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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
Data sheetATOM encoder system
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
Data sheetATOM encoder system
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.
Data sheetATOM encoder system
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
Data sheetATOM encoder system
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
Technical specifications
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
Forward direction of readhead relative to scale
Forward direction of readhead relative to scale
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
Data sheetATOM encoder system
Technical specifications
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
Data sheetATOM encoder system
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
Lowest recommended counter input frequency
(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
Data sheetATOM encoder system
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.
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.
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)
Analogue outputs40 µm system – 20 m/s (-3dB)
20 µm system – 10 m/s (-3dB)
Lowest recommended counter input frequency
(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
Data sheetATOM encoder system
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
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)
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)
Data sheetATOM encoder system
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
Data sheetATOM encoder system
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.
Data sheetATOM encoder system
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°
Data sheetATOM encoder system
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
Data sheetATOM encoder system
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
Interpolation factor
Digital: Ti 0200 A 20 E
Series Ti
Interpolation factor
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
Interpolation factor
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
Interpolation factor
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
Interpolation factor
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 uk@renishaw.com
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)
Recommended