Mitsubishi Electric Melservo-J4 Instruction Manual page 27

Alarm Detail
No. Name No. Name
8E USB 8E.4 USB
communication communication
error/serial command error/
communication serial
error/Modbus communication
RTU command error
communication
8E.5 USB
error
communication
data number
error/serial
communication
data number
error
8E.6 Modbus RTU
communication
receive error
8E.7 Modbus RTU
communication
message frame
error
8E.8 Modbus RTU
communication
CRC error
888 Watchdog 8888 Watchdog
88 ._
*1 After resolving the source of trouble, cool the equipment for approximately 30 minutes.
*2 The following shows three stop methods of DB, EDB, and SD.
DB: Stops with dynamic brake. (Coasts for the servo amplifier without dynamic brake.)
Coasts for MR-J4-03A6(-RJ) and MR-J4W2-0303B6. Note that EDB is applied when an alarm below occurs;
[AL. 30.1], [AL. 32.2], [AL. 32.4], [AL. 51.1], [AL. 51.2], [AL. 888]
SD: Forced stop deceleration
EDB: Electronic dynamic brake stop (available with specified servo motors)
Refer to the following table for the specified servo motors. The stop method for other than the specified servo motors will be DB.
Series
HG-KR
HG-MR
HG-SR
HG-AK
*3 This is applicable when [Pr. PA04] is set to the initial value. The stop system of SD can be changed to DB using [Pr. PA04].
*4 The alarm can be canceled by setting as follows:
For the fully closed loop control: set [Pr. PE03] to "1 _ _ _".
When a linear servo motor or direct drive motor is used: set [Pr. PL04] to "1 _ _ _".
*5 In some controller communication status, the alarm factor may not be removed.
*6 This alarm will occur only in the J3 compatibility mode.
*7 Reset this while all the safety observation functions are stopped.
*8 Alarm codes are outputted only from MR-J4-_A_(-RJ)/MR-J4-DU_A_(-RJ). Refer to the following for details.
Page 6 Explanation for the lists
*9 The processing and stop systems are applicable only for the multi-axis servo amplifiers (MR-J4W_-_B_). Refer to the following for
details.
Page 6 Explanation for the lists
*10 In the parallel drive system, the stop method is DB.
Stop Alarm deactivation
method
Alarm CPU
*2*3
reset reset
SD  
 
SD
 
SD
SD  
 
SD
DB  
Servo motor
HG-KR053/HG-KR13/HG-KR23/HG-KR43
HG-MR053/HG-MR13/HG-MR23/HG-MR43
HG-SR51/HG-SR52
HG-AK0136/HG-AK0236/HG-AK0336
1 TROUBLESHOOTING FOR SERVO AMPLIFIER (DRIVE UNIT)
Process Stop
ing system
Cycling
*9
system
the
*9
power
 Common All axes

Common All axes
  
  
  
 Common All axes
*8
Alarm code
ACD3 ACD2 ACD1 ACD0
(Bit 3) (Bit 2) (Bit 1) (Bit 0)
0 0 0 0
   
1.2 Alarm list
1
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