Grounding - Universal Robots UR3e Installation Manual

Ensure there is enough space for cables and sufficient air circulation around the Control Box.
A minimum of 50 mm space around the air intake and outlets is recommended, and consideration
should be made to avoid re-circulating air.
For more information about the heat dissipation, see
The following illustration shows the airflow.
WARNING: HOT SURFACE
Insufficient airflow, or re-circulating warm air, can cause the OEM Control Box to
overheat and shut down.

6.2.1. Grounding

The OEM Control Box casing is electrically connected to the ground pin of the power source
connector. Any conductive mounting surface must also be connected to the ground.
OEM Control Box
8.3 Control Unit Heat Dissipation on page 27.
Installation Guide