Mitsubishi Electric MELSERVO-J5 User Manual page 378

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. PL01.2] according to the linear encoder resolution.
Servo parameter
PL01.2
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]
Pr. PL01.2 Stop interval
[pulse]
0 8192
1 131072
2 262144
3 1048576
4 4194304
5 16777216
6 67108864
7 1073741824
Pr. PL01.2 Stop interval
[pulse]
0 8192
1 131072
2 262144
3 1048576
4 4194304
5 16777216
6 67108864
7 1073741824
• 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. PC28.3
Linear encoder multipoint Z-phase input function selection].
10 USING A LINEAR SERVO MOTOR
376
10.4 Basic functions
Description
Homing stop interval setting
13
0: 2 (= 8192) pulses
17
1: 2 (= 131072) pulses
18
2: 2 (= 262144) pulses
20
3: 2 (= 1048576) pulses
22
4: 2 (= 4194304) pulses
24
5: 2 (= 16777216) pulses
26
6: 2 (= 67108864) pulses
30
7: 2 (= 1073741824) pulses
20
Initial value: 3 (2 (= 1048576) pulses)
Linear encoder resolution
0.001 μm 0.005 μm
0.008 0.041
0.131 0.655
0.262 1.311
1.049 5.243
4.194 20.972
(Recommended
value)
16.777 83.886
(Recommended
value)
67.109 335.544
1073.742 5368.700
Linear encoder resolution
0.1 μm 0.2 μm
0.819 1.638
13.107 26.214
(Recommended (Recommended
value) value)
26.214 52.429
104.858 209.715
419.430 838.861
1677.722 3355.443
6710.886 13421.773
107374.182 214748.364
0.01 μm 0.02 μm
0.082 0.164
1.311 2.621
2.621 5.243
10.486 20.972
(Recommended (Recommended
value) value)
41.943 83.886
167.772 335.544
671.089 1342.177
10737.418 21474.836
0.5 μm 1 μm
4.096 8.192
(Recommended (Recommended
value) value)
65.536 131.072
131.072 262.144
524.288 1048.576
2097.152 4194.304
8388.608 16777.216
33554.432 67108.864
536870.912 1073741.824
0.05 μm
0.410
6.554
13.107
(Recommended
value)
52.429
209.715
838.861
3355.443
53687.091
2 μm
16.384
(Recommended
value)
262.144
524.288
2097.152
8388.608
33554.432
134217.728
2147483.648