Universal Robots CB3 Error Code C72A2: 1 PSU active, but we expect 2 (UR10)

Universal Robots Robot Minor System

Model: CB3 (UR3/UR5/UR10) | Code: C72A2

Applicable Systems
UR3 UR5 UR10 UR3e UR5e UR10e UR16e UR20 UR30

Symptoms

PSU was not able to deliver 48V or UR10 flash card in UR5 robot

Possible Causes

  • PSU was not able to deliver 48V or UR10 flash card in UR5 robot

Troubleshooting Steps

  1. Step 1: Check power connection between power supply and Safety Control Board and check that the flash card and robot match
    Check if the issue is resolved after this step

How to Reset

Power cycle the robot controller and perform a complete reboot sequence. If the error persists, update the software to the latest version.

Related Universal Robots Fault Codes

Source: Universal Robots Official Error Codes Directory (https://www.universal-robots.com/manuals/EN/PDF/Shared/ErrorCodes/ErrorCodes.pdf)

Category: Robot