Mitsubishi Electric Melservo-J4 Instruction Manual page 95

Alarm No.: 84 Name: Network module initialization error
 The network module is not connected.
Alarm content
 An error occurred at initialization of the network module.
Detail Detail name Cause
No.
84.1 Network module (1)
undetected
error
(2)
(3)
(4)
84.2 Network module (1)
initialization
error 1
(2)
(3)
(4)
(5)
(6)
(7)
(8)
84.3 Network module Check it with the check method for [AL. 84.2].
initialization
error 2
Check method
The network module Check if the network
was disconnected. module is connected
correctly.
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 network module Check if the network
was disconnected. module is connected
correctly.
A network module, Check if the network
which is not compatible module is compatible
with the servo amplifier, with the servo amplifier.
has been connected.
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.
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.
Check result
It is not connected
correctly.
It is connected correctly.
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 not connected
correctly.
It is connected correctly.
It is not compatible.
It is compatible.
It is not connected.
It is connected.
The wiring is incorrect.
The wiring is correct.
It has a failure.
It has no failure.
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.
1 TROUBLESHOOTING FOR SERVO AMPLIFIER (DRIVE UNIT)
Action Target
Connect it correctly. [Other]
Check (2).
Take countermeasures
against its cause.
Check (3).
Replace the network
module.
Check (4).
Replace the servo
amplifier.
Connect it correctly.
Check (2).
Replace with a network
module compatible with
the servo amplifier.
Check (3).
Connect it correctly.
Check (4).
Wire it correctly.
Check (5).
Replace the network
cable.
Check (6).
Take countermeasures
against its cause.
Check (7).
Replace the network
module.
Check (8).
Replace the servo
amplifier.
1.4 Remedies for alarms
1
93