Alarm
code
Alarm
subcode
Name Description 　Check point and remedy reference
2A Hex
(Erd)
Stall detec-
tion/startup
magnetic pole
position de-
tection failure
(1) Different motor
characteristics
Check that object 3004Hex-05Hex,
3004Hex-06Hex, 3007Hex-02Hex,
3007Hex-03Hex, 3007Hex-04Hex,
3007Hex-3DHex, 3007Hex-3EHex,
3007Hex-3FHex, 3007Hex-40Hex,
3007Hex-41Hex data matches motor con-
stants.
→ Perform auto tuning.
(2) Magnetic pole po-
sition detection meth-
od is not appropriate
Check that the magnetic pole position detec-
tion method matches the motor type.
→ Match the magnetic pole position detec-
tion method (object 3007Hex-1FHex)
selection to the motor type.
(3) Insufficient start-
ing frequency (hold-
ing time) (object
3004Hex-19Hex)
Check that, when setting the magnetic pole
position detection method selection (object
3007Hex-1FHex*) to 0 or 3, the starting fre-
quency (holding time) (object
3004Hex-19Hex) is set optimally
.
→
Set a time that enables the motor to ro-
tate one revolution or more.
　 3004Hex-19Hex ≥ 3007Hex-02Hex/
2/3004Hex-18Hex (3007Hex-02Hex:
pole, 3004Hex-18Hex: starting frequen-
cy)
(4) Insufficient start-
ing torque
Check acceleration time (object
3004Hex-08Hex, 3005Hex-0BHex,
3005Hex-0DHex, 3005Hex-0FHex) and ref-
erence current at starting (object
3007Hex-4BHex) data.
→ Set an acceleration time that matches
the load.
→ Raise the reference current at starting.
(5) Low braking load Check reference current at starting (object
3007Hex-4BHex*) 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 lower
.
(6) The connection
between the inverter
and the motor is
missing phases
→
Ensure a correct connection between
the inverter and motor.
9 Troubleshooting
9-9
M1 Series EtherCAT Type User’s Manual (I670)
9-1 Alarm Display and Remedies
9
9-1-2 Alarm Code List
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