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.
- 3
Inspect the connected sensors for correct operation, response time, and proper synchronization.
Source: ABB AC500-S Safety
View Official PDF