Mitsubishi Electric MR-J4-10A(-RJ) Instruction Manual page 361

8. TROUBLESHOOTING
No. Name
USB communication
error/serial
8E communication
error/Modbus RTU
communication error
88888 Watchdog
Note 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).
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]
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
SD: Forced stop deceleration
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. Reset this while all the safety observation functions are stopped.
6. This alarm will occur only in the J3 compatibility mode.
Detail
Detail name
No.
USB communication receive
8E.1 error/Serial communication
receive error
USB communication checksum
8E.2 error/Serial communication
checksum error
USB communication character
8E.3 error/serial communication
character error
USB communication command
8E.4 error/Serial communication
command error
USB communication data
number error/Serial
8E.5
communication data number
error
Modbus RTU communication
8E.6
receive error
Modbus RTU communication
8E.7
message frame error
Modbus RTU communication
8E.8
CRC error
8888._ Watchdog
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
Alarm
Stop
deactivation
Type
Cycling
Alarm ACD3
(Note 2,
the
3) reset (Bit 3)
power
SD
SD
SD
SD
0
SD
SD
SD
SD
DB
8 - 10
Alarm code
ACD2 ACD1 ACD0
(Bit 2) (Bit 1) (Bit 0)
0 0 0