Universal Robots e-Series Error Code C451A6: Failed to initialize the M8 digital output low side sensor chip

Universal Robots Robot Minor System

Model: e-Series (UR3e/UR5e/UR10e/UR16e/UR20/UR30) | Code: C451A6

Applicable Systems
UR3 UR5 UR10 UR3e UR5e UR10e UR16e UR20 UR30

Symptoms

The tool M8 digital output low side sensor chip is not responding correctly.

Possible Causes

  • The tool M8 digital output low side sensor chip is not responding correctly.

Troubleshooting Steps

  1. Step 1: Conduct a complete rebooting sequence,
    Check if the issue is resolved after this step
  2. Step 2: Update software,
    Check if the issue is resolved after this step
  3. Step 3: Replace the tool PCB,
    Check if the issue is resolved after this step
  4. Step 4: 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