Mercury
1000
Analog Output Encoder Systems
For Customer Interpolation- Resolution to
0.078μm
Reflective Linear and Rotary Encoders
TM
Resolution
Sensor as
small as a
dime
Determined by Customer
Electronics
Linear: 20μm to 0.078μm
Rotary: 2,500 to 4.2M CPR
Accuracy
Linear: ± 1μm available
± 3μm to ± 5μm standard
Rotary: Up to ± 2.1 arc-sec
Output
Analog Sine/Cosine and
Digital Index Window
The Mercury 1000 encoder system includes the sensor, double shielded cable, connector, and either a linear or rotary glass scale.
Mercury’s space-saving, integrated configuration gives OEM system designers a breakthrough in performance.
Imagine what you can do with this!
Reduce the cost and size of your system, and increase its performance all
at once. MicroE Systems’ Mercury 1000 kit encoders are smaller, higher
performance, faster to install, and easier to use than any other encoder.
Advanced features include SmartPrecision
™
automatic offset and gain
adjustments during set up to optimize accuracy. No manual adjustments are
needed. The tiny sensor fits into very tight spaces, has broad alignment
tolerances for fast and easy setup and works in both linear and rotary
applications. The entire Mercury 1000 encoder system is EMI shielded for use
in the toughest environments. With standard analog sine/cosine output, use
your interpolation electronics to achieve the resolution required by your
application.
Table of Contents
System & Sensor
Scales
Ordering Information
Required accessories
pg 4
pg 5-6
pg 6
• SmartPrecision Alignment Tool
Optional features
Standard features
• Small sensor with ultra-low Z height; flush screw mounting
• Sensor is 8.4mm (H) x 12.7mm (W) x 20.6mm (L) and weighs 1.6g
• SmartPrecision automatic offset and gain set up
• Analog Sine/Cosine output and Index window
• Fundamental resolution: Linear 20µm; Rotary 2,500 - 16,384 CPR
Interpolated resolution determined by customer electronics:
Linear: 20µm - 0.078µm; rotary: 2,500 to 4.2M CPR
• Entire system is EMI shielded
• Bi-directional index signal
• Index mark at the center or end of the glass scale (linear)
• Alignment Tool enables fast set up (Required, see pg 2)
• 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 for set up
System Configurations
Standard and Optional Equipment
M1000 Encoder System
Standard Equipment
Encoder Sensor
Same for linear and
rotary scales.
Controller
Interface Cable
15 pin standard
D-sub connector with
SmartPrecision
™
automatic gain and
offset adjustments.
SmartPrecision
™
Alignment Tool - SSAT 1000
Required for set up, the built-in
LED indicators make alignment
fast and easy, eliminating the
need for an oscilloscope. In addition,
The Alignment Tool automatically
optimizes the M1000’s gain and
offset for increased accuracy with
the push of a button.
The RS232 Interface Adapter
provides power to the encoder
and connections to a PC. This is
included with the Alignment Tool.
Optional Software
SmartPrecision
™
Software
Optional software lets you view signal
strength, Lissajous plots, position data
and diagnostics.
Page 2 of 6
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
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.
± 2°
± 0.5°
± 0.006°
Mercury
Brand Y
Brand X
Alignment Tolerance Comparison**
Z Standoff
Y
theta X
theta Y
theta Z
Mercury*
± 0.15mm
± 0.20mm for linear
_
± 0.10mm for rotary > 19mm dia.
± 1.0°
± 2.0°
± 2.0°
Brand X
± 0.1mm
± 0.1mm
unspecified
± 0.1°
± 0.006°
Brand Y
± 0.1mm
unspecified
± 1.0°
± 1.0°
± 0.5°
Mercury vs. Best Competitor
Mercury is 50% better
Mercury is 100% better
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
Brand X
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
0.5mm
± 0.1mm
* Dimensions shown illustrate encoder system standoff clearance; see Mercury
Encoder Interface Drawings for correct design reference surfaces.
**Based on published specifications
Page 3 of 6
System Specifications
System
Grating Period
20µm
Signal Period
20µm
System Resolution Fundamental resolution: Linear 20µm; Rotary 2500 - 16,384 CPR
Interpolated resolution determined by customer electronics:
Linear: 20µm - 0.078µm; rotary: 2,500 to 4.2M CPR
Linear Accuracy* Better than ±1µm available; contact MicroE
Better than ±3µm up to 130mm, ±5µm from 155mm to 1m,
±5µm per meter from 1m to 2m
*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.
Analog Output
Pins 7,8,14 and 15
20µm
1V pp ±15%
(Differential)
Across 120Ω
resistor
90°
Rotary Accuracy* Scale O.D.
12.00mm
19.05mm
31.75mm
57.15mm
107.95mm
*Based on ideal scale mounting concentricity
Microradians
±100
±63
±38
±19
±10
Arc-Seconds
±21
±13
±7.8
±3.9
±2.1
Mercury 1000 Outputs
15-pin Standard Male D-sub connector
PIN
FUNCTION
1
Index Window-
2
Index Window+
3
Reserved - do not connect
4
Reserved - do not connect
5
Reserved - do not connect
6
Reserved - do not connect
7
Cosine+
8
Sine+
9
Reserved - do not connect
10
Reserved - do not connect
11
Reserved - do not connect
12
+5VDC
13
Ground
14
Cosine-
15
Sine -
Sensor Size
W:
L:
H:
Power Supply
Temperature
Operating:
Storage:
Humidity:
EMI:
Shock:
Sensor Weight:
Cable:
12.70mm
20.57mm
8.38mm
0.500"
0.810"
0.330"
Operating and Electrical Specifications
5VDC ±5% @ 60mA
0 to 70°C
-20 to 70°C
10 - 90% RH non-condensing
Entire system is EMI/RFI protected
1500G 0.5ms half sine (Sensor)
2.7g (Sensor without cable)
Double Shield. Diameter: 3.6mm (0.142”)
Flex Life: 20 x 10
6
cycles @ 20mm bending radius
Scale Length/Diameter
All Lengths
0.75”
1.25”
2.25”
4.25”
Maximum Speed*
7200mm/s
8640 RPM
5272 RPM
2637 RPM
1318 RPM
Index Window
Pin 2
20µm Typical
Maximum Speed
Linear
Rotary
5VDC
2.05 52.0
*Assumes customer electronics have adequate bandwidth
Mechanical Information - Sensor and Connector
.272 6.91
.166 4.22
A
SENSOR MTG SURFACE
.058 1.47
.13 3.4
.037 0.94
.083 2.11
.155 3.94
.810 20.57
.405 10.29
.24 6.2
.334 8.5
.500 12.70
2X
.106 2.69
THRU.
.345 8.75
.080 2.03
.650 16.5
C
Note: See interface drawing
for important sensor mounting
information.
B
.62 15.7
.142 [3.61]
CABLE DIAMETER
PIN 8
PIN 15
PIN 1
PIN 9
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 6
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]
0.036 [0.9]
Scale Length
Measured Length
is always 5 mm less
then total length
0.250 [6.35]
End Index
Center 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]
±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]
Specifications
Accuracy
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]
Center Index
Specifications
Accuracy
Material
Typical CTE
Index
End Index
±5 µm <1m
±5 µm/m >1m
Soda lime glass
8ppm/°C
Center or End
Model
Scale length
Measured length
L155
6.102 [155]
5.906 [150]
L225
8.858 [225]
8.661 [220]
L325
12.795 [325]
12.598 [320]
L425
16.732 [425]
16.535 [420]
L525
20.669 [525]
20.472 [520]
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 5 of 6
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