Mitsubishi Electric Melservo-J4 Instruction Manual page 17

Alarm Detail
No. Name No. Name
42 Servo control 42.1 Servo control
error error by position
(for linear deviation
servo motor
42.2 Servo control
and direct
error by speed
drive motor)
deviation
42.3 Servo control
error by torque/
thrust deviation
Fully closed 42.8 Fully closed
loop control loop control
error error by position
(for fully closed deviation
loop control)
42.9 Fully closed
loop control
error by speed
deviation
42.A Fully closed
loop control
error by position
deviation during
command stop
45 Main circuit 45.1 Main circuit
device device overheat
overheat error 1
45.2 Main circuit
device overheat
error 2
46 Servo motor 46.1 Abnormal
overheat temperature of
servo motor 1
46.2 Abnormal
temperature of
servo motor 2
46.3 Thermistor
disconnected
error
46.4 Thermistor
circuit error
46.5 Abnormal
temperature of
servo motor 3
46.6 Abnormal
temperature of
servo motor 4
47 Cooling fan 47.1 Cooling fan stop
error error
47.2 Cooling fan
speed reduction
error
Stop Alarm deactivation
method
Alarm CPU Cycling
*2*3
reset reset the
power
*4 *4
EDB 
*4 *4

EDB
*4 *4
EDB 
*4 *4

EDB
*4 *4

EDB
*4 *4

EDB
*1 *1 *1
  
SD
*1 *1 *1
  
SD
*1 *1 *1
  
SD
*1 *1 *1
SD   
*1 *1 *1
  
SD
*1 *1 *1
SD   
*1 *1 *1
  
DB
*1 *1 *1
DB   
  
SD
SD   
1 TROUBLESHOOTING FOR SERVO AMPLIFIER (DRIVE UNIT)
Process Stop Alarm code
ing system
ACD3 ACD2
*9
system
(Bit 3) (Bit 2)
*9
Each axis Each 0 1
axis
Each axis Each
axis
Each axis Each
axis
Each axis Each
axis
Each axis Each
axis
Each axis Each
axis
Common All axes 0 0
Common All axes
Each axis Each 0 0
axis
Each axis Each
axis
Each axis Each
axis
Each axis Each
axis
Each axis Each
axis
Each axis Each
axis
Common All axes 0 0
Common All axes
*8
ACD1 ACD0
1
(Bit 1) (Bit 0)
1 0
1 1
1 1
1 1
15
1.2 Alarm list