Fault tracing 353
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
synchronous 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.
2035 SAFE TORQUE
OFF
0309 bit 13
STO (Safe torque off)
requested and it
functions correctly.
Parameter 3025 STO
OPERATION 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 3025 STO
OPERATION.
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 1401
RELAY OUTPUT 1 = 5 (ALARM) or 16 (FLT/ALARM)), this alarm is not indicated by a relay
output.
CODE ALARM CAUSE WHAT TO DO
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