1. TROUBLESHOOTING FOR SERVO AMPLIFIER (DRIVE UNIT)
1 - 74
Alarm No.: 72
Name: Load-side encoder normal communication error 2
Alarm content
The load-side encoder detected an error signal.
Detail
No.
Detail name
Cause
Check method
Check result
Action
Target
72.2 Load-side
encoder data
update error
(1) A load-side encoder is
malfunctioning.
Replace the load-side
encoder, and then
check the
repeatability.
It is not repeatable.
Replace the load-
side encoder.
[A]
[B]
[WB]
[GF]
It is repeatable.
Check (2).
(2) Something near the
device caused it.
Check the noise,
ambient temperature,
etc.
It has a failure.
Take
countermeasures
against its cause.
72.3 Load-side
encoder data
waveform error
Check it with the check method for [AL. 72.2].
72.4 Load-side
encoder non-
signal error
(1) A signal of the load-
side encoder has not
been inputted.
Check if the load-side
encoder cable is
wired correctly.
It has a failure.
Review the wiring.
[A]
[B]
[WB]
[GF]
It has no failure.
Check (2).
(2) Something near the
device caused it.
Check the noise,
ambient temperature,
etc.
It has a failure.
Take
countermeasures
against its cause.
72.5 Load-side
encoder
hardware error 1
Check it with the check method for [AL. 72.2].
72.6 Load-side
encoder
hardware error 2
72.9 Load-side
encoder data
error 2
Check it with the check method for [AL. 72.1].
Alarm No.: 74
Name: Option card error 1
Alarm content
MR-J3-T10 came off.
MR-J3-T10 is not properly recognized.
Detail
No.
Detail name
Cause
Check method
Check result
Action
Target
74.1 Option
card
error 1
(1) The MR-J3-T10 came
off during the CC-Link
IE communication.
Check if the MR-J3-
T10 is mounted
correctly.
It is not mounted
correctly.
Install it correctly.
[RJ010]
It is mounted
correctly.
Check (2).
(2)
MR-J3-T10
is
malfunctioning.
Replace the MR-J3-
T10, and then check
the repeatability.
It is not repeatable.
Replace the MR-J3-
T10.
It is repeatable.
Check (3).
(3) The servo amplifier is
malfunctioning.
Replace the servo
amplifier, and then
check the
repeatability.
It is not repeatable.
Replace the servo
amplifier.
74.2 Option
card
error 2
Check it with the check method for [AL. 74.1].
74.3 Option
card
error 3
74.4 Option
card
error 4
74.5 Option
card
error 5
Содержание MELSERVO MR-J4-B-RJ Series
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