Mitsubishi Electric MELSERVO MR-J4-B-RJ Series, Instruction Manual

Page: 30 / 174

1. TROUBLESHOOTING FOR SERVO AMPLIFIER (DRIVE UNIT)
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Alarm No.: 15 Name: Memory error 2 (EEP-ROM)
Alarm content
A part (EEP-ROM) in the servo amplifier is failure.
[RJ010]: MR-J3-T10 came off.
Detail
No.
Detail name Cause Check method Check result Action Target
15.1 EEP-ROM error
at power on
(1) EEP-ROM is
malfunctioning at power
on.
Disconnect the cables
except for the control
circuit power supply,
and then check the
repeatability. It is repeatable. Replace the servo
amplifier. [A]
[B]
[WB]
[RJ010]
[GF]
It is not repeatable. Check (2).
(2) Something near the
device caused it.
Check the power
supply for noise.
Check if the connector
is shorted. It has a failure. Take
countermeasures
against its cause.
It has no failure. Check (3).
(3) The number of write
times exceeded
100,000.
Check if parameters,
point tables, or
programs are changed
very frequently. It was changed. Replace the servo
amplifier. Change
the process to use
parameters, point
tables, and programs
less frequently after
replacement.
15.2 EEP-ROM error
during operation
(1) The MR-J3-T10 came
off during the CC-Link
IE communication.
Check if [AL. 74
Option card error 1]
occurred with alarm
history. It is occurring. Check it with the
check method for
[AL. 74].
[RJ010]
It did not occur. Check (2).
(2) EEP-ROM is
malfunctioning during
normal operation.
Check if the error
occurs when you
change parameters
during normal
operation. It occurs. Replace the servo
amplifier. [A]
[B]
[WB]
[RJ010]
[GF]
It does not occur. Check (3).
(3) A write error occurred
while adjustment results
were processed.
Check if the alarm
occurs after an hour
from power on. It takes an hour or
more. Replace the servo
amplifier.
It takes less than an
hour. Check (4).
(4) Something near the
device caused it.
Check the power
supply for noise.
Check if the connector
is shorted. It has a failure. Take
countermeasures
against its cause.
15.4 Home position
information read
error
(1) EEP-ROM is
malfunctioning at power
on.
Disconnect the cables
except for the control
circuit power supply,
and then check the
repeatability. It is repeatable. Replace the servo
amplifier. [A]
[GF]
It is not repeatable. Check (2).
(2) Multiple rotation data
saved as a home
position and read from
EEP-ROM were failure.
Check if the home
position was set
correctly. It has a failure. Make home position
setting again.
It has no failure. Check (3).
(3) Something near the
device caused it.
Check the power
supply for noise.
Check if the connector
is shorted. It has a failure. Take
countermeasures
against its cause.
It has no failure. Check (4).
(4) The number of write
times exceeded
100,000.
Check if parameters
has been used very
frequently. It was changed. Replace the servo
amplifier. Change
the process to use
parameters less
frequently after
replacement.