Alarm
code
Alarm
sub-
code
Name Description Check point and remedy reference
(Erd)
Stall detection/
startup magnet-
ic pole position
detection failure
(1) Different motor char-
acteristics
Check that parameter
(F04,F05,P01,P02,P03,P60,P61,P62,P63,P6
4) data matches motor constants.
→ Perform auto tuning.
(2) Magnetic pole posi-
tion detection method is
not appropriate
Check that the magnetic pole position detec-
tion method matches the motor type.
→ Match the magnetic pole position de-
tection method (parameter P30) selec-
tion to the motor type.
(3) Insufficient starting
frequency (holding
time) (parameter F24)
Check that, when setting the magnetic pole
position detection method selection (parame-
ter P30*) to 0 or 3, the starting frequency
(holding time) (parameter F24) is set opti-
mally
.
→ Set a time that enables the motor to ro-
tate one revolution or more.
F24 ≥ P01/2/F23 (P01: pole, F23: start-
ing frequency)
(4) Insuf
ficient starting
torque
Check acceleration time (parameter F07,
E10, E12, E14) and reference current at
starting (parameter P74) data.
→ Set an acceleration time that matches
the load.
→ Raise the reference current at starting.
(5) Low braking load Check reference current at starting (parame-
ter P74*) data.
→ Lower the reference current at starting.
When a motor is run on its own, such
as during a test run, set to 80% or low-
er
.
(6) The connection be-
tween the inverter and
the motor is missing
phases
→ Ensure a correct connection between
the inverter and motor.
9 Troubleshooting
9-10
M1 Series Standard Type User's Manual (I669)
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