Microe systems Dual axis averager mercury 3000si Installation and operating manual

Mercury™3000Si Dual Axis Averager

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Manual No. IM-M3000SiDAA Rev S5

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MicroE Systems was founded to advance encoder technology to

a level never before achieved. Our objective was to design encoder

systems that would be small enough to fit into densely packed OEM

equipment designs, affordable enough for cost-sensitive applications

and easy enough to enable installation, setup and alignment by

assemblers with little training. We are pleased to say that all of

these goals have been realized with the introduction of the Mercury

family of encoders.

Sensor shown

actual size

M10

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Covered by the following patents: US 5,991,249; EP 895,239; JP 3,025,237; US

6,897,435; and EP 1,451,933. Additional patents and patents pending may apply.

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Follow standard ESD precautions. Turn power off before connecting the sensor.

Do not touch the electrical pins without static protection such as a grounded

wrist strap.

Do not touch the glass scale unless you are wearing talc-free gloves or finger

cots. Please read this installation manual for full instructions.

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This product is sold solely for use as a component (or replacement) in an electronic product; therefore it is not

required to, and does not comply with, 21 CFR 1040.10 and 1040.11 which pertain to complete laser

products. The manufacturer of the complete system-level electronic product is responsible for complying with 21

CFR 1040.10 and 1040.11 and for providing the user with all necessary safety warnings and information.

MicroE encoders contain an infrared laser diode or diodes. Emitted invisible laser radiation levels have been

measured to be within the CDRH Class 1 range, which is not considered hazardous; however, to minimize

exposure to the diverging beam, the encoder sensor should be installed in its operational configuration in close

proximity to the encoder scale before power is applied.

• Invisible laser radiation; wavelength: 850 nm

• Max power 2.4 mW CW (4.8 mW CW for Mercury II™)

• CAUTION – The use of optical instruments with this product will increase eye hazard. DO NOT VIEW

DIRECTLY WITH OPTICAL INSTRUMENTS (MICROSCOPES, EYE LOUPES OR MAGNIFIERS).

• All maintenance procedures such as cleaning must be performed with the MicroE encoder turned off.

• Do not insert any reflective surface into the beam path when the encoder is powered.

• Do not attempt to service the MicroE encoder.

INVISIBLE LASER RADIATION

DO NOT VIEW DIRECTLY WITH OPTICAL

INSTRUMENTS

(MICROSCOPES, EYE LOUPES OR

MAGNIFIERS)

Page 1

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SYSTEM ILLUSTRATION PAGE

Encoder with Linear scale 2

Encoder with Rotary scale 3

INSTALLATION INSTRUCTIONS

Encoder System Mounting - Linear 4

Encoder System Alignment - Linear 5

Centering the Index & Calibration - Linear 5

Encoder System Mounting - Rotary 6

Encoder System Alignment - Rotary 7

Centering the Index & Calibration - Rotary 7

REFERENCE SECTION

Installation of Linear Scales 8

Grounding Instructions 9

Recommendations for Power 9

Customer Interface Cable Requirements 10

Serial Output Specifications 11-12

SMARTPRECISION SOFTWARE INSTALLATION 13-19

SPECIFICATIONS

Operating and Electrical 20

Output Connector Pinout 20

Serial Output 21

Operational Modes: Standard Communication 21

Serial Output Specificattion 22

Operational Modes - Trigger Approach Diagram 23

Serial Data Format 24

ENCODER TROUBLESHOOTING

Selected Topics 24

Cleaning Scales 25

Contact MicroE Systems Back Cover

Mercury 3000Si Encoder System

with Linear scale

Page 2

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Scale benching edge

End locator pin

End index mark

Sensor mounting holes (2)

Bracket mounting

holes (2) per

sensor

Optional sensor benching pins (3)

Double

shielded cables

Center index mark

Typical user-supplied

sensor mounting brackets

Top reflective linear scale

Detail A

25 pin High Density

D-sub connector Signal - Sensor 1

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Shown with linear scale

Glass scale

(shown mounted on a linear slide)

Sensors

(shown attached on a linear slide base with

mounting brackets)

Dual Axis/SmartPrecision electronics module

(interpolator)

Scale reference datum;

example shown with benching pins

Cover: Sensor cables

and connectors

Power/Calibration - Sensor 1

Index Calibration Button - Sensor 1 and 2

Signal - Sensor 2

Power/Calibration -

Sensor 2

USB interface

Mounting screws & flat

washers (2 needed per

screw)

Sensor 1

Sensor 2

Mercury 3000Si Encoder System

with Rotary scale

Page 3

Double

shielded cable

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Shown with Rotary scale

Sensors

(shown attached to a customer-supplied

mounting brackets)

Rotary scale

Dual Axis/SmartPrecision electronics module

(interpolator)

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Rotary scale

Mounting hole (2)

Top reflective

rotary scale

Typical user-supplied

sensor mounting bracket

Mounting screws & flat

washers (2 needed per screw)

25 pin High Density

D-sub connector

Signal - Sensor 1

Power/Calibration - Sensor 1

Index Calibration Button - Sensor 1 and 2

Signal - Sensor 2

PowerPower/Calibration -

Sensor 2

USB interface

Sensor 1 Sensor 2

Installation Instructions

Linear Encoders - Mounting

Page 4

Install the sensors on your mounting surfaces

referencing the appropriate datum surface as

shown on the interface drawing. Use 2 washers

per mounting screw.

Benching pins may be used to locate each sensor

if the system mechanical tolerances are adequate.

See data sheet for alignment tolerances, or keep

mounting screws loose for sensor alignment if

benching pins are not used.

Attach the scale to the base

slide. Reference the preferred

datum on the interface drawing

for either end or center index

orientation.

Depending on the mounting

method, attach the scale to the

slide with adhesive. Refer to pg.

8 for details.

Be sure the grating surface of

the scale faces the sensor.

Insure that there is no contact

between these surfaces or

damage may result.

Be sure the source power is off before

connecting the SmartPrecision plug.

Connect the SmartPrecision electronics to the

controller using the pinout diagram described on the

interface drawing.

Insure proper system grounding. Refer to the proce-

dure on pg 9.

Tighten the thumb screws.

Power up the system. The Power and Signal indica-

tors for both sensors will illuminate.

CAUTION: observe precautions for handling elec-

trostatic sensitive devices.

Route the sensor cables through your equipment

to the Dual Axis SmartPrecision electronics module.

A) Remove the three cover screws and the top

half of the connector housing. Do not pull on

the 25-pin D-sub connector or the circuit

board under the insulation layer.

B) Attach each sensor's 5 X 2 connector to the

mating 5 X 2 connector on the circuit board.

C) Route the sensor cables through their channels

in the center of the connector body and place

the cable's hex sleeves in the matching recesses.

Attach the top half of the connector housing

to the bottom half using the three cover screws.

Sensor 2

Sensor 1

Installation Instructions

Linear Encoders - Alignment

Page 5

If benching dimensions cannot be provided, proper sensor alignment may require minor

adjustments to each sensor’s position with respect to the scale. This can be performed easily

using the LED alignment indicators, as illustrated below.

For sensor 1, the Sig 1 multicolor LED will turn from red to yellow-orange to green depending

on sensor alignment. Slowly move the sensor by allowing it to slide on the mounting surface

until the Sig 1 multicolor LED turns green. Optimal alignment will be displayed as a “Bright

Green” LED. Repeat the last step, using sensor 2 and the Sig 2 multicolor LED, to align

sensor 2.

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: Confirm that the Proper Alignment LED blinks when passing over the index.

If not, readjust the sensor in the Y direction and repeat the above procedure. When alignment is

completed, tighten the sensor mounting screws (0.37Nm [3.3 inch-lbs.] maximum torque).

Confirm proper alignment over

the full range of motion.

The “Proper Alignment” LED

must remain green over the

entire range for both sensors.

If not aligned over the entire

range of motion, loosen the

sensors mounting screws and

repeat step 5.

θz

To align the sensor, move it

in the Y or θz directions.

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This procedure must be completed for proper system

operation each time the sensors are aligned or if the

SmartPrecision electronics module is replaced

Position each sensor at least 7mm (1/4”) away from the index

mark on the scale. Next, for sensor 1, push the

Index/Calibration button inside the module just once. The

Power/Calibration indicator for sensor 1, will flash continuously.

Move the scale past sensor 1 in both directions so that the

index mark passes under sensor 1. When the calibration pro-

cedure is complete, the Power/Calibration indicator for sensor 1

stops flashing.

To calibrate sensor 2, push the Index/Calibration button twice. The

Power/Calibration indicator for sensor 2 will flash continuously.

Move the scale past sensor 2 in both directions so that the

index mark passes under sensor 2. When the calibration pro-

cedure is complete, the Power/Calibration indicator for sensor 2

stops flashing.

Improper

Alignment LED

Red:

Sensor 1

Power/

Calibration

Sensor 1

Improper

Alignment LED

Red:

Sensor 2

Power/

Calibration

Sensor 2

Improved

Alignment LED

Yellow-Orange:

Sensor 1

Power/

Calibration

Sensor 1

Improved

Alignment LED

Yellow-Orange:

Sensor 2

Power/

Calibration

Sensor 2

Proper

Alignment LED

Green:

Sensor 1

Power/

Calibration

Sensor 1

Proper

Alignment LED

Green:

Sensor 2

Power/

Calibration

Sensor 2

Sensor 1: Proper

Alignment indicator

Sensor 1:

Calibration / Index

Set Up button

Push once.

Sensor 2: Power/

Calibration indicator

Sensor 2:

Calibration / Index

Set Up button

Push twice.

Sensor 2: Proper

Alignment indicator

Sensor 1: Power/

Calibration indicator

Installation Instructions

Rotary Encoders - Mounting

Page 6

Attach your hub/scale

assembly to the rotary

device. Refer to the

interface drawing. The

reflective surface of the

scale must face the

sensors.

2Install the sensors on your mounting surface referencing the

appropriate datum surface as shown on the interface drawing.

Use 2 washers per mounting screw.

Benching pins may be used to locate each sensor if the system

mechanical tolerances are adequate. See data sheet for alignment

tolerances, or keep mounting screws loose for sensor alignment if

benching pins are not used.

Be sure the source power is off before

connecting the SmartPrecision plug.

Connect the SmartPrecision electronics to the controller

using the pinout diagram described on the interface

drawing.

Insure proper system grounding. Refer to the procedure

on pg 9.

Power up the system. The Power and Signal indicators for

both sensors will illuminate.

CAUTION: observe precautions for handling elec-

trostatic sensitive devices.

Route the sensor cables through your equipment

to the Dual Axis SmartPrecision electronics module.

A) Remove the three cover screws and the top

half of the connector housing. Do not pull on

the 25-pin D-sub connector or the circuit

board under the insulation layer.

B) Attach each sensor's 5 X 2 connector to the

mating 5 X 2 connector on the circuit board.

C) Route the sensor cables through their channels

in the center of the connector body and place

the cable's hex sleeves in the matching recesses.

Attach the top half of the connector housing

to the bottom half using the three cover screws.

Sensor 2

Sensor 1

Installation Instructions

Rotary Encoders - Alignment

Page 7

If benching dimensions cannot be provided, proper sensor alignment may require minor

adjustments to each sensor’s position with respect to the scale. This can be performed easily

using the LED alignment indicators, as illustrated below.

For sensor 1, the Sig 1 multicolor LED will turn from red to yellow-orange to green depending

on sensor alignment. Slowly move the sensor by allowing it to slide on the mounting surface

until the Sig 1 multicolor LED turns green. Optimal alignment will be displayed as a “Bright

Green” LED. Repeat the last step, using sensor 2 and the Sig 2 multicolor LED, to align

sensor 2.

IIMMPPOORRTTAANNTT

: Confirm that the Proper Alignment LED blinks when passing over the index.

If not, readjust the sensor in the Y direction and repeat the above procedure. When alignment is

completed, tighten the sensor mounting screws (0.37Nm [3.3 inch-lbs.] maximum torque).

6Confirm proper alignment over the full range of motion.

The “Proper Alignment” LED must remain green over the entire

range for both sensors. If not aligned over the entire range of

motion, loosen the sensors mounting screws and repeat step 5.

θz

To align the sensor, move it

in the Y or θz directions.

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This procedure must be completed for proper system

operation each time the sensors are aligned or if the

SmartPrecision electronics module is replaced

Position each sensor at least 7mm (1/4”) away from the index

mark on the scale. Next, for sensor 1, push the

Index/Calibration button inside the module just once. The

Power/Calibration indicator for sensor 1, will flash continuously.

Move the scale past sensor 1 in both directions so that the

index mark passes under sensor 1. When the calibration pro-

cedure is complete, the Power/Calibration indicator for sensor 1

stops flashing.

To calibrate sensor 2, push the Index/Calibration button twice. The

Power/Calibration indicator for sensor 2 will flash continuously.

Move the scale past sensor 2 in both directions so that the

index mark passes under sensor 2. When the calibration pro-

cedure is complete, the Power/Calibration indicator for sensor 2

stops flashing.

Sensor 1: Proper

Alignment indicator

Sensor 1:

Calibration / Index

Set Up button

Push once.

Sensor 2: Power/

Calibration indicator

Sensor 2:

Calibration / Index

Set Up button

Push twice.

Sensor 2: Proper

Alignment indicator

Sensor 1: Power/

Calibration indicator

Move the scale past both

sensor s so that the index

mark passes under both

sensors as described in

step 7.

Improper

Alignment LED

Red:

Sensor 1

Power/

Calibration

Sensor 1

Improper

Alignment LED

Red:

Sensor 2

Power/

Calibration

Sensor 2

Improved

Alignment LED

Yellow-Orange:

Sensor 1

Power/

Calibration

Sensor 1

Improved

Alignment LED

Yellow-Orange:

Sensor 2

Power/

Calibration

Sensor 2

Proper

Alignment LED

Green:

Sensor 1

Power/

Calibration

Sensor 1

Proper

Alignment LED

Green:

Sensor 2

Power/

Calibration

Sensor 2

Reference Section

Installation of Linear Scales

Page 8

MicroE Systems

0.2L 0.6L 0.2L

Benching pins

Positioning the Scale

Note: Before beginning mounting procedure, use talc-free gloves or finger cots to handle the scales.

"Benching" the scale to the system means aligning the scale by means of benching pins. Pin locations are described on the appropriate interface drawing.

Two benching pins are recommended on the long side of the scale and one at the end as shown . This is marked datum A on the interface drawing.

Position the benching pins in from either end. 20% of the overall

scale length is the recommended location from the edge.

Be sure the benching pins do not extend too high in the Z direction to

prevent mechanical interference with the sensor or sensor mount.

End

Benching

Mounting the Scale

MicroE Systems' linear scales should be affixed to the mounting surface. Two different approaches are described below:

RTV around entire

outside edge of scale.

End Benching

Hard epoxy

at one corner,

this end only.

Epoxy and RTV Mounting (Recommended for best accuracy)

1Make sure the mounting surface is

clean and dry.

Optionally, scale clamps may be used to secure the

scale while the adhesive cures. Avoid damage to

the top surface.

Side view showing

optional scale clamps

and scale. Space

clamps every 75mm

on scales over 150

mm in length.

4Apply a hard epoxy, such as Tra-Con’s Tra-Bond 2116, to the end of the scale at the end benching pin. Apply 100% Silicone RTV adhesive

around the edges of the scale. This method allows thermal expansion from the benched end of the scale. After adhesive curing, remove

the scale mounting clamps or, if permanently installing clamps, make sure they do not interfere with the sensor or sensor mount.

MicroE Systems

2Align the scale by placing the edges against the benching pins.

Benching pins

Scale clamp

with adhesive

Mounting clamp

Benching pins

MicroE Systems

Two Sided Adhesive Tape Mounting

Make sure the mounting surface is clean and dry. Peel the

cover paper off and place the scale above the final location.

Align the scale by placing the edges against the benching pins.

Gently place the scale on the mounting surface. Positioning adjustments

can be made until the scale is firmly pressed down. After final positioning,

push down on the top of the scale to secure it.

End Benching

Hard epoxy at

one corner,

this end only.

Page 9

Reference Section

Sensors mounted with good electrical contact to a well-grounded surfaces (preferred)

1. 25-pin D-sub connector grounding: The encoder's connector shell must be in intimate, electrically conductive contact with the customer-

supplied mating connector, which must be isolated from the controller's ground. If a customer-supplied shielded cable connects the encoder

to the controller, then the shielding on the customer-supplied cable must be isolated from the controller's ground.

2. The sensors’ mounting surfaces must have a low impedance (DC/AC) connection to ground. The encoder sensors’ mounting surfaces may have

to be masked during painting or anodizing to insure good electrical contact with the sensors.

For Mercury 3000Si Dual Axis Averager encoder systems to operate reliably, it is essential that the sensor and cable shield are ground-

ed properly according to the following instructions. The diagrams below show how to make the connections when the encoder's con-

nector is plugged into the customer's controller chassis. If a customer-supplied extension cable is used, it should be a double shielded

cable with conductive connector shells and must provide complete shielding over the conductors contained within it over its entire

length. Furthermore, the shields should be grounded at the connection to the controller chassis the same way as the encoder connec-

tors in the diagrams below.

Note: For best performance, isolate encoder shield from motor cable shields and separate encoder cable as far possible from motor cables.

Sensors mounted to a surfaces that are grounded through bearings or poorly-grounded surfaces, or non-conducting surfaces

1. 25-pin D-sub connector grounding: The encoder's connector shell must be in intimate, electrically conductive contact with the customer-supplied mating

connector, which must be connected to the controller's ground. If a customer-supplied shielded cable connects the encoder to the controller, then the

shielding on the customer-supplied cable must be connected to the controller's ground. The controller must be grounded to earth at the point of installation.

2. The encoder sensors must be mounted so that they are electrically isolated from ground.

Mercury encoders require a minimum of 4.75V DC continuously. When designing circuits and extension cables to use Mercury encoders, be sure to

account for voltage loss over distance and tolerances from the nominal supply voltage so that at least 4.75V DC is available to the Mercury encoder

under all operating conditions. The input voltage should not exceed 5.25V DC.

Grounding Instructions for Mercury 3000Si Dual Axis Encoder Systems

Recommendations for Power

Inner Shield: Insulated from outer shield,

sensor and connector housing. Connected

to circuit common internally.

Outer Shield: Connect to sensor

and connector housing.

Electrically conductive

mechanical connection

(as supplied by MicroE

Systems).

Do not ground shroud.

Page 10

Customer Interface Cable Requirements

Customer cables that interface to Mercury series encoders must have the following characteristics:

• Twisted pair signal wiring.

• Characteristic impedance of 100-120 ohms.

• Sufficient wire gauge to meet the minimum voltage requirement at the encoder, for example 24AWG gauge wire for a 2m length cable.

Examples of acceptable cables with 24 AWG gauge wire and 5 twisted pairs are Belden 9832, 8105 or other manufacturer’s

equivalents.

• Single shield cable with a minimum of 90% coverage. Note that a double shielded cable may be required in high-noise applications.

Signal Wiring:

Each differential signal should be connected to a corresponding twisted pair as follows:

Shield Termination:

The customer's cable shield should be in 360° contact with the connector shroud and the connector shell to provide complete shielding. The

connector shell should be metal with conductive surfaces. Suggested metal connector shells for use with Mercury 3500, 3000, 3000Si,

3000SiDAA, 3000DAA, and 2000 encoders: AMP 748676-1 or equivalent; for Mercury 1000 and 1500S encoders: AMP 745172-3, -2, or -1

where the dash number is dependent on the customer's outside cable diameter. The shield should be terminated as illustrated in the following

diagram.

Fold braided shield back over jacket. Example shows double-shielded cable. Dimensions shown

are for illustration only.

Mercury 3000SiDAA

Signal Twisted Pair

SD0+ Pair 1

SD0-

Trigger+ Pair 2*

Trigger-

SCK+ Pair 3

SCK-

N_CS+ Pair 4

N_CS-

+5V Pair 5

GND

* For synchronous system connection only.

Revision pending.

Introduction

Historically, the method of choice for many optical position feedback systems has been A quad B (Quadrature) output. The limitation

of this method is output speed, especially when the interpolation level is high. When the optical sensor speed and/or the

interpolation multiplier is set high, the Quadrature output frequencies will be extremely high and out of the range of the

Quadrature counters of most standard motion controllers.

This limitation can be avoided by sending the position information in parallel format or in a serial word format. The parallel

formats are cumbersome to cable (especially wide word lengths) and are more susceptible to noise interference. Therefore, a

serial data word format is the data communication method of choice.

The Mercury 3000Si Dual Axis Averager Interpolator has the ability to output a position word in a serialized format. This allows

very fast communication between an interpolator and customer application. The speed limitation of the Quadrature format is

thus eliminated.

Signal Description

The interface from your electronics to the Mercury 3000SiDAA interpolator uses four signals, n_spiEnable (n_CS), spiDataOut

(SDO), spiClock (SCK), and optional spiTrigger (TRIG). Each signal is differential and RS-422 compatible. See table for interpolator

signal names, pin names, and pin locations:

Serial Output Specification

Page 11

Signal Description

Signal name Pin Name Function I/O 15 pin HD

Interpolator Connector

Referenced

n_spiEnable n_CS+ Chip Select+ Input 7

n_CS- Chip Select- Input 8

spiClock SCK+ Serial Clock+ Input 14

SCK- Serial Clock- Input 15

spiDataOut SDO+ Serial Data Out+ Output 5

SDO- Serial Data Out- Output 4

spiTrigger TRIG+ External Trigger+ Input 10

TRIG- External Trigger- Input 9

Revision pending.

Index Processing

A unique physical position is referenced on all gratings and is called an index position. The value of this position is determined

during an index capture routine initiated by a button press or the SmartPrecision Software and is permanently stored for use

after power cycling. The index value has the same resolution as the interpolated position.

The M3000SiDAA has four modes of operation that use the index position to generate a physical reference position. The posi-

tion word calculated by the M3000SiDAA electronics is a 28-bit number, which includes 18 fringe counter bits and 10 sub-

fringe interpolation bits. The fringe counter keeps track of the number of electrical cycles encountered caused by a grating

moving past a sensor and can be reset. The sub-fringe position is absolute because the voltage relationship between sine and

cosine are fixed electrically and therefore cannot be reset or cleared.

A physical mark on the grating called an index window is used to generate an accurate index position. The index window

is approximately one fringe wide. By monitoring the edges of the window with respect to the absolute sub-fringe position

during the index capture mode, an accurate index position is calculated and stored.

At power up the encoder is in an undefined position relative to the outside world. By traveling past the index mark on the scale

and knowing where the index is relative to the outside world the encoder position becomes defined. The M3000SiDAA sup-

ports the following index processing modes:

No Index: No changes are made to the position word at the index mark.

Mode 1: Zeros the fringe counter at the first encounter with index mark after power up.

Mode 2: Zeros the fringe counter at every encounter with index mark.

Mode 3: Zeros the fringe counter at the first encounter with index mark after power up and

subtracts the index position from the calculated position making the index mark the

zero position of the encoder.

Mode 4: Zeros the fringe counter at every encounter with index mark after power up and

subtracts the index position from the calculated position making the index mark the

zero position of the encoder.

The Index mode can be factory set or selected by the customer using the optional SmartPrecision software.

Serial Output Specification

Page 12

Hardware Requirements:

SmartPrecision Software for M3000SiDAA requires a PC with the following minimum specifications:

· Windows 2000 or XP operating systems

· 300MHz

· 32Mb RAM

· 1024 x 768 or higher screen resolution with High Color (16 bit color)

· 20Mb free disk space

· One USB port (Version 1.1 or higher)

MicroE SS300cDI SmartPrecision Software (Preliminary)

Software Notes:

1) This is Preliminary Software - Functionality not comprehensively tested and some limitations exist.

2) Intended for use on Windows 2000 or XP systems, with display resolution of at least 1024x768 (1024x768 is

optimal).

Installing the Software:

1) IMPORTANT - INSTALL SOFTWARE BEFORE CONNECTING ELECTRONICS - this will allow the proper driver files

to be copied to the PC.

2) Insert Install CD - if setup does not automatically start - navigate to CD folder and run 'setup.exe'

3) To start the software - Click on 'Start>Programs>MicroE SmartPrecision for SS300cDI>SS300cDI Software' in the

Start Menu.

Installing the USB Driver:

USB Driver Installation Windows 2000:

1) Connect the USB cable between the host computer and the M3000SiDAA.

2) When the electronics are on, Windows will notify you it has found new hardware prompting you with a "Found

New Hardware" wizard. Press the Next button.

3) Select "Search for a suitable driver for my device (recommended)" and press the Next button.

4) Select "Specify a location" under "Optional search locations:" and press the Next button.

5) Press the Browse button to locate the SiF32X_USB.inf driver Installation file. SiF32X_USB.inf is located in

"Install Directory\Driver" under the directory where the software was installed. The default install directory is

..Program Files\MicroE Systems\ss300cDI.

Once this file is selected press the OK button.

6) Verify that the correct path and filename are shown and press the Next button.

7) Press the Finish button.

USB Driver Installation Windows XP:

1) Connect the USB cable between the host computer and the M3000SiDAA.

2) When the electronics are on,, Windows will notify you it has found new hardware prompting you with a "Found

New Hardware" wizard.

3) Select "Install from a list or specific location(Advanced)" and press the Next button.

4) Select "Include this location in the search". Press the Browse button to locate the SiF32X_USB.inf driver

installation file. SiF32X_USB.inf is located in "Install Directory\Driver" under the directory where the software

was installed. The default install directory is ..Program Files\MicroE Systems\ss300cDI. Once this file is selected

press the OK button.

5) Verify that the correct path and filename are shown and press the Next button.

6) Press the Finish button.

Optional SmartPrecision Software Installation Instructions

Page 13

The M3000SiDAA interpolator module can be configured quickly and easily using the SmartPrecision Software. The M3000SiDAA inter-

polator will accept input from two separate encoders. The M3000SiDAA has three output channels. These can be configured to output

the following: Channel 1, Channel 2, Average ((Ch1+Ch2)/2), and/or Difference (Ch1-Ch2). The main screen shows Encoder Position,

Signal Level, Alarm Status, Data Plots, and Setup.

Encoder Position:

The Encoder Position box displays the current position data for each of the three output channels.

Each output can be reset or zeroed independently. The units can be changed from encoder counts, to any number of linear or rotary units.

SSeettuupp

Calibrate: Starts the calibration routine for the selected channel.

Configure: Allows user to configure the Input and Output Channel settings,

Calibration settings, SPI settings, and Hardware/Communication

settings

Display Settings: Configures the SmartPrecision Software Display

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Encoder Signal: Displays the encoder signal plot for each input channel

Signal Strength: Displays the encoder signal strength for each in out channel.

Encoder Position: Displays the encoder position for each in out channel.

Configuration and Setup - SmartPrecision Software

Main Screen

Page 14

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Selects the input channel index that will be used for the Averaged output.

Example shown:

Index for Channel 1 selected

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The Mercury Dual Axis Averager uses two sensors as inputs and has three output channels. Each sensor's signal is processed for

accuracy enhancement and interpolated. The signals, or their average or difference, are routed to each of the three output channels.

The routing assignments can be changed using SmartPrecision Software in the Configuration Settings dialog box. There are four possi-

ble configurations for the output channel assignments as shown in the following table:

M3000SiDAA Configuration

Configurations screen

Output Configuration Assignment for Output Assignment for Output Assignment for Output

Channel 1 Channel 2 Channel 3

"Channel 1 - Channel 2 - Average" Sensor 1 Sensor 2 Average of Sensor 1

and Sensor 2

"Channel 2 - Channel 1 - Difference" Sensor 2 Sensor 1 Difference

(Sensor 1 minus Sensor 2)

"Average - Difference - Channel 1" Average of Sensor 1 Difference Sensor 1

and Sensor 2 (Sensor 1 minus Sensor 2)

"Difference - Average - Channel 2" Difference Average of Sensor 1 Sensor 2

(Sensor 1 minus Sensor 2) and Sensor 2

Page 15

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The M3000SiDAA allows the user to configure the serial word to increase sampling rate. Some applications do not

require 18 bits of fringe count. The SPI Settings box allows the user to reduce the fringe counter to suit the applica-

tion and thereby increasing the maximum sampling rate of the system.

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The format of the SPI output can be configured to have the status word at the beginning or at the end of the serial

word.

SSPPIIMMooddeess

There are two different SPI modes the users can select from:

Free Running or Standard communication mode

latches the output buffer with the current data when the

falling edge of Chip Select is asserted.

The Trigger Acquisition mode

can be used in applications where synchronization of the position data to an

event is required. Often, this mode is used when a fixed latency between a clock signal and the sampled

position data is required. If this option is selected a new calculation cycle starts each time the falling edge

of Chip Select is asserted. NOTE: This mode is equivalent to the SS-350cSI Trigger line. It use the falling

edge of the cs as trigger

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Configure how the serial word data is manipulated when encountering the index angle position.

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Allows one hardware Chip Select to be used for all channels to minimize wiring connections.

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Allows the user to select the optional Feedback clock. The Feedback clock signal is used to eliminate propagation

delays due to long cable lengths.

CCRRCCSSeettttiinngg

Allows the user to generate a CRC (Cyclic Redundancy Check). The CRC is located within the status word. The CRC

is only valid when the status byte is at the end of the serial word (see SSPPIIOOuuttppuuttFFoorrmmaattabove) and the wholw

fringes (18 bits) are read.

Note: The polynomial used for CRC calculation is 10011. The resulting checksum is 4 bits and performed on the 28

bits position word only, the status bits are not used in the CRC calcualtion.

M3000SiDAA Configuration

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If two separate axes are used the recommended setting is "Calibrate signal and center index". For applications where two

sensors are used on the same axis or if the index mark is not in the range of motion for one of the encoders, the "Calibrate

signal only" will allow proper calibration of the signal.

Warning: Changing configuration settings while in closed loop control is not recommended.

Page 16

Display Setting

The Status Display in the center

of the screen gives the user a

snapshot of the interpolator con-

figuration as well as Index posi-

tion indication. The indicator

light on the SmartPrecision soft-

ware mimics the LED on the

M3000SiDAA. The indicator will

be green as long as the encoder

is within the index window.

Dual Axis Software Display Settings

Page 17

Calibration - SmartPrecision Software

Calibration should be performed only after each of the encoders is aligned properly.

Calibration can be initiated by either the Calibrate button using Smart Signal Software or through the recessed push

button switch in the M3000SiDAA.

To calibrate Channel 1:

Through Software: Select "CALIBRATE SIGNAL on INPUT CHANNEL 1"

Through Hardware: Push the recessed button once.

The power indication for Channel 1 will rapidly blink until the calibration routine is complete.

To calibrate Channel 2:

Through Software: Select "CALIBRATE SIGNAL on INPUT CHANNEL 1"

Through Hardware: Push the recessed button twice quickly (within 3 sec).

The power indication for Channel 2 will rapidly blink until the calibration routine is complete.

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Confirm Calibration screen

Page 18

Table of contents