is preventing the gantry from moving even at 300mm/s. I have some dismantling to do now ☹️
Didn't notice until now that you picked the 2804's. They barely work without 48V and significant overcurrenting. They make very little sense on large machines, they just don't have enough torque.