Fault tracing 423
AFF8 Motor heating active Pre-heating is being performed Informative warning. Motor pre-heating is
active. Current specified by parameter
21.16 Pre-heating current is being
passed through the motor.
AFEB Run enable missing No run enable signal is
received.
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.
AFEC External power signal
missing
95.04 Control board supply is
set to External 24V but no
voltage is connected to the
control unit.
Check the external 24 V DC power
supply to the control unit, or change the
setting of parameter 95.04.
AFED Enable to rotate Signal to rotate has not been
received within a fixed time
delay of 120 s.
Switch enable to rotate signal on (eg. in
digital inputs).
Check the setting of (and source
selected by) parameter 20.22 Enable to
rotate.
AFF6 Identification run Motor ID run will occur at next
start.
Informative warning.
B5F6 Identification run Motor ID run completed
successfully.
Informative warning.
B5A0 STO event
Programmable event:
31.22 STO indication
run/stop
Safe torque off function is
active, ie. safety circuit
signal(s) connected to
connector STO is lost.
Check safety circuit connections. For
more information, see chapter The Safe
torque off function in the Hardware
manual of the drive and description of
parameter 31.22 STO indication run/stop
(page 261).
D501 No more available
PFC motors
No more PFC motors can be
started because they can be
interlocked or in the Hand
mode.
Check that there are no interlocked PFC
motors, see parameters: 76.81…76.84. If
all motors are in use, the PFC system is
not adequately dimensioned to handle
the demand.
D502 All motors interlocked All the motors in the PFC
system are interlocked.
Check that there are no interlocked PFC
motors, see parameters 76.81…76.84.
D503 VSD controlled PFC
motor interlocked
The motor connected to the
drive is interlocked
(unavailable).
Motor connected to the drive is
interlocked and thus cannot be started.
Remove the corresponding interlock to
start the drive controlled PFC motor. See
parameters 76.81…76.84.
FA90 STO diagnostics
failure
The software is not working
properly.
Restart the control unit.
Code
(hex)
Warning / Aux. code
(aux code visible only
on assistant control
panel and drive
composer)
Cause What to do
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