Mitsubishi Electric Melservo-J4 Instruction Manual page 13

Alarm Detail
No. Name No. Name
20 Encoder 20.1 Encoder normal
normal communication
communication - Receive data
error 1 error 1
20.2 Encoder normal
communication
- Receive data
error 2
20.3 Encoder normal
communication
- Receive data
error 3
20.5 Encoder normal
communication
- Transmission
data error 1
20.6 Encoder normal
communication
- Transmission
data error 2
20.7 Encoder normal
communication
- Transmission
data error 3
20.9 Encoder normal
communication
- Receive data
error 4
20.A Encoder normal
communication
- Receive data
error 5
21 Encoder 21.1 Encoder data
normal error 1
communication
21.2 Encoder data
error 2
update error
21.3 Encoder data
waveform error
21.4 Encoder non-
signal error
21.5 Encoder
hardware error
1
21.6 Encoder
hardware error
2
21.9 Encoder data
error 2
24 Main circuit 24.1 Ground fault
error detected by
hardware
detection circuit
24.2 Ground fault
detected by
software
detection
function
Stop Alarm deactivation
method
Alarm CPU Cycling
*2*3
reset reset the
power
EDB   
  
EDB
  
EDB
  
EDB
  
EDB
  
EDB
  
EDB
EDB   
  
EDB
EDB   
  
EDB
EDB   
  
EDB
EDB   
  
EDB
DB   
  
DB
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
Each axis Each
axis
Each axis Each
axis
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
Each axis Each
axis
Each axis All axes 1 1
Each axis All axes
*8
ACD1 ACD0
1
(Bit 1) (Bit 0)
1 0
1 0
0 0
11
1.2 Alarm list