Fault tracing 47
AFEB Emergency
OFF button
pressed
Emergency OFF
button on the cabinet
door has been
pressed.
Check that it is safe to release the
emergency OFF button on the front
door
and if it is, release the
emergency OFF
button.
If the emergency OFF button is
released
but the warning is still
active, check the
wiring of the signals
from the emergency
OFF button.
E204 Ambient
temperature
high
The air inlet
temperature of the
inverter unit is
approaching the
maximum converter
ambient
temperature.
Check and improve the cooling of the
electric room where converter is
placed.
E205 INU air
pressure high
The air pressure drop
across the inverter
unit is approaching
the limit value.
Check PM heatsinks for dust pick up
and
clean if required.
Check pressure drop sensor on
control
hub and replace control hub if
required.
E208
AC500
communicati
on
alarm
The watchdog
supervision of the
communication link
between BCU and
AC500 has detected a
communication
failure. Alarm is
activated according
to selection in
parameter 50.32 FBA
B comm loss func.
Check Modbus cable.
Check FSCA-01 module.
Check setting of parameter groups
54
FBA B settings, 55 FBA B data in
and 56
FBA B data out (changes
allowed only by
ABB authorized
personnel).
Note: Make sure that up to maximum
of
two fieldbus extension modules
are used
on the BCU.
E218 INU door not
closed
During charging of
the drive, the inverter
unit door lock has
reported that the
door is not locked.
Lock the inverter unit door.
Check internal wiring of the door lock
signals (open circuit, loose
terminals).
Check if fan is mechanically blocked
or
makes excessive noise (bearing
problem).
E21E
Control
backup supply
failure
Control backup
supply failure has
been detected based
on monitoring of the
digital signal.
Check the control backup supply
failure
signal.
Check setting of the parameter 81.11
Control backup supply monitoring.