Fault tracing 353
2024
ENCODER ERROR
bit 7
(programmable fault
function
Communication fault
between pulse
encoder and pulse
encoder interface
module or between
module and drive.
Check pulse encoder and its wiring,
pulse encoder interface module and
its wiring and parameter group
settings.
2025
FIRST START
bit 8
Motor identification
magnetization is on.
This alarm belongs to
normal start-up
procedure.
Wait until drive indicates that motor
identification is completed.
2026
INPUT PHASE
LOSS
bit 9
(programmable fault
function
Intermediate circuit DC
voltage is oscillating
due to missing input
power line phase or
blown fuse.
Alarm is generated
when DC voltage
ripple exceeds 14% of
nominal DC voltage.
Check input power line fuses.
Check for input power supply
imbalance.
Check fault function parameters.
2029
MOTOR BACK EMF
bit 12
Permanent magnet
synchronous motor is
rotating, start mode 2
(
) is
selected with
parameter
,
and run is requested.
Drive warns that
rotating motor cannot
be magnetized with
DC current.
If start to rotating motor is required,
select start mode 1 (
) with
parameter
.
Otherwise drive starts after motor has
stopped.
2035
SAFE TORQUE
OFF
bit 13
STO (Safe torque off)
requested and it
is set to
react with alarm.
If this was not expected reaction to
safety circuit interruption, check
cabling of safety circuit connected to
STO terminals X1C.
If different reaction is required, change
value of parameter
Note:
Start signal must be reset
(toggled to 0) if STO has been used
while drive has been running.
1)
Even when the relay output is configured to indicate alarm conditions (eg, parameter
= 5 (
)), this alarm is not indicated by a relay
output.
CODE ALARM
CAUSE
WHAT TO DO
Summary of Contents for ACS355 series
Page 1: ...ABB machinery drives User s manual ACS355 drives ...
Page 4: ......
Page 16: ...16 ...
Page 32: ...32 Operation principle and hardware description ...
Page 58: ...58 Electrical installation ...
Page 74: ...74 Start up control with I O and ID run ...
Page 106: ...106 Control panels ...
Page 120: ...120 Application macros ...
Page 178: ...178 Program features ...
Page 338: ...338 Fieldbus control with embedded fieldbus ...
Page 368: ...368 Fault tracing ...
Page 404: ...404 Dimension drawings ...
Page 410: ...410 Appendix Resistor braking ...
Page 434: ...434 Appendix Permanent magnet synchronous motors PMSMs ...