Inverter controlled compressor fridge

I am in the process of making a fermentation fridge but have a questions about the compressor. My fridge has got a Embraco vemx 5c inverter controlled compressor and I wonder if it is possible to control the inverter through brewpi spark?
I can control On and off and it starts but at a set frequency.

This document gives a good description of the control signals.

The inverter wants to be frequency driven, with a fixed 50% duty cycle.
We currently only have PWM with a fixed frequency and variable duty cycle.

It is probably possible to create a variable frequency actuator for the firmware. This would also be good to have for some pumps. But you’ll have to use on/off control until I have time to look at implementing this.

Thank you for looking into this.