
Fault tracing 335
A793
BR excess
temperature
Brake resistor temperature
has exceeded warning limit
Stop drive. Let resistor cool down.
Check resistor overload protection
function settings (parameter group
).
Check warning limit setting,
parameter
.
Check that the resistor has been
dimensioned correctly.
Check that braking cycle meets
allowed limits.
A794
BR data
Brake resistor data has not
been given.
Check the resistor data settings
(parameters
).
A79C BC IGBT excess
temperature
Brake chopper IGBT
temperature has exceeded
internal warning limit.
Let chopper cool down.
Check for excessive ambient
temperature.
Check for cooling fan failure.
Check for obstructions in the air flow.
Check the dimensioning and cooling
of the cabinet.
Check resistor overload protection
function settings (parameters
).
Check minimum allowed resistor value
for the chopper being used.
Check that braking cycle meets
allowed limits.
Check that drive supply AC voltage is
not excessive.
A7CE EFB comm loss
Programmable
Communication break in
embedded fieldbus (EFB)
communication.
Check the status of the fieldbus
master (online/offline/error etc.).
Check cable connections to the
EIA-485 terminals 25, 26, 27 and 28 on
the control unit.
A7EE
Panel loss
Programmable
warning:
Control panel or PC tool
selected as active control
location for drive has ceased
communicating.
Check PC tool or control panel
connection.
Check control panel connector.
Check mounting platform if being
used.
Disconnect and reconnect the control
panel.
A7AC Main IOMCU internal
error
Calibration data is not
stored in the main IOMCU.
Analog signals are not
working with full accuracy.
Contact ABB
A8A0 AI supervision
Programmable
warning:
An analog signal is outside
the limits specified for the
analog input.
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
A8A1
RO life warning
The relay has changed states
more than the recommended
number of times.
Change the control board or stop
using the relay output.
Code
(hex) Warning / Aux. code
Cause
What to do
Содержание ACS280
Страница 1: ... ABB MACHINERY DRIVES ACS280 coldplate drives Firmware manual ...
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Страница 10: ...10 ...
Страница 16: ...16 Control panel ...
Страница 20: ...20 Start up ID run and use ...
Страница 24: ...24 Default control connection ...
Страница 88: ...88 Program features ...
Страница 298: ...298 Parameters ...