1. TROUBLESHOOTING FOR SERVO AMPLIFIER (DRIVE UNIT)
1 - 40
Alarm No.: 2A
Name: Linear encoder error 1
Alarm content
An error of the linear encoder was detected. (The details vary depending on the linear encoder
manufacturer.)
Detail
No.
Detail name
Cause
Check method
Check result
Action
Target
2A.1 Linear
encoder
error 1-1
(1) Mounting condition of
the linear encoder and
head is failure.
Adjust the positions of
the scale and head,
and then check the
repeatability.
It is not repeatable.
Use the equipment
at the adjusted
position.
[A]
[B]
[WB]
[GF]
It is repeatable.
Check (2).
(2) The external conductor
of the encoder cable is
not connected to the
ground plate of the
connector.
Check if it is
connected.
It is not connected.
Connect it correctly.
It is connected.
Check (3).
(3) Something near the
device caused it.
Check the noise,
ambient temperature,
vibration, etc.
It has a failure.
Take
countermeasures
against its cause.
It has no failure.
Check (4).
(4) An alarm of the linear
encoder was detected.
Check the content of
the alarm detail list of
the Linear Encoder
Instruction Manual.
Remove its cause
described in the
instruction manual.
Contact each
encoder
manufacturer for
how to deal with it.
2A.2 Linear
encoder
error 1-2
Check it with the check method for [AL. 2A.1].
2A.3 Linear
encoder
error 1-3
2A.4 Linear
encoder
error 1-4
2A.5 Linear
encoder
error 1-5
2A.6 Linear
encoder
error 1-6
2A.7 Linear
encoder
error 1-7
2A.8 Linear
encoder
error 1-8
Alarm No.: 2B
Name: Encoder counter error
Alarm content
Data which encoder created is failure.
Detail
No.
Detail name
Cause
Check method
Check result
Action
Target
2B.1 Encoder
counter error 1
(1) An encoder cable is
malfunctioning.
Check if the encoder
cable is disconnected
or shorted.
It has a failure.
Repair or replace
the cable.
[A]
[B]
[WB]
[GF]
It has no failure.
Check (2).
(2) The external conductor
of the encoder cable is
not connected to the
ground plate of the
connector.
Check if it is
connected.
It is not connected.
Connect it correctly.
It is connected.
Check (3).
(3) Something near the
device caused it.
Check the noise,
ambient temperature,
vibration, etc.
It has a failure.
Take
countermeasures
against its cause.
It has no failure.
Check (4).
(4) An encoder is
malfunctioning.
Replace the direct
drive motor, and then
check the
repeatability.
It is not repeatable.
Replace the direct
drive motor.
2B.2 Encoder
counter error 2
Check it with the check method for [AL. 2B.1].
Содержание MELSERVO MR-J4-B-RJ Series
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