YASKAWA SGD7S-1R9D Product Manual page 161

Type of
Manufac-
Linear
turer
Encoder
LIC4100 Series
LIC2100 Series
Heidenhain
Corporation
LC115
LC415
ST781A/ST781AL
ST782A/ST782AL
ST783/ST783AL
ST784/ST784AL
Mitutoyo
Corporation
ST788A/ST788AL
ST789A/ST789AL
ST1381
ST1382
EL36Y-
Absolute
EL36Y-
Renishaw
EL36Y-
PLC
RL36Y-
RL36Y-
SR77-
SR77-
SR87-
SR87-
Magnes-
SQ47/SQ57-
cale Co.,

Ltd.
SQ47/SQ57-

SQ47/SQ57-

SQ47/SQ57-

*1.
These are reference values for setting SERVOPACK parameters. Contact the manufacturer for actual linear
encoder scale pitches.
*2.
This is the model of the Serial Converter Unit.
*3.
This is the model of the Head with Interpolator.
*4.
This is the model of the Interpolator.
*5.
If you use an encoder pulse output with this linear encoder, the setting range of the encoder output resolution
(Pn281) is restricted. Refer to the following section for details on the encoder output resolution (Pn281).
6.5.2 Setting for the Encoder Divided Pulse Output on page 6-23
Resolution
Information
You can calculate the resolution that is used inside the SERVOPACK (i.e., the travel distance per
feedback pulse) with the following formula.
Resolution (travel distance per feedback pulse) =
The SERVOPACK uses feedback pulses as the unit to control a Servomotor.
Linear encoder pitch
Linear
Linear Encoder Encoder
Model Pitch
*1
[μm]
20.48
204.8
409.6
40.96
40.96
256
256
51.2
51.2
51.2
25.6
5.12
0.512
 
050F 12.8
 
100F 25.6
 
500F 128
 
050 12.8
 
001 0.256
*5
 80
LF

MF 80
*5
 80
LF

MF 80
 
S F
20.48
 
T F
 
A F
40.96
 
F F
Resolution of Serial Converter Unit or linear encoder
Linear encoder pitch
=Distance for one cycle of the analog voltage
feedback signal from the linear encoder
5.14 Setting Unit Systems
5.14.1 Setting the Position Reference Unit
Continued from previous page.
Model of Serial Con-
verter Unit or Model of Resolution Resolution
Interpolator
*4
4,096
EIB3391Y
*4
EIB3391Y
*4
EIB3391Y
*4
4,096
EIB3381Y
*4
EIB3391Y
–
–
–
–
–
–
–
–
–
–
–
–
–
– 8,192
– 1,024
– 8,192
– 1,024
–
–
Linear encoder pitch
0.005 μm
0.05 μm
4096
0.1 μm
4096
0.01 μm
0.01 μm
4096
0.5 μm
512
0.5 μm
512
0.1 μm
512
0.1 μm
512
0.1 μm
512
0.05 μm
512
0.01 μm
512
0.001 μm
512
0.05 μm
256
0.1 μm
256
0.5 μm
256
0.05 μm
256
0.001 μm
256
0.0098 μm
0.078 μm
0.0098 μm
0.078 μm
0.005 μm
4096
0.01 μm
4096
5-45
5