Analog Current Input Error

Hva betyr E26. ?

This error is detected when excessive current flows through the analog current input terminal FI. This is typically caused by a short-circuit in the wiring connected to the FI terminal or incorrect wiring connections. If left unresolved, it can damage the inverter's control circuit board or lead to inaccurate frequency reference inputs.

• Short circuit in the external wiring connected to the analog current input terminal FI (e.g., 0-20mA or 4-20mA source).
• Incorrect wiring of the external current source, such as connecting a voltage signal to the current input or improper polarity.
• External current source (e.g., sensor, PLC analog output) failing and outputting current above the inverter's maximum allowed input (e.g., >25mA).
• Internal fault on the inverter's analog input circuit (FI terminal), leading to an incorrect or out-of-range current reading.

Klikk på steg for å spore fremgangen.

1. 1

   Disconnect the external wiring from the FI analog current input terminal on the inverter. Reset the fault. If the fault clears, the issue is external to the inverter.

2. 2

   Measure the current output from the external source directly using a multimeter in series with the source, verifying it is within the expected range (e.g., 4-20mA).

3. 3

   Verify the wiring connections from the external current source to the FI and common (e.g., ACM) terminals, ensuring correct polarity and no short circuits.

4. 4

   Check the resistance between the FI terminal and the common (ACM) terminal on the inverter with power off. Compare to specifications (e.g., 250 Ω internal resistance for current input).

5. 5

   Ensure parameter settings related to the analog input (e.g., C022, C024 for FI scaling) are correctly configured for the expected current range and signal type.