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Inspect Wires 103 and 104 on Contactor C1

ClosedOverview/Background Information

If you want background information on this problem, go to About Power to the Machine Control Board.

ClosedWhat Steps Have I Already Taken?

You've determined that:

  • The machine doesn't come out of reset
  • The Machine Control Board doesn't have power
  • There is no power in the machine
  • With the Start button pushed, the Machine Control Board and the axes drives have power

Follow the Troubleshooting Steps to determine the cause of the reset mode failure.

Before You Begin

If you haven't yet done so:

  1. Power off the machine and the PathPilot® controller.

    1. Push in the Emergency Stop button on the operator panel, which disables movement of the axes and the spindle.
    2. From the PathPilot® interface, click Exit.
    3. Turn the Main Disconnect switch to Off on the side of the electrical cabinet.

    4. Follow correct lockout/tagout procedures.

      ClosedWatch how to lockout/tagout your machine

  2. Open the electrical cabinet door.

    WARNING! Electrocution Hazard: When servicing the machine from inside the electrical cabinet, always use caution. Points in the electrical cabinet have high voltages that can electrocute or shock you. Even after you've powered off the machine, electronic devices in the electrical cabinet may retain dangerous electrical voltages. Only qualified electrical machinery technicians should perform maintenance or troubleshooting procedures inside the electrical cabinet while power is still on.

  3. Locate the contactor C1.

Troubleshooting Steps

  1. Locate wires 103 and 104.


  2. Gently pull wires 103 and 104 away from the contactor C1 to see if they're properly connected. If they're not, connect them.

  3. Examine wires 103 and 104 for damages. If either wire is damaged, replace it.

  4. Power on the machine and the PathPilot® controller.

    1. Turn the Main Disconnect switch to ON on the right side of the electrical cabinet.
    2. Twist out the Emergency Stop button on the operator panel, which enables movement to the machine axes and the spindle.
    3. Press the Start button on the operator panel.
    4. Bring the machine out of reset and reference it.

Were wires 103 and 104 undamaged and properly installed in contactor C1?

  • Yes: This means that the contactor C1 is defective. Tormach Technical Support for guidance on how to proceed.
  • No: Repeat the troubleshooting steps — go to Machine Won't Come Out of Reset.