ABB ACS355 - Page 339

Fault tracing 339
2021 START ENABLE 1
MISSING
0309 bit 4
No Start enable 1
signal received
Check parameter 1608 START
ENABLE 1 settings.
Check digital input connections.
Check fieldbus communication
settings.
2022 START ENABLE 2
MISSING
0309 bit 5
No Start enable 2
signal received
Check parameter 1609 START
ENABLE 2 settings.
Check digital input connections.
Check fieldbus communication
settings.
2023 EMERGENCY
STOP
0309 bit 6
Drive has received
emergency stop
command and ramps
to stop according to
ramp time defined by
parameter 2208
EMERG DEC TIME.
Check that it is safe to continue
operation.
Return emergency stop push button to
normal position.
2024 ENCODER ERROR
0309 bit 7
(programmable fault
function 5003)
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 50
ENCODER settings.
2025 FIRST START
0309 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
0309 bit 9
(programmable fault
function 3016)
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
0309 bit 12
Permanent magnet
motor is rotating, start
mode 2 (DC MAGN) is
selected with
parameter 2101
START FUNCTION,
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 (AUTO) with
parameter 2101 START FUNCTION
.
Otherwise drive starts after motor has
stopped.
CODE ALARM CAUSE WHAT TO DO