Analog Input Fault

What does E.AIE mean?

This fault appears when there is a mismatch between the type of signal (voltage or current) being input to terminal 4 and the inverter's configuration settings. Specifically, it occurs if voltage (current) is applied while Pr. 267 (Terminal 4 input selection) and the physical voltage/current input switch are set differently. This can lead to incorrect speed commands or erratic operation.

• Inverter parameter Pr. 73 (Analog input terminal 4 function selection) is set for a current input (e.g., 4-20mA) but a voltage signal (e.g., 0-10V) is connected to terminal 4.
• Inverter parameter Pr. 73 is set for a voltage input (e.g., 0-10V) but a current signal (e.g., 4-20mA) is connected to terminal 4.
• Incorrect wiring of the analog input signal (e.g., polarity reversal for current loop, common ground issue) to terminal 4.
• External sensor or signal generator failing to provide the expected signal type or range to terminal 4.
• Physical damage or incorrect jumper setting on the inverter's control board related to analog input terminal 4 (e.g., voltage/current selector switch).

Click steps to track your progress.

1. 1

   Verify the setting of Pr. 73 (Analog input terminal 4 function selection) matches the type of signal connected to terminal 4 (e.g., 0=0-10V, 1=4-20mA).

2. 2

   Check the wiring connected to inverter terminal 4 for correct polarity and ensure proper connection of the signal common (e.g., SD terminal).

3. 3

   Measure the actual analog signal voltage or current at terminal 4 using a multimeter to confirm the external device is outputting the expected signal type and range.

4. 4

   Inspect any internal jumpers or dip switches on the inverter's control board that might configure terminal 4 for voltage or current input.

5. 5

   Temporarily disconnect the external analog input from terminal 4 and try to control the inverter frequency via the PU panel (Pr. 79 = 0) to isolate the fault.