Vacon NX - Page 79

Fault codes and software
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80
4
F50 Analogue input <4mA
F50 displayed.
Check data in
fault history.
External fault. Replace
mA sensor or its cable.
Value
> 4mA?
Measure input value
at corresponding
I/O terminal.
Internal fault. Replace
faulty option board.
NO YES
FIGURE 39. Fault code F50