MICROESYS M2000-M05-256-2-L18-C2 Mercury tm2000 smart encoder systems programmable interpolation in integer steps to 0.078î¼m Datasheet

Mercury TM 2000 Smart Encoder Systems
Next Generation Ruggedized
Design Replaces Mercury 2100
Programmable Interpolation in Integer Steps to 0.078μm
Reflective Linear and Rotary Encoder Systems
New design for more
robust performance
Resolution
Linear: 5μm to 0.078μm
Rotary: 6,600 to 4.2M CPR
Accuracy
Linear: ± 1μm available
± 3μm to ± 5μm standard
Rotary: Up to ± 2.1 arc-sec
Output
A-quad-B and Index Pulse
Sensor the
size of a dime
The New Mercury 2000 encoder represents the next level of encoder performance. With programmable interpolation, smallest sensor size,
easiest alignment, and superior noise immunity, the M2000 delivers Best-in-Class performance.
Imagine what you can do with this!
The new Mercury 2000 can reduce the cost and size of your system, and improve
its performance all at once! MicroE Systems’ Mercury 2000 kit encoders are
smaller, higher performance, faster to install, and easier to set up and align than
any other encoder. The tiny sensor fits into very tight spaces and works in both
linear and rotary applications.
New features
• New metal enclosure for SmartPrecision™ electronics
Best-in-Class noise immunity for harsh environments
Shorter length for smaller, tighter cabinets
Frame mounting compatible for easy installation
Robust metal housing with easy access locking screws
• Double shielded long life cable
• CE compliant
Standard features
• Smallest sensor- 1/3 the size of other encoders
• Revolutionary bolt-in alignment for many applications
• Advanced SmartPrecision electronics built into shielded D-sub connector
• A-quad-B output with programmable interpolation in integer steps
for resolutions to 0.078µm (linear); 4.2M CPR (rotary)
• LED set up indicators for sensor alignment and index location
• Bi-directional index signal is repeatable to encoder resolution
Table of Contents
System & Sensor
pg 1-5
SmartPrecision Electronics
pg 6-7
SmartPrecision Software
pg 8
Scales
pg 9
Ordering Information
pg 10
Optional features
• Glass scale length or diameter
Linear lengths from 5mm to 2m
Rotary diameters from 12mm to 108mm
• Cable length of 0.5m, 1m, 2m, or custom
• SmartPrecision Software
System Configurations
Standard and Optional Equipment
M2000 Smart Encoder Systems
Standard Equipment
Encoder Sensor
Same for linear and
rotary scales.
M10
Sensor Cable
The standard cable is
double shielded and
available in lengths of
0.5m, 1m or 2m.
SmartPrecision™ Electronics
Module
New Metal Enclosure Provides
Best-in-Class Noise Immunity
A 15 pin high density
D-sub connector mates
to the customer controller.
RS 232 Interface
Adapter
M2000
Optional Equipment
The adapter provides
connections to a PC,
the encoder system
and the controller.
SmartPrecision™ Software
The software module enables
all programmable and diagnostic
features plus displays encoder
output and signal strength.
See page 8 for details.
Page 2 of 10
Broader Alignment Tolerances,
Increased Standoff Clearance, Smallest Sensor and More
Why Mercury Encoders Make It Easier To Design High Performance Into Your Equipment
Theta Z Alignment Tolerance
± 0.5°
± 2°
Mercury
Brand Y
± 0.006°
Brand X
Eliminate the Frustration of Touchy
Encoder Alignment
Mercury Solves this Problem for Good
Fussy alignment is no longer a concern. With Mercury’s
patented PurePrecision™ optics, advanced SmartPrecision™
electronics and LED alignment indicators, you can push the
sensor against your reference surface, tighten the screws and
you’re finished. Try that with brand X or Y.
This performance is possible thanks to relaxed alignment
tolerances, particularly in the theta Z axis. Mercury offers a
± 2° sweet spot– that’s a 300% improvement over the best
competitive encoder. And that will result in dramatic savings
in manufacturing costs.
No other commercially available encoder is easier to align,
easier to use, or easier to integrate into your designs.
Alignment Tolerance Comparison**
Mercury*
± 0.15mm
± 0.20mm for linear
± 0.10mm for rotary >_ 19mm dia.
± 1.0°
± 2.0°
± 2.0°
Z Standoff
Y
theta X
theta Y
theta Z
Brand X
± 0.1mm
± 0.1mm
Brand Y
± 0.1mm
unspecified
Mercury vs. Best Competitor
Mercury is 50% better
Mercury is 100% better
unspecified
± 0.1°
± 0.006°
± 1.0°
± 1.0°
± 0.5°
Mercury is 100% better
Mercury is 300% better
*Measured at a constant temperature for one axis at a time with all other axes at their ideal positions.
**Based on published specifications
Standoff Clearance
Mercury Can Reduce System Size and Cost
Mercury’s sensor height is 44% shorter than competitive encoders,
making it easy to fit into your design. This reduction can also cut total
system weight and cost by allowing the use of smaller motors and
stages. Safe system operation is also enhanced thanks to Mercury’s
generous standoff clearance– 200% greater than other encoders.
And its standoff tolerance is 50% greater than the best alternative.
This significantly relaxes mechanical system tolerances,
while reducing system costs.
Mercury
2.4mm*
± 0.15mm
Brand Y
0.8mm
± 0.1mm
Mechanical Dimension Comparison**
Sensor Z height
Standoff clearance
Standoff tolerance
System height
Mercury Brand X Brand Y Mercury vs.
Best Competitor
8.4mm 23mm 15mm
44% better
2.4mm 0.5mm 0.8mm 200% better
± 0.15mm ± 0.1mm ± 0.1mm 50% better
11.7mm 28.5mm 15.8mm 26% better
Brand X
0.5mm
± 0.1mm
**Based on published specifications
* Dimensions shown illustrate encoder system standoff clearance; see Mercury
Encoder Interface Drawings for correct design reference surfaces.
Page 3 of 10
System Specifications
Resolution and Maximum Speed
Mercury 2000 systems have programmable interpolation from x4 to x256 in integer steps.
Below is a table of sample values.
Linear - 20μm grating pitch
Interpolation
Resolution
Maximum Speed*
x4
x10
x20
x50
x80
x100
x200
x250
5.000µm/count
2.000µm/count
1.000µm/count
0.400µm/count
0.250µm/count
0.200µm/count
0.100µm/count
0.080µm/count
7200mm/s
7200mm/s
7200mm/s
7200mm/s
7200mm/s
5760mm/s
2880mm/s
2300mm/s
To calculate desired linear interpolation multiplier, use the following equation
Interpolation Multiplier = Grating Pitch (20µm) / Desired Resolution (µm/count)
Rotary - 20μm grating pitch
Rotary
Glass Scale
Diameter
Fundamental
Resolution
0.472” [12.00mm]
1650 CPR
0.750” [19.05mm]
Interpolation
Note: The range of available values is x4 to x256
in integer steps; example values below.
interpolated resolution (CPR)
interpolated resolution (arc-sec/count)**
interpolated resolution (µrad/count)**
maximum speed* (RPM)
x4
6,600
196.4
952
13090
x100
165,000
7.85
38.0
10470
x256
422,400
3.08
14.85
4090
interpolated resolution (CPR)
interpolated resolution (arc-sec/count)**
interpolated resolution (µrad/count)**
maximum speed* (RPM)
x4
10,000
129.6
628.3
8640
x100
250,000
5.18
25.1
6912
x256
640,000
2.03
9.8
2700
x4
interpolated resolution (CPR)
16,384
interpolated resolution (arc-sec/count) ** 79.1
interpolated resolution (µrad/count)** 383.5
maximum speed* (RPM)
5273
x100
409,600
3.16
15.3
4219
x256
1,048,576
1.24
6.0
1648
interpolated resolution (CPR)
interpolated resolution (arc-sec/count)**
interpolated resolution (µrad/count)**
maximum speed* (RPM)
x4
32,768
39.6
191.7
2637
x100
819,200
1.58
7.7
2109
x256
2,097,152
0.618
3.0
824
interpolated resolution (CPR)
interpolated resolution (arc-sec/count)**
interpolated resolution (µrad/count)**
maximum speed* (RPM)
x4
65,536
19.7
95.9
1318
x100
1,638,400
0.791
3.83
1054
x256
4,194,304
0.309
1.5
412
2500 CPR
1.250” [31.75mm]
4096 CPR
2.250” [57.15mm]
8192 CPR
4.250” [107.95mm] 16384 CPR
*Maximum speed produces an encoder quadrature output of up to 28.8 million states per second.
** Resolution values shown are approximate. To calculate exact resolution values, convert from CPR (Counts Per Revolution) to the desired units.
Note: Specifications assume XOR function which is available in all standard controllers.
To calculate desired rotary interpolation multiplier, use the following equation
Interpolation Multiplier = Desired Resolution (CPR) / Fundamental Scale Resolution (CPR)
All Specifications are subject to change. All data is accurate to the best of our knowledge. MicroE Systems is not responsible for errors.
Page 4 of 10
System Specifications
System
Grating Period
20µm
Signal Period
20µm
System Resolution 5µm - 0.078µm in integer interpolation steps (factory set or user
programmed using MicroE SmartPrecision Software)
Linear accuracy*
Interpolation
accuracy:
Better than ± 0.12µm over any 20µm movement
Long-travel
accuracy:
±1µm accuracy available - consult MicroE
Better than ± 3µm for scales up to 130mm
Better than ±5µm for scales 155mm to 1m
Better than ±5µm per meter for scales 1m or more
*Maximum peak to peak error over the specified movement when compared to a NIST-traceable laser interferometer standard,
used at room temperature and with MicroE interpolation electronics.
Rotary Accuracy* Scale O.D.
12.00mm
19.05mm
31.75mm
57.15mm
107.95mm
Microradians
±100
±63
±38
±19
±10
Arc-Seconds
±21
±13
±7.8
±3.9
±2.1
*Based on ideal scale mounting concentricity
Sensor Size
W:
L:
H:
12.70mm
20.57mm
8.38mm
0.500"
0.810"
0.330"
Operating and Electrical Specifications
Power Supply
Temperature
Operating:
Storage:
Humidity:
EMI:
Shock:
Sensor Weight:
Cable:
5VDC ±5% @ 330mA (30mA for sensor)
0 to 70°C
-20 to 70°C
10 - 90% RH non-condensing
CE Compliant
1500G 0.5 ms half sine (Sensor)
5.0g (Sensor without cable)
Double shield. Maximum length 2m. Diameter: 3.6mm (0.142”)
Flex Life: 20 x 106 cycles @ 20mm bending radius
Mechanical Information - Sensor
.272 6.91
.166 4.22
A
A
SENSOR
SURFACE
SENSOR
MTGMTG.
SURFACE
19.7 [500] or 39.4 [1000]
or 78.7 [2000] ±.50 [12.7]
.13 3.4
.058 1.47
.037 0.94
B
.142 [3.61]
CABLE DIAMETER
.083 2.11
.810 20.57
.405 10.29
.155 3.94
.24 6.2
.334 8.5
.500 12.70
All Specifications are subject to change. All data is
accurate to the best of our knowledge. MicroE
Systems is not responsible for errors.
2X
.106 2.69
THRU.
.345 8.75
.080 2.03
.650 16.5
C
Page 5 of 10
TM
SmartPrecision
Electronics Module
The Mercury 2000 encoder system includes a SmartPrecision
electronics module. This compact, fully-featured signal processing
system performs the following functions:
• Interpolation - up to 256X with 28.8 million quadrature states / sec.
• Programmable interpolation level and output bandwidth
• Accuracy optimization - sensor signals are automatically optimized
to improve system accuracy and maximize repeatability
• Signal strength indication - red / yellow / green LEDs assist during
setup and provide diagnostics at a glance
• Index centering - centers the bi-directional index output pulse for
repeatability to +/-1LSB
• Power-indicating LED
• Computer interface - for programming and data acquisition using
SmartPrecision software
• Superior EMI / RFI immunity - CE compliant
• Mounting options - all electronics are within the EMI-shielded
connector housing and can be screwed directly into a mating
connector that is bulkhead mounted, or the module may be mounted
to the frame of your motion system and connected using an
extension cable
SmartPrecision module enclosure provides “Best-in-Class”
noise immunity for high noise environments.
Programmable Interpolation
The electronics module has programmable interpolation that is
selectable over the range x4 to x256 in integer steps, providing output
resolutions that can be matched to your application requirements. This
feature provides linear resolutions from 5µm to 0.078µm in convenient
increments (e.g. x200 interpolation = 0.1µm) and rotary resolutions
from 6,600 CPR to 4.2M CPR. Specify the interpolation value at the
time of ordering or select the interpolation at your site using
SmartPrecision Software.
Programmable Maximum Output Frequency
For encoder applications combining high resolution and high speed,
the SmartPrecision electronics module supports up to 28.8 million
quadrature state changes per second**. By specifying the maximum
output frequency to match your controller's capability - ranging from
900,000 up to 28.8 million quadrature state changes per second - the
Mercury encoder system will never produce encoder counts faster than
your controller can read them. Specify the encoder’s maximum output
frequency at the time of ordering or select the setting at your site
using MicroE's SmartPrecision Software.
* The electronics module’s serial computer programming interface can be translated to be RS-232
compatible using the MicroE SmartPrecision Computer Interface Adapter or a voltage translation
circuit of your own design.
Mercury 2000 Outputs:
15-pin high density Male D-sub connector
PIN
FUNCTION
1
Reserved - do not connect
2
Serial programming interface -transmit*
3
Serial programming interface -receive*
4
A - quadrature
5
A + quadrature
6
7
8
9
10
11
12
13
14
15
Reserved - do not connect
Reserved - do not connect
Reserved - do not connect
B- quadrature
B+ quadrature
Reserved - do not connect
+5V
Ground
I+ index
I- index
** “Quadrature state changes per second" is the reciprocal of "dwell time" or "edge separation". For
example, 28.8 million states per second = 0.035µsec dwell time.
*** Future availability, contact MicroE.
All Specifications are subject to change. All data is accurate to the best of our knowledge.
MicroE Systems is not responsible for errors.
Page 6 of 10
Mechanical Information - electronics module
2.11 [53.5]
2.03 [51.5]
1.89 [48.0]
.75 [19.1]
2
2
2.18 [55.4]
1.50 [38.1]
Ø.13 [Ø3.3]
PIN 5
PIN 1
.85 [21.5]
.46 [11.6]
.10 [2.4]
PIN 15
PIN
PIN 10
11
Male D connector
Maximum Quadrature Output Frequency
Output Frequency
7.2MHz
3.6MHz
1.8MHz
900kHz
450kHz
225kHz
A-quad-B Output Rate
28.8M quadrature states / sec
14.4M quadrature states / sec
7.2M quadrature states / sec
3.6M quadrature states / sec
1.8M quadrature states / sec
900k quadrature states / sec
Dwell Time (or edge separation)
0.035µsec
0.069µsec
0.139µsec
0.278µsec
0.555µsec
1.111µsec
Output Signals
Signal Termination for
A-Quad-B and Index
Quadrature TTL
Pins 4 & 5
A
Pins 9 & 10
B
120
Ω
Cable Zo=120Ω
Pins 14 & 15*
I
Mercury 2000
encoder
Customer
Electronics
*Note: The index pulse may be aligned with A- or B- at some interpolation values.
All Specifications are subject to change. All data is accurate to the best of our knowledge.
MicroE Systems is not responsible for errors.
Page 7 of 10
SmartPrecision Software for
Mercury 2000 and 3000 Encoder Systems
SmartPrecision Software
makes Mercury the
industry’s easiest to use
encoder. It helps you
program, set up, use, and
diagnose Mercury 2000
and 3000 encoders with
the click of a mouse.
Compatible with
Windows 95, 98, ME, NT,
2000, and XP.
Program Mercury Encoder Electronics
• Set interpolation in integer steps from x4 to x256 (Mercury 2000)
or x4 to x1024 (Mercury 3000)
• Set maximum output frequency to match your controller
Install Mercury Encoder System
• Align sensor using Signal Level display and Encoder Signal data plot
• Locate index and see when sensor is over the scale’s index mark
• Verify sensor output over length of scale using the Signal Strength plot
Monitor Mercury Encoder Operation
• Read encoder position in engineering units of your choice
• Read the encoder's hour meter to monitor system usage
• Capture alarms while system operates unattended
Diagnose Mercury Encoder Performance
• Capture signal data and email it to MicroE for rapid diagnostic support
• Monitor alarms, view the alarm history log
System Description
The encoder signal plot, or Lissajous plot, reveals the underlying strength
and uniformity of the sensor’s output.
How to Order SmartPrecision Software
To Purchase the SmartPrecision Software system, use this Model
Number: SSWA120 for 120 VAC, 60Hz US Standard 2-prong plug
or SSWA220 for 220 VAC, 50 Hz European Std. 2-prong plug
The SmartPrecision Software system includes Software on CD, a
computer interface adapter, computer cable, and a power adapter.
All Specifications are subject to change. All data is accurate to the best of our knowledge.
MicroE Systems is not responsible for errors.
Page 8 of 10
Scale Specifications
Standard and Customized Scales
MicroE Systems offers a wide array of chrome on glass scales for the highest accuracy and best thermal stability. Easy to install, standard
linear and rotary scales meet most application requirements. Customized linear, rotary, and rotary segment scales are available where needed. All scales include an optical index. Mercury's glass scales save time by eliminating motion system calibrations or linearity corrections
required by other encoders, and provide better thermal stability than metal tape scales.
Options include:
• Standard linear: 18mm - 2m
• Standard rotary: 12mm - 107.95mm diameter, with or without hubs
• Custom linear*: special lengths, widths, thickness, index mark locations and special low CTE materials
• Custom rotary*: special ID's, OD's (up to 304.8mm), index mark outside the main track and special low CTE materials
• Mounting of hubs for rotary scales: MicroE Systems can mount and align standard, custom, or customer-supplied hubs
• Rotary segments*: any angle range; wide range of radius values
*Custom scales or rotary segments are available in OEM quantities. Contact your local MicroE Systems sales office.
Standard Short Linear Scales
130mm and Shorter
Key: inches[mm]
Scale Length
0.036 [0.9]
Measured Length
is always 5 mm less
then total length
0.250 [6.35]
Center Index
End Index
Model
Scale Length
Measured Length
L18
0.709 [18]
0.512 [13]
L30
1.181 [30]
0.984 [25]
L55
2.165 [55]
1.969 [50]
Specifications
Accuracy
±3µm standard
±1µm available
Material
Soda lime glass
Typical CTE
8ppm/°C
Index
Center or End
L80
L105
L130
3.150 [80]
4.134 [105]
5.118 [130]
2.953 [75]
3.937 [100]
4.921 [125]
Custom scales available
Standard Long Linear Scales
155mm and Longer
Key: inches[mm]
0.098 [2.5]
Scale Length
Measured Length
is always 5 mm less
then total length
0.787 [20.00]
Model
Scale length
Measured length
L155
6.102 [155]
5.906 [150]
Material
Typical CTE
Index
Center Index
End Index
L225
8.858 [225]
8.661 [220]
L325
12.795 [325]
12.598 [320]
Specifications
Accuracy
L425
16.732 [425]
16.535 [420]
L525
20.669 [525]
20.472 [520]
±5 µm <1m
±5 µm/m >1m
Soda lime glass
8ppm/°C
Center or End
L1025
L2025
40.354 [1025] 79.724 [2025]
40.157 [1020] 79.528 [2020]
Custom scales available
All Specifications are subject to change. All data is accurate to the best of our knowledge.
MicroE Systems is not responsible for errors.
Page 9 of 10
Standard Rotary Scales
HUB THICKNESS
SCALE
PATTERN
SCALE O.D.
Specifications
Material
Typical CTE
HUB I.D.
MOUNTING
HOLES
OPTICAL DIAMETER
Soda lime glass
8ppm/°C
Key: inches[mm]
Model No.
Scale Outer
Diameter
Scale Inner
Diameter
Optical
Diameter
Hub Inner
Diameter
+.0005/-0.0000
Hub
Thickness
Fundamental
CPR
R1206
R1910
R3213
0.472 [12.00]
0.750 [19.05]
1.250 [31.75]
0.250 [6.35]
0.375 [9.52]
0.500 [12.70]
0.413 [10.50]
0.627 [15.92]
1.027 [26.08]
0.1253 [3.18]
0.1253 [3.183]
0.2503 [6.358]
0.040 [1.02]
0.040 [1.02]
0.050 [1.27]
1650
2500
4096
R5725
R10851
2.250 [57.15]
4.250 [107.95]
1.000 [25.40]
2.000 [50.80]
2.053 [52.15]
4.106 [104.30]
0.5003 [12.708]
1.0003 [25.408]
0.060 [1.52]
0.080 [2.03]
8192
16384
Custom scales available
How to Order Mercury 2000 Encoder Systems
To specify your Mercury encoder with the desired scale, level of interpolation, maximum output frequency, cable length and software,
consult the chart below to create the correct part number for your order. Call MicroE Systems’ Rapid Customer Response team for
more information [508] 903-5000.
Example (Linear Encoder): M2000-M10-256-1-L55-C1
Example (Rotary Encoder): M2000-M10-256-1-R1910-HA
M2000 - Cable Length - Interpolation
M05 = 0.5 m
M10 = 1.0 m
M20 = 2.0 m
4 = 4x
5 = 5x
256 = 256x
How to Order SmartPrecision Software
SmartPrecision Software
SSWA120 for 120 VAC, 60Hz
US Standard 2-prong plug
-
Maximum Output
Frequency
1 = 7.2 MHz
2 = 3.6 MHz
3 = 1.8 MHz
4 = 900 kHz
5 = 450 kHz
6 = 225 kHz
Scale Model
Lxxx or Rxxxx
-
Scale Mounting
For linear scales:
T = Tape mounting
C1 = 3 scale clamps*
C2 = 10 scale clamps**
Hubs for Rotary Scales:
NH = Without Hub
HE = for R1206
HA = for R1910
HB = for R3213
HC = for R5725
HD = for R10851
or
SSWA220 for 220 VAC,
50 Hz European Std. 2-prong plug
* 3 clamps for linear scales up to 130mm
** 10 clamps for linear scales 155mm or longer
All Specifications are subject to change. All data is accurate to
the best of our knowledge. MicroE Systems is not responsible
for errors.
DS-M2000 Rev G © 2008 MicroE Systems
MicroE Systems – World Headquarters: 125 Middlesex Turnpike • Bedford • MA 01730
www.microesys.com • [email protected] • T. [781]-266-5700 • F. [781]-266-5112
Page 10 of 10
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