EL
ErrorLib
Brands
||
  1. Home
  2. ABB
  3. PB610 Panel Builder 600 Programming Software
  4. 311
About·Privacy·Terms

ErrorLib — Industrial Fault Code Library

Disclaimer: ErrorLib is an independent technical reference tool. While we aim for accuracy, always verify with the manufacturer’s official service manuals before performing maintenance on industrial equipment. ErrorLib is not affiliated with the brands listed.

311

Channel value difference too high

ABB · PB610 Panel Builder 600 Programming Software

What does 311 mean?

The difference between redundant channel values (e.g., from two sensors monitoring the same safety function) has exceeded the configured tolerance window. This indicates a significant discrepancy in sensor readings or a potential issue with one of the channels. This is a severity 3 error.

Common Causes

  • Difference between monitored channel values exceeds a defined limit.
  • Discrepancy in sensor readings from redundant inputs.
  • Calibration mismatch between channels.
  • One channel experiencing a drift or failure.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Adjust the tolerance window setting for the affected channels in the safety configuration if the current value is overly restrictive.

  2. 2

    Check the channel wiring for both affected channels for proper connections and signal integrity.

  3. 3

    Verify the configuration and calibration of the sensors connected to the affected channels.

Browse all codes in this manual (58)
Verified technical data. Last updated: April 2026

Related Faults

1Safety Destination Address Not Valid (V2 CPU)10Parameter F_SIL Exceeds Specific Application SIL (V2 CPU)11Safety Watchdog Time Zero (V2 CPU)
Source: ABB PB610 Panel Builder 600 Programming Software
Open Manual (Page 461)Search more codes in this manual