# HY VFD setup and program for water cooled spindle 110v

**URL:** <https://forum.onefinitycnc.com/t/hy-vfd-setup-and-program-for-water-cooled-spindle-110v/11157>\
**Category:** Troubleshooting (X35/X50)\
**Created:** [February 12, 2022, 8:23pm UTC](https://forum.onefinitycnc.com/t/hy-vfd-setup-and-program-for-water-cooled-spindle-110v/11157 "2022-02-12T20:23:56Z")\
**Posts on this page:** 1\
**Showing post:** 10

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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:** [May 1, 2022, 9:13pm UTC](https://forum.onefinitycnc.com/t/hy-vfd-setup-and-program-for-water-cooled-spindle-110v/11157/10 "2022-05-01T21:13:59Z")

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Hey Jay,

> [@Grindingaway](#):
>
> The J1 pin is listed as NPN and PNP on my vfd.  
> I tried both positions on J1 and the rpm was lower on PNP than NPN, and no control using the dial.  
> I see J2 is VO and AO…

then you have another model or another revision than the VFD referred here. **What does your VFD manual say about enabling front potentiometer?**

Also usually people tell which VFD model they have when they search for help

EDIT: The original poster opened a new thread and the problem was solved here:

[Speed control dial does nothing on VFD (SOLVED)](https://forum.onefinitycnc.com/t/speed-control-dial-does-nothing-on-vfd-solved/12831/)

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