ATO WTA Series User manual

Application & Installation
Guide
For Linear Scale
VER: 1.00

Application & Installation Guide for Linear Scale (VER1.0 )
1
Content
（Please carefully read the preface before operating ）
1. Principle and application......................................................... 4
2. Instrument Consistency........................................................... 5
3. Specification............................................................................ 5
3.1. Device Model....................................................................5
3.2.Table of Specification........................................................ 6
3.3. Output Signal....................................................................7
3.4 Structure & Installation Figure........................................ 10
4. Installation............................................................................. 12
4.1 Notice for Installation...................................................... 12
4.2 Standard of Installation....................................................16

Application & Installation Guide for Linear Scale (VER1.0 )
2
Preface the operation and maintenance
of linear scale
Requirements of the Working Conditions
1. Do not use the device in an atmosphere charged with
inflammable gases. Do not use it in the condition with
metal powder, oil, water or dust.
2. Do not disclose it in the bitter sunshine or high
temperature. the ambient working temperature should
range from 0℃~~40℃.
3. Be far away from the strong acid and alkali as well as the
chemicals.
4. Keep the signal cable of the linear scale far from the
power cords as possible.
5. Take the way of installation into consideration when
using the device in the situations of high voltage, strong
current or magnetic field. do well in isolating the
haphazard signals and avoid the disturbance of such.
Rational possesses the authority of explaining the instruction.
Rational won’t specially inform the user of the instruction.
Please contact the dealer if you have any trouble.

Application & Installation Guide for Linear Scale (VER1.0 )
3
Other Requirements
I. Offer a proper match between the installation interface and
the electric signal interface when designing and applying the
device.
II. Do not lay heavy blocks on the signal cable. Please bundleand
fix the excessive signal cable if it is overlong and do en -sure
the workers and the equipment a favorable working path.
III. Make sure that the plugs of the signal cable are well and stabl
-y plugged onto the corresponding interface.
IV. Design the application of the linear scale according to its effe
-ctive travel range, and avoid the occurrence of surpassing the
effective range and the damage of the device.
V. Do not let dust pile up on the linear scale and the read-head or
the track of the moveable body of the linear scale.
VI. Be sure to turn off the power before unplugging the connecter
of the signal cable.
Daily Maintenance
I. Check the device after uncovering the package. Please imm
-ediately contact the dealer as soon as possible if the compone
-nts are not complete or the malfunction needs settling. Do
not disassemble or modify it at your wishes.
II. Do not clean the dust on or around the read-head and the
moveable body with forced strength or air, for it may result in
the dust dropping in the interior of the moveable body.

Application & Installation Guide for Linear Scale (VER1.0 )
4
I. Warranty
In normal cases, the linear scale is guaranteed one year’s repair
since it was sold.
1. Principle and application
This linear scale is a kind of transmission amplitude grating, and the princ
-iple is, when the opposite travel main grating and the subordinate grating
occurs, the Moire grid/line is generated. This change will be transferred into
electric signal through the precise photo-electric exchanger, and then the digi
-tal signal at the relative travel is output after it is processed by the signal
processing circuit.
This product can be grated with Digital Readout and form a grating measu
-ring system and perform precise and accurate travel measurement. In additi
-ional, it can be applied in the trades of processing and measuring:
Equipment for processing: Lathe, Miller, Grinder and Electric dis-
charge machine.
Instrument for measuring: Profile projector, Video measuring instrument,
Tool maker microscope and so on.

Application & Installation Guide for Linear Scale (VER1.0 )
5
2. Instrument Consistency
1. Linear scale 1pcs
2. Application & installation 1pcs
3. Certificate 1pcs
4. Packing list 1pcs
5. Accessory pack 1pcs
3. Specification
3.1. Device Model

Application & Installation Guide for Linear Scale (VER1.0 )
6
3.2.Table of Specification
Item
WTA（thin scale）
WTB(thick
scale)
Resolution（µm）
1μ, 5μ
Effective movement L (mm)
50~1000
50~3000
Maximum
Movement（mm）
50≦L≦900
L+30
L≧950
L+50
Distance between
holes (mm)
50≦L≦900
L+132
L+136
L≧950
L+152
L+156
Length of the scale
(mm)
50≦L≦900
L+149
L+154
L≧950
L+169
L+174
Length of the signal cable (M)
3.5;(L≦150,300≦L≦950)
3.5;(L≦950)
5;(L=200,250,1000)
5;(1000≦L≦1900)
10;(2000≦L≦3000)
Thickness（mm）
21
29
Maximum velocity (M/min)
60
60
Working voltage (volt)
5±0.25
Work waste
MAX. 5V, 40mA
Reserving temperature(℃)
0~50
Working temperature(℃)
0~40

Application & Installation Guide for Linear Scale (VER1.0 )
7
3.3. Output Signal
3.3.1 Two modes for outputting signal: TTL and
RS422(differential type) signal, and the oscillogram is as
follows:
3.3.2 Referent Interface Circuit Diagram
3.3.2.1 The output signal interface circuit diagram is as follows:
A /B /R I O u tp u t s ig n a l
A /B /R I O u tp u t s ig n a l
2 6 L S 3 1
+
-

Application & Installation Guide for Linear Scale (VER1.0 )
8
3.3.2.2 Propositional pairing interface circuit diagram
3.3.3 Pin Position
-
7 4 H C T1 4
+
TTL Interface
R1 = 68 C 1= 1 000 P F
R2 = 10 0 C 2= 100 P F
R3 = 10 K
A/B/R I
R1
C1 C 2
R2
R3
SCAL E COU NTE R
-
+
SCALE
+
R2
R3
R1
-
Vcc
RS422 Interface
R1=120
R2=R3=5K
A/B/RI
A/B/RI
10
10
26LS31
ANTENNA
COUNTER
26LS32

Application & Installation Guide for Linear Scale (VER1.0 )
9
Note: The 9PD-TTLis a standard socket and the others are optional.
1
4
5
2
3
PIN C olor of signal line
+5V
B
RI
A
0V
Yellow
Orange
Brown
Black
SIGNAL
Red
Attribute Current
Input
Input
Output
Output
Output
35mA
35mA
4mA
4mA
4mA
Attribute
0V
SIGNAL
NC
PIN
A
3
4
5+5V
B
1
2
C olor of signal line
Black
Brown
Yellow
Orange
Red
Output
Output
Input
Input
4mA
4mA
Current
35mA
35mA
Attribute
Attribute
0V
SIGNAL
+5V
B
4
5RI
PIN
1
3
2
A
Yellow
Orange
Brown
Black
C olor of signal line
Red
+5V
SIGNAL
0V
PIN
A
3
4
5
RI
B
1
2
C olor of signal line
Black
Brown
Yellow
Orange
Red
4mA
Output 4mA
Input
Input
Output
Output
35mA
35mA
4mA
Current
Output
Output
Output
Input
Input
4mA
4mA
4mA
Current
35mA
35mA
Weaving net
FG
9
Attribute
FG
0V
RI
5
9
3
4
2
A
B
Weaving net
Orange
Yellow
Brown
Black
SIGNAL
+5V
PIN
1
C olor of signal line
Red 35mA
Output
Output
Output
Input
4mA
4mA
4mA
35mA
Input
Current
FG
RI
64mA
Output
7Weaving net
6FG Weaving net
4mA
Orange/White
RI
6
74mA
BYellow/White Output
8ABrown/White Output 4mA
FG
9Weaving net
-TTL socket(standard)
2) 15PD-TTL socket(opt)
3) 7-wire TTL socket(opt)
4) 6-wire TTL socket(opt)
-RS422 socket (option)