Centroid Community CNC Support Forum

How is the 5vdc supplied to the 8 relay board?
Is it through the ribbon cable?

Every Acorn wiring diagram with the newer ribbon cable design I've seen has the 5vdc terminal on the power supply unused.
Does the Acorn have a DC/DC convertor to take the 24 to 5?

On the acorn schematic, look at connector H10 which is where the relay ribbon connects. The bottom terminal is 5 volts, yes there is a 24 to 5 volt regulator on board.

Thanks for clarifying that.
The earlier 8 relay boards had a separate wire to run to the P/S.

I have the earlier 8 relay board, connected to an Acorn Rev-2. To get 5vdc to the relay board, I used a LM2596 converter to lower the 24vdc to 5vdc.