Universal Robots e-Series Error Code C743A1: The servo drive for the external axis at index {unsigned} has entered a fault

Universal Robots Robot Major System

Model: e-Series (UR3e/UR5e/UR10e/UR16e/UR20/UR30) | Code: C743A1

Applicable Systems
UR3 UR5 UR10 UR3e UR5e UR10e UR16e UR20 UR30

Symptoms

An external axis has had a problem where the servo drive has entered a fault state

Possible Causes

  • An external axis has had a problem where the servo drive has entered a fault state

Troubleshooting Steps

  1. Step 1: Check the external axis's servo drive fault indicators for vendor-specific diagnostics
    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