YASKAWA SGD7S-1R9D Product Manual page 160

5.14 Setting Unit Systems
5.14.1 Setting the Position Reference Unit
 Linear Servomotors
You can calculate the settings for the electronic gear ratio with the following equation:
When Not Using a Serial Converter Unit
Use the following formula if the linear encoder and SERVOPACK are connected directly or if a
linear encoder that does not require a Serial Converter Unit is used.
Electronic gear ratio
When Using a Serial Converter Unit
Electronic gear ratio
 Feedback Resolution of Linear Encoder
The linear encoder pitches and resolutions are given in the following table.
Calculate the electronic gear ratio using the values in the following table.
Type of
Linear
Encoder
Incre-
mental
5-44
Travel distance per reference unit (reference units) × Linear encoder resolution
B
Numerator
= =
A
Denominator
Travel distance per reference unit (reference units) × Resolution of the Serial Converter Unit
B Numerator
=
=
Denominator
A
Manufac- Linear Encoder
turer Model

LIDA48
Heidenhain
Corporation

LIF48
Renishaw
RGH22B
PLC

SR75-

SR75-

SR85-
Magnes- 
SR85-
cale Co.,
*5
SL700 , SL710
Ltd.
*5
SL720 , SL730
SQ10
Linear encoder pitch (the value from the following table)
Linear encoder pitch (setting of Pn282)
Linear
Model of Serial Con-
Encoder
verter Unit or Model of
Pitch
Interpolator
*1
[μm]
JZDP-H003-
20
JZDP-J003-
JZDP-H003-
4
JZDP-J003-
JZDP-H005-
20
JZDP-J005-
*5
80
LF
MF 80
*5
80
LF
MF 80
*5
PL101-RY
,
800
*5
MJ620-T13
MQ10-FLA
400
MQ10-GLA
Resolution Resolution
*2

256
-E
*2 0.0049 μm
 4,096
-E
*2

256
-E
*2 0.00098 μm
 4,096
-E
*2

256
-E
*2 0.0049 μm
 4,096
-E
0.0098 μm
– 8,192
– 1,024
0.0098 μm
– 8,192
– 1,024
*3
0.0977 μm
8,192
*4
*4
0.0488 μm
8,192
*4
Continued on next page.
0.078 μm
0.016 μm
0.078 μm
0.078 μm
0.078 μm