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Examine the Activity LED

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 isn't powered on
  • The variable frequency drive (VFD) isn't powered on

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

Before You Begin

If you haven't yet done so:

  1. From the PathPilot® interface, in the RPM DRO field, type 1000 and press ENTER on the keyboard.

  2. Click FWD.

  3. 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.

  4. Locate the Machine Control Board.

Troubleshooting Steps

  • Locate the activity LED.


Is the activity LED flashing?