G540 > 0-10v > VFD > Spindle Speed Wobbles
I have a G540 all wired up and working connected to a VFD, PWM freq set to 50hz and 5% and mach3 calibrated to issue the correct speed via M3 commands.
Voltage is feed to the G540 using a 7812 regulator (user manual states 12v is allowed) and as expected input reference voltage is stable.
The problem I´m seeing is that the motor speed display at the VFD wobbles about 100RPM and I see this replicated at the true speed from the index pulse in mach3.
Is there a way to smooth this?
When I did my own analog PWM to 0-10v converter I just increased the frequency and the wobbling was gone or was less than 5rpm.
Any idea would be appreciated. Thanks!
Pablo
● Distribuidor Syil en Argentina ● "www.syil.com.ar" ●