ABB ACS880 Firmware Manual page 172

172 Fault tracing
Code Warning
(hex)
AE61 Overvoltage
AE62 Undervoltage
AE67 AI supervision
Programmable
warning: 112.03 AI
supervision function
AE68 Emergency stop
warning
AE69 Synchronization
AE6A Current asymmetry
AE6B Input phase lost
Cause
Short-time overvoltage in
grid.
Grid voltage is not sufficient
due to missing phase in
supply connection, blown
fuse or rectifier bridge
internal fault.
An analog signal is outside
the limits specified for the
analog input.
Emergency stop warning is
activated.
Synchronization to supply
network has failed.
Positive and negative current
in one phase are not equal.
Missing phase in supply
connection, blown fuse or
rectifier bridge internal fault.
What to do
Check grid voltage for possible
transient cause.
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 supply and fuses.
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 event log for an auxiliary
code (format XYY). "X" specifies the
location of the input (0: AI on control
unit; 1: I/O extension module 1, etc.),
"YY" specifies the input and limit
(01: AI1 under minimum, 02: AI1 over
maximum, 03: AI2 under minimum,
04: AI2 over maximum).
Check signal level at the analog input.
Check the wiring connected to the
input.
Check the minimum and maximum
limits of the input in parameter group
112 Standard AI, 114 Extension I/O
module 1, 115 Extension I/O module 2
or 116 Extension I/O module
Check that it is safe to continue
operation.
Check possible network asymmetry.
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).
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 supply and fuses.
195.01 Supply
3.