Comparator 2 Limit Error

What does CP2 mean?

This fault signifies that the value monitored by Comparator 2 (selected by H2-26) has deviated *outside* the acceptable range defined by H2-27 (Lower Limit) and H2-28 (Upper Limit). This condition indicates that the monitored parameter has either gone too high or too low, triggering a protection response. Depending on the specific parameter being monitored, this could point to an over-temperature, under-pressure, or other critical process excursion that risks equipment damage or process instability if not resolved.

• Analog input signal (P5-03) or digital input signal (P5-04) exceeded comparator 2 limit.
• Second external limit condition met or exceeded.
• Process variable reading outside safe operating zone.
• Error in the configuration of the second comparator.

Click steps to track your progress.

1. 1

   Examine the monitor value selected in H2-26 [Comparator 2 Monitor Selection] and the set limits (H2-27, H2-28) to understand the exact condition that triggered the fault.

2. 2

   Identify and remove the root cause of the monitor value exceeding the defined range, adjusting process parameters, load, or external sensors as needed.

3. 3

   If the comparator settings are incorrect for the application, adjust H2-26, H2-27, and H2-28 as needed.

4. 4

   Review H2-01 to H2-03 (MFDO Function Selection) and H2-35 (Comparator2 Protection Selection) to ensure the desired fault response is configured. Perform a Fault Reset.