Lika SMLAX User manual

User's guide
SMLAX
IECEx and ATEX certification category 3
for use in Zone 2, Gas group IIC
Ex mc IIC T4 Gc, Zone 2, Gas group IIC
II 3 G, Ex mc IIC T4 Gc, Zone 2, Gas group IIC
•SMLAX absolute and incremental magnetic encoder
•Absolute resolution: up to 16,384 cpr
•Incremental resolution: 1,024 PPR or custom
•SSI interface / Push-Pull and Line Driver output
Suitable for the following models:
•SMLAX-B0...
•SMLAX-G0...
•SMLAX-B5...
•SMLAX-G5...
•SMLAX-BS...
•SMLAX-GS...
•SMLAX-L...
•SMLAX-Y...
Table of Contents
Preliminary information 6
1 - Safety summary 7
2 - Identification 10
3 - IECEx ULD 19.0002X Certificate of Conformity 11
4 - DEMKO 19 ATEX 2195X Examination Certificate 18
5 – Safety instructions 21
6 - Mounting instructions 23
7 – Electrical connections 29
8 - SSI interface 35
Lika Electronic    •    Tel. +39 0445 806600    •    [email protected]    •    www.lika.biz
Smart encoders & actuators

This document and information contained herein are the property of Lika Electronic s.r.l. and shall not be reproduced in whole or in

part without prior written approval of Lika Electronic s.r.l. Translation, reproduction and total or partial modification (photostat copies,

film and microfilm included and any other means) are forbidden without written authorisation of Lika Electronic s.r.l.

The information herein is subject to change without notice and should not be construed as a commitment by Lika Electronic s.r.l. Lika

Electronic s.r.l. reserves the right to make all modifications at any moments and without forewarning.

This manual is periodically reviewed and revised. As required we suggest checking if a new or updated edition of this document is

available at Lika Electronic s.r.l.'s website. Lika Electronic s.r.l. assumes no responsibility for any errors or omissions in this document.

Critical evaluation of this manual by the user is welcomed. Your comments assist us in preparation of future documentation, in order

to make it as clear and complete as possible. Please send an e-mail to the following address [email protected] for submitting your

comments, suggestions and criticisms.

General contents
User's guide......................................................................................................................................................... 1
General contents................................................................................................................................................ 3
Typographic and iconographic conventions.................................................................................................5
Preliminary information.................................................................................................................................... 6
- Safety summary....................................................................................................................................... 7
1. Safety.........................................................................................................................................................................................7
2 Electrical safety.......................................................................................................................................................................7
3 Mechanical safety..................................................................................................................................................................8
4 Specific handling and cleaning instructions and safety information against electrostatic charging
...............................................................................................................................................................................................................8
- Identification.......................................................................................................................................... 10
- IECEx ULD 19.0002X Certificate of Conformity..............................................................................11
- DEMKO 19 ATEX 2195X Examination Certificate...........................................................................18
– Safety instructions................................................................................................................................ 21
- Mounting instructions......................................................................................................................... 23
1 Overall dimensions..............................................................................................................................................................23
1.1 SMLAX-B0..., SMLAX-G0..., SMLAX-B5..., SMLAX-G5...................................................................................23
1.2 SMLAX-BS..., SMLAX-GS...........................................................................................................................................24
1.3 SMLAX-L..., SMLAX-Y.................................................................................................................................................24
2 Installing the system..........................................................................................................................................................25
2.1 Mounting the SMLAX-B0..., SMLAX-G0..., SMLAX-B5..., SMLAX-G5... sensor....................................25
2.2 Mounting the SMLAX-L..., SMLAX-Y..., SMLAX-BS..., SMLAX-GS... sensor...........................................26
2.3 Optional mounting tool...........................................................................................................................................28
3 Magnetic ring........................................................................................................................................................................28
– Electrical connections.......................................................................................................................... 29
1 Connection of the absolute encoder..........................................................................................................................29
2 Connection of the incremental encoder...................................................................................................................30
3 T12 cable specifications....................................................................................................................................................30
4 Connection of the shield..................................................................................................................................................30
5 Ground connection............................................................................................................................................................30
6 Absolute resolution and interface...............................................................................................................................31
7 Recommended SSI circuit................................................................................................................................................32
8 Incremental resolution and output circuit...............................................................................................................32
9 AB0, /AB0 output channels.............................................................................................................................................33
10 Reference signal................................................................................................................................................................33
11 Recommended Push-Pull incremental input circuit.........................................................................................34
12 Recommended Line Driver incremental input circuit.......................................................................................34
13 Counting direction...........................................................................................................................................................34
- SSI interface........................................................................................................................................... 35
1 SSI (Synchronous Serial Interface) – General Information...............................................................................35
2 MSB left aligned protocol................................................................................................................................................36
3 Recommended transmission rates...............................................................................................................................37
4 Error bit....................................................................................................................................................................................38
5 Helpful information...........................................................................................................................................................38
- Error and fault diagnostics.................................................................................................................. 39
- Maintenance........................................................................................................................................ 40

11 - Troubleshooting................................................................................................................................... 41

Typographic and iconographic conventions

In this guide, to make it easier to understand and read the text the following typographic and

iconographic conventions are used:

•parameters and objects both of Lika device and interface are coloured in GREEN;

•alarms are coloured in RED;

•states are coloured in FUCSIA.

When scrolling through the text some icons can be found on the side of the page: they are expressly

designed to highlight the parts of the text which are of great interest and significance for the user.

Sometimes they are used to warn against dangers or potential sources of danger arising from the use of

the device. You are advised to follow strictly the instructions given in this guide in order to guarantee

the safety of the user and ensure the performance of the device. In this guide the following symbols are

used:

This icon, followed by the word WARNING, is meant to highlight the parts of the

text where information of great significance for the user can be found: user must

pay the greatest attention to them! Instructions must be followed strictly in order

to guarantee the safety of the user and a correct use of the device. Failure to heed

a warning or comply with instructions could lead to personal injury and/or damage

to the unit or other equipment.

This icon, followed by the word NOTE, is meant to highlight the parts of the text

where important notes needful for a correct and reliable use of the device can be

found. User must pay attention to them! Failure to comply with instructions could

cause the equipment to be set wrongly: hence a faulty and improper working of

the device could be the consequence.

This icon is meant to highlight the parts of the text where suggestions useful for

making it easier to set the device and optimize performance and reliability can be

found. Sometimes this symbol is followed by the word EXAMPLE when instructions

for setting parameters are accompanied by examples to clarify the explanation.

Preliminary information

This guide is designed to provide the most complete and exhaustive information the operator needs to

correctly and safely install and operate the SMLAX reading head. The SMLAX reading head must be

paired with an MRx series magnetic ring. For information on MRx series magnetic rings please refer to

the specific documentation.

SMLAX is a bearingless encoder for position and speed feedback on applications with large rotating shaft

in potentially explosive atmospheres.

SMLAX rotary encoder is available with an SSI absolute interface, with an incremental output, and with a

dual output (absolute + incremental). An absolute sensor, an incremental sensor, and a reference sensor

can be installed in the same package. Thus the magnetic ring can be equipped with two or three tracks

according to model.

The absolute measuring system can have a 12-, 13-, and 14-bit resolution (4,096 cpr, 8,192 cpr, 16,384

cpr) over the complete circumference and provides the absolute position through the SSI interface.

The incremental resolution can be 1,024 PPR (order codes -B0..., -G0..., -B5..., -G5) or custom (order codes

-L..., -Y...); square wave signals are provided via Push-Pull and Line Driver output circuits.

Specific models also include a reference mark information once per revolution (order codes -B0..., -G0...,

-B5..., -G5, -L...; -Y...).

It is mandatory to pair each sensor with its own MRx series segmented magnetic ring.

SMLAX rotary encoder is IECEx and ATEX certified. For complete information

and certificates please refer to the sections “3 - IECEx ULD 19.0002X

Certificate of Conformity”, “4 - DEMKO 19 ATEX 2195X Examination

Certificate”, and “5 – Safety instructions”.

To make it easier to read and understand the text, this guide can be divided into two main sections.

In the first section some general information concerning the safety, the mechanical installation, and the

electrical connection as well as tips for setting up and running properly and efficiently the unit are

provided.

In the second section, entitled SSI interface, both general and specific information is given on the SSI

interface.

SMLAX • IECEx and ATEX certified

1 - Safety summary

1.1. Safety

•Always adhere to the professional safety and accident prevention

regulations applicable to your country during device installation and

operation;

•installation and maintenance operations have to be carried out by

qualified personnel only, with power supply disconnected and stationary

mechanical parts;

•device must be used only for the purpose appropriate to its design: use for

purposes other than those for which it has been designed could result in

serious personal and/or the environment damage;

•high current, voltage and moving mechanical parts can cause serious or

fatal injury;

•failure to comply with these precautions or with specific warnings

elsewhere in this manual violates safety standards of design, manufacture,

and intended use of the equipment;

•Lika Electronic assumes no liability for the customer's failure to comply

with these requirements.

1.2 Electrical safety

•Turn OFF power supply before connecting the device;

•connect the unit according to the explanation in the ”7 – Electrical

connections” section on page 29;

•in classified areas the electrical connection of the device must be carried

out in compliance with the methods indicated in the EN 60079-0 directive

and according to the EN 60079-14 directive;

•before using provide a safe ground connection (GND) using the ground

screw on the housing of the SMLAX sensor;

•before using provide a safe ground connection (GND) to the magnetic

ring;

•always comply with the power supply voltage level as per the order code

and the data sheet;

•current absorbed per each channel must not exceed 20 mA;

•comply with the range of permissible environmental temperature -10°C

+85°C (+14°F +185°F);

•in compliance with 2014/30/EU norm on electromagnetic

compatibility, following precautions must be taken:

- before handling and installing the equipment, discharge

electrical charge from your body and tools which may come in touch

with the device;

- power supply must be stabilized without noise; install EMC filters on

device power supply if needed;

- always use shielded cables (twisted pair cables whenever possible);

- avoid cables runs longer than necessary;

- avoid running the signal cable near high voltage power cables;

- mount the device as far as possible from any capacitive or inductive

noise source; shield the device from noise source if needed;

MAN SMLAX IECEx_ATEX E 1.0.odt 1 - Safety summary 7 of 44

SMLAX • IECEx and ATEX certified

- to guarantee a correct working of the device, avoid using strong magnets

on or near by the unit;

- it is mandatory to connect the sensor enclosure to ground. Make sure

that ground is not affected by noise. Use the ground point provided in

the sensor enclosure. Use one TCEI M3 x 6 UNI5931 cylindrical head

screw with 2 tooth lock washers DIN 6798-A;

- ensure that the ring is connected to ground. Minimize noise by

connecting the drive shaft to ground; the ring must be installed as

described in the guide, ensure that it is in electrical contact with the

drive shaft;

•do not stretch the cable; do not pull or carry by cable; do not use the cable

as a handle.

1.3 Mechanical safety

•Install the device following strictly the information in the “6 - Mounting

instructions” section on page 23;

•mechanical installation has to be carried out with stationary mechanical

parts;

•do not disassemble the unit;

•do not tool or drill the unit, do not tamper with the unit;

•do not loosen the screws which fasten the enclosure;

•delicate electronic equipment: handle with care;

•do not subject the device to knocks or shocks;

•protect the unit against acid solutions or chemicals that may damage it;

•respect the environmental characteristics of the product, use the product

according to the indicated degree of IP protection;

•we suggest installing the unit providing protection means against waste,

especially swarf as turnings, chips, or filings; should this not be possible,

please make sure that adequate cleaning measures (as for instance

brushes, scrapers, jets of compressed air, etc.) are in place in order to

prevent the sensor and the magnetic ring from jamming.

1.4 Specific handling and cleaning instructions and safety information

against electrostatic charging

Please be sure to strictly observe the following safety precautions and

instructions before handling and installing the modular encoder.

MAN SMLAX IECEx_ATEX E 1.0.odt 1 - Safety summary 8 of 44

SMLAX • IECEx and ATEX certified

•Open the box and handle the electronic components only within an EPA

(Electrostatic Protective Area) and when you are properly grounded;

•before handling the modular encoder the operator must wear:

- a wrist strap; it must be worn on the hand and connected to

ground through a 1 megohm resistor;

- an ESD smock made of dissipative material;

- dissipative gloves;

•access to the equipment must be limited or prevented in order to avoid

charging or discharging electrostatic charges;

•in order to prevent the accumulation of electrostatic charges while

cleaning the equipment, the unit (and especially the magnetic tape of

the ring and any other non metallic part that is exposed) must be

cleaned only with a damp cloth or a cloth soaked in a damp solution;

compressed air cannot be used. Any rubbing with non-conductive

materials must be strictly avoided;

•any other step intended to avoid electrostatic charging and/or

discharging must be taken in compliance with all local provisions and

national regulations as well as the relevant safety regulations and in

particular the EN 60079-0 directive and the EN 60079-14 directive.

CAUTION

Keep magnets away from the ring, it could be damaged by strong magnetic

fields.

MAN SMLAX IECEx_ATEX E 1.0.odt 1 - Safety summary 9 of 44

SMLAX • IECEx and ATEX certified

2 - Identification

Device can be identified through the order code and the serial number printed

on the label applied to its body. Information is listed in the delivery document

too. Please always quote the order code and the serial number when reaching

Lika Electronic for purchasing spare parts or needing assistance. For any

information on the technical characteristics of the product refer to the

technical datasheet.

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SMLAX • IECEx and ATEX certified

3 - IECEx ULD 19.0002X Certificate of Conformity

MAN SMLAX IECEx_ATEX E 1.0.odt 3 - IECEx ULD 19.0002X Certificate of Conformity 11 of 44

SMLAX • IECEx and ATEX certified

MAN SMLAX IECEx_ATEX E 1.0.odt 3 - IECEx ULD 19.0002X Certificate of Conformity 12 of 44

SMLAX • IECEx and ATEX certified

MAN SMLAX IECEx_ATEX E 1.0.odt 3 - IECEx ULD 19.0002X Certificate of Conformity 13 of 44

SMLAX • IECEx and ATEX certified

MAN SMLAX IECEx_ATEX E 1.0.odt 3 - IECEx ULD 19.0002X Certificate of Conformity 14 of 44

SMLAX • IECEx and ATEX certified

MAN SMLAX IECEx_ATEX E 1.0.odt 3 - IECEx ULD 19.0002X Certificate of Conformity 15 of 44

SMLAX • IECEx and ATEX certified

MAN SMLAX IECEx_ATEX E 1.0.odt 3 - IECEx ULD 19.0002X Certificate of Conformity 16 of 44

SMLAX • IECEx and ATEX certified

MAN SMLAX IECEx_ATEX E 1.0.odt 3 - IECEx ULD 19.0002X Certificate of Conformity 17 of 44

SMLAX • IECEx and ATEX certified

4 - DEMKO 19 ATEX 2195X Examination Certificate

MAN SMLAX IECEx_ATEX E 1.0.odt 4 - DEMKO 19 ATEX 2195X Examination Certificate 18 of 44

SMLAX • IECEx and ATEX certified

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SMLAX • IECEx and ATEX certified

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Lika SMLAX User manual

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