Mitsubishi Electric Melservo-J4 Instruction Manual page 97

Alarm No.: 86 Name: Network communication error
 An error occurred in the network module.
Alarm content
 An error occurred in the network communication.
Detail Detail name Cause
No.
86.1 Network (1)
communication
error 1
(2)
(3)
(4)
(5)
(6)
(7)
(8)
(9)
(10)
(11)
86.2 Network Check it with the check method for [AL. 86.1].
communication
error 2
86.3 Network
communication
error 3
86.4 Network
communication
error 4
Check method
The network module Check if the network
was disconnected. module is connected
correctly.
A network cable was Check if the network
disconnected. cable is connected
correctly.
The wiring of the Check if the wiring of
network cable was network cable is correct.
incorrect.
A network cable was Check if the network
disconnected. cable is malfunctioning.
The network was Check if the network was
disconnected by a disconnected according
wrong procedure. to the kind of network.
Data transmission from Check if data
the controller was transmission from the
interrupted for a certain controller is not
period of time. interrupted.
The setting of the Check the controller
controller is incorrect. setting.
Something near the Check the noise, ambient
device caused it. temperature, etc.
Refer to "Noise reduction
techniques" section in
each servo amplifier
instruction manual for the
noise reduction
techniques.
The network module is Replace the network
malfunctioning. module, and then check
the repeatability.
The servo amplifier is Replace the servo
malfunctioning. amplifier, and then check
the repeatability.
The controller is Replace the controller,
malfunctioning. and then check the
repeatability.
Check result
It is not connected
correctly.
It is connected correctly.
It is not connected.
It is connected.
The wiring is incorrect.
The wiring is correct.
It has a failure.
It has no failure.
It was not performed.
It was performed.
It is interrupted.
It is not interrupted.
It is incorrect.
It is correct.
There is a problem in the
surrounding.
There is no problem in
the surrounding.
It is not repeatable.
It is repeatable.
It is not repeatable.
It is repeatable.
It is not repeatable.
1 TROUBLESHOOTING FOR SERVO AMPLIFIER (DRIVE UNIT)
Action Target
Connect it correctly. [Other]
Check (2).
Turn off the control circuit [GF]
power supply of the [Other]
servo amplifier, and then
connect the network
cable correctly.
Check (3).
Wire it correctly.
Check (4).
Replace the network
cable.
Check (5).
Perform it.
Check (6).
Review the controller
communication setting.
Check (7).
Review the settings.
Check (8).
Take Countermeasures
against its cause.
Check (9).
Replace the network [Other]
module.
Check (10).
Replace the servo [GF]
amplifier. [Other]
Check (11).
Replace the controller.
1.4 Remedies for alarms
1
95