ABB ACS880+N5350 User Manual page 177

Cooling tower drives
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Table 13-1 Warning Messages (Alphabetical by Keypad Text)
Warning
Measurement circuit
DFF
PU state feedback
Charging feedback
Motor nominal value A6A4
No motor data
Supply voltage
unselected
FBA A parameter
conflict
FBA B parameter
conflict
AI parametrization
Motor stall
Programmable warning:
31.24 Stall function
Motor fan
Programmable warning:
35.106 DOL starter event type
FEN temperature
Brake resistor
13-4 Troubleshooting
Fault #
Cause
A5EE
Measurement circuit fault.
A5EF
State feedback from
output phases does not
match control signals.
A5F0
Charging feedback signal
missing.
The motor parameters are
set incorrectly.
The drive is not
dimensioned correctly.
A6A5
Parameters in group 99
have not been set.
A6A6
The supply voltage has
not been defined.
A6D1
The drive does not have a
functionality requested
by a PLC, or requested
functionality has not been
activated.
A6D2
The drive does not have a
functionality requested
by a PLC, or requested
functionality has not been
activated.
A6E5
The current/voltage
hardware setting of an
analog input does
not correspond to
parameter settings.
A780
Motor is operating in stall
region because of e.g.
excessive load or
insufficient motor power.
A781
No feedback received
from external fan.
A782
Error in temperature
measurement when
temperature sensor (KTY
or PTC) connected to
encoder interface FEN-xx
is used.
Error in temperature
measurement when KTY
sensor connected to
encoder interface FEN-01
is used.
A791
Brake resistor broken or
not connected.
What to do
Contact your local ABB representative.
Contact your local ABB representative.
Check the feedback signal coming from the charging
system.
Check the settings of the motor configuration parameters
in group 99.
Check that the drive is sized correctly for the motor.
Check that all the required parameters in group 99 have
been set.
Note: It is normal for this warning to appear during the
start-up and continue until the motor data is entered.
Set supply voltage in parameter 95.01 Supply voltage.
Check PLC programming.
Check settings of parameter groups 50 Fieldbus adapter
(FBA) and 51 FBA A settings.
Check PLC programming.
Check settings of parameter groups 50 Fieldbus adapter
(FBA) and 54 FBA B settings.
Check the event log for an auxiliary code. The code
identifies the analog input whose settings are in conflict.
Adjust either the hardware setting (on the drive control
unit) or parameter 12.15/12.25.
Note: Control board reboot (either by cycling the power or
through parameter 96.08 Control board boot) is required
to validate any changes in the hardware settings.
Check motor load and drive ratings.
Check fault function parameters.
Check external fan (or other equipment controlled) by the
logic.
Check settings of parameters 35.100...35.106.
Check that parameter 35.11 Temperature 1 source /
35.21 Temperature 2 source setting corresponds to actual
encoder interface installation.
FEN-01 does not support temperature measurement with
KTY sensor. Use PTC sensor or other encoder interface
module.
Check that a brake resistor has been connected.
Check the condition of the brake resistor.
3AXD50000011888

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