Mitsubishi Electric MELSERVO-J4 series, Instruction Manual

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14 USING A LINEAR SERVO MOTOR
14.1 Functions and configuration
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14
USING A LINEAR SERVO MOTOR
The linear servo motor is available for servo amplifiers with software version A1 or later.
14.1
Functions and configuration
Summary
The following shows the differences between the linear servo motor and the rotary servo motor.
WARNING
• When using the linear servo motor, read "Linear Servo Motor Instruction Manual" and "Linear Encoder Instruction Manual".
Category Item Differences Remark
Linear servo
motor Rotary servo
motor
Motor pole adjustment Magnetic pole detection Required Not required
(default setting) Automatically executed at the first servo-on after
the power is turned on.
For the absolute position linear encoder, [Pr. PL01]
can disable the magnetic pole detection. The timing
of the magnetic pole detection can be changed with
[Pr. PL01].
 Page 479 For the absolute position linear
encoder
Home position return Reference home position 1048576 pulses unit
(initial value) One servo motor
revolution unit Home position return pitch can be changed with
parameter setting.

Page 481 Home position return
Absolute position
detection system Absolute position encoder
battery Not required Required The following alarms and warnings are not provided
for the linear servo motor.
• [AL. 25 Absolute position erased]
• [AL. 92 Battery cable disconnection warning]
• [AL. 9F Battery warning]
• [AL. E3 Absolute position counter warning]
Auto tuning Load to motor inertia ratio (J) Load to motor mass
ratio Load to motor
inertia ratio 
MR Configurator2
(SW1DNC-MRC2-_) Motor speed
(Data display and setting) mm/s unit r/min unit 
Test
operation
function Positioning
operation Supported Supported

Motor-less
operation None Supported

JOG operation None Supported 
Program
operation Supported Supported 