Vacon NXI FI9 series User Manual page 108

108 vacon
Fault Fault
code
8 System fault
S7 = Charging
switch
S8 = No power
to driver card
S9 = Power unit
communication
(TX)
S10 = Power
unit
communication
(Trip)
S11 = Power
unit comm.
(Measurement)
9 Undervoltage
S1 = DClink too
low during run
S2 = No data
from power
unit
S3 =
Undervoltage
control
supervision
10 Input line
supervision
11 Output phase
supervision
12 Brake chopper
supervision
13 Inverter
undertemperat
ure
14 Inverter
overtemperatu
re
15 Motor stalled
9
Possible cause
component failure
faulty operation
Note the exceptional Fault data
record. See 7.3.4.3.
DC-link voltage is under the voltage
limits defined in
most probable cause: too low a supply
voltage
inverter internal fault
a defective input fuse
the external charge switch is not
closed
The input line phase is missing.
Current measurement has detected
that there is no current in one motor
phase.
No brake resistor installed
brake resistor is broken
brake chopper failure
Heatsink temperature is under 10C
Heatsink temperature is over 90C or
77ºC (NX_6, FR6).
Overtemperature warning is issued
when the heatsink temperature
exceeds 85C (72ºC).
Motor stall protection has tripped.
Local contacts: https://www.danfoss.com/en/contact-us/contacts-list/
fault tracing
Correcting measures
Reset the fault and restart.
Should the fault re-occur, contact
the distributor near to you.
For local contacts, go to:
http://drives.danfoss.com/danfoss-
drives/local-contacts/
In case of temporary supply voltage
break, reset the fault and restart the
inverter. Check the supply voltage. If
it is adequate, an internal failure has
occurred.
Contact the nearest distributor.
For local contacts, go to:
http://drives.danfoss.com/danfoss-
drives/local-contacts/
Check the supply voltage, the fuses
and supply cable.
Check motor cable and motor.
Check brake resistor.
If the resistor is ok, the chopper is
faulty. Contact the distributor near
to you.
For local contacts, go to:
http://drives.danfoss.com/danfoss-
drives/local-contacts/
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.
Check motor.