8. TROUBLESHOOTING 
8 -  3 
 
Alarm code  Alarm deactivation 
 
No. 
CN1 
22 
(Bit 2) 
CN1 
23 
(Bit 1)
CN1 
24 
(Bit 0) 
Name 
Detail 
number
Detail name 
Stop 
System 
(Note 2, 
3) 
Alarm reset 
(RES) 
Press the "SET" 
button on the 
current alarm 
screen. 
Power off to on 
27.1 
Initial magnetic pole detection - 
Abnormal termination 
DB 
     
27.2 
Initial magnetic pole detection - 
Time out error 
DB 
     
27.3 
Initial magnetic pole detection - 
Limit switch error 
DB       
27.4 
Initial magnetic pole detection - 
Estimated error 
DB       
Alarm 
27.5 
Initial magnetic pole detection - 
Position deviation error 
DB       
 
27.6 
Initial magnetic pole detection - 
Speed deviation error 
DB 
     
 
27 1 1 0 
Initial magnetic pole 
detection error 
27.7 
Initial magnetic pole detection - 
Current error 
DB 
     
  28  1  1  0  Linear encoder error 2  28.1  Linear encoder - Environment error  EDB       
  2A.1  Linear encoder error 1-1  EDB       
  2A.2  Linear encoder error 1-2  EDB       
  2A.3  Linear encoder error 1-3  EDB       
  2A.4  Linear encoder error 1-4  EDB       
  2A.5  Linear encoder error 1-5  EDB       
  2A.6  Linear encoder error 1-6  EDB       
  2A.7  Linear encoder error 1-7  EDB       
 
2A  1  1  0  Linear encoder error 1 
2A.8  Linear encoder error 1-8  EDB       
  2B.1  Encoder counter error 1  EDB       
 
2B 1 1 0 Encoder counter error 
2B.2  Encoder counter error 2  EDB       
 
30.1  Regeneration heat error  DB 
 
(Note 1) 
 
(Note 1)
 
(Note 1)
 
30.2  Regeneration signal error  DB 
 
(Note 1) 
 
(Note 1)
 
(Note 1)
 
30 0 0 1 
Regenerative error 
(Note 1) 
30.3  Regeneration feedback signal error  DB 
 
(Note 1) 
 
(Note 1)
 
(Note 1)
 31 1 0 1  Overspeed  31.1 Abnormal motor speed  SD       
 
32.1 
Overcurrent detected at hardware 
detection circuit (during operation) 
DB    
 
 
32.2 
Overcurrent detected at software 
detection function (during 
operation) 
DB 
     
 
32.3 
Overcurrent detected at hardware 
detection circuit (during a stop) 
DB    
 
 
32 1 0 0  Overcurrent 
32.4 
Overcurrent detected at software 
detection function (during a stop) 
DB 
     
  33  0  0  1  Overvoltage  33.1  Main circuit voltage error  EDB       
 
35 1 0 1 
Command frequency 
error 
35.1  Command frequency error  SD 
     
  37.1  Parameter setting range error  DB       
 
37 0 0 0  Parameter error 
37.2  Parameter combination error  DB       
 
3A 0 0 0 
Inrush current 
suppression circuit 
error 
3A.1 
Inrush current suppression circuit 
error 
EDB    
 
 
42.1 
Servo control error by position 
deviation 
EDB 
 
(Note 4) 
 
(Note 4)
 
 
42.2 
Servo control error by speed 
deviation 
EDB 
 
(Note 4) 
 
(Note 4)
 
 
Servo control error 
(for linear servo motor 
and direct drive motor) 
42.3 
Servo control error by torque/thrust 
deviation 
EDB 
 
(Note 4) 
 
(Note 4)
 
 
42.8 
Fully closed loop control error by 
position deviation 
EDB 
 
(Note 4) 
 
(Note 4)
 
 
42.9 
Fully closed loop control error by 
speed deviation 
EDB 
 
(Note 4) 
 
(Note 4)
 
 
42 1 1 0 
Fully closed loop 
control error 
(for fully closed loop 
control) 
42.A 
Fully closed loop control error by 
position deviation during command 
stop 
EDB 
 
(Note 4) 
 
(Note 4)
 
 
45 0 1 1 
Main circuit device 
overheat (Note 1) 
45.1  Main circuit device overheat error  SD 
 
(Note 1) 
 
(Note 1)
 
(Note 1)