# RapidChange ATC: ATC for ER20 (and other) spindles

**URL:** <https://forum.avidcnc.com/t/rapidchange-atc-atc-for-er20-and-other-spindles/3002>\
**Category:** General Chat\
**Tags:** atc, mach4, er20\
**Created:** [February 25, 2024, 7:51am UTC](https://forum.avidcnc.com/t/rapidchange-atc-atc-for-er20-and-other-spindles/3002 "2024-02-25T07:51:53Z")\
**Posts on this page:** 1\
**Showing post:** 4

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**Author:** ![Bernmc](https://yyz1.discourse-cdn.com/flex027/user_avatar/forum.avidcnc.com/bernmc/32/826_2.png) [@Bernmc](https://forum.avidcnc.com/u/Bernmc)\
**Post date:** [February 26, 2024, 9:17pm UTC](https://forum.avidcnc.com/t/rapidchange-atc-atc-for-er20-and-other-spindles/3002/4 "2024-02-26T21:17:15Z")

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Winning!

[![](https://canada1.discourse-cdn.com/flex027/uploads/avidcnc/original/2X/9/9a5cfeac17dbe146942008dc65e3f766e27cacf2.jpeg "AvidCNC RapidChange ATC tool pickup and drop off test") ](https://www.youtube.com/watch?v=LqX6qronUVs)

Had to change my Delta VFD settings (01-08 and 04-12 to 2.0) and now I can get down to 1000rpm. A bit slow, but a safe speed for testing.

Emailed Avid support and they replied very quickly with some advice 👍

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