Spindle at speed - time delay

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4 years 1 month ago #252066 by tommy
Spindle at speed - time delay was created by tommy
I have configured my machine with mesa configurator, so spindle configuration is:
Code:
# Spindle # Spindle Velocity Pins net spindle-vel-cmd-rps <=  spindle.0.speed-out-rps net spindle-vel-cmd-rps-abs <= spindle.0.speed-out-rps-abs net spindle-vel-cmd-rpm <= spindle.0.speed-out net spindle-vel-cmd-rpm-abs <= spindle.0.speed-out-abs # Spindle Command Pins net spindle-on <= spindle.0.on net spindle-cw <= spindle.0.forward net spindle-ccw <= spindle.0.reverse net spindle-brake <= spindle.0.brake net spindle-revs => spindle.0.revs net spindle-at-speed => spindle.0.at-speed net spindle-vel-fb-rps => spindle.0.speed-in net spindle-index-enable => spindle.0.index-enable # Set spindle at speed signal sets spindle-at-speed true # Spindle Board Connections net spindle-on => hm2_7i95.0.pwmgen.00.enable net spindle-vel-cmd-rpm hm2_7i95.0.pwmgen.00.value setp hm2_7i95.0.pwmgen.00.scale [SPINDLE]MAX_RPM setp hm2_7i95.0.pwmgen.pwm_frequency [SPINDLE]PWM_FREQUENCY setp hm2_7i95.0.pwmgen.00.output-type [SPINDLE]SPINDLE_PWM_TYPE

As I don't have feedback from VFD when spindle is at speed, I would like to add time delay. What would be the correct way to do it?

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4 years 1 month ago #252070 by tommylight
Replied by tommylight on topic Spindle at speed - time delay
You can add a delay in gcode by using G04 Pn , where n is the time in seconds and should be 2 or more seconds over the "ramp up" time on the VFD, just to be sure.
Also this way you can edit and change it without reloading LinuxCNC and homing and ....

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4 years 1 month ago #252074 by Aciera
Replied by Aciera on topic Spindle at speed - time delay
Should you want to handle the delay outside of your gcode you could add the delay in your hal file by replacing this:

# Set spindle at speed signal
sets spindle-at-speed true

with this for a 5s delay (or change value in line 3)

loadrt timedelay count=1
addf timedelay.0 servo-thread
setp timedelay.0.on-delay 5
net spindle-on => timedelay.0.in
net spindle-timer <= timedelay.0.out
net spindle-timer => motion.spindle-at-speed

See the discussion of the above solution and other options here:
forum.linuxcnc.org/21-axis/29564-automat...tarted?start=0#61840

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4 years 1 month ago #252133 by cmorley
Replied by cmorley on topic Spindle at speed - time delay
It;s too bad we don't have a pin from motion like: waiting-for-spindle-at-speed and that would make it easy.

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