Fault tracing vacon • 147
Local contacts: http://drives.danfoss.com/danfoss-drives/local-contacts/
9
7 Saturation trip
Various causes:
- defective component
- brake resistor short-circuit or
overload
Cannot be reset from the
keypad.
Switch off power.
DO NOT RE-CONNECT
POWER!
Contact your local
distributor.
If this fault appears
simultaneously with Fault 1,
check motor cables and
motor.
8 System fault
- component failure
- faulty operation
Note exceptional fault data record.
Subcode in T.14:
S1 = Feedback of motor voltage
S2 = Reserved
S3 = Reserved
S4 = ASIC trip
S5 = Disturbance in VaconBus
S6 = Feedback of charging switch
S7 = Charging switch
S8 = No power to driver card
S9 = Power unit communication (TX)
S10 = Power unit communication (Trip)
S11 = Power unit comm. (Measurement)
S12 = Expander board (slot D or E)
S30-S48 = OPT-AF board (slot B)
Reset the fault and restart.
Should the fault re-occur,
contact your local distributor.
9 Undervoltage
DC-link voltage is under the voltage
limits defined in Table 9.
- most probable cause: too low a
supply voltage
- AC drive internal fault
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 fail-
ure has occurred.
Contact your local distributor.
10
Input line
supervision
Input line phase is missing.
Subcode in T.14:
S1 = Phase supervision diode supply
S2 = Phase supervision active front end
Check supply voltage, fuses
and cable.
12
Brake chopper
supervision
- no brake resistor installed
- brake resistor is broken
- brake chopper failure
Check brake resistor and
cabling.
If ok, the chopper is faulty.
Contact your local distribu-
tor.
13
Frequency
converter
undertemperature
Heatsink temperature is under –10 °C.
Table 60. Fault codes
Fault
code
Fault Possible cause Correcting measures
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