YOKOGAWA ProSafe-RS Manual

Technical
Information ProSafe-RS/ProSafe-RS Lite
Explosion Protection
TI 32S01J30-01E
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

i
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.
All Rights Reserved Copyright © 2006, Yokogawa Electric Corporation Dec. 3, 2021-00

ii
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

iv
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

v
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

Toc-2
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