ABB ACS880+N5350 User Manual page 182

Cooling tower drives
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Table 13-1 Warning Messages (Alphabetical by Keypad Text)
Warning
Line side unit
warning
Process PID sleep
mode
Autoreset
Emergency stop
(off2)
Emergency stop
(off1 or off3)
Enable start signal
missing
(Editable message text)
Run enable missing
External power
signal missing
Identification run
Autophasing
STO event
Programmable event:
31.22 STO indication run/stop
3AXD50000011888
Fault #
Cause
AF85
The supply unit has
generated a warning.
AF8C
The drive is entering sleep
mode.
AFAA
A fault is about to be
autoreset.
AFE1
Drive has received an
emergency stop (mode
selection off2) command.
AFE2
Drive has received an
emergency stop (mode
selection off1 or off3)
command.
AFEA
No enable start signal
received.
AFEB
No run enable signal is
received.
AFEC
95.04 Control board
supply is set to External
24V but no voltage is
connected to the
XPOW connector of the
control unit.
AFF6
Motor ID run will occur at
next start.
AFF7
Autophasing will occur at
next start.
B5A0
Safe torque off function is
active, i.e. safety circuit
signal(s) connected to
connector XSTO is lost.
What to do
If using a control panel or the Drive composer tool,
connect to the supply unit to read the warning code.
Refer to the firmware manual of the supply unit for
instructions related to the code.
Informative warning. See section Sleep function for
process PID control, and parameters 40.41...40.48.
Informative warning. See the settings in parameter group
31 Fault functions.
Check that it is safe to continue operation. Then return
emergency stop push button to normal position. Restart
drive.
If the emergency stop was unintentional, check the
source selected by parameter 21.05 Emergency stop
source.
Check the setting of (and the source selected by)
parameter 20.19 Enable start command.
Check setting of parameter 20.12 Run enable 1 source.
Switch signal on (e.g. in the fieldbus Control Word) or
check wiring of selected source.
Check the external 24 V DC power supply to the control
unit, or change the setting of parameter 95.04.
Informative warning.
Informative warning.
Check safety circuit connections. For more information,
see appropriate drive hardware manual and description of
parameter 31.22 STO indication run/stop.
Troubleshooting 13-9

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