288
Fault tracing
3ADW000379R0501 DCS550 Manual e e
display
Control Panel
word
active when
Auxiliary undervoltage:
The auxiliary voltage is too low while the drive is in
operation. If resetting fails, check:
internal auxiliary voltages (SDCS-CON-F)
change SDCS-CON-F and / or SDCS-PIN-F
Armature overcurrent:
Check:
ArmOvrCurLev (30.09)
parameter settings of group 43 (current control:
armature current controller tuning)
current and torque limitation in group 20
all connections in the armature circuit, especially the
incoming voltage for synchronizing. If the
synchronizing voltage is not taken from the mains (e.g.
via synchronizing transformer or 230 V / 115 V
network) check that there is no phase shift between the
same phases (use an oscilloscope).
for faulty thyristors
armature cabling
− if TypeCode (97.01) is set properly
Armature overvoltage (DC):
Check:
if setting of ArmOvrVoltLev (30.08) is suitable for the
system
parameter settings of group 44 (field excitation: field
current controller tuning, EMF controller tuning, flux
linearization)
too high field current (e.g. problems with field
weakening)
if the motor was accelerated by the load,
overspeed
does the speed scaling fit, see SpeedScaleAct (2.29)
proper armature voltage feedback
connector X12 and X13 on SDCS-CON-F
− connector X12 and X13 on SDCS-PIN-F
Converter overtemperature:
Wait until the converter is cooled down.
Shutdown
MaxBridgeTemp (4.17). Check:
converter cover missing
converter fan supply voltage
converter fan direction of rotation
converter fan components
converter cooling air inlet (e.g. filter)
converter cooling air outlet
ambient temperature
− inadmissible load cycle
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