Signal supervision 2

What does 80B1 mean?

A fault generated by the signal supervision 2 function, indicating that a monitored signal has violated its defined limits or conditions. This signifies an abnormal condition in a specific process signal that the drive is supervising. Unresolved, it can lead to incorrect operation or safety issues.

• Monitored process sensor (e.g., pressure, flow) providing an out-of-range signal value (e.g., analog input AI1 < 4mA or > 20mA).
• Breakage or short circuit in the sensor wiring for the monitored signal (e.g., between sensor and drive terminal X1:AI1).
• Incorrectly configured signal limits or scaling parameters (e.g., P3-10 min/max for analog input) for the supervision function.
• External electrical noise or ground loop affecting the low-voltage analog signal input, causing erratic readings.

Click steps to track your progress.

1. 1

   1. Measure the voltage or current output directly from the process sensor with a multimeter to verify its actual value (e.g., 4-20mA loop).

2. 2

   2. Inspect and continuity-test the signal cabling between the sensor and the drive's analog input terminals (e.g., X1:AI1).

3. 3

   3. Review the signal supervision parameters (e.g., P3-11 'Signal min limit', P3-12 'Signal max limit') and adjust them to match the expected operating range.

4. 4

   4. Verify proper shielding and grounding of the analog signal cable, ensuring shield is connected at one end (e.g., drive end) to minimize noise.

5. 5

   5. Test the sensor's own power supply voltage (e.g., 24VDC at sensor terminals) to ensure it is within specified limits.