SIGMA TEK SI 021 User manual

SI 021
S-DIAS SSI Interface Module
Instruction Manual
Date of creation: 16.06.2014
Version date: 26.07.2023
Article number: 20-022-021-E

Publisher: SIGMATEK GmbH & Co KG
A-5112 Lamprechtshausen
Tel.: [phone]
Fax: [phone]
Email: [e-mail]
WWW.SIGMATEK-AUTOMATION.COM
Copyright © 2014
SIGMATEK GmbH & Co KG
Translation of the Original Instructions
All rights reserved. No part of this work may be reproduced, edited using an electronic system, duplicated or
distributed in any form (print, photocopy, microfilm or in any other process) without the express permission.
We reserve the right to make changes in the content without notice. The SIGMATEK GmbH & Co KG is not
responsible for technical or printing errors in the handbook and assumes no responsibility for damages that occur
through use of this handbook.

S-DIAS SSI INTERFACE MODULE SI 021
26.07.2023 Page 1
S-DIAS SSI Interface Module SI 021
with 2 SSI absolute value encoders
The S-DIAS SSI Interface Module SI 021 can evaluate two absolute value
encoders via the S-DIAS interface.
The SSI interface is designed for SSI encoders (e.g. absolute angle
encoded length measurement rods...). Non-coded and Gray coded (Gray
code is internally converted to binary) sensors are supported.

SI 021 S-DIAS SSI INTERFACE MODULE
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Contents
1Introduction............................................................................. 5
1.1 Target Group/Purpose of this Operating Manual......................5
1.2 Important Reference Documentation .........................................5
1.3 Contents of Delivery.....................................................................5
2Basic Safety Directives .......................................................... 6
2.1 Symbols Used...............................................................................6
2.2 Disclaimer......................................................................................8
2.3 General Safety Directives ............................................................9
2.4 Software/Training .......................................................................10
3Standards and Directives......................................................11
3.1 Directives.....................................................................................11
3.1.1 EU Conformity Declaration................................................................11
4Type Plate...............................................................................12
5Technical Data .......................................................................13
5.1 SSI Absolute Value Encoder Specifications............................13
5.2 Electrical Requirements.............................................................13
5.3 Miscellaneous .............................................................................15
5.4 Environmental Conditions.........................................................15
6Mechanical Dimensions........................................................16
7Connector Layout..................................................................17

S-DIAS SSI INTERFACE MODULE SI 021
26.07.2023 Page 3
7.1 Status LEDs.................................................................................18
7.2 Applicable Connectors...............................................................18
7.3 Label Field...................................................................................19
8Wiring.....................................................................................20
8.1 Wiring Example...........................................................................20
8.2 Note..............................................................................................21
8.3 RS422 Interface...........................................................................21
9Function.................................................................................22
9.1 SSI Absolute Value Encoder Coding........................................22
9.1.1 Binary Mode...................................................................................... 22
9.1.2 Gray Code Decoder Mode................................................................ 22
10 Assembly/Installation ...........................................................23
10.1 Check Contents of Delivery.......................................................23
10.2 Mounting......................................................................................24
11 Addressing.............................................................................26
12 Supported Cycle Times ........................................................28
12.1 Cycle Times below 1 ms (in µs).................................................28
12.2 Cycle Times equal to or higher than 1 ms (in ms)...................28
13 Hardware Class SI021...........................................................29
13.1 General Information....................................................................30
13.2 Channel 1, 2.................................................................................31

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14 Transport/Storage..................................................................32
15 Storage ...................................................................................32
16 Maintenance...........................................................................33
16.1 Service.........................................................................................33
16.2 Repair...........................................................................................33
17 Disposal..................................................................................33

S-DIAS SSI INTERFACE MODULE SI 021
26.07.2023 Page 5
1 Introduction
1.1 Target Group/Purpose of this Operating Manual
This operating manual contains all information required for the operation of the product.
This operating manual is intended for:
•Project planners
•Technicians
•Commissioning engineers
•Machine operators
•Maintenance/test technicians
General knowledge of automation technology is required.
Further help and training information, as well as the appropriate accessories can be found
on our website www.sigmatek-automation.com.
Our support team is happily available to answer your questions.
Please see our website for our hotline number and business hours.
1.2 Important Reference Documentation
This and additional documents can be downloaded from our website or obtained through
support.
1.3 Contents of Delivery
1x SI 021

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2 Basic Safety Directives
2.1 Symbols Used
The following symbols are used in the operator documentation for warning and danger
messages, as well as informational notes:
DANGER
Danger indicates that death or serious injury will occur, if the
specified measures are not taken.
To avoid death or serious injuries, observe all guidelines.
Danger indique une situation dangereuse qui, faute de prendre les
mesures adéquates, entraînera des blessures graves, voire mortelles.
Respectez toutes les consignes pour éviter des blessures
graves, voire mortelles.
WARNING
Warning indicates that death or serious injury can occur, if the
specified measures are not taken.
To avoid death or serious injuries, observe all guidelines.
Avertissement d’une situation dangereuse qui, faute de prendre les
mesures adéquates, entraînera des blessures graves, voire mortelles.
Respectez toutes les consignes pour éviter des blessures
graves, voire mortelles.
CAUTION
Caution indicates that moderate to slight injury can occur, if the
specified measures are not taken.
To avoid moderate to slight injuries, observe all guidelines.
Attention indique une situation dangereuse qui, faute de prendre les
mesures adéquates, peut entraîner des blessures assez graves ou
légères.
Respectez toutes les consignes pour éviter des blessures
graves, voire mortelles.

S-DIAS SSI INTERFACE MODULE SI 021
26.07.2023 Page 7
INFORMATION
Information
Provides important information on the product, handling or
relevant sections of the documentation, which require
attention.

SI 021 S-DIAS SSI INTERFACE MODULE
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2.2 Disclaimer
INFORMATION
The contents of this operating manual were prepared with the greatest
care. However, deviations cannot be ruled out. This operating manual
is regularly checked and required corrections are included in the
subsequent versions. The machine manufacturer is responsible for the
proper assembly, as well as device configuration. The machine
operator is responsible for safe handling, as well as proper operation.
The current operating manual can be found on our website. If
necessary, contact our support.
Subject to technical changes, which improve the performance of the
devices. The following operating manual is purely a product
description. It does not guarantee properties under the warranty.
Please thoroughly read the corresponding documents and this
operating manual before handling a product.
SIGMATEK GmbH & Co KG is not liable for damages caused
through, non-compliance with these instructions or applicable
regulations.

S-DIAS SSI INTERFACE MODULE SI 021
26.07.2023 Page 9
2.3 General Safety Directives
The Safety Directives in the other sections of this operating manual must be observed.
These instructions are visually emphasized by symbols.
INFORMATION
According to EU Directives, the operating manual is a component of a
product.
This operating manual must therefore be accessible in the vicinity of
the machine since it contains important instructions.
This operating manual should be included in the sale, rental or transfer
of the product, or its online availability indicated.
Regarding the requirements for Safety and health connected to the use
of machines, the manufacturer must perform a risk assessment in
accordance with machine directives 2006/42/EG before introducing a
machine to the market.
Operate the unit with devices and accessories approved by
SIGMATEK only.

SI 021 S-DIAS SSI INTERFACE MODULE
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CAUTION
Handle the device with care and do not drop or let fall.
Prevent foreign bodies and fluids from entering the device.
The device must not be opened!
Manipulez l’appareil avec précaution et ne le laissez pas tomber.
Empêchez les corps étrangers et les liquides de pénétrer dans
l’appareil.
L’appareil ne doit pas être ouvert!
If the device does not function as intended or has damage that could
pose a danger, it must be replaced!
En cas de fonctionnement non conforme ou de dommages pouvant
entraîner des risques, l'appareil doit être remplacé!
The module complies with EN 61131-2.
In combination with a facility, the system integrator must comply with
EN 60204-1 standards.
For your own safety and that of others, compliance with the
environmental conditions is essential.
Le module est conforme à la norme EN 61131-2.
En combinaison avec une équipement, l’intégrateur de système doit
respecter la norme EN 60204-1.
Pour votre propre sécurité et celle des autres, le respect des conditions
environnementales est essential.
2.4 Software/Training
The application is created with the software LASAL CLASS 2 and LASAL SCREEN Editor.
Training for the LASAL development environment, with which the product can be
configured, is provided. Information on our training schedule can be found on our website.

S-DIAS SSI INTERFACE MODULE SI 021
26.07.2023 Page 11
3 Standards and Directives
3.1 Directives
The product was constructed in compliance with the following European Union directives
and tested for conformity.
3.1.1 EU Conformity Declaration
EU Declaration of Conformity
The product SI 021 conforms to the following European directives:
•2014/35/EU Low-voltage Directive
•2014/30/EU Electromagnetic Compatibility (EMC Directive)
•2011/65/EU “Restricted use of certain hazardous substances in
electrical and electronic equipment” (RoHS Directive)
The EU Conformity Declarations are provided on the SIGMATEK website.
See Products/Downloads or use the search function and the keyword “EU
Declaration of Conformity”.

SI 021 S-DIAS SSI INTERFACE MODULE
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4 Type Plate
HW: Hardware version
SW: Software version

S-DIAS SSI INTERFACE MODULE SI 021
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5 Technical Data
5.1 SSI Absolute Value Encoder Specifications
Number
2
Encoder
absolute value encoder with RS422 interface
SSI signal level
RS422
inputs: 330 Ω bus termination, per 1.2 kΩ resistor
spread against to 5 volts and mass
outputs: 330 Ω bus termination, without spread
Data transfer speed
125 kHz, 250 kHz, 500 kHz, 1 MHz (configurable)
Encoder resolution
maximum 32 bits
Coding
binary/gray
Status LED
yes
5.2 Electrical Requirements
Voltage supply from the S-DIAS
bus
+24 V
Current consumption on the
S-DIAS bus
(+24 V power supply) without
SSI encoders
typically 28 mA at +18 V
typically 24 mA at +24 V
typically 21 mA at +30 V
maximum 33 mA at +18 V
maximum 28 mA at +24 V
maximum 25 mA at +30 V
Current consumption on the
S-DIAS bus
(+24 V power supply) with two
SSI encoders
typically 33 mA at +18 V
typically 27 mA at +24 V
typically 23 mA at +30 V
maximum 39 mA at +18 V
maximum 32 mA at +24 V
maximum 27 mA at +30 V
INFORMATION
If this S-DIAS module is connected to an S-DIAS supply module with
several S-DIAS modules, the total current of the modules used must be
determined and checked.
The total current of the +24 V supply cannot exceed 1.6 A!
The total current of the +5 V supply cannot exceed 1.6 A!
The specification for the current can be found in the module-specific
documentation under "Electrical Requirements".

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S-DIAS SSI INTERFACE MODULE SI 021
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5.3 Miscellaneous
Article number
20-022-021
Standard
UL 508 (E247993)
Approbations
UL, cUL, CE, UKCA
5.4 Environmental Conditions
Storage temperature
-20 ... +85 °C
Environmental temperature
0 … +60 °C
Humidity
0-95 %, non-condensing
Installation altitude above sea
level
0-2000 m without derating
> 2000 m up to a maximum of 5000 m with derating of the maximum
environmental temperature by 0.5 °C per 100 m
Operating conditions
pollution degree 2
EMC resistance
in accordance with EN 61000-6-2 (industrial area)
EMC noise generation
in accordance with EN 61000-6-4 (industrial area)
Vibration resistance
EN 60068-2-6
3.5 mm from 5-8.4 Hz
1 g from 8.4-150 Hz
Shock resistance
EN 60068-2-27
15 g
Protection type
EN 60529
IP20

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6 Mechanical Dimensions

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7 Connector Layout

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7.1 Status LEDs
Module Status
green
ON
module active
OFF
no supply available
BLINKING (5 Hz)
no communication
User
yellow
ON
can be set from the application
(e.g. the module LED can be set to blinking through the
visualization so that the module is easily found in the control
cabinet)
OFF
BLINKING (2 Hz)
BLINKING (4 Hz)
SSI encoder
status
green
ON
communication with encoder OK
OFF
communication with encoder not OK
7.2 Applicable Connectors
Connectors:
X1-X2: Connectors with spring terminals (included in delivery)
The spring terminals are suitable connecting ultrasonically compacted (ultrasonically
welded) strands.
Connections:
Stripping length/Sleeve length:
10 mm
Plug-in direction:
parallel to conductor axis or to PCB
Conductor cross section, rigid:
0.2-1.5 mm2
Conductor cross section, flexible:
0.2-1.5 mm2
Conductor cross section, ultrasonically compacted:
0.2-1.5 mm2
Conductor cross section AWG/kcmil:
24-16
Conductor cross section flexible, with ferrule without plastic
sleeve:
0.25-1.5 mm2
Conductor cross section flexible, with ferrule with plastic sleeve:
0.25-0.75 mm2 (ground for reducing d2 of the
ferrule)