ATOM miniature encoder system - PEI-FRANCE.com · 2014-06-02 · (Pitch tol. ±1°) End reference mark head orientation Mid reference mark head orientation Technical specifications

Data sheetL-9517-9563-01-D

ATOM™ miniature encoder system

• Miniature package: 8.35 mm x 12.7 mm x 20.5 mm (7.3 mm x 12.7 mm x 20.5 mm for FPC version)

• Highest signal stability and dirt immunity in its class due to filtering optics

• Long-term stability provided by integral Auto Gain Control and Auto Offset Control

• Low Sub-Divisional Error (SDE) and jitter

• Easy installation and diagnostics using the set-up LED on the readhead

• Fast, simple calibration at the push of a button

• Auto-phase optical reference mark

• Available in 20 µm and 40 µm scale pitch versions

• Analogue output direct from the readhead

• Multiple interpolation options, with resolutions to 1 nm

• Range of high accuracy rotary and linear scales

ATOM is the world’s first miniature encoder with filtering optics, providing improvements in dirt immunity, signal stability and reliability for linear and rotary applications.ATOM features a number of other advances that help maintain signal stability, including integral Auto Gain Control and Auto Offset Control, along with a highly reliable IRED light source, making the product suitable for use in applications demanding quality and dependability.

The miniature readhead is available in 2 formats: hi-flex cable output or Flexible-Printed Circuit (FPC) output. The FPC version helps reduce overall package size, with a reduced Z-height and easy cable routing.

ATOM is available with a range of high-accuracy optical linear and rotary scales, including conventional glass spars, ‘unbreakable’ stainless steel tape scales and glass discs. Installation has been simplified by an intuitive set-up LED on the readhead that indicates signal level. Optical reference mark phasing and incremental signal optimisation can be achieved with the simple press of a button.

ATOM is suitable for use in a variety of applications that require compact size, including laser scanners, CMM arms, semiconductor manufacturing, compact linear motors/motion stages, small DDR torque motors, galvanometers and microscope stages.

ATOM – miniaturisation without compromise.

Data sheetATOM encoder system

2

Product range

u 20 µm and 40 µm readheads with high-flex cable: for general purpose applications. Superior quality cable tested to 20 million flex cycles.

u 20 µm and 40 µm readheads with FPC cable: side exit FPC cable allows the smallest overall package size.

u Stainless steel tape scale (RTLF): high-accuracy scales with graduations directly marked onto the steel tape surface. Available on reels for cut-to-suit flexibility.

u Glass linear spars (RCLC): conventional glass scales, available in lengths up to 130 mm.

u Glass discs (RCDM): high-accuracy rotary scales with outer diameters down to 17 mm.

u Need improved positional stability and repeatability? ATOM has low noise (jitter), allowing users to increase servo-loop gain without instability, whilst reaping other dynamic performance benefits such as faster settling times and higher acceleration.

High performance

u Need higher speed? ATOM is the fastest encoder in its class, with maximum speeds up to 20 m/s and a range of high-speed interpolation options for digital versions.

u Need higher accuracy? ATOM offers linear tape scales with specified overall accuracy to ±5 µm/m @20 °C, without the need for 2-point compensation that competitor encoders require.

u Need smoother velocity control? Reduce velocity ripple, improve scanning performance, reduce blur on vision systems and image capturing – all thanks to ATOM’s superior optical scheme and integral Auto Offset Control (AOC).

System features

Lissajous stability

ATOM features a miniaturized version of Renishaw’s unique filtering optics that are used in the TONiC encoder range.

This optical scheme is tuned to a specific spatial frequency, so it rejects other harmonics, including those caused by dirt or other contaminants.

The result is a Lissajous with high purity, that retains its fidelity even when the scale is exposed to contamination: ideal for applications where reliability is critical.

Err

or

(µm

)

Position (mm)

3

2

1

0

-1

-2

-30 100 200 300 400 500 600 700 800 900 1000

±1.

8 µm

Typical accuracy for a 1 m length of RTLF 20 µm scale


3

ATOM interface options

ATOM readheads are available in three versions all giving industry standard analogue output:

u High flex cable terminated with a 15 way D-type connector for high-volume users requiring analogue outputs.

NOTE: A CAL button is not included on this option. Refer to installation guide for details on how to calibrate.

u High flex cable terminated with a T-type interboard connector for use with ACi/Ri/Ti interfaces.

u FPC connector for use with ACi interface or direct connection to user electronics.

ACi interfaces are a range of high performance, miniature, open interpolator subsystems. They bring unparalleled price-performance benefits to today’s motion systems that need fine resolution coupled to high speed performance in an ultra compact, open format, small footprint solution and have provision for calibrating the system. Digital interpolation down to 10 nm at up to 12 MHz clocked output is available. FPC or cable input versions available.

Ri interfaces are contained within an industry standard 15 way D-type connector shell, including CAL button. They offer digital interpolation down to 50 nm (clocked) and 0.5 µm (non-clocked). Analogue variants are also available.

Ti interfaces are designed for applications that require higher speed, lower SDE, digital interpolation down to 1 nm resolution and include a CAL button. Clocked outputs have been optimised for speed and performance at all resolutions for industry-standard controllers. Analogue variants are also available.

4


ATOM readhead dimensions Dimensions and tolerances in mm

No hole here on FPC variant

6.45 (Cabled version)

5.4. (FPC version)

1.4 (40 µm version) 1.9 (20 µm version)

20.5 8.5

16.5

10.25

12.7 8.7

2

4.15

4.85

3 off mounting holes Ø2.5 min through

Ø9 max

FPC cable

Set-up LED*

Datum face

Readhead datum faces

5 min

Ø3.5 max

>R20 Dynamic bend radius >R10 Static bend radius

2

4.4

Readhead / scale orientation

Identification marks for readhead manufacture only. Notches will vary depending on readhead type.

Maximum speed 40 µm system – 20 m/s

20 µm system – 10 m/s

Readhead output signals

*All power connections can be used either to minimise voltage drop down the cable or incorporate voltage sensing. =Only available on interboard connector

15 way D-type plug Interboard connector

1

2

13

14

FPC connection

Pin 1

JST connector

Pin 1

Pin 12

Power*

Incremental

Reference mark

Set-up

Remote CAL

Shield

Do not connect

Function Signal

15 way D-type

(D)

Cosine

Sine

Colour

Brown

White

Red

Blue

Yellow

Green

Violet

Grey

Clear

Orange

Screen

–

5 V

0 V

V1

V2

V0

+

-

+

-

+

-

VX

CAL

–

–

Pin

Interboard connector

(T)

FPC (F)

Pin Pin

4

13

9

5

12

14

2

8

6

10

Cable ferrule

1, 3, 7, 11

9, 10

3, 6, 11, 14

5

4

2

1

13

12

16

15

Readhead body

7, 8

JST= (on interboard)

Pin

11

5

4

3

7

6

10

9

12

8

Cable ferrule

1, 2

4, 5

12, 13

9

1

10

2

3

11

6

14

Case

7, 8, 15

*On FPC variants the Set-up LED cut-out is circular.


5

RTLF tape scale installation drawing Dimensions and tolerances in mm

0.39

0.18

0.22

(Roll tol. ±1°)

40 µm version (Yaw tol. ±1°)

20 µm version (Yaw tol. ±0.5°)

8

5 19

Scale thickness 0.41

FPC cable

Scale datum edge

Reference markReference mark

Datum clamp

Set-up LED1.02 ±0.25

0.36

(Pitch tol. ±1°)

Rideheight (for calibration): 2.5 ±0.08 (40 µm version)

2.5 ±0.04 (20 µm version)

Operating rideheight: 2.5 ±0.11 (40 µm version)

2.5 ±0.055 (20 µm version)

Technical specifications

Material Hardened and tempered martensitic stainless steel fitted with a

self-adhesive backing tape

Form 0.41 mm x 8 mm (H x W) (including adhesive)

Scale pitch 20 µm and 40 µm

Datum fixing Adhesive datum clamp (A-9585-0028) secured with Loctite® 435

Reference mark Auto-phase optical reference mark repeatable to unit of resolution throughout

specified speed and temperature range

Customer de-selectable reference marks at 50 mm spacing

Reference mark in the centre of scale for lengths <100 mm

Accuracy 40 µm (high accuracy) ±5 µm/m

40 µm ±15 µm/m

20 µm ±5 µm/m

Coefficient of thermal expansion ~10.6 µm/m/°C*

Length 10 mm to 90 mm in 10 mm increments

100 mm to 10 m in 50 mm increments=

Measuring length = Overall length - 7 mm

Mass 12.2 g/m

5050

Forward direction of readhead relative to scale

For detailed installation drawings refer to www.renishaw.com.

*Substrate coefficient of thermal expansion does not need to match that of the scale. =Maximum recommended axis length 1 m for 20 µm systems.

For further information contact your local Renishaw representative.

6


RCLC glass spar installation drawing Dimensions and tolerances in mm

A-9404-4018

0.39

0.18

0.22

(Roll tol. ±1°)

40 µm version (Yaw tol. ±1°)

20 µm version (Yaw tol. ±0.5°)

6.35

6.82 ±0.45

Scale thickness 1.1 ±0.1

FPC cable

Scale datum edge

Readhead datum face

Set-up LED

0.36

(Pitch tol. ±1°)

End reference mark head orientation

Mid reference mark head orientation


Material Soda lime glass

Form 1.1 mm x 6.35 mm (H x W) (including adhesive)

Scale pitch 20 µm and 40 µm

Datum fixing Fillet of adhesive (A-9531-0342) on one side of the scale

Reference mark Either mid or one end of travel, determined by orientation of the readhead

Accuracy ±3 µm

Coefficient of ~8 µm/m/°C thermal expansion

Length (mm)

Mass 13.9 g/m

L/2

1.42 ±0.45

Adhesive datum clamp ( length 8 - 16 – width 1 - 5 )

5



Reference mark

Reference mark

Overall length (L) 18 30 55 80 100 105 130

Measuring length 11 23 48 73 93 98 123

For detailed installation drawings refer to www.renishaw.com.

Rideheight (for calibration): 2.5 ±0.08 (40 µm version)

2.5 ±0.04 (20 µm version)

Operating rideheight: 2.5 ±0.11 (40 µm version)

2.5 ±0.055 (20 µm version)

7



Material Soda lime glass

Form 2.3 mm thick

Reference mark Single reference mark

Graduation accuracy

Coefficient of ~8 µm/m/°C thermal expansion

Nominal outer diameter 40 µm 17, 20, 25, 27, 30 ,36, 50, 56, 68, 108(mm)

20 µm 30, 36, 50, 56, 68, 108

RCDM rotary disc installation drawing Dimensions and tolerances in mm

Disc size

(mm)

Line count

20 µm version

20 µm version

40 µm version

40 µm version

D1 (mm)

D2 (mm)

D3 (mm)

A (mm)

17

20

25

27

30

36

50

56

68

108

–

–

–

–

4 096

5 000

7 200

8 192

10 000

16 384

1 024

1 250

1 650

1 800

2 048

2 500

3 600

4 096

5 000

8 192

3.275

3.275

6.46

9.625

12.8

12.8

25.5

25.5

25.5

50.9

8.10

11.00

16.10

18.00

21.15

26.90

40.90

47.25

58.55

99.20

16.9

19.9

24.9

26.9

29.9

35.9

49.9

55.9

67.9

107.9

10.63

12.07

14.62

15.57

17.15

20.03

27.03

30.19

35.94

56.26

Radial tolerance E (mm)

20 µm version

40 µm version

–

–

–

–

0.1

0.125

0.125

0.125

0.15

0.2

–

–

–

–

0.075

0.075

0.075

0.1

0.125

0.225

0.1

0.1

0.125

0.125

0.125

0.175

0.2

0.2

0.2

0.2

0.1

0.1

0.075

0.075

0.125

0.2

0.2

0.225

0.3

0.3

Longitudinal tolerance F (mm)Optical diameter

(mm)

13.04

15.92

21.01

22.92

26.08

31.83

45.84

52.15

63.66

104.30

10.25 ± 'F'Set-up LED

Alignment band

Reference mark

D3

D2

D1 0.22

(Roll tol. ±1°)

'A' ± 'E'

0.36

(Pitch tol. ±1°)

For detailed information see ATOM rotary installation guide.

2.3 ±0.1

Glass disc

Black film on reverse of disc underneath incremental and reference track.

See installation guide for more details.

Forward direction of disc

(increasing count)FPC cable

Centre of alignment band

Centre of alignment band

Disc size (mm) 17 20 25 27 30 36 50 56 68 108

Graduation accuracy 15.81 12.95 9.82 9.0 7.91 6.49 4.5 3.95 3.24 2.78 (arc seconds)

Rideheight (for calibration)*: 2.5 ±0.08 (40 µm version)

2.5 ±0.04 (20 µm version)

*Operating rideheight: 2.5 ±0.11 (40 µm version)

2.5 ±0.055 (20 µm version)

8


Dimensions and tolerances in mmACi interface dimension drawingFPC variant

*10 way JST, GH crimp connector. 1.25 mm pitch. Suitable for cable size 26 to 30 AWG.

Cable input variant coming soon. For more details contact your local Renishaw representative.

Lowest recommended counter input frequency

(MHz)

Maximum speed (m/s)

0020 (2 µm)

16

16

–

16

–

8

–

0040 (1 µm)

16

16

–

8

–

4

–

0080 (0.5 µm)

16

8

–

4

–

2

–

40

20

12

10

6

5

4

0100 (0.4 µm)

12

6

–

3

–

1.6

–

0200 (0.2 µm)

6

3

–

1.6

–

0.8

–

0400 (0.1 µm)

–

–

0.7

–

0.36

–

0.24

1000 (40 nm)

–

–

0.26

–

0.12

–

0.08

2000 (20 nm)

–

–

0.12

–

0.06

–

0.04

40 µm system

Provisional speed 20 µm system


(MHz)

Maximum speed (m/s)

0020 (1 µm)

8

8

–

8

–

4

–

0040 (0.5 µm)

8

8

–

4

–

2

–

0080 (0.25 µm)

8

4

–

2

–

1

–

40

20

12

10

6

5

4

0100 (0.2 µm)

6

3

–

1.5

–

0.8

–

0200 (0.1 µm)

3

1.5

–

0.8

–

0.4

–

0400 (50 nm)

–

–

0.35

–

0.18

–

0.12

1000 (20 nm)

–

–

0.13

–

0.06

–

0.04

2000 (10 nm)

–

–

0.06

–

0.03

–

0.02

Greyed out options coming soon

14.5

25

4.5 x 45° 2

6

1025

9.5

4 4.6

5.6

5.6

15.7517

2 mounting holes M3 through

2 CAL pads2 mounting columns

JST output connector*

6.25

FPC input connector

Angular speedAngular speed depends on disc optical diameter – use the following equation to convert to rev/min.

Angular speed (rev/min) = V x 1000 x 60

p DWhere V = maximum linear speed (m/s) and D = Optical diameter (mm)

Pin 1

Pin 1

9


151

8

6 min 16

4033.3

R>20 Dynamic bend radius R>10 Static bend radius

8

4-40 UNC x 2

52

CAL/AGC push button switch access hole Ø3.15

Dimensions and tolerances in mmRi interface Dimension drawing

Speed

Clocked outputsThe medium resolution Ri0100, Ri0200 and Ri0400 interfaces have clocked outputs.

Customers must ensure they comply with the lowest recommended counter input frequency.


(MHz)

Maximum speed (m/s)

0100 (0.2 µm)

–

–

0.8

0.5

0200 (0.1 µm)

0.8

0.5

0.4

0.25

0400 (50 nm)

0.4

0.25

0.2

0.12

12

10

6

4

20 µm system 40 µm system

0100 (0.4 µm)

–

–

1.6

1.0

0200 (0.2 µm)

1.6

1.0

0.8

0.5

0400 (0.1 µm)

0.8

0.5

0.4

0.24

Non-clocked outputsThe low resolution Ri0004, Ri0020 and Ri0040 interfaces have non-clocked outputs.




Analogue outputs40 µm system – 20 m/s (-3dB)

20 µm system – 10 m/s (-3dB)


(MHz)

20 µm system 40 µm system

Encoder velocity (m/s)

Resolution (µm)

x 4 safety factor

Interface type

0004 (5 µm)

0008 (2.5 µm)

0020 (1 µm)

0040 (0.5 µm)

Maximum speed (m/s)

10

10

10

10

Interface type

0004 (10 µm)

0008 (5 µm)

0020 (2 µm)

0040 (1 µm)

Maximum speed (m/s)

20

20

20

20


10

Ti interface Dimension drawing

151

89

16

4-40 UNC x 2

8

40

6 min

62

67

CAL/AGC push switch access hole Ø2.4

R>20 Dynamic bend radius R>10 Static bend radius

Cover plate

Requires 2 mm hex key

Diagnostic LED (Ti0004–Ti20KD)

33.3




Speed20 µm system

Lowest recommended counter input

frequency (MHz)

50

40

25

20

12

10

8

6

4

1

Maximum speed (m/s)

Ti0004 5 µm

10

10

10

10

10

10

10

10

10

4.2

Ti0020 1 µm

10

10

10

10

9

8.1

6.48

4.5

3.37

0.84

Ti0040 0.5 µm

10

10

8.1

6.75

4.5

4

3.24

2.25

1.68

0.42

Ti0100 0.2 µm

6.48

5.4

3.24

2.7

1.8

1.62

1.29

0.9

0.67

0.16

Ti0200 0.1 µm

3.24

2.7

1.62

1.35

0.9

0.81

0.648

0.45

0.338

0.084

Ti0400 50 nm

1.625

1.35

0.81

0.67

0.45

0.4

0.324

0.225

0.169

0.042

Ti1000 20 nm

0.648

0.54

0.324

0.27

0.18

0.162

0.13

0.09

0.068

0.017

Ti2000 10 nm

0.324

0.27

0.162

0.135

0.09

0.081

0.065

0.045

0.034

0.008

Ti10KD 2 nm

0.065

0.054

0.032

0.027

0.018

0.016

0.013

0.009

0.0068

0.0017

Ti4000 5 nm

0.162

0.135

0.081

0.068

0.045

0.041

0.032

0.023

0.017

0.004

Ti20KD 1 nm

0.032

0.027

0.016

0.013

0.009

0.0081

0.0065

0.0045

0.0034

0.0008

Analogue output 10 (-3dB)

Dimensions and tolerances in mm

50

40

25

20

12

10

8

6

4

1

Maximum speed (m/s)

Ti0004 10 µm

20

20

20

20

20

20

20

20

20

8.4

Ti0020 2 µm

20

20

20

20

18

16.2

12.96

9

6.74

1.68

Ti0040 1 µm

20

20

16.2

13.5

9

8

6.48

4.5

3.36

0.84

Ti0100 0.4 µm

12.96

10.8

6.48

5.4

3.6

3.24

2.58

1.8

1.34

0.32

Ti0200 0.2 µm

6.48

5.40

3.24

2.7

1.8

1.62

1.296

0.9

0.676

0.168

Ti0400 0.1 µm

3.25

2.7

1.62

1.34

0.9

0.8

0.648

0.45

0.338

0.084

Ti1000 40 nm

1.296

1.08

0.648

0.54

0.36

0.324

0.26

0.18

0.136

0.034

Ti2000 20 nm

0.648

0.54

0.324

0.27

0.18

0.162

0.13

0.09

0.068

0.016

Ti10KD 4 nm

0.13

0.108

0.064

0.054

0.036

0.032

0.026

0.018

0.0136

0.0034

Ti4000 10 nm

0.324

0.27

0.162

0.136

0.09

0.082

0.064

0.046

0.034

0.008

Ti20KD 2 nm

0.064

0.054

0.032

0.026

0.018

0.0162

0.013

0.009

0.0068

0.0016

Analogue output 20 (-3dB)

40 µm systemLowest

recommended counter input

frequency (MHz)


11

Interface output signals

Digital (Ti and Ri interfaces)

1518

Ri connector

Ti connector

1518

*All power connections can be used either to minimise voltage drop down the cable or incorporate voltage sensing. �The alarm signal can be output as a line driver signal or 3-state. Please select the preferred option at time of ordering.

*All power connections can be used either to minimise voltage drop down the cable or incorporate voltage sensing.

Digital (ACi interface)

Signal PinFunction

7, 8

2, 9

14

6

13

5

12

4

11

3

1

Case

10, 15

5 V

0 V

A

B

Z

E

+

-

+

-

+

-

+

-

X

–

–

*All power connections can be used either to minimise voltage drop down the cable or incorporate voltage sensing.

Power*

Incremental

Reference mark

Set-up

Remote CAL

Shield

Do not connect

Function Signal

Cosine

Sine

5 V

0 V

VX

CAL

–

–

V1

V2

V0

+

-

+

-

+

-

Pin

4, 5

12, 13

9

1

10

2

3

11

6

14

Case

7, 8, 15

Analogue (Ti and Ri interfaces)

Pin 1 Pin 10

ACi JST output connector

Pin 1 Pin 16

ACi FPC input connectorPower*

Incremental

Reference mark

Set-up

Remote CAL

Shield

Do not connect

FunctionSignal

FPC input

5 V

0 V

VX

CAL

–

–

V1

V2

V0

+

-

+

-

+

-

Pin

7, 8

3, 6, 11, 14

12

13

15

16

4

5

1

2

–

9, 10

9

10

1

2

3

4

5

6

7

8

–

–

Signal

JST output

5 V

0 V

X

CAL

–

–

A

B

Z

+

-

+

-

+

-

Pin

Power*

Incremental signals

Reference mark

Alarm�

Set-up

Shield

Do not connect


12

General specificationsPower supply 5 V ±10% ATOM readhead typically <50 mA ATOM with ACi typically <100 mA ATOM with Ri typically <100 mA ATOM with Ti typically <200 mA NOTE: Current consumption figures refer to unterminated systems. For analogue outputs a further 10 mA in total will be drawn when terminated with 120R. For digital outputs a further 25 mA per channel pair (eg A+, A-) will be drawn when terminated with 120R. Power from a 5 V dc supply complying with the requirements for SELV or standard IEC/BS/EN 60950-1. Ripple 200 mVpp maximum@frequency up to 500 kHz

Temperature Storage -20 °C to +70 °C Operating 0 °C to +60 °C

Humidity Rated up to 40 °C, 95% relative humidity (non-condensing)

Sealing Cable variant IP40 Ri IP20 FPC variant IP20 (with lid fitted) Ti IP20

Acceleration (scale and readhead) Operating 400 m/s² BS EN 60068-2-27: 2009

Shock (scale and readhead) Operating 1000 m/s², 6 ms, ½ sine BS EN 60068-2-27: 2009

Vibration Operating 100 m/s² max @ 55 Hz to 2000 Hz, 3 axes BS EN 60068-2-6: 2008

Mass FPC readhead <2.3 g Cable readhead 4 g Cable <18 g/m ACi <30 g Ri 70 g Ti 100 g

EMC compliance Cable variant BS EN 61326-1: 2013 FPC variant and ACi Designed as system components and to be compliant with EMC regulations for products of their type. Care must be taken with shielding and grounding arrangements to ensure EMC performance once installed. It is the system integrator’s responsibility to implement, test and prove EMC compliance for the whole machine.

Environmental Compliant with EU Directive 2011/65/EU (RoHS)

Readhead cable 10 core, high flex, EMI screened cable, outside diameter 3.5 mm maximum Flex life >20 x 106 cycles at 20 mm bend radius, maximum length 1.5 m. (Extension cable up to 25 m when using Renishaw approved extension cable)

UL recognised

FPC cable 16 core, 0.5 mm pitch, maximum exposed conductor length 2.5 mm, maximum length 1 m

Connector options Cable variants Interboard connector compatible with the Ri/Ti series interfaces 15 way, D-type connector FPC 16 core, 0.5 mm pitch

Typical SDE (analogue) 40 µm version <±120 nm 20 µm version <±75 nm

Analogue outputs

V0 V1 V2-

V0 V1 V2+

120R

Remote CAL operation

CAL

0 V

Remote operation of the CAL is possible via the CAL pin.

For applications where no interface is used, remote operation of CAL is essential.

Electrical connectionsGrounding and shielding Recommended signal termination

Digital outputs

Standard RS422A line receiver circuitry

InterfaceA B Z+

Cable Z0 = 120R

Customer electronics

A B Z-

120R

Cable readhead

Shield

Output signals

5 V

Connector/ interface

0 V

Customer electronics

IMPORTANT: The shield should be connected to the machine earth (Field Ground).

NOTE: Maximum cable length between interface and customer electronics is

25 m for Ri and 50 m for Ti depending on clocked output.

FPC readhead

FPC cable

Shield (optional)

Output signals

5 V

0 V

ACi/customer electronics

For more information on FPC refer to installation guide.


13

*Set-up signals as shown are not present during calibration routine =Inverse signals not shown for clarity

Voltage at X and VX

3.3 V (nom)

50% 70% 100%00

Signal level

Between 50% and 70% signal level, X and VX is a duty cycle, 20 µm duration.

Time spent at 3.3 V increases with incremental signal level.

At >70% signal level VX is nominal 3.3 V.

Set-up (ACi, Ri and Ti analogue)

Digital output signals Form – Square wave differential line driver to EIA RS422A

Incremental� 2 channels A and B in quadrature (90° phase shifted)

Reference�

Signal period

Resolution

A

B

Z Synchronised pulse Z, duration as resolution

Incremental 2 channels V1 and V2 differential sinusoids in quadrature, centred ~ 1.65 V (90° phase shifted)

Interface output specifications

Analogue output signalsAll ATOM readheads and Ri and Ti analogue interfaces

Bi-directionally repeatable Differential pulse V0

centred on 45°

Reference

(V0 +)-(V0-)

1 Vpp

360° (nom)

0.7 to 1.35 Vpp with green LED indication (readhead)and 120R termination.

40/20 µm

(V1 +)-(V1 -)

(V2 +)-(V2 -)

0°

Set-up* (Ti digital)

Voltage at X

1

100%00

Signal levelSetup signal voltage proportional to incremental signal amplitude

>15 ms

E

3-state alarm (option) Differentially transmitted signals forced open circuit for >15 ms when alarm conditions valid.

Alarm= Differential line driven output

Interface model

Ri0004 Ri0020 Ri0040

Ri0100 Ri0200 Ri0400

<20% signal or

>130% signal

<40% signal or

overspeed

Alarm asserted when

Interface model

Ti <20% signal or

>135% signal or overspeed

Alarm asserted when

During normal operation

During CAL routine

Voltage at X and VX

Normal operation Normal operationReference mark

calibration

3.3 V

1.65 V

0 V

Start of calibration

routine End of incremental calibration

routine

End of calibration

routine

Incremental calibration

>70% signal >70% signal

(after CAL)

45°


14

ATOM readhead ATOM 4 F 0 - 000

Scale period 2 = 20 µm 4 = 40 µm

Head type F = FPC T = Cabled: interboard connector (for use with Ri and Ti interfaces) D = Cabled: D-type connector

Head gain setting

Cable length 000 = FPC 020 = 200 mm 050 = 500 mm 080 = 800 mm 100 = 1000 mm 150 = 1500 mm

Scale type

40 µm (high accuracy)

40 µm

20 µm

Length

10 mm to 90 mm

100 mm to 20 m

10 mm to 90 mm

100 mm to 20 m

10 mm to 90 mm

100 mm to 20 m

Increments

10 mm

50 mm

10 mm

50 mm

10 mm

50 mm

Part number (where xxxx is the length in cm)

A-9408-xxxx

A-9407-xxxx

A-9406-xxxx

RTLF tape scale

Head gain setting

0

0

0

Head gain setting

0

1

2

3

4

RTLF (tape scale)

3

–

–

–

–

RCLC (glass scale)

–

3

–

–

–

40 µm rotary discs (mm)

<20

–

–

–

–

3

20

–

–

–

3

–

25, 27, 30

–

–

3

–

–

>30

–

3

–

–

–

20 µm rotary discs (mm)

30

–

–

–

–

3

36

–

–

–

3

–

50, 56, 68

–

–

3

–

–

108

–

3

–

–

–

Part number

A-9405-4017

A-9405-4020

A-9405-4025

A-9405-4027

A-9405-4030

A-9405-4036

A-9405-4050

A-9405-4056

A-9405-4068

A-9405-4108

RCDM rotary discs (40 µm version)

Diameter (mm)

17

20

25

27

30

36

50

56

68

108

Head gain setting

4

3

2

2

2

1

1

1

1

1

Length (mm)

18

30

55

80

100

105

130

20 µm

A-9404-2018

A-9404-2030

A-9404-2055

A-9404-2080

A-9404-2100

A-9404-2105

A-9404-2130

40 µm

A-9404-4018

A-9404-4030

A-9404-4055

A-9404-4080

A-9404-4100

A-9404-4105

A-9404-4130

RCLC glass scale

Head gain setting

1

1

1

1

1

1

1

Part number

A-9405-2030

A-9405-2036

A-9405-2050

A-9405-2056

A-9405-2068

A-9405-2108

RCDM rotary discs (20 µm version)

Diameter (mm)

30

36

50

56

68

108

Head gain setting

4

3

2

2

2

1

15


ACi interface ACi 0020 A 04 A

Series

Interpolation factor

Options A = Standard

Clocked output option 40 = 40 MHz (0020, 0040, 0080, 0100 and 0200 interpolation factors only) 20 = 20 MHz (0020, 0040, 0080, 0100 and 0200 interpolation factors only) 12 = 12 MHz (0400, 1000 and 2000 interpolation factors only) 10 = 10 MHz (0020, 0040, 0080, 0100 and 0200 interpolation factors only) 06 = 6 MHz (0400, 1000 and 2000 interpolation factors only) 05 = 5 MHz (0020, 0040, 0080, 0100 and 0200 interpolation factors only) 04 = 4 MHz (0400, 1000 and 2000 interpolation factors only)

PCB type A = FPC input connector B = Cable input connector

Resolution

0020 0040 0080 0100 0200 0400 1000 2000

20 µm system

1 µm 0.5 µm 0.25 µm 0.2 µm 0.1 µm 50 nm 20 nm 10 nm

2 µm 1 µm 0.5 µm 0.4 µm 0.2 µm 0.1 µm 40 nm 20 nm

40 µm system


Digital: Ti 0200 A 20 E

Series Ti


Options E = Standard

Clocked output option 50, 40, 25, 20, 12, 10, 08, 06, 04, 01 (MHz)

Alarm format and conditions A = Line driven; All alarms B = Line driven; low signal, high signal E = 3 state; All alarms F = 3 state; low signal, high signal

Resolution

0004 0020 0040 0100 0200 0400 1000 2000 4000 10KD 20KD

20 µm system

5 µm 1 µm 0.5 µm 0.2 µm 0.1 µm 50 nm 20 nm 10 nm 5 nm 2 nm 1 nm

10 µm 2 µm 1 µm 0.4 µm 0.2 µm 0.1 µm 40 nm 20 nm 10 nm 4 nm 2 nm

40 µm system


Ti interface Analogue: Ti 0000 A 00 A

Options A = Vmid = 1.65 V V = Vmid = 2.5 V

Ri interface Analogue: Ri 0000 A 00 A

Digital: Ri 0400 A 12 B

Series Ri


Options B = Standard

Clocked output option 12 = 12 MHz (0200 and 0400 interpolation factors only) 10 = 10 MHz (0200 and 0400 interpolation factors only) 06 = 6 MHz (0100, 0200 and 0400 interpolation factors only) 04 = 4 MHz (0100, 0200 and 0400 interpolation factors only) 00 = Non-clocked (0004, 0008, 0020 and 0040 interpolation factors only)

Alarm format A = Line driven E = 3-state

Resolution

0004 0008 0020 0040 0100 0200 0400

20 µm system

5 µm 2.5 µm 1 µm 0.5 µm 0.2 µm 0.1 µm 50 nm

10 µm 5 µm 2 µm 1 µm 0.4 µm 0.2 µm 0.1 µm

40 µm system


Greyed-out options not available with this variant

Renishaw plc

New Mills, Wotton-under-Edge, Gloucestershire GL12 8JR United Kingdom

T +44 (0)1453 524524F +44 (0)1453 524901E [email protected]

www.renishaw.com

*L-9517-9563-01*

For worldwide contact details, please visit our main website at www.renishaw.com/contactRENISHAW HAS MADE CONSIDERABLE EFFORTS TO ENSURE THE CONTENT OF THIS DOCUMENT IS CORRECT AT THE DATE OF PUBLICATION BUT MAKES NO WARRANTIES OR REPRESENTATIONS REGARDING THE CONTENT. RENISHAW EXCLUDES LIABILITY, HOWSOEVER ARISING, FOR ANY INACCURACIES IN THIS DOCUMENT.RENISHAW® and the probe symbol used in the RENISHAW logo are registered trade marks of Renishaw plc in the United Kingdom and other countries. apply innovation and names and designations of other Renishaw products and technologies are trade marks of Renishaw plc or its subsidiaries.

Loctite® is a registered trademark of the Henkel Corporation.

© 2013-2014 Renishaw plc All rights reserved Issued 0514

ATOM compatible scales:RTLF tape scale

RCLC glass scale

RCDM glass disc

Contact your local Renishaw representative for more information

ATOM compatible interfaces:

Ri interface

Ti interface

ACi interface

ACi interface (coming soon)

Documents

ATOM miniature encoder system - PEI-FRANCE.com · 2014-06-02 · (Pitch tol. ±1°) End reference mark head orientation Mid reference mark head orientation Technical specifications