1
General Mach Discussion / Re: Mach3 + G540 + VFD(s) + spindle
« on: September 22, 2012, 12:52:49 AM »
So, I have finally everything running with one of my better VFDs (PowerFlex 70). Huanyang will go collect some dust. Once I figured out wiring, everything was relatively easy.
PowerFlex has also digital inputs with relays configurable as start/stop/fwd/reverse etc ... so I could hook up G540 digital output directly to PowerFlex without additional circuitry.
What I learned:
1) Original G540 XML file (provided by Gecko) for Mach3 is wrong. Pin dedicated to spindle has to have step bit 1, not 0. Once I figured that out, it all worked in build 22 and in build 66. So Hood was right. I saw different results, because I had these 2 builds in different folders with different XML files. One was fixed, other was not.
2) Motor tuning for "Spindle axis" does not do anything for PWM driven spindle. I just looked that up in manual. Maximum speed (in RPM) is derived from your pulley selection, ramping up/down is done in VFD.
3) It is wort to use shielded cables. I do not any interference between from spindle PWM, VFD or steppers anywhere.
Hood, thanks for help.
PowerFlex has also digital inputs with relays configurable as start/stop/fwd/reverse etc ... so I could hook up G540 digital output directly to PowerFlex without additional circuitry.
What I learned:
1) Original G540 XML file (provided by Gecko) for Mach3 is wrong. Pin dedicated to spindle has to have step bit 1, not 0. Once I figured that out, it all worked in build 22 and in build 66. So Hood was right. I saw different results, because I had these 2 builds in different folders with different XML files. One was fixed, other was not.
2) Motor tuning for "Spindle axis" does not do anything for PWM driven spindle. I just looked that up in manual. Maximum speed (in RPM) is derived from your pulley selection, ramping up/down is done in VFD.
3) It is wort to use shielded cables. I do not any interference between from spindle PWM, VFD or steppers anywhere.
Hood, thanks for help.