Using Arduino and a PWM 0-10V converter with a SMC ITV pressure regulator

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Hi guys,

I need to use an Arduino Leonardo to control a SMC ITV1000 pressure regulator: https://static.smc.eu/pdf/ITV-G_EU.pdf

Right now, I found I need a PWM converter like this: https://www.amazon.com/NOYITO-Suitable-Interface-Switching-industrial/dp/B07BDK8QDG to use the PWM pins to provide a 0-10V signal to the SMC regulator.

The regulator has one of those ?4-core? cables (blue,brown,black,white) and so far I found this image with an example of the connections:

connectionsANALOG
connectionsANALOG1280×720 169 KB

The problem here is that I have 4 wires coming from the SMC regulator instead of only these 2 (green VI1 and black GND). I have figured out that the 4 wires are: brown is the Positive Power, blue is the Ground, white is the Input Signal and black the Output Signal.

So my idea is to connect the black Output Signal to one of the Arduino ANALOG IN pins. The blue Ground and the brown Positive Power wires go to a 24V power supply. The white Input Signal to the VOUT in the PWM converter. But I am not sure which wire to connect to the GND surrounded by the red circle in the image?

Thanks

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