Analogue in out

[justwhy2003]

Hi Does anyone know if Mitsubishi provide or plan to provide an analogue extension unit that can both monitor analogue input signals and supply analogue output signals. Im planning to use an FX3G for a relatively small job that is monitoring a varying level and changing the frequency of a drive depending on the level. I dont really have the budget to buy an analogue in and out extension and have looked at the ADP and special function cards available and dont see one that does both. I was then thinking that with just the analogue input card, if there was a VSD that I could pulse to increase or decrease the frequency by say 5Hz a pulse and monitor the frequency via 4-20mA input, I could control it that way but Im not sure if there is a VSD that has this feature. Just wondering if anyone had come across anything like this? I have looked at the Alpha and could do it with an extension module but was looking to use a unit from the FX range as I would like it to be compatible with a Red Lion modular controller via standard interface cable (there isnt a cable for the Alpha as standard). Justin

[JRoss]

FX0N-3A or FX2N-5A are extension modules with one analog output and multiple analog inputs. They're the only combo modules in the FX line.

[JRoss]

Also, check out the E700 line of VFD. You can get a control module for it that let's you set speed by pulse-train. Monitoring frequency by analog is standard.

[justwhy2003]

Thanks! They look like just what I need!

[Crossbow]

Stay away from the FX0n-3A. It's ancient, and very low resolution. Since you are using FX3G, you can buy the FX3G-CNV-ADP and use the new left side adapter bus for the FX3U-3A-ADP. Or I would stick to the FX2N-5A on the right hand side.

[J. B. Jennings]

To make this less of a hassle, could the system not be configured to use the level to drive the VFD and completely bypass the controller?

[justwhy2003]

There is a bit more control involved than just level to frequency output.