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Inspect Wires 106 and 107 on Contactor C2

ClosedOverview/Background Information

If you want background information on this problem, go to How Spindle Power is Controlled.

ClosedWhat Steps Have I Already Taken?

You've determined that:

  • The contactor C2 is not operating properly

    ClosedWatch an example of contactor C2 not operating properly

  • The contactor C2 isn't powered on
  • The Machine Control Board is communicating with the PathPilot® controller
  • The variable frequency drive (VFD) isn't powered on
  • Ribbon cable J3 is operating properly
  • Wire 106 has voltage

Follow the Troubleshooting Steps to determine the cause of the spindle start 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.

  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 C2.

Troubleshooting Steps

  1. Locate wires 106 and 107.

  2. Gently pull wires 106 and 107 away from the contactor C2 to see if they're properly connected. If they're not, connect them.

  3. Examine wires 106 and 107 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 106 and 107 undamaged and properly installed in contactor C2?

  • Yes: This means that the contactor C2 is defective. Tormach Technical Support for guidance on how to proceed.
  • No: Repeat the troubleshooting steps — go to Spindle Won't Start.