Second opinion on hard limit setup
Posted: Wed Mar 24, 2021 5:54 am
I’m using the SN04-N prox switches for homing. Additionally, I have hard limit switches for over travel protection on each end of X and Y axis, and one for the upper end of the Z. My question is would it be better to just wire all of the hard limits NC contact in series to an external relay coil, so when power is interrupted it will sends a 3.3v signal to the Estop pin on the DB25?
I suppose I could skip the relay and wire them in parallel as NO contacts to the Estop input as a second option.
Or should I just tie each axises hard limits to that particular axis max travel input (i.e. motor 0 max) since I’m using the min for the homing input? I’m assuming an NO wiring method would be required for this as well.
Just looking for another opinion.
I’m making a drawing and trying to make my wiring very neat, so looking to get this all sorted without having to go back and re-arrange wires, labels, etc.
Thanks in advance!
I suppose I could skip the relay and wire them in parallel as NO contacts to the Estop input as a second option.
Or should I just tie each axises hard limits to that particular axis max travel input (i.e. motor 0 max) since I’m using the min for the homing input? I’m assuming an NO wiring method would be required for this as well.
Just looking for another opinion.
I’m making a drawing and trying to make my wiring very neat, so looking to get this all sorted without having to go back and re-arrange wires, labels, etc.
Thanks in advance!