Netzer DS-40 Absolute Rotary Encoder User Manual

User Manual for Netzer models including: DS-40 Absolute Rotary Encoder, DS-40, DS-40 Rotary Encoder, Absolute Rotary Encoder, Rotary Encoder, Absolute Encoder, Encoder

DS-40 User Manual

DS-40 ABSOLUTE ROTARY ENCODER | Netzer

File Info : application/pdf, 9 Pages, 3.93MB

DS-40-UM-V04

ABSOLUTE POSITION ROTARY ELECTRIC ENCODERTM
USER MANUAL DS-40
Copyright © 2022 Netzer Precision Position Sensors A.C.S. Ltd. All rights reserved.

DS-40-UM-V04

ABSOLUTE POSITION ROTARY ELECTRIC ENCODERTM
Table of Contents
1. Preface......................................................................................................................... 2 1.1 Version 4.0: November 2022 ........................................................................ 2 1.2 Applicable documents.................................................................................... 2
2. ESD Protection ...................................................................................................... 2
3. Product overview ............................................................................................2-3 3.1 Overview.............................................................................................................. 2 3.2 Installation flow chart ................................................................................... 2 3.3 Encoder mounting............................................................................................ 3
4. Unpacking............................................................................................................... 3 4.1 Standard order............................................................................................... 3
5. Electrical interconnection................................................................................. 4 5.1 Absolute position over SSi or BiSS-C ...................................................... 4 5.2 Setup mode over NCP .................................................................................. 4 5.3 Electrical connection and grounding ...................................................... 4
6. Software installation.......................................................................................... 4 6.1 Minimum requirements .............................................................................. 4 6.2 Installing the software................................................................................ 4
7. Mounting verification......................................................................................... 5 7.1 Starting the Encoder Explorer................................................................... 5 7.2 Mechanical installation verification........................................................ 5
8. Calibration.......................................................................................................... 5-7 8.1 Offset calibration .......................................................................................... 5 8.2 CAA calibration............................................................................................... 6 8.3 Setting the encoder zero point ................................................................. 7 8.4 Jitter test.......................................................................................................... 7
9. Operational mode ................................................................................................ 7 9.1 SSi / BiSS ..............................................................................................................7
10. Mechanical drawing............................................................................................ 8

HARSH ENVIRONMENT

DS-40

USER MANUAL

ABSOLUTE POSITION ROTARY ELECTRIC ENCODERTM

HARSH ENVIRONMENT

DS-40

USER MANUAL

1. Preface
1.1 Version 4.0: November 2022 1.2 Applicable documents · DS-40 electric encoder data sheet

2. ESD protection
As usual for electronic circuits, during product handling do not touch electronic circuits, wires, connecters or sensors without suitable ESD protection. The Integrator / operator shall use ESD equipment to avoid the risk of circuit damage.
ATTENTION
OBSERVE PRECAUTIONS FOR HANDLING ELECTROSTATIC SENSITIVE DEVICES

3. Product overview
3.1 Overview The DS-40 absolute position Electric EncoderTM is a revolutionary position sensor originally developed for harsh environment critical applications. Currently it performs in a broad range of applications, including defense, homeland security, aerospace, and medical and industrial automation.
The Electric EncoderTM non-contact technology relies on an interaction between the measured displacement and a space/ time modulated electric field.
The DS-40 Electric EncoderTM is semi-modular, i.e., its rotor and stator are separate, with the stator securely housing the rotor.
(1) Encoder stator
(2) Encoder rotor
(3) Encoder mounting ears
(4) Encoder cable
1 2

3.2 Installation flow chart
Mechanical mounting

Mechanical compensation

Electric installation

Mounting

verification

Electric / SW compensation 4

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USER MANUAL

3.3 Encoder mounting
The encoder rotor (2) attaches to the host shaft by pressing it against a dedicated shoulder (b). A screw and washer or circular spring and washer at the end of the shoulder maintain pressure. The encoder stator (1) is centered by circumferential step (a) and attached to the host stator (c) using three M2 screws, recommended torque of 0.3Nm.
Note: DO NOT use screw locking materials contain Cyanoacrylate which interact aggressively with the sensor body made of Ultem.

Encoder stator / Rotor relative position The rotor is floating therefore, for proper relative axial mounting, distance "H" between the shaft shoulder (b) and stator mounting recess (a) should be ±0.05 mm nominal. For ease of mechanical mounting compensation by rotor shims, the recommended distance is ±0.05 mm. The optimal recommended amplitude values are middle of the range according to those shown in the Encoder Explorer software and vary according to the encoder type.
H ±0.05 mm

The DS-40 amplitudes compensation: Mechanicaly compensate by using 50 um shims below the rotor (available as DS40-R-00 kit). Verify proper rotor mounting with the Encoder Explorer tools "Signal analyzer" or "Mechanical installation verification."
Note: for more information please read paragraph 6

4. Unpacking
4.1 Standard order The package of the standard DS-40 contains the encoder with 250mm shildedd cable AWG30.
Optional accessories: (1) DS-40-R-00 Kit , Rotor mounting shims : x10
stainless steel 50um thick rotor mounting shims.
(2) MA-DS40-004 Kit, end of stepped shaft installation kit (3 screw M2x4, washer).
(3) MA-DS40-004 Kit , end of smooth shaft installation kit (3 screw M2x4, spring, C-ring).
(4) EAPK008 Kit, encoder mounting screws (3 screws M2x6).
(5) CNV-0003 RS-422 to USB converter (with USB internal 5V power supply path).
(6) NanoMIC-KIT-01, RS-422 to USB converter with full digital interface for both NCP & high speed SSI/Biss and AqB (with USB internal 5V power supply path).
(7) DKIT-DS-40-SF, Mounted SSi encoder on rotary jig, RS-422 to USB converter and cables.
(8) DKIT-DS-40-IF, Mounted BiSS encoder on rotary jig, RS-422 to USB converter and cables.

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5. Electrical interconnection
This chapter reviews the steps required to electrically connect the encoder with digital interface (SSi or BiSS-C).
Connecting the encoder The encoder has two operational modes: 5.1 Absolute position over SSi or BiSS-C: This is the power-up default mode

Electric EncoderTM

CLK / NCP RX [+] CLK / NCP RX [-]

(gray) (blue)

Host System
5V

DATA / NCP TX [-] (yellow)

DATA / NCP TX [+] (green) 120

Gnd

(black)

(red)

SSi / BiSS interface wires color code

Clock + Clock Data Data + GND +5V

Grey Blue Yellow Green Black Red

Clock
Data Ground Power supply

5.2 Setup mode over NCP (Netzer Communication Protocol)
This service mode provides access via USB to a PC running Netzer Encoder Explorer application (on MS Windows 7/10). Communication is via Netzer Communication Protocol (NCP) over RS-422 using the same set of wires.
Use the following pin assignment to connect the encoder to a 9-pin D-type connector to the RS-422/USB converter CNV-0003 or the NanoMIC.

Electric encoder interface, D Type 9 pin Female

Description

Color Function Pin No

SSi Clock / NCP Gray Clock / RX + 2

Blue Clock / RX - 1

Yellow Data / TX -

SSi Data / NCP TX Green Data / TX + 3

Ground

Black GND

Power supply

Red +5V

5.3 Electrical connection and grounding The encoder does NOT come with specified cable and connector, however, do observe grounding consideration:
[1] The cable shield does not connect to the power supply return line.
[2] Ground the host shaft to avoid interference from the host system, which could result in encoder internal noise.
Note: 4.75 to 5.25 VDC power supply required

USB
Blue Box or

Setup

Electric Encoder

6. Software installation
The Electric Encoder Explorer (EEE) software: · Verifies Mechanical Mounting Correctness · Offsets Calibration · Sets up general and signal analysis
This chapter reviews the steps associated with installing the EEE software application.
6.1 Minimum requirements · Operating system: MS windows 7/ 10,
(32 / 64 bit)
· Memory: 4MB minimum
· Communication ports: USB 2
· Windows .NET Framework, V4 minimum
6.2 Installing the software · Run the Electric EncoderTM Explorer file
found on Netzer website: Encoder Explorer Software Tools · After the installation you will see Electric Encoder Explorer software icon on the computer desktop. · Click on the Electric Encoder Explorer software icon to start.

USB
NanoMIC

Setup SSI / BiSS

Electric Encoder

Connect Netzer encoder to the converter, connect the converter to the computer and run the Electric Encoder Explorer Software Tool

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7. Mounting verification
7.1 Starting the Encoder Explorer Make sure to complete the following tasks successfully: · Mechanical Mounting · Electrical Connection · Connecting Encoder for Calibration · Encoder Explore Software Installation Run the Electric Encoder Explorer tool (EEE) Ensure proper communication with the encoder: (Setup mode by defoult). (a) The status bar indicates successful
communication. (b) Encoder data displays in the encoder data
area. (CAT No., Serial No.) (c) The position dial display responds to shaft
rotation.
c

7.2 Mechanical installation verification The Mechanical Installation Verification provides a procedure that will ensure proper mechanical mounting by collecting raw data of the fine and coarse channels during rotation. (d) Select [Mechanical Mounting Verification]
on the main screen.
d
(e) Select [Start] to initiate the data collection. (f) Rotate the shaft in order to collect the fine
and coarse channels data.

(g) At the end of a successful verification, the SW will show "Correct Mechanical Installation."
(h) If the SW indicates "Incorrect Mechanical Installation," correct the mechanical position of the rotor, as presented in paragraph 3.3 - "Rotor Relative Position."

8. Calibration
New feature
Auto-Calibration option enabled. Refer to document: Auto-calibrationfeature-user-manual-V01
8.1 Offset calibration For optimal performance of the Electric Encoders, the inevitable DC offset of the sine and cosine signals must be compensated over the operational sector. After successfully completing the Mounting Verification procedure: (a) Select [Calibration] on the main screen.
a

b
a
Perform mounting verification & rotation direction selection before calibration to ensure optimal performance. It is also reccomended to observe the instaletion at the [Tools - Signal Analizer] window.

DS-40-UM-V04

ABSOLUTE POSITION ROTARY ELECTRIC ENCODERTM

(b) Start the data acquisition while rotating the shaft.
The progress bar (c) indicates the collection progress.
Rotate the axis consistently during data collection-covering the working sector of the application end to end-by default the procedure collects 500 points over 75 seconds. Rotation speed is not a parameter during data collection. Data collection indication shows for the fine/coarse channels, a clear "thin" circle appears in the center (d) (e) with some offset.

Offset compensated fine / Corse channel

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8.2 CAA calibration The following calibration aligns the coarse/ fine channel by collecting data from each point of both channels.
Select [Continue to CAA Calibration]
In the CAA angle calibration window, select the relevant option button from the measurement range options (a): · Full mechanical rotation shaft movement
is over contentious - recommended. · Limited section define operation of the
shaft in a limited angle defined by degrees in case of <10deg · Free sampling modes - define the number of calibration points in the total number of points in the text box. The system displays the recommended number of points by default. Collect a minimum of nine points over the working sector. · Click the [Start Calibration] button (b) · The status (c) indicates the next required operation; the shaft movement status; the current position, and the next target position to which the encoder should be rotated. · Rotate the shaft/encoder to the next position and click the [Continue] button (c) - the shaft should be in STAND STILL during the data collection. Follow the indication/ interactions during the cyclic process for positioning the shaft --> stand still --> reading calculation. · Repeat the above step for all defined points. Finish (d) · Click the [Save and Continue] button (e). The last step saves the offsets CAA parameters, completing the calibration process.
Contents Preface | ESD Protection | Product Overview | Unpacking | Electrical interconnection 6
Software Installation | Mounting Verification | Calibration | Operational Mode | Mechanical Drawings

ABSOLUTE POSITION ROTARY ELECTRIC ENCODERTM

HARSH ENVIRONMENT

DS-40

USER MANUAL

8.3 Setting the encoder zero point The zero position can be defined anywhere in the working sector. Rotate the shaft to the desired zero mechanical position.
Go into "Calibration" button at the top menu bar, press "Set UZP".
Select "Set Current Position" as zero by using the relevant option, and click [Finish].

8.4 Jitter test
Perform a jitter test to evaluate the quality of the installation; the jitter test presents the reading statistics of absolute position readings (counts) over time. Common jitter should be up +/- 3 counts; higher jitter may indicate system noise.

In case the reading data (blue dots) are not evenly distributed on a thin circle, you may experience "noise" in your installation (check shaft/stator grounding).

9. Operational Mode
9.1 SSi / BiSS Operational mode indication of the SSi / BiSS Encoder interface available by using the NanoMIC.
For more information read about NanoMIC on Netzer website
The operational mode presents the "real" SSi / BiSS interface with 1MHz clock rate.
Protocol SSi

Protocol BiSS

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10. Mechanical drawings
0.05 A 0.02 A 0.05

H8 +0.039 35 0
0 10 h8 -0.022
A

Coplanar with B 0.02 B 0.05

+0 -0.05

PART NUMBER

DESCRIPTION

DS-40-QR Assembly

DS-40-QR Encoder

Star washer, DIN 6798A, M2

MP-03491

Hex socket screw, DIN 912, M2

TORQUE INCLUDED QTY

Optional

0.2 Nm

Flat washer, DIN 9021, M4 - ID 4.3

End-shaft

5 MA-DS40-004 Star washer, DIN 6798A, M4

installation kit, 1

optional

Hex socket low cap screw, DIN 7984, M4x6 0.3 Nm

+0.50 0.50 0

6 5 4 3 2
A 1

12 max.

2 min.

Typical mounting requirements

End-shaft with shoulder mounting - example

+0.30

10 0 maximum height (ref) 7.70 cable exit height 5.50 ears height

PART NUMBER

DESCRIPTION

DS-40-QR Assembly

DS-40-QR Encoder

TORQUE INCLUDED QTY.

1.50 mounting surface

Star washer, DIN 6798A, M2

MP-03491

3 Optional

Profile view

for both stator and rotor

Hex socket screw, DIN 912, M2 0.2 Nm

0 lower point

CS056-L1-S17 Wave spring

Midshaft

MA-DS40-002

installation kit,

DS-37 retaining ring

optional

9.40 ±0.08

49 boundary

4.50

40 Bottom view

3 x 2.2 THRU ALL 4.6 2
for M2 screws with DIN 6798A star washers
H8 +0.022 10 0
0 35 -0.03 mounting diameter, three places

10.41 ±0.08

0.50

1 D

42°

8 max.

12 max.

Midshaft with hollow shaft - example

Top view

42 PCD for mounting screws

Unless Otherwise Specified

Dimensions are in: mm Surface finish: N6

Linear tolerances

0.5-4.9: ±0.05 mm

5-30: ±0.1 mm

31-120: ±0.15 mm

121-400: ±0.2 mm

WARNING
Do not use Loctite or other glues containing Cyanoacrylate. We recommend to use 3M glue - Scotch-WeldTM Epoxy Adhesive EC-2216 B/A.

DS-40-UM-V04

References

Encoder Maintenance Guide: Best Practices for Longevity

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