Instruction manual

5 - 3
5. OPERATION AND FUNCTIONS
(c) If the parameter No. PC27 is set to " 0" and the positive direction of linear servo motor matches
with the increase direction of linear encoder, the motor speed will be a positive value by making the
linear servo motor work to the positive direction. If the positive direction of linear servo motor does not
match with the increase direction of linear encoder, the motor speed will be a negative value. If the
parameter No.PC27 is set to "
1" and the positive direction of linear servo motor matches with the
increase direction of linear encoder, the motor speed will be a negative value by making the linear servo
motor work to the positive direction.
5.1.3 Setting of the linear encoder resolution
Set the ratio to the linear encoder resolution using the parameter No. PS02 (Linear encoder resolution setting
numerator) and parameter No. PS03 (Linear encoder resolution setting denominator).
POINT
When using this parameter, turn the power off once after setting the
parameter No.PA19 to "
D", and then turn it on again.
After setting this parameter, turning the power off once and then turning it on
again makes the setting valid.
(1) Parameter setting
Set the value as the following equation.
Parameter No. PS02 (Linear encoder resolution setting numerator)
Parameter No. PS03 (Linear encoder resolution setting denominator)
=
Linear encoder resolution [ m]
(2) Parameter setting example
When the linear encoder resolution is 0.5
m
Parameter No. PS02
Parameter No. PS03
Linear encoder resolution
0.5 m
2
1
=
=
=
The following shows the simplified chart for the setting value of parameter Nos.PS02 and PS03.
Linear encoder resolution ( m)
0.01 0.02 0.05 0.1 0.2 0.5 1.0 2.0
Parameter No.
PS02
1 1 1 1 1 1 1 2
Setting
value
Parameter No.
PS03
100 50 20 10 5 2 1 1
POINT
When setting the wrong value to the parameter Nos. PS02 and PS03, they
may not operate properly.
Servo alarm (27 and 42) may occur at positioning operation or magnetic pole
detection.