Vacon NXV0040 - Page 43

MAINTENANCE AND TROUBLESHOOTING vacon • 43
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64
MCC Fault
Contactor acknowledgment is used
through digital input and close com-
mand is given without response within
the time set with parameter “MCont
FaultDelay”
Check the main power switch of the
Drive and Acknowledge input.
70
LCL Tempera-
ture
LCL Overtemp trip from digital input.
Check the LCL filter and signal connec-
tion. Check fan
72
AC VoltMax Trip
AC voltage on line side is above the max
limit.
Check AC Voltage
73
AC VoltMin Trip
AC voltage on line side is below the min
limit.
Check AC Voltage
74
FreqOverLimit
AC frequency on line side is above the
max limit.
Check AC Frequency
75
FreqUnderLimit
AC frequency on line side is below the
min limit.
Check AC Frequency
76
DC Ground
Warning
DC Insulation measurement signal has
gone above the warning limit.
Check DC Insulation
77
DC Ground
Fault
DC Insulation measurement signal has
gone above the fault limit.
Check DC Insulation
83
Surge Alarm Surge alarm from digital input.
Remove fault situation from external
device.
85
Fieldbus
Heartbeat signal from touchpad panel is
missing while running in array configu-
ration.
Warning = inverter not active
Fault = inverter active
Check touchpad panel. Check the con-
trol place
86
Input Switch Input Switch in wrong state Check the input Switch
Table 7-1. Fault codes