YOKOGAWA ProSafe-RS Manual

Technical

Information ProSafe-RS/ProSafe-RS Lite

Explosion Protection

TI 32S01J30-01E

©Copyright July 2006 (YK)

31st Edition Nov. 10, 2022 (YK)

Yokogawa Electric Corporation

2-9-32, Nakacho, Musashino-shi, Tokyo, 180-8750 Japan

TI 32S01J30-01E

Introduction

This book describes explosion protection compliance of ProSafe-RS/ProSafe-RS Lite. The

engineering practice of explosion protection is regulated in each country, and in principle,

construction technique including wiring should be done in accordance with the safety standards.

When you build and explosion protection system for a real job, select products so as to comply

with the standards of the country in which it is used, and check for construction technique

beforehand.

Furthermore, this document contains the details of the NFM014-A13, NIE009-A101, and

NFM037-A101 certicates that are included in the product documentation.

Please refer to CENTUM Explosion Protection (TI 33Q01J30-01E) for a general explanation of

the explosion protections.

TI 32S01J30-01E

Safety Precautions

Safety, Protection, and Modication of the Product

• In order to protect the system controlled by the product and the product itself and to ensure

safe operation, observe the safety precautions described in the Technical Information (this

book and Installation Guidance ) and the User’s Manuals. We assume no liability for safety if

users fail to observe these instructions when operating the product.

• If this product is used in a manner not specied in the Technical Information, the protection

provided by this product may be impaired.

• If any protection or safety circuit is required for the system controlled by the product or for

the product itself, prepare it separately.

• Be sure to use the spare parts approved by Yokogawa Electric Corporation (hereafter

simply referred to as YOKOGAWA) when replacing parts or consumables.

• Do not use the accessories (Power supply cord set, etc.) that came with the product for any

other products.

• Modication of the product is strictly prohibited.

• The following symbols are used in the product and this book to indicate there are safety

precautions:

Indicates that caution is required. This symbol for the Product indicates the possibility

of dangers such as electric shock on personnel and equipment, and also indicates

that the user must refer to the User’s Manuals for necessary actions. In the

User’s Manuals, this symbol is used together with a word “CAUTION” or “WARNING”

at the locations where precautions for avoiding dangers are described.

Indicates that caution is required for hot surface. Note that the devices with this symbol

become hot. The risk of burn injury or some damages exists if the devices are touched or

contacted.

Identies a protective conductor terminal. Before using the Product, you must ground the

protective conductor terminal to avoid electric shock.

Identies a functional grounding terminal. A terminal marked “FG” also has the same

function. This terminal is used for grounding other than protective grounding. Before

using the Product, you must ground this terminal.

Indicates anAC supply.

Indicates a DC supply.

Indicates that a component such as a power supply switch is turned ON.

Indicates that a component such as a power supply switch is turned OFF.

Dec. 3, 2021-00

iii

TI 32S01J30-01E

Symbols in this Book

This book has the following symbols.

WARNING

Indicates precautions to avoid a danger that may lead to death or severe injury.

CAUTION

Indicates precautions to avoid a danger that may lead to minor or moderate injury or

property damage.

IMPORTANT

Identies important information required to understand the operations or functions.

TIP

Identies additional information.

SEE

ALSO

Identies a source to be referred to.

Oct. 25, 2016-00

TI 32S01J30-01E

 Considerations for Using This Product in Safety

Power Supply Wiring

WARNING

The connection of power cables and the selection of power cables must be done in accordance

with this book and the Installation Guidance, and implement so as to comply with the standards

and laws about explosion protection in the country or the area where the cables are laid.

Ground Wiring

WARNING

You should implement so as to comply with the standards and laws about explosion protection in

the country or the area where the cables are laid.

Input/Output Wiring

CAUTION

• The connection of input and output should be done in accordance with this book and the

Installation Guidance, and implement so as to comply with the standards and laws about

explosion protection in the country or the area where the cables are laid.

• Wiring material and device which is electrically connected to this equipment should be

products that complied with standards and laws about explosion protection in the country or

the area where the cables are laid.

 Tightening Torque of Screws

IMPORTANT

The tightening torque that the Product recommends is showed in the following table. However,

if the tightening torque of the screw is specied in the User’s Manuals, follow the instructions

described in the User’s Manuals.

Table Table of Recommended Tightening Torque

Nominal diameter of a screw M2.6 M3 M3.5 M4 M5 M6 M8 M10

Recommended tightening torque

(N•m) 0.35 0.6 0.8 1.2 2.8 3.0 12.0 24.0

Dec. 3, 2021-00

TI 32S01J30-01E

Replacement of fuse

WARNING

• The specied fuse must be used as a replacement.

• Before replacing fuse, conrm if there’s no dangerous gas, and the power supply is OFF.

Maintenance

WARNING

• The maintenance work should be done only by operators who received special training.

• Use a vacuum cleaner and soft cloth to clean up the equipment.

• At the time of the maintenance work, put on wrist straps and take the measures for

Electrostatic Discharge.

• If the label that indicates Danger is not legible, or if it has peeled o󰀨, order a new label using

part number T9029BX.

• Before starting the maintenance work, conrm if there’s no dangerous gas.

• The maintenance work should be done in accordance with the instructions provided in the

related Installation Guidance and User’s Manuals.

Drawing Conventions

Some drawings depicted in the user’s manual may be partially emphasized, simplied, or omitted

for the convenience of description.

Trademark

Trademark Acknowledgments

The names of corporations, organizations, products and logos herein are either registered

trademarks or trademarks of Yokogawa Electric Corporation and their respective holders.

Mar. 27, 2020-00

Toc-1

TI 32S01J30-01E

Explosion Protection

Nov. 10, 2022-00

CONTENTS

TI 32S01J30-01E 31st Edition

Introduction ..............................................................................................................i

Safety Precautions..................................................................................................ii

Trademark ................................................................................................................v

1. Explosion Protection Instrumentation....................................................1-1

1.1 Explosion Protection Standards.....................................................................1-1

1.2 Explosion Protection Construction................................................................1-2

1.3 Overview of Connection to the Devices Installed in a Hazardous Area .....1-4

2. Explosion Protection Instrumentation in Zone 2/Division 2 ............... 2-1

2.1 Non-Incendive...................................................................................................2-1

2.2 Ex “ec”, Type “n” ............................................................................................2-11

3. Intrinsic Safety Explosion Protection Instrumentation ....................... 3-1

3.1 Intrinsic Safety Explosion Protection Instrumentation Using Barrier base

plates..................................................................................................................3-2

3.1.1 Intrinsic Safety Explosion Protection ofATEX/UKEX Standard........3-2

3.1.2 Intrinsic Safety Explosion Protection of IEC Standard ......................3-3

3.1.3 Intrinsic Safety Explosion Protection of US (FM) Standard...............3-4

3.1.4 Intrinsic Safety Explosion Protection of Canada (FM) Standard.......3-5

3.1.5 Intrinsic Safety Explosion Protection of EAC Ex................................3-6

3.1.6 Intrinsic Safety Explosion Protection of KCs .....................................3-7

3.2 Intrinsic Safety Explosion Protection Instrumentation Using Barriers......3-8

Appendix 1. US (FM) NI/Canada (FM) NI/IECEx Ex “ec” /

ECAS-EX Ex “ec” ..............................................................App.1-1

Appendix 1.1 US (FM) NI/Canada (FM) NI/IECEx Ex “ec”/ECAS-EX Ex “ec”

Control Drawing of SCU (SSC50/SSC57/SSC60/L1SC70)

and FIO Node Unit...........................................................................App.1-1

Appendix 1.2 US (FM) NI/Canada (FM) NI/IECEx Ex “ec”/ECAS-EX Ex “ec”

Control Drawing of SCU (S2SC70) and N-IO Node Unit........App.1-23

Appendix 1.3 US (FM) NI/Canada (FM) NI/IECEx Ex “ec” Control Drawing of

N-IO eld enclosure......................................................................App.1-41

Appendix 1.4 US (FM) NI/Canada (FM) NI Control Drawing of S2BN5D .........App.1-48

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TI 32S01J30-01E

Appendix 2. ATEX Ex “ec”/ATEX Type “n” / UKEX Ex “ec” /

UKEX Type “n” ...................................................................App.2-1

Appendix 2.1 ATEX Ex “ec” / UKEX Ex “ec” Instruction of SCU

(SSC50/SSC57/SSC60/L1SC70) and FIO Node Unit.......App.2-1

Appendix 2.2 ATEX Ex “ec” / UKEX Ex “ec” Instruction of SCU (S2SC70)

and N-IO Node Unit.........................................................................App.2-7

Appendix 2.3 ATEX Ex “ec” / UKEX Ex “ec” Instruction of N-IO

eld enclosure.................................................................................App.2-11

Appendix 2.4 ATEX Type “n” / UKEX Type “n” Information of S2BN4D.........App.2-13

Appendix 2.5 ATEX Ex “ec”/ UKEX Ex “ec” Information of S2BN5D .............App.2-14

Appendix 3. IECEx Ex “ec”/ IECEx Type “n” of S2BN4D / S2BN5D ...App.3-1

Appendix 3.1 IECEx Type “n” Information of S2BN4D.......................................App.3-1

Appendix 3.2 IECEx Ex “ec”/ Intrinsic Safety/ ECAS-Ex Ex “ec” Information

of S2BN5D .......................................................................................App.3-3

Revision Information...............................................................................................i

Nov. 10, 2022-00

1. Explosion Protection Instrumentation 1-1

TI 32S01J30-01E

1. Explosion Protection Instrumentation

1.1 Explosion Protection Standards

There are various standards for explosion protection in each region. Therefore, when we try to

use equipment in a certain region, it needs to be approved by the explosion protection standards

adopted in the region. ProSafe-RS/ProSafe-RS Lite, a global product, has been certied

according to the standards adopted in NorthAmerica and Europe.

The table below lists the explosion protection standards that ProSafe-RS/ProSafe-RS Lite

complies and their certication authorities. As shown in the table, ProSafe-RS/ProSafe-RS Lite

equipment comply with the FMApproval Standard for Non-Incendive equipment and satisfy the

protectionATEX Ex “ec” orATEXType “n”.Also the ProSafe-RS/ProSafe-RS Lite equipment

have acquired UKEX Ex “ec” or UKEX Type “n”.Therefore they can be installed in Zone 2 or

Division 2 hazardous areas. This chapter mainly describes the explosion protection compliance

of ProSafe-RS/ProSafe-RS Lite equipment.

Table Explosion Protection Standards that ProSafe-RS/ProSafe-RS Lite Complies

Explosion protection

construction

Reference of Explosion-proof specications,

Complied Standard, and Compliant Products

SSSC60

SSC50

SSC57

L1SC70

S2SC70FIO Node

Unit N-IO

Node Unit

N-IO

eld

enclosure S2BN4D S2BN5D

US (FM) Non-Incendive App. 1.1 App. 1.2 App. 1.1 App. 1.2 App. 1.3 –App. 1.4

US (FM) intrinsic safe

explosion protection – – – – – – Chap. 3.1.3

Canada (FM)

Non-Incendive – – App. 1.1 App. 1.2 App. 1.3 –App. 1.4

Canada (FM)

intrinsic safe explosion

protection – – – – – – Chap. 3.1.4

ATEX Ex “ec” (*1) App. 2.1 App. 2.2 App. 2.1 App. 2.2 App. 2.3 –App. 2.5

ATEX Type “n” – – – – – App. 2.4 –

ATEX Type “i” – – – – – – Chap. 3.1.1

IECEx Ex “ec” (*1) –App. 1.2 App. 1.1 App. 1.2 App. 1.3 –App. 3.2

IECEx Type “n” – – – – – App. 3.1 –

IECEx Type “i” – – – – – – Chap. 3.1.2

ECAS-Ex Ex “ec” –App. 1.2 App. 1.1 App. 1.2 – – App. 3.2

UKEX Ex “ec” (*1) App. 2.1 App. 2.2 App. 2.1 App. 2.2 App. 2.3 –App. 2.5

UKEX Type “n” – – – – – App. 2.4 –

UKEX Type “i” – – – – – – Chap. 3.1.1

EAC Ex Type “i” – – – – – – Chap. 3.1.5

KCs Type “i” – – – – – – Chap. 3.1.6

KCs Ex “ec” (*1) – – – – Chap 2.2 – –

CCC-Ex/NEPSI Type “n” – – – – Chap 2.2 – –

–: Non-compliant

Note: Regarding the latest conformity standard, refer to the GS 32P01B60-01EN “Standards Compliant Models”.

*1: The products which use sealed devices have also comply with Type “n”. For detail , refer to Chapter 2.

Nov. 10, 2022-00

1. Explosion Protection Instrumentation 1-2

TI 32S01J30-01E

1.2 Explosion Protection Construction

As described in 1.1, each country has its own standards and rules regarding technical methods

for explosion protection. To install ProSafe-RS/ProSafe-RS Lite in hazardous areas, NI, Ex

“ec”, and Type “n” regulations are adopted as explosion protection construction. The adoption

of NI, Ex “ec”, and Type “n” makes it possible to install ProSafe-RS/ProSafe-RS Lite in Division

2 or Zone 2 that covers most hazardous areas. This widens a more variety of instrumentation.

In addition, it makes it possible to connect to eld devices installed in Division 2 or Zone 2

hazardous area. (There are some restrictions.) With N-IO eld enclosure, NI, and Ex “ec”

are adopted as explosion protection construction for the installation of N-IO eld enclosure

in hazardous areas. The adoption of NI allows N-IO eld enclosure to be installed in Class II

hazardous area (Division 2 or Zone 2). To install ProSafe-RS/ProSafe-RS Lite equipment in a

hazardous area, the nodes and terminal boards as well as I/O modules should comply with the

standards. The gure below shows an example of NI compliant devices. The devices in shading

and the cables shown in heavy line are NI compliant products.

For NI compliant products, seeAppendix 1.

Dec 3, 2021-00

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