[john-100]

After looking through your photos

If the HN25-150-24 powers your stepper drivers , I would use the 24V version of the relay board so the stepper driver power supply can power the relay coil

I will look for the circuit diagram of your BOB I have to find the connections that need to be connected to the relay board

once I have double checked the relay board I will post the wiring diagram to connect the BOB , relay board and spindle speed control

John

[Michael82]

After looking through your photos

If the HN25-150-24 powers your stepper drivers , I would use the 24V version of the relay board so the stepper driver power supply can power the relay coil

I will look for the circuit diagram of your BOB I have to find the connections that need to be connected to the relay board

once I have double checked the relay board I will post the wiring diagram to connect the BOB , relay board and spindle speed control

John

OK and when I get to the house in about 1 hour I will post more pics of the spindle controller

[Michael82]

After looking through your photos

If the HN25-150-24 powers your stepper drivers , I would use the 24V version of the relay board so the stepper driver power supply can power the relay coil

I will look for the circuit diagram of your BOB I have to find the connections that need to be connected to the relay board

once I have double checked the relay board I will post the wiring diagram to connect the BOB , relay board and spindle speed control

John

More pics to follow ....the black red and blue wires go to the speed pot knob the red and black wire to the right of those 3 wires go to the ac/24v on the bob , the 3rd wire from the left goes to the box labeled hn25-150_24 and the last red wire goes to the on /off switch for the spindle on the front of the box

[Michael82]

More pics to follow ....the black red and blue wires go to the speed pot knob the red and black wire to the right of those 3 wires go to the ac/24v on the bob , the 3rd wire from the left goes to the box labeled hn25-150_24 and the last red wire goes to the on /off switch for the spindle on the front of the box

Here are pictures of the hn25-150-24