Centroid Community CNC Support Forum

Muzzer wrote: ↑Sun Jan 09, 2022 8:47 am You don't need a separate input for each individual switch. For instance, Acorn only moves one axis at a time during homing, so you can connect all 3 (4?) home switches to one input. Similarly, you can parallel up the +limit and -limit inputs to 2 inputs. The VFD and drive fault lines can all feed into the Acorn and/or e-stop circuit. There are plenty of examples on this site showing you how it can be done safely using the Acorn, with or without the expansion board.

Why do you feel the need to know the individual fault status of all 3 or 4 drivers? A properly designed and implemented control system shouldn't be routinely generating driver faults, so you might focus more effort on making the system robust than having microscopic visibility of the status of every system component. The requirement for "failsafe" simply requires that the system handles faults safely and consistently. On the (hopefully) rare occasion that you get a fault, you can simply open the cabinet and see which drive is displaying a red LED etc.

rruizvial wrote: ↑Mon Feb 07, 2022 12:23 am

Muzzer wrote: ↑Sun Jan 09, 2022 8:47 am You don't need a separate input for each individual switch. For instance, Acorn only moves one axis at a time during homing, so you can connect all 3 (4?) home switches to one input. Similarly, you can parallel up the +limit and -limit inputs to 2 inputs. The VFD and drive fault lines can all feed into the Acorn and/or e-stop circuit. There are plenty of examples on this site showing you how it can be done safely using the Acorn, with or without the expansion board.

Why do you feel the need to know the individual fault status of all 3 or 4 drivers? A properly designed and implemented control system shouldn't be routinely generating driver faults, so you might focus more effort on making the system robust than having microscopic visibility of the status of every system component. The requirement for "failsafe" simply requires that the system handles faults safely and consistently. On the (hopefully) rare occasion that you get a fault, you can simply open the cabinet and see which drive is displaying a red LED etc.

I have 04 servo alarm (04 axis)

How do I transform 04 alarm signals (4 axes) from each motor driver to only 1 general axis error alarm?

martyscncgarage wrote: ↑Mon Feb 07, 2022 9:23 am

rruizvial wrote: ↑Mon Feb 07, 2022 12:23 am

Muzzer wrote: ↑Sun Jan 09, 2022 8:47 am You don't need a separate input for each individual switch. For instance, Acorn only moves one axis at a time during homing, so you can connect all 3 (4?) home switches to one input. Similarly, you can parallel up the +limit and -limit inputs to 2 inputs. The VFD and drive fault lines can all feed into the Acorn and/or e-stop circuit. There are plenty of examples on this site showing you how it can be done safely using the Acorn, with or without the expansion board.

Why do you feel the need to know the individual fault status of all 3 or 4 drivers? A properly designed and implemented control system shouldn't be routinely generating driver faults, so you might focus more effort on making the system robust than having microscopic visibility of the status of every system component. The requirement for "failsafe" simply requires that the system handles faults safely and consistently. On the (hopefully) rare occasion that you get a fault, you can simply open the cabinet and see which drive is displaying a red LED etc.

I have 04 servo alarm (04 axis)

How do I transform 04 alarm signals (4 axes) from each motor driver to only 1 general axis error alarm?

I answered this post in your other thread. Acorn 6 will have MORE I/O but it will not be as inexpensive as Acorn as you can imagine.

PLData wrote: ↑Wed Mar 09, 2022 2:41 am Acorn 6, It's super exciting, can we be allowed to see a picture of it
\PLData