Build Log - Herbert

[nairepooc]

Yes I have 2 off 12v fans with metal mesh filters to blow air into the cabinet from the top with 2 side slots for evacuation of the warm air. All cables for VFD and from the motor drivers are shielded and grounded (once).
I have re-drawn the circuit based on a plan from a thread on here from the user Jazz.
The E-stop is based on this design and does not rely on the bob/software to stop things.
Just not sure about this latching business or what a pilz unit is.
Maybe someone can shed some light on this or on the updated wiring plan that will be uploaded soon.
Cheers,
Ian

[nairepooc]

This is the updated schematic;
Pointers would be welcome.


Many thanks,
Ian

[routercnc]

OK, I think that relay will latch when you hit the reset, then stay on until you hit the e-stop. This will tell the BOB to stop.

BUT ! - it looks like you are switching the mains live feed through the same 12V relay ? Don't do this. You need a contactor in-between. This is like a relay but can handle mains voltage and has purposed built contacts. It is controlled by a low voltage signal - i.e. one coming out of the safety relay.

Either revert back to your first design, or get familiar and be happy with contactors and mains control.