@eddiechilli
Hello, Savvas and I have similar setups. I have a different VFD, but maybe this will help. My VFD needs a 0-10V PWM signal for spindle speed and a 10V trigger to turn on FWD. I'm running my Duet 2 at 24V, so I need a voltage converter. I am using 2x of these:
0-10v.jpg
Which drops the voltage down to 10V and can translate a 0-24V PWM into a 0-10V PWM signal. They are wired to e0Heat and e1Heat with this config setup in RRF3.3 and use M3 for Spindle On and M5 for spindle off.
;Tools
; No tool is selected at startup
M453 ; Set to CNC mode,
M950 R1 C"e1heat+e0heat" L0:24000 Q300 ; Select Spindle On/Off,RPM & Direction (not selected).
M563 P0 S"Laser" ; Create tool 0 Laser
M563 P1 S"Spindle" R1 ; Create tool 1 with Spindle
In previous firmware versions, I used
;CNC
M950 P0 C"e0heat" Q300 ; Allocate GPOP Port 0 to Heater 0
M453 C"e1heat" Q300 R24000 T1 ; Set to CNC mode, using Tool 1, 24000 Max RPM
Which meant assigning the FWD to e0heat by turning the spindle on with M42 P0 S1 and off with M42 P0 S0. e1heat would control the spindle speed.
I have tried other voltage regulators that did not work. These work for sure. Also, make sure to switch them from 5V to 24V using the jumper. Hope that helps.