Moving the E-Stop button

[Aiph5u (Aiph5u (not affiliated with Onefinity))]

Hey GregZo,

additionally you could still have a big red switch that cuts power to everything, near the door, in the case of fire. The controller “estopped” mode makes sure that all motors are stopped, including spindle (safe torque off – STO), but without cutting the power to the controller, while the big red button at the door of the workshop would have the purpose to cut electricity from the entire installation, in case of fire, where potentially damaging the controller or the VFD by the sudden power cutoff would not matter, since preventing the place being burned down has a higher priority, and in order to extinguish a fire, you need to have everything quickly cut from power.

@Aiph5u

@Matticustard

I have an additional hardware E-stop separate from the software E-stop in case something REALLY goes wrong.

In fact you need both. What Ryan refers to is if there is something to abort quickly and stop all running motors, e.g. to avoid harm to humans (or animals), but without cutting power to everything. In fact VFDs with spindles running on them don’t like sudden power cut at all and can even be damaged. However what you always should have too, is an emergency switch preferably at the entrance of the room, with which you can safely cut off power on all hot lines for the entire room, for the case of fire.