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I couldn't find a 10V DC supply try out, but I found a 50V 22microF capacitor. Connected it across VFD Out and VI and it seems to have done the trick.

On the low to mid range of rpm, the rpm...

The voltage seems to be constant when measured on a multimeter, but I read an old thread on Mach3 website which said that using on oscilloscope, the 10V from the VFD was noisy. "The +10v reference...

Is the output on G540 P7/P8 digital PWM? If yes, do I need a PWM to analog converter to convert the digital voltage to analog before sending it to the VFD?

My initial though that G540 output...

I have the pulley speed set at min 0 rpm and maximum 24,000 rpm to be in line with the spindle rpm.

I'm having trouble getting 10V PWM output from G540, Pin 7 (VFD Ground) and Pin 8 (VFD Output). The maximum voltage G540 is outputting is around 5V.

Below are my settings:
VFD = Huayang 2.2kW ...

Thanks Phomann for your reply. I think I have the VDF configured correctly, FOR = Run and VI (analog input) = 10V.

Are you saying my pump schematic (in blue) is correct? If not, can you upload a simple sketch. It'll be a lot easier for me to understand.

Can you show me how you have it configured in Mach3? I can't seem to get the PWM to control the spindle.

My connections are as follows:
To turn on/off the spindle
DCM(Com) --> G540 P12
FOR -->...

In which scenario would you use FA, FB, FC and DRV, UPF, DCM? To me they both seem to do the same thing.

Attached is a simple schematic for the two setup. If I were to go with FA, FB, FC, what...

I'm trying to connect a 24V relay and 220V pump using the multi-output, FC, on Huanyang 2.2Kw VFD. Attached is the VFD wiring diagram. I have the FA, FB, FC parameter set to 1 - Run. I can hear the...

Hi Racetech,

Did you figure out a solution to this problem?

I'm experiencing the same problem as you are. All of it, including spindle powering back up when the G540 is powered off. With the...