# Turn off fob-controlled dust collector (Supercell)

**URL:** https://forum.onefinitycnc.com/t/turn-off-fob-controlled-dust-collector-supercell/25365
**Category:** Uncategorized
**Created:** [February 15, 2024, 8:35pm UTC](https://forum.onefinitycnc.com/t/turn-off-fob-controlled-dust-collector-supercell/25365 "2024-02-15T20:35:16Z")
**Posts on this page:** 1
**Showing post:** 2

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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: [February 15, 2024, 10:56pm UTC](https://forum.onefinitycnc.com/t/turn-off-fob-controlled-dust-collector-supercell/25365/2 "2024-02-15T22:56:16Z")

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Hey Ian,

this was already discussed many times in the forum. Here I quote a bit of what I remember:

> [@Power / spindle / dust collector question](https://forum.onefinitycnc.com/t/power-spindle-dust-collector-question/22478/4):
>
> A water-cooled spindle needs a water coolant pump. **VFDs have relay outputs for this purpose** , with which the VFD switches spindle coolant pump on when the spindle runs and off after spindle is stopped. You may even program your VFD in a way to continue cooling of the spindle for a while after the spindle was stopped.
> 
> Similarly, if your VFD has enough control outputs, it can control an external relay which is connected to your dust collection system and can switch it on an off automatically.
> 
> Here you can see a circuit diagram which shows how the VFD can switch the dust collector on and off automatically:
> 
> > [@349iq2345](#):
> >
> > ![Relay_and_manual_switch_for_dust_collector_v2_image](https://us1.discourse-cdn.com/flex022/uploads/onefinitycnc/original/3X/b/f/bf216bbf9f79294cfe0b1f2ff9c663969feacd80.png)
> 
> It has an additional manual switch, so that you can still use the dust collector for other power tools at the same time, like a circular saw and others, while the VFD can switch it on and off automatically (by the CNC) at the same time.
> 
> There are however other ways to switch your dust collection on and off than a relay directly connected to the VFD control output. Big dust collection system manufacturers offer solutions where you simply put an inductive sensor contactlessly over the motor cable of a power tool and it senses if it’s on and turns dust collection on. One example is shown here: [Felder automatic start of dust extraction system](https://www.felder-group.com/en-us/shop/automatic-start~sc123774). Another is the [iVAC Pro Switch](https://www.ivacswitch.com/ivac-pro-auto-sensor/). In those cases, you would put the inductive sensor over the spindle cable, which means the VFD output cable, not the VFD input cable.

- [Dust Collection Wiring with Spindle & IoT Power Strip](https://forum.onefinitycnc.com/t/dust-collection-wiring-with-spindle-iot-power-strip/19991/3)
- [Both dust collection auto on/off (wood) and air blast auto on/off (alum/plastic)](https://forum.onefinitycnc.com/t/both-dust-collection-auto-on-off-wood-and-air-blast-auto-on-off-alum-plastic/19568/20)
- [Power / spindle / dust collector question](https://forum.onefinitycnc.com/t/power-spindle-dust-collector-question/22478)

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