VFD Speed with Two Pressure Sensors

[steve3871m]

We would be using Yaskawa V1000 and Veris PX3 (4-20ma) for VFD speed to control space pressure.
But not understanding how to wire two PX3's to one drive for averaging or pressure drop between the two sensors.

[patpinet]

Have you tried there tech support number?
They are pretty good.
Ive called them a couple of time, issues as been fixed and my questions answered every time.

[gbfromsd]

Yaskawa has a simulator tool that might help. Comes up easily in a browser search for download.

[71CHOPS]

I'm not sure about the Yaskawa, but ABB's have the ability to completely stand alone and control something like an AHU, using multiple inputs and outputs.

If the Yaskawa has the same capability, you should be able to program both analogue inputs, but tell it to either use the average, or the greater or lesser number. It's amazing what a stand alone drive can accomplish these days.

[Ayazata]

We're using Yaskawa V1000's for the same reason for compressor applications. We needed to remove the control card of the compressor so we've used DWEZ functionality, allowing us to write software inside the V1000 drive.