Universal Robots e-Series Error Code C261A21: Safety Control Board temperature is too high: {float} Celsius

Universal Robots Robot Critical Safety

Model: e-Series (UR3e/UR5e/UR10e/UR16e/UR20/UR30) | Code: C261A21

Applicable Systems
UR3 UR5 UR10 UR3e UR5e UR10e UR16e UR20 UR30

Symptoms

The temperature of the Safety Control Board is too high.

Possible Causes

  • The temperature of the Safety Control Board is too high.

Troubleshooting Steps

  1. Step 1: Reduce ambient temperature
    Check if the issue is resolved after this step
  2. Step 2: Conduct a complete rebooting sequence,
    Check if the issue is resolved after this step
  3. Step 3: Update software,
    Check if the issue is resolved after this step
  4. Step 4: Replace the Safety Control Board
    Check if the issue is resolved after this step
  5. Step 5: Contact your local Universal Robots service provider for assistance
    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

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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