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Examine the System for Power Drawbar

Overview/Background Information

The Power Drawbar is an optional accessory that enables you to change tools without a drawbar wrench. The Power Drawbar uses a pneumatic cylinder. To prevent injury, power is stopped to the variable frequency drive (VFD) when the Power Drawbar is operating. Depending on if a machine has an optional Power Drawbar installed, troubleshooting steps vary.

What Steps Have I Already Taken?

You've determined that:

• 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
• Wires 104 and 105 have voltage
• Wire 106 doesn't have voltage

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

Troubleshooting Steps

1. Unlatch and open the spindle door.
2. Compare your machine with the following images:

   • The first shows a machine with a Power Drawbar installed.

     

   • The second shows a machine with the original drawbar present.

     

3. Close and latch the spindle door.

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