YOKOGAWA N-IO User manual

Technical
Information
Installation Guidance
for N-IO eld enclosure
TI 30A30A10-01EN
TI 30A30A10-01EN
©Copyright Feb. 2018 (YK)
1st Edition Feb. 2018 (YK)
Yokogawa Electric Corporation
2-9-32, Nakacho, Musashino-shi, Tokyo, 180-8750 Japan

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TI 30A30A10-01EN
Introduction
The N-IO eld enclosure is a standardized remote I/O enclosure for outdoor use, which
include N-IO node. There are two types of N-IO eld enclosure, one is for CENTUM VP and
the other is for ProSafe-RS.
This document provides guidance that allows users to consider how to accumulate
the power capacity and install devices at a planning stage of deploying the N-IO eld
enclosures for CENTUM VP and ProSafe-RS.
Chapter 1 System installation requirements
This chapter describes specications covering N-IO eld enclosure installation and
environmental specications, inrush current, power consumption, noise prevention, and
grounding necessary for designing a power supply system.
Chapter 2 Transportation, storage and installation
This chapter describes general cautions for transporting and carrying the N-IO eld enclosure
which is a precision device, precautions for temperature and humidity changes when unpacking
or storing it temporarily, space necessary for maintenance (servicing area), and how to install
devices.
Chapter 3 Cabling
This chapter describes how to connect power, grounding, signal and communication cables to
the installed devices, and how to connect optical ber cables.
Chapter 4 Installation specications
This chapter covers power consumption and power dissipation, in-rush current, circuit protector
and breaker ratings, and parts that need replacement within 10 years. Read this section when
deciding power supply capacity.
Chapter 5 Post-installation inspection and environmental preservation
This chapter describes items that must be checked before applying power and the precautions to
be taken to safeguard the environment after installing the system.
All Rights Reserved Copyright © 2018, Yokogawa Electric Corporation Feb. 26, 2018-00

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Safety Precautions
n Safety, Protection, and Modication of the Product
• In order to protect the system controlled by the product and the product itself and ensure
safe operation, observe the safety precautions described in this Technical Information. 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 this 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 instruction manual to indicate that there
are precautions for safety:
Indicates that caution is required when handling the equipment. This symbol is labeled
on the Product to indicate the possibility of dangers such as electric shock on personnel
and equipment, and also indicate 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 signal word
“WARNING” or “CAUTION” 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. Ensure to ground the protective conductor
terminal to avoid electric shock before using the product.
Identies a functional grounding terminal. A term “FG” is also used. This terminal is
equipped with the same function and used for purposes other than the protective
grounding. Before using the product, ground the terminal.
Indicates an AC supply.
Indicates a DC supply.
Indicates that the main switch is ON
Indicates that the main switch is OFF
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n Symbol Marks of Installation Guidance
Throughout this Technical Information, you will nd several di󰀨erent types of symbols are used to
identify di󰀨erent sections of text. This section describes these icons.
WARNING
Identies important information required to understand operations or functions.
CAUTION
Identies instructions that must be observed in order to avoid physical injury and electric
shock or death to the operator.
IMPORTANT
Identies important information required to understand operations or functions.
TIP
Identies additional information.
SEE
ALSO
Identies a source to be referred to.
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n Cautions for Safely Applying the Device
l Wiring Power Cable
WARNING
Connect the power cables according to the procedure in this document.
Power cables must conform to the safety standards of the country where the device is installed.
SEE
ALSO
For wiring power cable, refer to 3.2, “Connecting power cable.”
l Earth Wiring
WARNING
This equipment requires a protective grounding dened by the safety standard.
Ground the device following the procedure in this document to prevent from electric shock and to
minimize the noise.
SEE
ALSO
For earth wiring, refer to 3.3, “Connecting grounding cable.”
l 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 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
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l Wiring I/O Cables
CAUTION
Wiring I/O cables must follow the procedure in this document.
SEE
ALSO
For wiring I/O cables, refer to 3.4, “Connecting signal cable.”
l Connecting Devices
IMPORTANT
To ensure this system compliance with the CSA safety standards, all devices connected to this
system shall be CSA certied devices.
l Exchanging Fuse
WARNING
• The fuses for exchange must be the Yokogawa designated fuses.
l Maintenance
CAUTION
• The maintenance work for the devices described in this manual should be performed only
by the educated experts.
• When the device becomes dusty, use a vacuum cleaner or a soft cloth to clean it.
• During maintenance, put up wrist strap, and take other ESD (Electrostatic Discharge)
measures.
• If the existing caution label is dirty and illegible, prepare a new label (part number:T9029BX)
to replace it.
SEE
ALSO
For maintenance, refer to 1.4.2, “Countermeasures against static electricity.”
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l Field Power Supply
IMPORTANT
Do not use output voltage potentiometer.
n Drawing Conventions
Some drawings may be partially emphasized, simplied, or omitted, for the convenience of
description.
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TI 30A30A10-01EN Feb. 26, 2018-00
Trademark
n Trademark
• CENTUM, ProSafe, and Vnet/IP are registered trademarks of Yokogawa Electric
Corporation.
• All other company and product names mentioned in this manual are trademarks or
registered trademarks of their respective companies.
• We do not use TM or ® mark to indicate those trademarks or registered trademarks in this
manual.
• We do not use logos and logo marks in this manual.

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Toc-1
TI 30A30A10-01EN
Installation Guidance
for N-IO eld enclosure
Feb. 26, 2018-00
CONTENTS
TI 30A30A10-01EN 1st Edition
1. System installation requirements .......................................................... 1-1
1.1 Installation environment .................................................................................. 1-1
1.2 Power supply system ....................................................................................... 1-5
1.3 Grounding .......................................................................................................... 1-8
1.4 Noise countermeasures .................................................................................1-12
1.4.1 Noise sources and noise countermeasures .................................... 1-12
1.4.2 Countermeasures against static electricity...................................... 1-15
1.5 Cabling requirements ..................................................................................... 1-16
2. Transportation, storage and installation ............................................... 2-1
2.1 Precautions for transportation ........................................................................ 2-1
2.2 Unpacking .......................................................................................................... 2-4
2.3 Storage ............................................................................................................... 2-5
2.4 Servicing area ....................................................................................................2-6
2.5 Installing equipment ......................................................................................... 2-7
3. Cabling....................................................................................................... 3-1
3.1 Connecting cables to the cable entry ............................................................. 3-1
3.2 Connecting power cable .................................................................................. 3-2
3.3 Connecting grounding cable ........................................................................... 3-5
3.3.1 Connecting grounding cable for the enclosure.................................. 3-5
3.3.2 Connecting grounding cable to grounding bar for shield lines .......... 3-6
3.4 Connecting signal cable .................................................................................. 3-7
3.4.1 Connecting signal cable (for CENTUM VP) ...................................... 3-7
3.4.2 Connecting signal cable (for ProSafe-RS)......................................... 3-7
3.4.3 Connecting shield lines of the signal cable........................................ 3-9
3.5 Connecting communication cable ................................................................ 3-10
4. Installation specications ....................................................................... 4-1
5. Post-installation inspection and environmental preservation ............ 5-1

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1. System installation requirements 1-1
TI 30A30A10-01EN
1. System installation requirements
This section describes installation requirements such as environmental conditions,
required space and layout considerations, power consumption, cabling and grounding.
1.1 Installation environment
The system must be installed in an appropriate environment to operate it safely and stably over
a long period of time. This section describes an overview of environmental specications. It is
recommended that the user makes an assessment to see whether the installation environment
requirements are met. For the installation environment assessment, consult with Yokogawa or
the Service of Yokogawa.
n Temperatures and humidity
When equipment is brought from the place out of operational temperature range to the place in
operational temperature range, bring it without a package, keep it within temperature change rate
and avoid condensation. Keep ambient temperature within operational temperature range and
leave it for more than three hours before starting operation.
Under normal operation, the rate of change of ambient temperatures should be within 10 °C/h.
All the equipment should be kept out of the rain and direct sunlight by installing a sun shield or
canopy.
SEE
ALSO
See “Table of equipment installation specications” in this section, for the temperatures and humidity limits for
operating and storing this equipment.
n Condensation
Prevent condensation. If condensation occurs, or its trace is found on the equipment, contact
Yokogawa.
SEE
ALSO
See “Section 2.3 Storage” for more information.
n Magnetic eld
Do not install a magnetic disk, or the like near cables with large current owing or in the magnetic
eld of a power supply. If installed in such locations, the storage medium data may be corrupted
by the magnetic elds.
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1. System installation requirements 1-2
TI 30A30A10-01EN
n Electric eld strength (Electric wave condition)
For stable operation, the system equipment should be used while the doors are closed. The
electric eld strength of the location for the enclosure housing the equipment should be kept
below the following values.
10 V/m or less (80 MHz to 1.0 GHz)
3 V/m or less (1.4 to 2.0 GHz)
1 V/m or less (2.0 to 2.7 GHz)
In case of the usage of wireless equipment such as transceiver nearby this system, note as
following:
• The door of this system should be closed.
• In case of the usage of transceiver with 3 W or less, the distance from this system should be
kept 1 m or more, with 10 W or less, 2 m or more.
• As for the usage of wireless equipment with 1 W or less such as mobile-telephone, PHS,
wireless telephone or LAN equipment, the distance should be kept 1 m or more. Attention
should be paid to the micro wave radiated from mobile-telephone or PHS even out of usage.
n Installation specication
Installation height: Altitude of up to 2000 m
Installation category based on IEC 61010-1 (*1):
Category I
• For YOKOGAWA products, category I applies to the device that receives the electric power
not more than 33 V AC, 70 V DC.
Category II
• For YOKOGAWA products, category II applies to the device that receives the electric power
exceeding 33 V AC or 70 V DC.
Pollution degree based on IEC 61010-1: 2 (Environment inside the enclosure) (*2) (*3)
Indoor/Outdoor use
*1: The installation category, also referred to as an overvoltage category, denes the standard for impulse voltage. The category
number from I to IV applies the devices to determine the clearance required by this standard.
Category I applies to the device intended to be connected to a power supply with impulse voltage reduced to the safe level.
Category II applies to the device intended to be supplied from the building wiring.
*2: Pollution degree indicates the adhesion level of foreign matter in a solid, liquid, or gaseous state that can reduce dielectric
strength. Degree 2 refers to a pollution level equivalent to the general indoor environment.
*3: Do not submerge the enclosure in water.
SEE
ALSO
See “Installation environment specications” at the end of this chapter.
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1. System installation requirements 1-3
TI 30A30A10-01EN
n Measurement categories
Regarding the measurement inputs, the following requirements must be satised to meet the
specications for the device:
The category of the equipment applies to No.1 in the following table.
The rated transient overvoltage is 1500 V.
Note: Do not use the equipment for measurements within measurement categories II, III and IV.
Table Measurement category
No. Applicable standard Description
IEC/EN/CSA 61010-2-030
No. 1 O (Other) For measurements performed on circuits not directly connected to
MAINS.
No. 2 Measurement category II For measurements performed on circuits directly connected to the
low voltage installation.
No. 3 Measurement category III For measurements performed in the building installation.
No. 4 Measurement category IV For measurements performed at the source of the low-voltage
installation.
n Applied standards
SEE
ALSO
For the applicable standards for the N-IO eld enclosure, refer to the following GS.
For CENTUM VP, “N-IO eld enclosure” (GS 33J62R10-01EN)
For ProSafe-RS, “ N-IO eld enclosure” (GS 32P06Q10-01EN)
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1. System installation requirements 1-4
TI 30A30A10-01EN
n Installation environment specications
The following table shows the installation environment specications of the N-IO eld enclosure.
Table Equipment installation specications
Item Specications
Ambient temperature (*1)
Normal operation –40 to 55 ºC (Base unit: –40 to 70 ºC)
In transport/storage –40 to 85 ºC
Ambient humidity Normal operation 5 to 100 %RH (no condensation)
In transport/storage 5 to 95 %RH (no condensation)
Ambient temperature
change rate
Normal operation Within ±10 ºC/h
In transport/storage Within ±20 ºC/h
Power supply
Voltage range 100 to 120 V AC ±10 %
220 to 240 VAC ±10 %
Frequency 50/60 ±3 Hz
Distortion factor 10 % or less
Peak value 128 V or larger (100 V system)
258 V or larger (220 V system)
Instantaneous power
failure 20 ms or lower (when receiving rated AC voltage)
Withstanding voltage
Between power input
terminal and protective
conductor terminal
1500 V AC for 1 minute
Insulation resistance
Between power input
terminal and protective
conductor terminal
20 MΩ/ 500 VDC
Grounding Apply the grounding system which is dened by the rules and
standards of the country or the region.
Shock (*2) Transport shock Horizontal 48 m/s2or less
Noise
Electric eld
10 V/m or less (80 MHz to 1.0 GHz)
3 V/m or less (1.4 to 2.0 GHz)
1 V/m or less (2.0 to 2.7 GHz)
Magnetic eld 30 A/m or less (AC)
400 A/m or less (DC)
Static electricity 4 kV or less (contact discharge)
8 kV or less (aerial discharge)
Altitude 2000 m or less
*1: Avoid direct sunlight. For outdoor installation, protect the enclosure against direct sunlight with a sun shield.
*2: When transporting the enclosure in a truck, use a truck equipped with an air cushion between the truck bed and body. Also, when loading,
load the enclosure horizontally and keep it in a horizontal position.
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1. System installation requirements 1-5
TI 30A30A10-01EN
1.2 Power supply system
To stable system operation, the following conditions should be met:
• Voltage and frequency uctuations are within the limits specied for each system
component.
• Relationship between the waveform’s e󰀨ective values and peak value is within the specied
range.
• High-frequency noise is not at a level that a󰀨ects system operation.
• Use an UPS (uninterruptible power supply) if necessary.
n AC Power specication
AC power used for the system must satised rated voltage and the peak value must be greater
than the minimum specied (see below).
IMPORTANT
If the power unit has high output impedance or high wiring impedance, the resulting voltage drop
attens the input voltage wave, forming a distorted waveform with a low peak value (“B” in the
chart below).
Even if the e󰀨ective value of the distorted input voltage wave is the same as that specied for a
non-distorted input voltage wave, the voltage across the terminals of the smoothing capacitor
in the power circuit may be so low that the system detects power failure. If input voltage waves
A and B shown below, have the same e󰀨ective value of 100 V AC, wave B will have a lower
smoothing capacitor terminal voltage.
Peak A
Peak B
F010201.ai
A: Ideal, non-distorted input voltage wave
B: Distorted input voltage wave
Figure Distorted input voltage waveform
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1. System installation requirements 1-6
TI 30A30A10-01EN
The system operating voltage range is shown below based on the relationship between e󰀨ective
and peak values at the power input terminal of each system. Apply AC power within these ranges
to operate the system.
TIP Average rectied measuring meters such as testers cannot measure e󰀨ective values accurately. Use Yokogawa’s
WT series power meter or an meter, which enables e󰀨ective values, peak values, and waveform distortion to be
measured with one unit.
120
125 127
90
100
110
120
132
130 140 150 160 170 187
Peak value (V op)
V
V
Effective
value
(V rms)
Effective
value
(V rms)
System operating
voltage range
F010202.ai
274
200
198
220
240
264
280 310 340 370
374
Peak value (V op)
V
V
180
System operating
voltage range
V op= 2 V rms V op= 2 V rms
Figure System operating voltage range
n Selecting a power system
N-IO eld enclosure system requires a power supply that satises power requirements in
accordance with EMC regulations. For selection of the power supply unit, consult with a power
unit manufacturer taking the following points into consideration.
lSource output capacity
Take the following items into consideration when consulting with a power unit manufacturer to
determine the output capacity.
Power consumption: Both volt-ampere and watt data should be studied
(refer to Chapter 4).
Device in-rush current: See Chapter 4 Table “System equipment power-on
In-Rush current” The method of turning on the power
should also be studied.
Backup ready time after failure: Time period required to backup the devices when power
fails.
Reserve capacity: An extra power capacity should be determined as
reserve to meet any device additions.
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1. System installation requirements 1-7
TI 30A30A10-01EN
lIn-Rush current
When the equipment is turned on, a large in-rush current ows as the capacitor is
instantaneously charged and the transformer is excited. When any equipment is turned on, this
should not cause any voltage uctuation that could adversely a󰀨ect other equipment. Do not turn
on all equipment at the same time. Start equipment one by one.
Power may be switched to backup or AC line power if in-rush current activates the overload
protection circuit on power-up. After such an overload, select an uninterruptible power unit, with
automatic-recovery.
n Cabling
Observe the following when cabling the power unit to the system equipment:
• Protect signal cables from induced noise.
• Protect signal cables from induced noise from high-voltage power lines.
• Separate the system power supply from other equipment power supplies using a power
distribution board.
• Provide a dedicated breaker for each power supply.
• Label the breakers with the name of the connected equipment.
• Install the breakers where they can be easily operated.
• The breaker, must not interrupt connection by wiring to protective grounding system.
• Install power supply cables and high-voltage power lines in metallic conduits as much as
possible.
• Use shielded cables if metallic conduits cannot be provided.
June 30, 2016-00

1. System installation requirements 1-8
TI 30A30A10-01EN
1.3 Grounding
To avoid electric shocks and minimize the inuences of external noise, the installed devices must
be grounded to the protective grounding system which complies with the safety standards, the
electrical installations standard, and the power distribution system of the country or the region.
As for the protective grounding systems, the meshed grounding systems described in IEC 60364,
IEC 62305 and IEC 61000-5-2 can be applied. A protective device is to be installed in compliance
with the rules and regulations, in order to prevent electric shocks caused by a ground fault.
n Grounding of enclosure
Connect the protective conductor terminal outside N-IO eld enclosure to the protective
grounding system. Apply the grounding system which is dened by the rules and standards of the
country or the region.
SEE
ALSO
See “Section 3.3.1 Connecting grounding cable for the enclosure”, for the cables and terminals.
F010301.ai
Protective conductor terminal
Protective grounding system
Figure Grounding of enclosure
June 30, 2016-00