ABB ACS880 Firmware Manual page 533

Code
Warning / Aux. code
(hex)
AE0C BU DC link difference
AE0D BU voltage difference
AE14 Excess temperature
AE15 Excess temperature
difference
AE16 IGBT temperature
AE24 Voltage category
unselected
AE5F Temperature Warning
AE73 Fan
AE78 Net lost
AE85 Charging count
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Cause
DC link voltage difference
detected by the branching unit.
Main voltage difference
detected by the branching unit.
High temperature difference
between the IGBTs of different
phases.
High temperature difference
between the IGBTs of different
phases.
IGBT temperature is
excessive.
The supply voltage range has
not been defined.
Supply module temperature is
excessive due to eg, module
overload or fan failure.
Cooling fan is stuck or
disconnected.
Net lost is detected.
There are too many DC link
charging attempts.
Fault tracing 533
What to do
Check DC fuses.
Check converter module connections to
DC link.
Check AC fuses.
Check supply cable.
Check ambient conditions.
Check air flow and fan operation.
Check heatsink fins for dust pick-up.
Check motor power against IGBT supply
unit power.
Check the cabling.
Check cooling of power module(s).
Check ambient conditions.
Check air flow and fan operation.
Check heatsink fins for dust pick-up.
Check motor power against IGBT supply
unit power.
Define the supply voltage range
(parameter 95.01 Supply voltage).
Check module cooling air flow and fan
operation.
Check ambient temperature. If it exceeds
40 °C (104 °F), ensure that load current
does not exceed derated load capacity.
See appropriate hardware manual.
Check inside of cabinet and heatsink of
supply module for dust pick-up. Clean
whenever necessary.
Check the auxiliary code in the line-side
converter program to identify the fan.
Check fan operation and connection.
Replace fan if faulty.
Resynchronize the IGBT supply unit to
the grid after net lost.
Two attempts in five minutes is allowed to
prevent charging circuit overheating.