Vacon NX Series Applications Manual page 373

FAULT TRACING
Fault
Fault
code
9 * Undervoltage
10 * Input line supervi-
sion
11 * Output phase
supervision
12 Brake chopper
supervision
13 Frequency con-
verter undertem-
perature
14 Frequency con-
verter overtem-
perature
15 * Motor stalled
16 * Motor overtemper-
ature
17 * Motor underload
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Subcode in
Possible cause
T.14
S1 = DC- The DC-link voltage is lower
link too low than the limits.
during run
too low a supply volt-
•
S2 = No
age
data from
AC drive internal fault
•
power unit
a defective input fuse
•
the external charge
•
S3 =
switch is not closed
Undervolt-
age control
supervision
The input line phase is
missing.
The measurement of cur-
rent tells that there is no
current in 1 motor phase.
There is no brake resistor.
The brake resistor is bro-
ken. A defective brake chop-
per.
Too low a temperature in
the heatsink of the power
unit or in the power board.
The heatsink temperature is
below -10 °C (14 °F).
Heatsink temperature is
over 90 °C (194 °F) (or 77 ºC
(170.6 °F), NX_6, FR6).
Overtemperature alarm is
issued when the heatsink
temperature goes over 85
°C (185 °F) (72 ºC (161.6
°F)).
The motor stalled.
There is too heavy a load on
the motor.
Motor underload protection
has tripped.
VACON · 373
How to correct the fault
If there is a temporary supply volt-
age break, reset the fault and start
the drive again.
Do a check of the supply voltage. If
the supply voltage is sufficient,
there is an internal fault.
Ask instructions from the distribu-
tor near to you.
Do a check of the supply voltage,
the fuses and supply cable.
Do a check of the motor cable and
the motor.
Do a check of the brake resistor
and the cabling.
If they are in good condition, there
is a fault in the resistor or the
chopper. Ask instructions from the
distributor near to you.
Do a check of the actual amount
and flow of cooling air.
Examine the heatsink for dust.
Do a check of the ambient temper-
ature.
Make sure that the switching fre-
quency is not too high in relation to
the ambient temperature and the
motor load.
Do a check of the motor and the
load.
Decrease the motor load. If there is
no motor overload, do a check of
the temperature model parame-
ters.
Do a check of the load.
10