Efeldman: Created page with " === Scenario === One or more axes travel at a high rate of speed, uncontrollably under any of the following circumstances: * When the user tries to jog the machine * When a fil..."

2011-09-02T20:36:28Z

Created page with " === Scenario === One or more axes travel at a high rate of speed, uncontrollably under any of the following circumstances: * When the user tries to jog the machine * When a fil..."

New page

=== Scenario ===
One or more axes travel at a high rate of speed, uncontrollably under any of the following circumstances:

* When the user tries to jog the machine
* When a file runs
* When the cnc interface is started

=== Problem ===

There is likely no feedback from the motor, or the feedback is backwards.

=== Solution ===

* Immediately press the emergency stop on the machine.
* [[Ensure feedback in setup]] for all axes, starting with the one(s) that "ran away"

If there is no feedback on only one axis:

* Inspect the rectangular cable that plugs into the motor and control board.
* If this machine is NOT an LC/LP controller, [[Verify control cable|inspect the scsi cable]]
* [[Motor cable swap|Swap the motor cables with another motor at the control board]]
* [[Motor swap|Swap the motor with another similar motor]]
* [[Contact Support]] with these results.

If there is no feedback on any axes:

* If this machine is NOT an LC/LP controller, [[Verify control cable|inspect the scsi cable]]
* [[Contact Support]] with these results.

If there is feedback on all of the axes, including the one that "ran away"

* This is an unusual circumstance that can only arise from a replaced encoder or amplifier that was not wired properly. Verify this is the case and [[Contact Support]] with this information.

[[Category:Knowledge Base]]

Runaway axis - Revision history

Efeldman: Created page with " === Scenario === One or more axes travel at a high rate of speed, uncontrollably under any of the following circumstances: * When the user tries to jog the machine * When a fil..."