Vacon NX - Page 81

Fault codes and software
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82
4
F52 Keypad communication fault
F52 displayed.
Check data in
fault history.
Communication faulty
in panel or
control board.
Empty
panel?
Possible fault locations are
at cable between panel
and control board or
on the control board.
NO
YES
NOTE:
Fault can occur when the panel is
active control place.
Measure +9V
between pins 1 and
2 on connector.
9V present?
YES
Faulty control board.
NO
FIGURE 41. Fault code F52