YOKOGAWA Yew 80 Series User manual

User’s
Manual
Yokogawa Electric Corporation
IM 01B04K01-02E
11th Edition
Model SKYD (Style S)
Alarm Unit

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Contents
Chapter 1 Introduction
1.1 Inspection............................................................................................................................1-2
1.2 Documentation Conventions ...............................................................................................1-3
1.3 Notice ..................................................................................................................................1-4
1.4 Compatibility with Previous Models.....................................................................................1-5
Chapter 2 General
2.1 Standard Specifications ......................................................................................................2-2
2.2 Model and Suffix Codes ......................................................................................................2-3
2.3 Accessories.........................................................................................................................2-4
Chapter 3 Installation
3.1 External Wiring....................................................................................................................3-2
3.2 Example of Alarm Wiring.....................................................................................................3-3
3.2.1 High-limit and High-high-limit Alarms .....................................................................................3-3
3.2.2 Three-position Alarm ..............................................................................................................3-3
Chapter 4 Principles of Operation
4.1 Principle of Operation..........................................................................................................4-1
4.2 Description of Functions......................................................................................................4-2
4.2.1 SKYD-10x/20x Functions .......................................................................................................4-2
4.2.2 SKYD-30x Functions..............................................................................................................4-5
4.3 Example of Alarm Function Setting .....................................................................................4-6
4.3.1 Condition of Alarm Function...................................................................................................4-6
4.3.2 Parameters of Alarm Function................................................................................................4-6
4.3.3 Operating Condition of Alarm Function ..................................................................................4-6
Chapter 5 Setting
5.1 Names of Components .......................................................................................................5-2
5.2 Setting Jumper ....................................................................................................................5-3
5.2.1 Check of Setting Jumper and its Location..............................................................................5-4
5.3 Setting of Parameters .........................................................................................................5-5
5.3.1 Parameter Change Disable Function .....................................................................................5-5
5.3.2 Setting of Parameters Using Display Setter (SKYD-x04).......................................................5-5
5.3.3 Setting of Parameters Using Handy Terminal ........................................................................5-9
5.4 Parameter List...................................................................................................................5-10
5.4.1 SKYD-10x Parameter List ....................................................................................................5-10
5.4.2 SKYD-20x Parameter List ....................................................................................................5-14
5.4.3 SKYD-30x Parameter List ....................................................................................................5-19
Chapter 6 Maintenance
6.1 Test Equipment ...................................................................................................................6-2
6.2 Check of Input .....................................................................................................................6-3
6.2.1 Check for SKYD-10x and SKYD-20x .....................................................................................6-3
6.2.2 Check for SKYD-30x ..............................................................................................................6-4
6.3 Check of Alarm Set Point ....................................................................................................6-5
6.3.1 Check for SKYD-10x and SKYD-20x .....................................................................................6-5
6.3.2 Check for SKYD-30x ..............................................................................................................6-5
6.4 List of Replaceble Parts ......................................................................................................6-6
Chapter 7 Troubleshooting
7.1 Action in Fault Condition. ....................................................................................................7-2

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Chapter 8 Power Supply Terminal Connections (Option /TB, /A2TB, and /REK)
8.1 External View and Names of Components .........................................................................8-2
8.2 Power Supply and Ground Wiring.......................................................................................8-3
General Specifications
Contents

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Introduction
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Introduction
This manual describes the functions and operations of the SKYD Alarm Unit.
● IntendedReaders
This manual is intended for personnel in charge:
• Installation and wiring
• Instrumentation and setup of the function
• Operation and monitoring of the controller
• Maintenance of equipment
● RelatedDocuments
The following documents all relate to the SKYD Alarm Unit. Read them as necessary.
The codes enclosed in parentheses are the document numbers.
Manual Title Manual No. Description
Rack-Mounted Instruments IM 1B4F2-01E Describes mounting and wiring for the YS80 rack-mounted instruments.
Model JHT200 Handy Terminal IM 77J50H01-01EN Describes operation of JHT200.
Chapter 1 Introduction

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1.1 Inspection
The SKYD alarm unit is shipped only after stringent inspection at the factory. Visually inspect
the product upon delivery to make sure it is not damaged in any way.
Store the box and inner packing material of the package in a safe place / they may be
needed if there is a problem with the product and it needs to be sent back for repair.
Check of Model and Suffix Codes
The model and suffix codes are indicated on the Name plate attached to the front cover of
the instrument. Crosscheck this information with the model and suffix codes of Section 2.2
to ensure that the product is as specified in the order.
F0101.ai
100-120VAC 50/60Hz
ALARM UNIT
SKYD
-204*S
XXXXXXXXX
1-5VDC
60mA
6.0VA
24-110VDC
100-120VAC 50/60Hz
ALARM UNIT
SKYD
-204*S
XXXXXXXXX
1-5VDC
60mA
6.0VA
24-110VDC
Figure 1-1 Name plate for Thermocouple Input (Description example)
Confirmation of the Package Contents
Check the package contents against the list below. If anything is missing or damaged,
immediately contact the sales office from which you purchased the product or your nearest
Yokogawa representative.
• SKYD Alarm Unit ..............................................................................................1
• Alarm Label (Parts No.: L4040JA).....................................................................1
• Precautions on the Use of the YS80 Series ......................................................1
Downloadable Electronic Manuals
You can download the latest manuals from the following website:
http://www.yokogawa.com/ns/ys/

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1.2 Documentation Conventions
This manual uses the following notational conventions
Symbols
The following symbols are used in this manual.
Markings
Indicates that operating the hardware or software in a particular
manner may damage it or result in a system failure.
Draws attention to information that is essential for understanding the
operation and/or features of the product.
Note Gives additional information to complement the present topic and/or
describe terms specific to this document.
Gives reference locations for further information on the topic.
Description of Displays
Some of the representations of product displays shown in this manual may be exaggerated,
simplified, or partially omitted for reasons of convenience when explaining them.
QR Code
The product has a QR Code pasted for efficient plant maintenance work and asset
information management. It enables confirming the specifications of purchased products and
user’s manuals.
For more details, please refer to the following URL.
https://www.yokogawa.com/qr-code
QR Code is a registered trademark of DENSO WAVE INCORPORATED.

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1.3 Notice
This Instruction Manual
• This manual should be passed on to the end user. Keep at least one extra copy of the
manual in a safe place.
• Read this manual carefully to gain a thorough understanding of how to operate this
product before you start using it.
• This manual is intended to describe the functions of this product. Yokogawa Electric
Corporation (hereinafter simply referred to as Yokogawa) does not guarantee that these
functions are suited to the particular purpose of the user.
• Under absolutely no circumstances may the contents of this manual, in part or in whole,
be transcribed or copied without permission.
• The contents of this manual are subject to change without prior notice.
• Every effort has been made to ensure accuracy in the preparation of this manual. Should
any errors or omissions come to your attention however, please contact your nearest
Yokogawa representative or sales office.
Protection, Safety, and Prohibition against Unauthorized Modification
• The following safety symbols are used on the product and in this manual.
Markings
CAUTION
If this symbol is indicated on the product, the operator should refer
to the explanation given in the instruction manual in order to avoid
personal injury or death to either themselves or other personnel, and/
or damage to the instrument. The manual describes that the operator
should exercise special care to avoid shock or other dangers that may
result in injury or loss of life.
Protective ground terminal:
This symbol indicates that the terminal must be connected to ground
prior to operating the equipment.
Function ground terminal:
This symbol indicates that the terminal must be connected to ground
prior to operating the equipment.
AC voltage:
This symbol indicates that AC voltage is present.
DC voltage:
This symbol indicates that DC voltage is present.
• In order to protect the product and the system controlled by it against damage and ensure
its safe use, make certain that all of the instructions and precautions relating to safety
contained in this document are strictly adhered to. Yokogawa does not guarantee safety
if products are not handled according to these instructions.
• If protection/safety circuits are to be used for the product or the system controlled by it,
they should be externally installed on the product.
• Do not turn off the power of the product during adjustment and parameter setting.
• Be sure to confirm the parameters referring to ‘‘5.4 Parameter List’’ before installing the
product in a system or plant. After confirming them, install the product in a system or plant
and turn on the power.
• When you replace the parts or consumables of the product, only use those specified by
Yokogawa.
• If the product is to be used in systems with special requirements for human safety, such
in as nuclear power and radiation related equipment, railway facilities, aircraft facilities,
and medical devices, please consult with your sales representative.
• Do not modify the product.
Force Majeure
• Yokogawa does not make any warranties regarding the product except those mentioned
in the WARRANTY that is provided separately.
• Yokogawa assumes no liability to any party for any loss or damage, direct or indirect,
caused by the use or any unpredictable defect of the product.

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1.4 Compatibility with Previous Models
Compatibility with style A
●Operation and settings differ from previous model (styles A). Please read this document
carefully before operating the product.
●Before installing this product in a system or plant, you must check the jumper settings and
parameters described in chapter 5, “Settings.” After checking settings and parameters,
install the product in the system or plant, and then turn ON the power.
Compatibility with style R
●Operation and settings are the same as for the previous model (style R). Please read this
document carefully before operating the product.
●Before installing this product in a system or plant, you must check the jumper settings and
parameters described in chapter 5, “Settings.” After checking settings and parameters,
install the product in the system or plant, and then turn ON the power.

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General
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General
The Model SKYD Alarm Unit provides two types of alarms : absolute alarm that is output
after comparison of one input signal with one or two alarm set points, and deviation alarm
that is output after comparison of the deviation between two inputs with two alarm set points.
Direct or reverse alarm action can be selected for each of the alarm output set points. The
front panel is provided with an alarm LED indicator lamp for confirming alarm relay action
(when relay is energized).
The JHT200 Handy Terminal (*1) is used for setting the SKYD parameters.
On the SKYD model with display setter (SKYD-x04), input indication (engineering unit) can
be displayed and alarm set points can be displayed / set on the front panel.
*1: The modular jack conversion adapter (E9786WH) is required for connecting the JHT200 Handy
Terminal to the Alarm Unit.
The 5 pin-connector type communication cable (F9182EE) and modular jack conversion adapter
(E9786WH) is required for connecting the BT200 BRAIN Terminal of YOKOGAWA ELECTRIC
Corporation
F0201.ai
Figure 2-1 External View
Chapter 2 General

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2.1 Standard Specifications
Please see the General Specifications (GS 01B04K01-02E) at the end of this manual.

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2.2 Model and Suffix Codes
Model Suffix Codes Optional
Suffix Codes
Description
SKYD Alarm Unit
Alarm -1
-2
-3
1 input, 1 setpoint absolute alarm
1 input, 2 setpoints absolute alarms
2 inputs, 2 setpoints deviation alarms
Su󰀩x Code 0 Always 0
Setting Scale (*1) 0
1
2
4
0 to 100 linear
0 to 10 square root (*2)
-100 to +100 linear (deviation alarm) (*3)
Actual scale (with display setter)
Style Code *S Style S
Option Codes (*4) (*5) /NHR
/FBP
/LOCK
/WSW
/REK
/TB
/A2TB
/A2ER
Without rack case
Power supply fuse bypass
Power supply plug with lock
With spring washer
Mount to same line with EK series rack
With power supply terminal
220V version with power supply terminal
220V version with power supply plug
*1: In the case of two set points, the setting ranges of one set point/two set points are the same.
*2: The value obtained by squaring the setting value functions as the alarm setting value.
*3: 2-input deviation alarm only
*4: /LOCK, /REK, /TB, /A2TB, and /A2ER cannot be specified together.
*5: /FBP, /A2TB, and /A2ER cannot be specified together.

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2.3 Accessories
Alarm Label: 1 sheet

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Installation
For details of the installation procedure and wiring precautions, refer to the instruction
manual “Installation of Rack-Mounted Instruments” (IM 1B4F2-01E).
Chapter 3 Installation

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3.1 External Wiring
(a)All cable ends must be furnished with crimp-on type solderless lugs (for 4mm screws)..
(b)Draw out the internal unit from the rack case.
(c)Connect the cables to the correct terminals referring to Figure 3-1.
(d)Return the internal unit into the rack case after completing the wiring.
(e)Always return the terminal block cover to its original position after completing the wiring.
The terminal block cover cannot be returned to its original position if the internal
unit is not installed its original position in the rack case. Securely return the terminal
block cover because it also functions as lock for the internal unit.
K
J
H
F
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C
B
A
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1
OUT
IN
Terminal arrangement
Figure 3-1 Terminal Layout and Terminal Wiring
Terminal
Designation Description
ANC Alarm output 1
BCOM
C
D
FNC Alarm output 2 (*1)
HCOM
JNO
KNO
Do not connect to the output terminal when the terminal is not
in use.
*1: Except SKYD-1 type.
Terminal
Designation Description
1 + Input 1
2 -
3
4
5 + Input 2 (*2)
6 -
7
8
*2: For SKYD-3 type only.

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3.2 Example of Alarm Wiring
The SKYD alarm unit provides various types or alarms depending on the setting of the alarm
action or the method of connecting the alarm output terminals. Thus, the necessary wiring
should be made with reference to the following two examples:
3.2.1 High-limit and High-high-limit Alarms
Set the direct action (DIRECT) for the alarm actions of both alarms 1 and 2. Then wire the
terminals as illustrated in Figure 3-2.
F0302.ai
SKYD Alarm Unit
H
H
Alarm output terminal
Alarm 2 setting
Alarm 1 setting
Input (deviation)
value
Figure 3-2 External Wiring - Example 1
3.2.2 Three-position Alarm
Set the reverse action (REVERSE) for the alarm action of alarm 1, and the direct action
(DIRECT) for the alarm action of alarm 2. Then wire the terminals as illustrated in Figure 3-3.
F0302.ai
SKYD Alarm Unit
L
Alarm output terminal
Alarm 2 setting
Alarm 1 setting
Input (deviation) value
N
H
Alarm
Figure 3-3 External Wiring - Example 2

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Applicable Cables
(1)Signal circuit wiring
• Cross-sectional area of the cable conductor: 0.5 to 0.75 mm2
• Examples of applicable cables: Single core PVC insulated flexible cable (VSF)
stranded wires (JIS C 3306); heat-resistant vinyl-insulated cable (UL style 1007)
(2)Alarm circuit wiring
• Cross-sectional area of the cable conductor: 0.5 to 1.25 mm2
• Examples of applicable cables: 600 V PVC insulated cable (IV) stranded wires (JIS C
3307); PVC insulated cable for electric appliances (KIV) stranded wires (JIS C 3316);
heat-resistant vinyl-insulated cable (UL style 1007)
(3)Power supply wiring
• Cross-sectional area of the cable conductor: 1.25 to 2.00 mm2
• Examples of applicable cables: 600 V PVC insulated cable (IV) stranded wires (JIS C
3307)
3.2 Example of Alarm Wiring

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Principles of Operation
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4.1 Principle of Operation
Input signals are converted to digital data by the A/D conversion circuit. The resulting digital
data is processed (square root calculation, etc.) by the microcomputer, and the alarm relay
is then energized/de-energized by alarm calculation processing (comparison, etc.).
F0401.ai
SET
N
L
GND
Input
processing
circuit 1
Multiplexer
Input
processing
circuit 2
(*1)
A/D
conversion
circuit Micro-
processor
Relay
output 1
Relay
output2
(*3)
Handy
Terminal
*1: SKYD-30x only
*2: SKYD-x04 only
*3: Except SKYD-10x
Power
supply circuit
Display setter (*2)
Power
supply
1
2
5
6
A
B
J
F
H
K
Figure 4-1 Hardware Function Block Diagram
Chapter 4 Principles of Operation

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4.2 Description of Functions
The following describes the functions of the SKYD-10x/20x and SKYD-30x.
4.2.1 SKYD-10x/20x Functions
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Input signal
Relay output 1 Relay output 2
Alarm detection 2
Alarm relay connection 2
Alarm detection 1
Alarm relay connection 1
Scaling (*1)
Bias (*1)
Squareroot calculation
Normalization
A/D conversion
LINEARIZE1
LOW CUT1
SCH1
SCL1
DP1
INPUT1
PV1
BIAS1
SET POINT1
HYSTERESIS1
ALM1 ACTION
ON DELAY1
OFF DELAY1
RLY1 ACTION
RLY1 TEST
SET POINT2
HYSTERESIS2
ALM2 ACTION
ON DELAY2
OFF DELAY2
RLY2 ACTION
RLY2 TEST
SKYD-20 only
1 to 5 VDC
*1: SKYD- 04 only
Figure 4-2 Software Function Block Diagram
The alphabet codes in the figure are the names of BRAIN communication parameters.