The short may not be on the board, but on the power supply, motors, or e-stop connector
Motor Test
- Turn off the power to the board using the power slide switch at the back.
- Remove all of the motor communication (black) and power connectors (green)
- Turn on the power to the board, reset the e-stop and connect.
- Do the 2 red LED lights turn on?
- Is there power on the board?
- Are you able to connect?
- If so, turn off the board. Starting with the z-axis, plug in the communication and the power connectors. Turn on the board. Do you stay powered on? If so, repeat the process for the next motor, doing one at a time.
Power Supply Test
- Unplug the green connector from the control board and, using a multi-meter, ensure there is a constant voltage of 48 volts.
- Plug the power supply into the connector and turn on the board
- Does the power voltage remain constant or does it drop?
E-stop Test
Use a small, thin metal tool or jumper pin and short the two pins located near the relay beside the white connector.
If the red Halt LED is out and a blue LED by relay is on, the board is responding correctly and we can further test the e-stop.
Testing the E-stop
Tug gently on each of the wires in the connector and ensure they are tight.
If a wire is loose:
- Strip back a short section of the shielding,
- Loosen the small screw
- Remove any material that might be inside the connector
- Insert the exposed wire into the connector and tighten the screw
Ensure the E-stop wire colour sequence matches