FAULT TRACING
vacon • 111
9
Fault
code
Fault
Possible cause
Correcting measures
8
System fault
-
component failure
-
faulty operation
Note exceptional fault data record.
S1 = Reserved
S2 = Reserved
S3 = Reserved
S4 = Reserved
S5 = Reserved
S6 = Reserved
S7 = Charging switch
S8 = No power to driver card
S9 = Power unit communication (TX)
S10 = Power unit communication (Trip)
S11 = Power unit comm. (Measurement)
Reset the fault and restart.
Should the fault re-occur, contact the
distributor near to you.
9
Undervoltage
DC-link voltage is under the voltage limits
defined.
most probable cause: too low a supply
voltage
AC drive internal fault
defect input fuse
external charge switch not closed
Subcode in T.14:
S1 = DC-link too low during run
S2 = No data from power unit
S3 = Undervoltage control supervision
In case of temporary supply voltage
break reset the fault and restart the AC
drive. Check the supply voltage. If it is
adequate, an internal failure has
occurred.
Contact the distributor near to you.
10
Input line
supervision
Input line phase is missing.
Check supply voltage, fuses and cable.
11
Output phase
supervision
Current measurement has detected that
there is no current in one motor phase.
Check motor cable and motor.
12
Brake chopper
supervision
no brake resistor installed
brake resistor is broken
brake chopper failure
Check brake resistor and cabling.
If the these are ok, the chopper is faulty.
Contact the distributor near to you.
13
AC drive under-
temperature
Heatsink temperature is under -14 F
(–10 C)
14
AC drive over-
temperature
Heatsink temperature is over 194 F (90 C)
(or 170.6 F (77ºC), NX_6, FR6).
Overtemperature warning is issued when
the heatsink temperature exceeds 185 F
(85 C) (161.6 F (72ºC)).
Check the correct amount and flow of
cooling air.
Check the heatsink for dust.
Check the ambient temperature.
Make sure that the switching frequency
is not too high in relation to ambient
temperature and motor load.
15
Motor stalled
Motor stall protection has tripped.
Check motor and load.
16
Motor over-
temperature
Motor overheating has been detected by
AC drive motor temperature model. Motor
is overloaded.
Decrease motor load.
If no motor overload exists, check the
temperature model parameters.
17
Motor
underload
Motor underload protection has tripped.
Check load.
18
Unbalance
Unbalance between power modules in
parallelled units.
Subcode in T.14:
S1 = Current unbalance
S2 = DC voltage unbalance
Should the fault re-occur, contact the
distributor near to you.
22
EEPROM
checksum fault
Parameter save fault
faulty operation
component failure
Should the fault re-occur, contact the
distributor near to you.
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