Troubleshooting

OEM Control Box AC variant

Symptom

Possible Solution

Control Box does not turn on.

Check that the power source is wired correctly (see Power Source Wiring: AC).

Control Box turns on for a few seconds then shuts down.

Pressing the Power ON button for more than 5 seconds shuts the Control Box down. Press the button for 1-2 seconds only.

Robot performance is unstable.
  • Check the input voltage is within specifications (see Technical Specifications)
  • Check grounding (avoid ground-loops or loose screws).

OEM Control Box DC variant

Symptom

Possible Solution

Control Box does not turn on.
  • Check that the power source is wired correctly (see Power Source Wiring: DC).
  • Ensure the DC source connection polarity is correct. Reverse polarity causes permanent damage to the OEM Control Box.

Control Box turns on for a few seconds then shuts down.

Pressing the Power ON button for more than 5 seconds shuts the Control Box down.

Press the button for 1-2 seconds only.

Control Box does not turn on or the robot performance is unstable.
  • Check the DC input is within specifications in Technical Specifications.
  • Check the DC supply has enough charge to supply the initial current to the system.

For complete, in depth information about the electrical configurations, see the Electrical Interface in the UR User Manual available for download at: myur.universal-robots.com/manuals