Fault
code
Fault
Subcode in
T.14
Possible cause
How to correct the fault
10 *
Input line supervi-
sion
The input line phase is
missing.
Do a check of the supply voltage,
the fuses and supply cable.
11 *
Output phase
supervision
The measurement of cur-
rent tells that there is no
current in 1 motor phase.
Do a check of the motor cable and
the motor.
12
Brake chopper
supervision
There is no brake resistor.
The brake resistor is bro-
ken. A defective brake chop-
per.
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.
13
Frequency con-
verter undertem-
perature
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).
14
Frequency con-
verter overtem-
perature
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)).
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.
15 *
Motor stalled
The motor stalled.
Do a check of the motor and the
load.
16 *
Motor overtemper-
ature
There is too heavy a load on
the motor.
Decrease the motor load. If there is
no motor overload, do a check of
the temperature model parame-
ters.
17 *
Motor underload
Motor underload protection
has tripped.
Do a check of the load.
18 **
Unbalance
S1 = Cur-
rent unbal-
ance
Unbalance between power
modules in parallelled
power units.
If the fault occurs again, ask
instructions from the distributor
near to you.
S2 = DC
voltage
unbalance
22
EEPROM check-
sum fault
Parameter save fault.
•
operation malfunction
•
defective component
If the fault occurs again, ask
instructions from the distributor
near to you.
VACON · 152
FAULT TRACING
10
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