Instruction manual

3 - 1
3. LINEAR ENCODER
3. LINEAR ENCODER
POINT
Always use the linear encoder cable introduced in this section. If the other
products are used, a faulty may occur.
For details of the linear encoder specifications, performance and assurance,
contact each linear encoder manufacturer.
3.1 Compatible Linear Encoder List
Scale Type Maker Model Resolution
Rated
Speed
(Note 1)
Effective
Measurement
Length
(Maximum)
Cimmunication
System
Absolute
Position
System
AT343A 2.0m/s 3000mm
AT543A-SC
0.05
m
2.5m/s 2200mm
Mitutoyo
ST741A 0.5
m 4.0m/s 3000mm
2 wire type
Absolute
type
Heidenhain LC491M 0.05
m 2.0m/s 2040mm 4 wire type
SL710
PL101R/RH
MJ830 or
MJ831
0.2
m (Note) 6.4m/s 3000mm
Sony
Manufacturing
System
Corporation
SH13
MJ830
or MJ831
0.005 m
(Note)
1.4m/s 1240mm
2 wire type
RGH26P 5.0 m 4.0m/s
RGH26Q 1.0 m 3.2m/s
Renishaw
RGH26R 0.5
m 1.6m/s
70000mm 2 wire type
LIDA485
APE391M
30040mm
Mitsubishi
serial
interface
compatibility
Incremental
type
Heidenhain
LIDA487
APE391M
0.005
m
(20/4096
m)
4.0m/s
6040mm
4 wire type
ABZ phase
differential
output
Incremental
type
Not specified
Rermissible
resolution
range
Encoder
dependent
Encoder
dependent
Differential 3
pair type
Note. Varies depending on the setting of the interpolator (MJ830/MJ831: Manufactured by Sony Manufacturing Systems Corporation).
POINT
When the linear encoder is incorrectly installed, an alarm or a positioning
mismatch may occur. In this case, refer to the following general checking
points for the linear encoder to confirm the installation, etc.
(a) Check that the gap between the head and scale is proper.
(b) Check the scale head for rolling and yawing (looseness of scale head
section).
(c) Check the scale surface for contamination and scratches.
(d) Check that the vibration and temperature are within the operating range.
(e) Check that the speed is within the permissible range without overshooting.