Mitsubishi Electric Melservo-J4 Instruction Manual page 100

Alarm No.: 8D
Alarm content
Detail Detail name
No.
8D.5 Master station
setting error 2
8D.6 CC-Link IE
communication
error 3
8D.7 CC-Link IE
communication
error 4
8D.8 CC-Link IE
communication
error 5
8D.9 Synchronization
error 1
8D.A Synchronization
error 2
Alarm No.: 8E
Alarm content
Detail Detail name
No.
8E.1 USB
communication
receive error/
serial
communication
receive error
8E.2 USB
communication
checksum error/
serial
communication
checksum error
1 TROUBLESHOOTING FOR SERVO AMPLIFIER (DRIVE UNIT)
98
1.4 Remedies for alarms
Name: CC-Link IE communication error
 MR-J3-T10 came off.
 An error occurred in CC-Link IE communication.
Cause Check method
(1) A reserved station has Check if a reserved
been selected by the station is selected.
master station, and the
cyclic communication
has stopped.
Check it with the check method for [AL. 8D.1].
(1) The transmission status Check the noise, ambient
of the CC-Link IE temperature, etc.
communication is
abnormal.
(2) MR-J3-T10 is Replace the MR-J3-T10,
malfunctioning. and then check the
repeatability.
(3) The servo amplifier is Replace the servo
malfunctioning. amplifier, and then check
the repeatability.
(4) The master station is Check if the master
malfunctioning. station is malfunctioning.
Check it with the check method for [AL. 8D.7].
Check it with the check method for [AL. 8D.1].
Name: USB communication error/serial communication error/Modbus RTU communication error
 A communication error occurred between the servo amplifier and a personal computer/controller.
 An error occurred in USB communication, serial communication (Mitsubishi Electric general-purpose
AC servo protocol), or Modbus RTU communication.
Cause Check method
(1) The setting of the Check the setting of the
personal computer, etc. personal computer, etc.
is incorrect.
(2) A communication cable Check the
is malfunctioning. communication cable,
and then check the
repeatability.
(3) The servo amplifier is Replace the servo
malfunctioning. amplifier, and then check
the repeatability.
(1) The setting of the Check the setting of the
personal computer, etc. personal computer, etc.
is incorrect.
Check result Action
It is selected. Cancel the reserved
station.
It has a failure. Take countermeasures
against its cause.
It has no failure. Check (2).
It is not repeatable. Replace the MR-J3-T10.
It is repeatable. Check (3).
It is not repeatable. Replace the servo
amplifier.
It is repeatable. Check (4).
It has a failure. Replace the master
station.
Check result Action
It is incorrect. Review the settings.
It is correct. Check (2).
It is not repeatable. Replace the
communication cable.
It is repeatable. Check (3).
It is not repeatable. Replace the servo
amplifier.
It is incorrect. Review the settings.
Target
[RJ010]
[RJ010]
[GF]
[RJ010]
[RJ010]
[GF]
Target
[A]
[B]
[WB]
[RJ010]
[GF]