338
10 USING A LINEAR SERVO MOTOR
10.4 Basic functions
Homing setting method
■
Incremental linear encoder
• Interval setting of homing
When an incremental linear encoder is used, the home position is the position per 1048576 pulses (changeable with [Pr.
PL01.2 Homing stop interval setting]) with reference to the linear encoder home position (reference mark) that passed through
first after a homing start. Change the setting value of [Pr. PL01] according to the linear encoder resolution.
The following shows the relation between the stop interval at the homing and the linear encoder resolution. For example,
when the linear encoder resolution is 0.001 µm and [Pr. PL01.2 Homing stop interval setting] = "5" (16777216 pulses), the
linear encoder resolution is 16.777 mm.
[Unit: mm]
• Multipoint Z-phase input - Function selection
When two or more reference marks exist during the full stroke of the linear encoder, select "1" (enabled) with [Pr. PC17.1
Linear encoder multipoint Z-phase input function selection].
Servo parameter
Description
PL01.2
Homing stop interval setting
0: 2
13
(= 8192) pulse
1: 2
17
(= 131072) pulse
2: 2
18
(= 262144) pulse
3: 2
20
(= 1048576) pulse
4: 2
22
(= 4194304) pulse
5: 2
24
(= 16777216) pulse
6: 2
26
(= 67108864) pulse
7: 2
30
(= 1073741824) pulse
Initial value: 3 (2
20
(= 1048576) pulse)
Pr. PL01.2
Stop interval
[pulse]
Linear encoder resolution
0.001
μ
m
0.005
μ
m
0.01
μ
m
0.02
μ
m
0.05
μ
m
0
8192
0.008
0.041
0.082
0.164
0.410
1
131072
0.131
0.655
1.311
2.621
6.554
2
262144
0.262
1.311
2.621
5.243
13.107
(Recommended
value)
3
1048576
1.049
5.243
10.486
(Recommended
value)
20.972
(Recommended
value)
52.429
4
4194304
4.194
20.972
(Recommended
value)
41.943
83.886
209.715
5
16777216
16.777
(Recommended
value)
83.886
167.772
335.544
838.861
6
67108864
67.109
335.544
671.089
1342.177
3355.443
7
1073741824
1073.742
5368.700
10737.418
21474.836
53687.091
Pr. PL01.2
Stop interval
[pulse]
Linear encoder resolution
0.1
μ
m
0.2
μ
m
0.5
μ
m
1
μ
m
2
μ
m
0
8192
0.819
1.638
4.096
(Recommended
value)
8.192
(Recommended
value)
16.384
(Recommended
value)
1
131072
13.107
(Recommended
value)
26.214
(Recommended
value)
65.536
131.072
262.144
2
262144
26.214
52.429
131.072
262.144
524.288
3
1048576
104.858
209.715
524.288
1048.576
2097.152
4
4194304
419.430
838.861
2097.152
4194.304
8388.608
5
16777216
1677.722
3355.443
8388.608
16777.216
33554.432
6
67108864
6710.886
13421.773
33554.432
67108.864
134217.728
7
1073741824
107374.182
214748.364
536870.912
1073741.824
2147483.648
Summary of Contents for Melservo-J5 MR-J5 Series
Page 2: ......
Page 441: ...12 USING A FULLY CLOSED LOOP SYSTEM 12 7 Absolute position detection system 439 12 MEMO ...
Page 445: ......