1. TROUBLESHOOTING FOR SERVO AMPLIFIER (DRIVE UNIT)
1 - 52
Alarm No.: 42
Name: Servo control error (for linear servo motor and direct drive motor)
Alarm content
A servo control error occurred.
Detail
No.
Detail name
Cause
Check method
Check result
Action
Target
42.1 Servo
control
error by
position
deviation
(1) The linear encoder
resolution setting
differs from the setting
value.
Check the setting of
[Pr. PL02] and [Pr.
PL03].
The setting is
incorrect.
Set it correctly.
[A]
[B]
[WB]
[GF]
The setting is
correct.
Check (2).
(2) The direction of
mounting linear encoder
is incorrect.
Check polarities of the
linear encoder and the
linear servo motor.
The mounting
direction is incorrect.
Mount it correctly.
Review the "encoder
pulse count polarity
selection" setting of
the parameter as
required.
[A]: [Pr. PC45]
[B] [WB] [GF]:
[Pr. PC27]
The
mounting
direction is correct.
Check (3).
(3) The connection of the
servo motor is
incorrect.
Check the wiring.
The wiring is
incorrect.
Connect it correctly.
The wiring is
correct.
Check (4).
(4) The initial magnetic
pole detection was not
executed.
Execute the magnetic
pole detection, and
then check the
repeatability.
It is not repeatable.
Execute the
magnetic pole
detection.
It is repeatable.
Check (5).
(5) The position deviation
exceeded the detection
level.
Check the value of
droop pulses.
The deviation is
large.
Review the operation
status. Review the
[Pr. PL05] setting
depending on
circumstances.
42.2 Servo
control
error by speed
deviation
(1) The linear encoder
resolution setting differs
from the setting value.
Check the setting of
[Pr. PL02] and [Pr.
PL03].
The setting is
incorrect.
Set it correctly.
The setting is
correct.
Check (2).
(2) The direction of
mounting linear encoder
is incorrect.
Check polarities of the
linear encoder and the
linear servo motor.
The mounting
direction is incorrect.
Mount it correctly.
Review the "encoder
pulse count polarity
selection" setting of
the parameter as
required.
[A]: [Pr. PC45]
[B] [WB] [GF]:
[Pr. PC27]
The
mounting
direction is correct.
Check (3).
(3) The connection of the
servo motor is incorrect.
Check the wiring.
The wiring is
incorrect.
Connect it correctly.
The wiring is correct. Check (4).
(4) The initial magnetic
pole detection was not
executed.
Execute the magnetic
pole detection, and
then check the
repeatability.
It is not repeatable.
Execute the
magnetic pole
detection.
It is repeatable.
Check (5).
(5) The speed deviation
exceeded the detection
level.
Calculate the deviation
between the speed
command and actual
speed.
The deviation is
large.
Review the operation
status. Review the
[Pr. PL06] setting
depending on
circumstances.
Содержание MELSERVO MR-J4-B-RJ Series
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