iC-Haus iC-PZ Getting Started Manual

Brand: iC-Haus

Model: iC-PZ

Type: Getting Started Manual

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CONTENTS

INTRODUCTION 1

GENERAL SETUP AND REQUIREMENTS 2

HARDWARE SETUP 3

SOFTWARE SETUP 4

ADJUSTMENT PROCEDURE OVERVIEW 5

PROCEDURE FOR MECHANICAL

ADJUSTMENT 5

Mechanical coarse adjustment . . . . . . . . 5

Mechanical ne adjustment . . . . . . . . . . 5

PROCEDURE FOR AUTOMATIC

ELECTRICAL ADJUSTMENT 6

Filter conguration . . . . . . . . . . . . . . . 6

Automatic analog adjustment . . . . . . . . . 7

Automatic digital adjustment . . . . . . . . . 7

Automatic eccentricity adjustment (optional) . 8

FURTHER CONFIGURATION HINTS 9

Filter conguration for system development . 9

Port conguration and output signals . . . . . 9

BiSS Reader Software . . . . . . . . . . . . . 9

REVISION HISTORY 10

INTRODUCTION

The iC-PZ is an EncoderBlue

lensless reective opti-

cal encoder IC featuring integrated HD Phased Array

photosensors and a blue LED in an OptoQFN32 pack-

age. It is designed for high-resolution absolute position

measurement without the need for highly accurate align-

ment of each encoder system. To achieve this goal,

numerous automatic calibrations are implemented.

This application note discusses the proposed adjust-

ment procedure both for the development phase and

mass production.

Complete information on the iC-PZ is available at

www.ichaus.de/iC-PZ

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GENERAL SETUP AND REQUIREMENTS

Figure 1 shows the setup used in this application note.

It consists of

•Motherboard (iC-PZ EVAL PZ1D) [1]

•Scanner module (iC-PZ2656 EVAL PZ1M) [2]

•BiSS-to-PC adapter (iC-MB4 iCSY MB4U) [3]

•Drive with mounted code disc (PZ03PS) [4]

•A PC with running Windows 7 operating system.

Note:

Other BiSS-to-PC adapters like iC-MB3 iCSY

MB3U, iC-MB3 iCSY MB3U-I2C and iC-MB5 iCSY

MB5U can also be used. In any case, the related

driver has to be installed before connecting the BiSS-

to-PC adapter to the PC. The latest drivers are

available at www.ichaus.de/adapter_drivers. A com-

parison of the different adapters can be found at

www.ichaus.de/MB3AN2_appnote_en.

Note:

The graphical user interface (GUI) software

requires a windows operating system and the Lab-

VIEW

™

Run-Time Engine (RTE). See chapter SOFT-

WARE SETUP for further information.

Note:

The adjustment procedures described in chap-

ters PROCEDURE FOR AUTOMATIC ELECTRICAL

ADJUSTMENT and PROCEDURE FOR MECHANI-

CAL ADJUSTMENT are applicable for other setups

as well if the respective electrical connections are

correct.

Figure 1:

Hardware setup: Motherboard

[1]

, scanner module

[2]

, BiSS-to-PC adapter

[3]

and drive with

mounted code disc [4]

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HARDWARE SETUP

To congure iC-PZ using the graphical user interface

software, the hardware has to be connected as follows:

Connect the scanner module to the motherboard

via the included 20-pin ribbon cable.

Connect the motherboard to the BiSS-to-PC

Adapter.

Connect the BiSS-to-PC Adapter to the PC via

the usb cable. Please make sure you have in-

stalled the related driver before connecting the

BiSS-to-PC adapter to your PC.

Ensure the jumper setup of the scanner module

is in default conguration:

•CFG_0/ JP1 = M (= VDDIO/2)

•CFG_1/ JP2 = L (= GNDIO)

•CFG_2/ JP3 = H (= VDDIO)

Figure 2:

Scanner module (iC-PZ2656 EVAL PZ1M)

and code disc PZ03PS in detail

Ensure jumper setup of motherboard is in the

following conguration:

•JP1 = Closed (VDDIO supplied by VDDA)

•JP2 = Closed (GNDIO connected to GNDA)

•JP3 = Open

•JP4 = Open

•JP5 = Closed (BiSS Port enabled)

Figure 3:

Motherboard (iC-PZ EVAL PZ1D) in detail

6. Connect a 5V power supply to the motherboard.

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SOFTWARE SETUP

For easy conguration of iC-PZ, iC-Haus offers a graph-

ical user interface (GUI) that can be used on a PC that

runs the Windows operating system.

Download the latest iC-PZ GUI. Note that the GUI

requires the LabVIEW

™

Run-Time Engine (RTE).

Both a software package with GUI only and a

software package with GUI and its related RTE

version are available at www.ichaus.de/iC-PZ.

Install the iC-PZ GUI. A detailed description of the

GUI setup can be found in the enclosed software

manual.

Start the iC-PZ GUI and accept the End User

License Agreement (EULA).

4. Click ’Connect’.

Figure 4: GUI start-up

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ADJUSTMENT PROCEDURE OVERVIEW

Figure 5: Order of adjustment procedures

PROCEDURE FOR MECHANICAL ADJUSTMENT

Best measurement results are achieved at the ideal

mechanical position. iC-PZ supports this process of

nding the ideal position by offering white marks on the

scanner module for coarse adjustment and dynamic

values in the GUI for ne adjustment.

Mechanical coarse adjustment

Figure 6:

White marks on scanner module

(iC-PZ2656 EVAL PZ1M) for mechanical

coarse adjustment

•

White marks on top of the scanner module

(iC-PZ2656 EVAL PZ1M) help to easily nd the coarse

position of the sensor iC with respect to the code track.

The scanner module is moved until the curved white

mark completes the cicumference of the code disc as

shown in Figure 6. Note that the recommended air

gap betweeen code disc and sensor is 1 mm to 2 mm.

Mechanical ne adjustment

•

Rotate/ move at least at minimum speed required for

the automatic analog adjustment. The following val-

ues are recommended:

Rotary (iC-PZ2656): 300 RPM

Linear (iC-PZ205): 25.6 cm/s

•

In the GUI tab ’Signal Conditioning’ section ’Digital Ad-

justment’ enable dynamic phase and dynamic scale

adjustment by setting

AI_S_SEL = ’4’ [ = 0x04]

AI_P_SEL = ’4’ [ = 0x04]

•

Continuously read AI_PHASES and AI_SCALES. The

registers show the currently effective adjustment val-

ues and are marked with a yellow frame in Figure

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Figure 7: Mechanical adjustment

•

By mechanical adjustment, change the position of the

IC with respect to the code disc/ linear scale until

AI_SCALES = ’1.00’

AI_PHASES = ’0 deg e’

•

When the ideal position is found, stop ’Reading...’ and

disable dynamic phase and dynamic scale adjustment

by setting

AI_S_SEL = ’Disabled’ [ = 0x00]

AI_P_SEL = ’Disabled’ [ = 0x00]

Then perform automatic electrical adjustment.

PROCEDURE FOR AUTOMATIC ELECTRICAL ADJUSTMENT

iC-PZ is designed for high resolution position measure-

ment without the need for precise mechanical alignment

of the IC to the code disc or linear scale. Highly au-

tomated production processes can only provide place-

ment with limited accuracy. To correct the errors re-

sulting from mechanical misplacement, iC-PZ provides

numerous automatic calibration functions. The follow-

ing procedure is proposed for the automatic electrical

adjustment:

Filter conguration

•

In tab ’System Cong’ set lter parameters to its de-

fault values

IPO_FILT1 = ’110’ [ = 0x6E]

IPO_FILT2 = 4 [ = 0x04]

to allow stable operation with systems that are not yet

electrically adjusted.

Figure 8: Filter conguration

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Automatic analog adjustment

•

In tab ’Signal Conditioning’ section ’Analog Adjust-

ment’ set

AC_COUNT = ’0d08’ [ = 0x08]

AC_SEL1 = ’15 (default)’ [ = 0x0F]

AC_SEL2 = ’Best but longest auto-calibration’

[ = 0x00]

•

Rotate/ move at least at minimum speed required for

the automatic analog adjustment. The following val-

ues are recommended:

Rotary (iC-PZ2656): 300 RPM

Linear (iC-PZ205): 25.6 cm/s

•

Send command AUTO_ADJ_ANA to execute auto-

calibration.

Figure 9: Automatic analog adjustment

Automatic digital adjustment

•

In tab ’Signal Conditioning’ section ’Digital Adjust-

ment’ set

AC_COUNT = ’0d08’ [ = 0x08]

AC_SEL1 = ’15 (default)’ [ = 0x0F]

AC_SEL2 = ’Best but longest auto-calibration’

[ = 0x00]

•

Rotate/ move at least at minimum speed required for

the automatic digital adjustment. The following values

are recommended:

Rotary (iC-PZ2656): 300 RPM

Linear (iC-PZ205): 25.6 cm/s

•

Send command AUTO_ADJ_DIG to execute autocali-

bration.

Figure 10: Automatic digital adjustment

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Automatic eccentricity adjustment (optional)

•In tab ’Position Offset’ set

ST_OFF = ’0’ [ = 0x00] (iC-PZ revision Z only)

Figure 11: Offset

•

In tab ’Signal Conditioning’ section ’Eccentricity Ad-

justment’ set

AC_COUNT = ’0d04’ [ = 0x04]

AC_SEL1 = ’15 (default)’ [ = 0x0F]

AC_SEL2 = ’Best but longest auto-calibration’

[ = 0x00]

ECC_EN = ’0’ [ = 0x00]

•

Rotate at least at minimum speed required for the au-

tomatic eccentricity adjustment. The following value

is recommended:

Rotary (iC-PZ2656): 300 RPM

•

Send command AUTO_ADJ_ECC to execute auto-

calibration.

•To enable eccentricity correction set

ECC_EN = ’1’ [ = 0x01]

Figure 12: Automatic eccentricity adjustment

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•

After performing automatic adjustment procedures

analog and ABZ output signals can be checked with

an oscilloscope. Figure shows the positive sine (yel-

low) and cosine (blue) signal at output pins PSIN

and PCOS of the motherboard (iC-PZ EVAL PZ1D).

Please note that the single-ended output signals

should have an offset of 2.5 V and an amplitude of

about 250 mV in default analog output selection.

Figure 13:

Measuring analog output signals at pin

PSIN and PCOS of motherboard (iC-PZ

EVAL PZ1D)

Figure 14:

Single-ended analog output in clockwise

rotation: Positive sine (yellow) and cosine

(blue) with offset of 2.5 V and amplitude of

about 250 mV

FURTHER CONFIGURATION HINTS

Filter conguration for system development

•The default lter values

IPO_FILT1 = 110 [ = 0x6E]

IPO_FILT2 = 4 [ = 0x04]

ensure stable lter operation before analog signal ad-

justment compensates signal errors. However, with

the default settings, neither high-precision nor high-

dynamic-systems show best performance. It is thus

recommended to change the lter settings after signal

adjustment. As a starting point for system develop-

ment, the following settings are recommended:

IPO_FILT1 = 25 [ = 0x19]

IPO_FILT2 = 4 [ = 0x04]

Port conguration and output signals

•

The jumper setup of the scanner module (iC-PZ2656

EVAL PZ1M) recommended in this application note

enables analog (PORTC), ABZ (PORTB) and BiSS

(PORTA) outputs. Other possible output signals are

SSI, UVW and SPI. For more information regarding

the port conguration check the eval board descrip-

tion and the datasheet at www.ichaus.de/iC-PZ

BiSS Reader Software

•

To evaluate the BiSS sensor communication, iC-Haus

offers a BiSS Reader Software. Note that

the BiSS Reader requires LabVIEW

™

Run-Time

Engine (RTE). The current version and its re-

lated software manual are available with RTE at

www.ichaus.de/BiSS_gui_rte and without RTE at

www.ichaus.de/BiSS_gui.

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REVISION HISTORY

Rel. Rel. Date∗Chapter Modication Page

A1 2019-04-02 all Initial release

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