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General Mach Discussion / delay in PWM pulse (LaserMode)
« on: January 14, 2013, 03:18:00 PM »
hi, i've made new machine: Laser CNC
but have a problem with pwm, it's running in LaserMode and PWM spindle control(at500hz), i've made a circuite with microcontroller to convert it's frequency to 30khz(as mentioned in PSU chineeeeeeees DATA*********) and using e1p1-e1p0 to firing that (as Tweakie.CNC noted in other threads) i'm using versiong v3.043.066 (my older version had problem with instant on/off of output1), there is no problem and duty cycle changes with speed, but at the begin of a cut it has delay that cause the shape can't be cut at about 14mm of the start of that, in otherwords the head moves (and output1 is ON without no problem) but PWM signal doesn't act until passing about 14mm, is there any problem with mach or my settings??
thanks of any reply
but have a problem with pwm, it's running in LaserMode and PWM spindle control(at500hz), i've made a circuite with microcontroller to convert it's frequency to 30khz(as mentioned in PSU chineeeeeeees DATA*********) and using e1p1-e1p0 to firing that (as Tweakie.CNC noted in other threads) i'm using versiong v3.043.066 (my older version had problem with instant on/off of output1), there is no problem and duty cycle changes with speed, but at the begin of a cut it has delay that cause the shape can't be cut at about 14mm of the start of that, in otherwords the head moves (and output1 is ON without no problem) but PWM signal doesn't act until passing about 14mm, is there any problem with mach or my settings??
thanks of any reply