# Huanyang VFD to Controller

**URL:** <https://forum.onefinitycnc.com/t/huanyang-vfd-to-controller/8589>\
**Category:** Troubleshooting (X35/X50)\
**Created:** [October 30, 2021, 2:39am UTC](https://forum.onefinitycnc.com/t/huanyang-vfd-to-controller/8589 "2021-10-30T02:39:25Z")\
**Posts on this page:** 1\
**Showing post:** 28

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**Author:** ![349iq2345](https://avatars.discourse-cdn.com/v4/letter/3/bb73d2/32.png) [@349iq2345](https://forum.onefinitycnc.com/u/349iq2345)\
**Post date:** [November 7, 2021, 8:52pm UTC](https://forum.onefinitycnc.com/t/huanyang-vfd-to-controller/8589/28 "2021-11-07T20:52:59Z")

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> [@xbmods](#):
>
> as this model has a control knob the setting for manual speed F002 is 3.

Ah okay, this one has a potentiometer on the front panel.

At this point I would already have connected a RS-485 diagnosis device or an oscilloscope. If you have neither, I assume you want to check the VFD on another Controller/Buildbotics/Raspi or the Onefinity Controller with an other VFD…

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