ABB ACS880 Firmware Manual page 179

Code Fault
(hex)
4E04 Excess temperature
difference
4E06 Cabinet temperature
fault
4E07 Control board
temperature
4E08 Semiconductor
temperature
5E00 Fan
Cause
High temperature difference
between the semiconductors
of different phases. The
amount of available
temperatures depends on
the frame size.
A measurement device
connected to supply unit
digital input or DI1 has
tripped to a fault. Input is
selected with parameter
131.33 Cabinet temperature
fault source.
Excessive temperature of the
busbars/fuses due to
cabinet fan failure.
Excessive temperature of the
chokes inside the diode
supply module due to a
phase loss.
Excessive temperature of the
heat sink of the diode supply
module due to module fan
failure.
(Control program generates
first a warning, then a fault.)
High control board
temperature.
Semiconductor temperature
is excessive.
Cooling fan stuck or
disconnected.
Fault tracing 179
What to do
See AE15 Excess temperature
difference (page 166).
Check parameter 131.34 Cabinet
temperature supervision.
Check cabinet temperature source.
Replace the cabinet fan.
Check the input fuses and the input
connection.
Replace the module fan.
Check proper cooling of the cabinet.
Check ambient conditions.
Check air flow and fan operation.
Check heat sink fins for dust pick-up.
Check motor power against diode
supply unit power.
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).
See AE73 Fan (page 173).