ABB ACSM1 Firmware Manual page 244

244
Code Fault
(fieldbus code)
0026 AUTOPHASING
(0x3187)
0027 PU LOST
(0x5400)
0028 PS COMM
(0x5480)
0029 IN CHOKE TEMP
(0xFF81)
0030 EXTERNAL
(0x9000)
0031 SAFE TORQUE OFF
(0xFF7A)
Programmable fault:
STO DIAGNOSTIC
0032 OVERSPEED
(0x7310)
Fault tracing
Cause
Autophasing routine failed
because the estimated angle of
the rotor differs too much from
the measured angle of the rotor.
All other reasons for the
autophasing fault are explained
in section Autophasing
39.
Connection between the JCU
Control Unit and the power unit
of the drive is lost.
Communication errors detected
between the JCU Control Unit
and the power unit of the drive.
Temperature of internal AC
choke excessive.
Fault in external device. (This
information is configured
through one of programmable
digital inputs.)
Safe Torque Off function is
active, i.e. safety circuit
signal(s) connected to
46.07
connector X6 is lost
- during drive start or drive run
or
- while drive is stopped and
parameter 46.07 STO
DIAGNOSTIC setting is
Fault.
Motor is turning faster than
highest allowed speed due to
incorrectly set minimum/
maximum speed, insufficient
braking torque or changes in
load when using torque
reference.
What to do
Try other autophasing modes (see parameter
11.07 AUTOPHASING
In addition, repeat autophasing multiple times
and check the value in parameter
OFFSET USER
section Autophasing). The value should not
on page change between consecutive autophasing
runs.
Check that there is no slip in the encoder
connection to the motor axle. Because of the
slip the estimated and measured drive speed
may differ during fast accelerations/
decelerations.
Check the connections between the JCU
Control Unit and the power unit.
If the JCU is powered from an external
supply, ensure that parameter
UNIT SUPPLY
Check the connections between the JCU
Control Unit and the power unit.
If the JCU is powered from an external
supply, ensure that parameter
UNIT SUPPLY
Check cooling fan.
Check external devices for faults.
Check setting of parameter
FAULT.
Check safety circuit connections. For more
information, see the appropriate drive
hardware manual and Application guide -
Safe torque off function for ACSM1, ACS850
and ACQ810 drives (3AFE68929814
[English]).
(1)
Check minimum/maximum speed settings,
parameters 20.01 MAXIMUM SPEED
20.02 MINIMUM
Check adequacy of motor braking torque.
Check applicability of torque control.
Check need for braking chopper and
resistor(s).
MODE) if possible.
97.20 POS
between separate runs (see
95.01 CTRL
is set to (1) External 24V.
95.01 CTRL
is set to (1) External 24V.
46.01 EXTERNAL
and
SPEED.