Schneider Electric AP9635 manual UPS Network Management Card 2 User’s Guide

Example of falling but wavering temperature: The minimum temperature threshold is 55°F, and the temperature hysteresis is 3°F. The temperature drops below 55°F, violating the threshold. It then wavers up to 56°F and then down to 53°F repeatedly, but no clearing event and no new violation occur. For the existing violation to clear, the temperature would have to rise above 58°F (3°F past the threshold).

Example of rising but wavering humidity: The maximum humidity threshold is 65%, and the humidity hysteresis is 10%. The humidity rises above 65%, violating the threshold. It then wavers down to 60% and up to 70% repeatedly, but no clearing event and no new violation occur. For the existing violation to clear, the humidity would have to drop below 55% (10% past the threshold).

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