Vacon · NX Liquid-Cooled Drive
The current at the analogue input, which is configured for a 4 to 20mA signal range, has dropped below 4mA. This fault is commonly caused by a broken or loose control cable in the current loop or a failure of the signal source providing the analogue input.
Click steps to track your progress.
Check the entire current loop circuitry, including the analogue signal source, control cabling, and connections at the analogue input terminal, for breaks or loose wires.
Measure the current output from the analogue signal source to confirm it is providing at least 4mA.