All Axes Won't Move When Commanded - PCNC 440

Background

Your machine axes require power and control signals to work. If either of those are disrupted you can lose any or all of your axes motion. If only one motor is not working go to, One Axis Won't Move (or Only Moves in One Direction), and Other Axes Move .

Tools

• Digital multimeter

• Metric Allen Keys

• Small Flat Blade Screw Driver

Check LEDs on MX3660 Driver

Reason: Power failure to driver

1. If the stepper driver controller has an illuminated green light: It is ready and operating normally and you should continue to the next topic.

2. If the stepper driver controller has an illuminated red LED: The machine should be power cycled to try and reset the stepper driver controller or the stepper driver controller needs to be replaced.

3. If the are no lights on the stepper driver controller: Continue to Inspect your 48V supply.

Reseat the Connectors on the MX3660 and Motors

Reason: Control signals aren't reaching the electronic driver module

PCNC 440 MX3660 Fan Test

Reason: The MX3660 is malfunctioning

1. If the fan is not running, there may be a short in the driver

2. Power off the machine.

3. Remove the back panel from the machine.

4. Remove wires 200-201. Check for the fan function. If fan comes on, replace the driver. If not, continue on.

Inspect the 48v DC Power Supply

Reason: The DC power supply is malfunctioning.

1. Check for voltage between wires 200 and 201 from the power supply for 48v. If no voltage is present inspect the primary AC side of the supply. (Wires 120-100) If no voltage is present, continue on through the troubleshoot.

Inspect the F6 Fuse

Reason: The fuse have blown.

To learn how to check a fuse, see: Checking a Fuse on a Tormach Machine

If there is no power found coming to or from the fuse, inspect your wall power.

Inspect the Controller and Machine Communication

Reason: PathPilot isn’t commanding the move, there is a cable problem, or a controller problem.

1. If all power checks out, there may be a communication problem.

2. Power on the machine and take it out of reset.

3. Verify that the selected machine configuration in the bottom right corner of PathPilot is correct.

4. Select the Main tab, then, on the keyboard, press the Esc key.

5. Jog the axes and, from the PathPilot interface, examine the value displayed in their DRO fields.

   1. If the position doesn't change: There's a problem with the controller.

   2. If the position changes: There is a communication or hardware issue.