Universal Robots e-Series Error Code C283A55: Maximum Joint Speed of joint {unsigned} in Reduced Mode is invalid

Universal Robots Robot Minor Motion

Model: e-Series (UR3e/UR5e/UR10e/UR16e/UR20/UR30) | Code: C283A55

Applicable Systems

UR3 UR5 UR10 UR3e UR5e UR10e UR16e UR20 UR30

Symptoms

Maximum Joint Speed of joint ? in Reduced Mode is invalid

Step 1: Ensure the Reduced Mode Limit is less than or equal to the Normal Mode Limit.
Check if the issue is resolved after this step

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

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

Category: Robot

Published: 2026-10-22