First, you should check the configuration in your CNC control software and determine if the spindle control pin is correctly set. That pin will engage the relay.
The P and O position of the relay is set as Normally Open where the relay is open (open circuit, or no connection) at idle and when engaged will be closed (closed circuit, or connected). If you suspect that the relay is damaged, the recommended action would be to disconnect the spindle from the relay and operate the spindle/VFD manually using the Run and Stop buttons on the face of the VFD (until the breakout board can be replaced).
Click the link to respond:
The spindle has started on my Machine while the machine was sitting idol, I'm not sure if the relay has failed on the breakout board. Is there a way to test this?