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Question #: 13684

Question: Signal and 5v power wiring diagram for 5v relay and USB Br about board.

Current Solution

Here is the wiring diagram for the MAch3 USB breakout board:

You will need 24 volt relays for the output on that board since that side of the board requires 24 volt power at the V+ and V-

Customer Response:
My inquiry is for the Planet CNC USB and 5v relays.
I am 99% finished with my 2 axis lathe build and this is the last item for me to conquer.
I want to control power to router, and vacuum with the BOB going through the 5V relays purchased on this site.
Thanks again.

Using the Mist, spindle or flood pins...

Buildyourcnc response:
There is an IN, GND and 5V for the digital side to engage the relay. There is an S, O and P for the power line of the device to be controlled.

The 5V and GND must be connected to the 5V and GND from the USB board. The IN is the wire from the output terminal (i.e. mist, flood, spindle).

For the power side, here are the scenarios:
- P to O connection is normally open
- P to S connection is normally closed

So, if you have the power wire that would plug into the wall, the L "black" wire from the power cord will pass through this part of the circuit (cutting the wire and one end in the P terminal and the other end in the O or S terminal). Generally, the P to O is used as this connection is normally open and when the relay is engaged, the circuit will close allowing the current to flow through that wire.


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