Instruction manual

5 - 2
5. OPERATION AND FUNCTIONS
5.1.2 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 feed back
using the first digit (Encoder pulse count polarity selection) of the parameter No. PC27.
Parameter No. PC27
Encoder pulse count polarity selection
0: Linear servomotor positive direction and linear encoder increase direction
1: Linear servomotor positive direction and linear encoder decrease direction
(1) Parameter setting method
(a) 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:
Moving direction of linear servo motor Parameter No. PA14
setting value
Address increase command Address decrease command
0 Positive direction Negative direction
1 Negative direction Positive direction
The positive/negative directions of the linear servo motor are as shown below.
Positive direction
Negative direction
Primary side
Secondary side
Primary side
Secondary side
Positive direction
Negative direction
LM-H2 series LM-U2 series
(b) Confirm the increase direction of linear encoder.
(c) If the positive direction of the linear servo motor matches with the increase direction of linear encoder,
set the parameter No. PC27 to "
0". If not, set the parameter to " 1".
(2) Confirmation method
Confirm the positive direction of linear servo motor and the increase direction of linear encoder using the
following procedure.
(a) Move the linear servo motor manually to the positive direction in the servo off status.
(b) Confirm the motor speed (positive and negative) at that time using MR Configurator.