3

Discrepancy time expired

ABB · AC500-S Safety

What does 3 mean?

The configured discrepancy time for redundant inputs has elapsed, meaning that the states of redundant channels did not synchronize within the expected timeframe. This indicates a fault in the sensors, wiring, or configuration, preventing valid safety signal evaluation.

Additional Steps

Steps 1–2 are listed in Priority Fix.

  1. 3

    Inspect the connected sensors for correct operation, response time, and proper synchronization.

Source: ABB AC500-S Safety
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