Mitsubishi Electric MELSERVO-J3W Series Instruction Manual page 322

13. USING A LINEAR SERVO MOTOR
Alarm No.42
Alarm description
Display Name
42.3 Linear servo
control error on
the thrust
detection
Alarm No.45
Alarm description
Display Name
45.1 Main circuit
abnormal
temperature
45.5 Board
temperature error
Name: Linear servo control error
Linear servo control error occurs.
Cause
(1) Resolution of the linear
encoder and the
resolution setting of the
parameter are different.
(2) Polarity of the linear
encoder is incorrect.
(Installation direction is
incorrect.)
(3) Connection of the linear
servo motor is incorrect.
(4) Initial magnetic pole
detection is not
performed.
(5) Thrust deviation reaches
the detection level.
Name: Main circuit device overheat
Inside of the servo amplifier overheats.
Cause
Same as for the rotary servo motor.
Refer to section 8.3.
Stop method: Corresponding axis stops
Checkpoint
Review the parameter Setting is incorrect.
No.PS02 and PS03
settings.
Setting is correct.
Check polarities of the The polarity is
linear encoder and the incorrect.
linear servo motor.
Normal.
Check the wiring. Problem found.
Normal.
Perform the magnetic Not reproduced.
pole detection again, and
check the reproducibility
Reproduced.
of the error.
Check the operation Deviation is large.
status.
(Calculate the deviation
between the current
command and the torque.)
Stop method: All axes stop
Checkpoint
13 - 73
Finding Action
Correct the setting.
Check (2).
Correct the setting.
Check (3).
Perform wiring
correctly.
Check (4).
Perform the magnetic
pole detection.
Check (5).
Review the operation
status.
Review the parameter
No.PS07 (Linear
servo motor control
thrust deviation error
detection level) setting
as required.
Finding Action