Mitsubishi Electric MELSERVO-J4 Series Instruction Manual page 415

8. TROUBLESHOOTING
Detail
No. Name
No.
8E.1
8E.2
8E.3
USB communication
error/serial
8E.4
8E communication
error/Modbus-RTU
communication error
8E.5
8E.6
8E.7
8E.8
88888 Watchdog 8888._ Watchdog
Note 1. Leave for about 30 minutes of cooling time after removing the cause of occurrence.
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.
Detail name
USB communication receive
error/Serial communication
receive error
USB communication checksum
error/Serial communication
checksum error
USB communication character
error/serial communication
character error
USB communication command
error/Serial communication
command error
USB communication data
number error/Serial
communication data number
error
Modbus-RTU communication
receive error
Modbus-RTU communication
message frame error
Modbus-RTU communication
CRC error
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
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Alarm
Stop
deactivation
Type
Cycling
CN1-22
(Note 2, Alarm
the
3) reset
(Bit 2)
power
SD
SD
SD
SD
0
SD
SD
SD
SD
DB
8 - 10
Alarm code
CN1-23 CN1-24
(Bit 1) (Bit 0)
0 0