Mitsubishi Electric MELSERVO-J3W Series Instruction Manual page 264

13. USING A LINEAR SERVO MOTOR
(2) Set the linear servo motor series and linear servo motor type.
To use the linear servo motor, set the linear servo motor series and linear servo motor type with parameter
No. PA17 (Linear servo motor series setting) and No. PA18 (Linear servo motor type setting). (Refer to
section 13.6.2.)
(3) Settings of the linear encoder direction and the linear servo motor direction
Set the positive direction of linear servo motor to match with the increase direction of linear encoder
feedback using the first digit (Encoder pulse count polarity selection) of the parameter No.PC27.
(a) Parameter setting method
1) Confirm the positive direction of linear servo motor the relationship of the moving direction of linear
servo motor to commands is determined by the setting of the parameter No.PA14 as follows.
The positive/negative directions of the linear servo motor are as shown below.
Negative direction
Positive direction
LM-H2 series
2) Confirm the increase direction of linear encoder.
3) If the positive direction of the linear servo motor matches with the increase direction of linear encoder,
set the parameter No.PC27 to "
(b) Confirmation method
Confirm the positive direction of linear servo motor and the increase direction of linear encoder using the
following procedure.
1) Move the linear servo motor manually to the positive direction in the servo off status.
2) Confirm the motor speed (positive and negative) at that time using MR Configurator.
Parameter No.PC27
Parameter No.PA14
setting value
Secondary side
Secondary side
Primary side
Encoder pulse count polarity selection
0: Linear servo motor positive direction and linear encoder increase direction
1: Linear servo motor positive direction and linear encoder decrease direction
Address increase command
0 Positive direction
1 Negative direction
Primary side
Positive direction
Negative direction
LM-U2 series
0". If not, set the parameter to "
13 - 15
Moving direction of linear servo motor
Address decrease command
Negative direction
Positive direction
Negative direction
Positive direction
Table
Primary side
LM-K2 series
1".
Secondary side