Analog input below minimum

What does AI < Min mean?

An analog input signal (e.g., current or voltage) connected to the ACS880 drive dropped below its configured minimum threshold. This indicates a potential problem with the sensor, its wiring, or the signal source.

• Broken wire or loose connection in the analog input signal path from the sensor to the drive.
• Faulty sensor or transducer that is not providing the expected output signal.
• Signal conditioner failure, resulting in an incorrect or absent signal.
• Analog input scaling parameters (e.g., 13.01 AI1 min, 13.02 AI1 max) are incorrectly set, causing the drive to misinterpret a valid signal as too low.
• The monitored physical quantity (e.g., pressure, temperature, speed) has genuinely dropped below its operational minimum.

Click steps to track your progress.

1. 1

   Identify the specific analog input (e.g., AI1, AI2) that triggered the fault by checking the event log.

2. 2

   Measure the voltage or current signal directly at the drive's analog input terminals and compare it to the expected range and the configured minimum threshold.

3. 3

   Inspect the wiring from the sensor/transducer to the drive for continuity, shorts, loose connections, or shielding issues.

4. 4

   Verify the sensor is functioning correctly and providing an output within its specified range; if faulty, replace the sensor.

5. 5

   Check the analog input parameters (e.g., 13.01 AI1 min, 13.02 AI1 max) to ensure the minimum threshold is set appropriately for the application and sensor range.