Mitsubishi Electric MELSERVO-J4 Instruction Manual page 91

1. TROUBLESHOOTING FOR SERVO AMPLIFIER (DRIVE UNIT)
Alarm No.: 84 Name: Network module initialization error
Alarm content
Detail
Detail name
No.
84.2 Network (1) The network module
module
initialization
error 1
(2) A network module,
(3) A network cable was
(4) The wiring of the
(5) A network cable was
(6) Something near the
(7) The network module is
(8) The servo amplifier is
84.3 Network Check it with the check method for [AL. 84.2].
module
initialization
error 2
The network module is not connected.
An error occurred at initialization of the network module.
Cause
Check if the network
was disconnected. module is connected
correctly.
Check if the network
which is not compatible module is compatible
with the servo amplifier, with the servo
has been connected. amplifier.
Check if the network
disconnected. cable is connected
correctly.
Check if the wiring of
network cable was network cable is
incorrect. correct.
Check if the network
disconnected. cable is
malfunctioning.
Check the noise,
device caused it. ambient temperature,
etc. Refer to section
11.14 for the noise
reduction techniques.
Replace the network
malfunctioning. module, and then
check the
repeatability.
Replace the servo
malfunctioning. amplifier, and then
check the
repeatability.
Check method Check result
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.
It has a failure.
It has no failure.
It is not repeatable.
It is repeatable.
It is not repeatable.
1 - 84
Action Target
Connect it correctly. [Other]
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.