ABB ACS880 Firmware Manual page 177

Code Fault
(hex)
2E0A Current asymmetry
2E0B Current diff 12 pulse
3E04 DC link overvoltage
3E05 DC link undervoltage
3E06 BU DC link difference Difference in DC voltages
3E07 BU voltage difference Difference in main voltages
Cause
Positive and negative current
in one phase are not equal.
The DC busbar currents of
12- pulse diode supply unit
differ too much (40% of
nominal by default).
Excessive intermediate
circuit DC voltage
Intermediate circuit DC volt-
age is not sufficient due to
missing mains phase, blown
fuse or rectifier bridge internal
fault.
between parallel-connected
diode supply modules.
between parallel-connected
supply modules.
Fault tracing 177
What to do
One thyristor is not fired. Check
thyristors and thyristor interface
boards. Check the auxiliary code to
identify the winding
(15: 6-pulse diode supply unit or the
first winding of 12-pulse diode supply
unit, 16: the second winding of
12-pulse diode supply unit).
Check the DC fuses of DxT modules.
Check that there are not loose
connections in DC busbar.
Check that the inductances of the
windings are equal.
Contact your local ABB representative
if the limit needs to be changed.
Check that parameter
voltage is set according to the supply
voltage in use.
Check the auxiliary code to identify the
diode supply unit (15: single diode
supply unit or the first parallel-
connected diode supply unit, 16: the
second parallel-connected diode
supply unit).
Check the supply and fuses.
195.01 Supply
Check that parameter
voltage
is set according to the supply
voltage in use.
Check the DC fuses.
Check the connection to the DC bus.
If the problem persists, contact your
local ABB representative.
Check the auxiliary code (format
XXXYYYZZ). "XXX" specifies the source
of the first error (see "YYY"). "YYY"
specifies the module through which
control unit channel the fault was
received (1: Channel 1, 2: Channel 2,
4: Channel 3, 8: Channel 4, ...,
800: Channel 12).
Check cable connections.
Check the supply and fuses.
195.01 Supply