YOKOGAWA YS80 Series User manual

User’s
Manual
IM 01B04K03-02E
Model SDAU (Style R)
Digital Alarm Unit
IM 01B04K03-02E
8th Edition

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IM 01B04K03-02E
8th Edition: Jan.29,2021-00
CONTENTS
1. INTRODUCTION .................................................................................. 1-1
1.1 Inspection .............................................................................................1-2
1.2 Documentation Conventions...............................................................1-3
1.3 Notice ....................................................................................................1-4
1.4 About Compatibility with the Conventional Model (Style E) .............1-6
2. GENERAL............................................................................................. 2-1
2.1 Standard Specifications.......................................................................2-2
2.2 Model and Suffix Codes .............................................................................2-3
2.3 Accessory......................................................................................................2-4
3. INSTALLATION .................................................................................... 3-1
3.1 External Wiring .....................................................................................3-1
4. FUNCTIONS......................................................................................... 4-1
4.1 Operation Principle ..............................................................................4-1
4.1.1 Hardware Block Diagram ...........................................................4-1
4.2 Input Processing Function ..................................................................4-3
4.3 Alarm Processing Function .................................................................4-5
4.3.1 Alarm-Detecting Sections ..........................................................4-6
4.3.2 Alarm Connection / Output Sections ..........................................4-7
4.3.3 Example of Setting the Alarm Functions ..................................4-10
4.4 Retransmission Output Function (for /VLT and /CUR Options) ......4-11
4.5 Communication Function (for /COM Option)....................................4-12
4.6 Function of Recovery from Power Failure ........................................4-13
4.7 Self-Diagnostic Function ...................................................................4-14
4.8 Alarm/Failure Outputs at Power-on and Power Failure....................4-15
5. SETTING............................................................................................... 5-1
5.1 Names of Components.........................................................................5-3
5.2 Part Names of the Display Setter.........................................................5-4
5.3 Setting Jumpers ...................................................................................5-6
5.3.1 Checking Setting Jumpers and their Locations...........................5-7
5.3.2 Change of Setting Jumper .........................................................5-8
5.4 Settings Done from the Front Panel of the Alarm Unit.......................5-9
5.4.1 How to Operate the Key Switches..............................................5-9
5.4.2 Settings Using Key Switches (Example) ..................................5-10
Model SDAU (Style R)
Digital Alarm Unit
IM 01B04K03-02E 8th Edition

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IM 01B04K03-02E
8th Edition: Jan.29,2021-00
5.5 Parameter Change Disable Function.................................................5-11
5.6 Various Display Modes ......................................................................5-12
5.6.1 Display at Power ON ...............................................................5-12
5.6.2 LOCK Display..........................................................................5-12
5.6.3 Display in Display Shutoff Mode ..............................................5-12
5.6.4 Error Display............................................................................5-13
5.6.5 Display of Self-Diagnostic Results ...........................................5-13
5.6.6 Detailed Alarm Status Display ..................................................5-14
5.7 Settings Using the JHT200 Handy Terminal .....................................5-16
5.8 Settings Using a PC (VJ77)................................................................5-17
6. PARAMETERS ..................................................................................... 6-1
6.1 Configuration of Parameters ...............................................................6-1
6.2 Display on Front Panel: Development View of Parameters ...............6-2
6.3 Display on Front Panel: List of Parameters ........................................6-6
6.4 BRAIN Communication: List of Parameters......................................6-22
7. MAINTENANCE ................................................................................... 7-1
7.1 Test Equipments...................................................................................7-1
7.2 Reference Table of Thermocouple and RTD.......................................7-1
7.3 Adjustment and Check.........................................................................7-1
7.3.1 Input Adjustment........................................................................7-2
7.3.2 Correction of Input Wiring Resistance........................................7-4
7.4 Check of Reference Junction Temperature Compensation Action....7-6
7.5 List of Replaceable Parts .....................................................................7-7
8. TROUBLESHOOTING ........................................................................ 8-1
8.1 Actions under Fault Conditions ..........................................................8-2
9. POWER SUPPLY TERMINAL CONNECTINS (Options /TB, /TB/A2
and /REK) ...................................................................................... 9-1
9.1 Names of Components and Power Terminal Symbols.......................9-2
9.2 Power Supply and Ground Wiring ......................................................9-3
General Specifications
Revision Information

<1. INTRODUCTION >
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IM 01B04K03-02E
8th Edition: Jan.29,2021-00
1. INTRODUCTION
This manual describes the functions and operations of the SDAU Digital Alarm
Unit.
Intended Readers
This manual is intended for personnel in charge of:
Installation and wiring
Instrumentation and setup of functions
Operation and monitoring of the controller
Maintenance of equipment
Related Documents
The following documents all relate to the SDAU Digital Alarm Unit. Read them as
necessary. The codes enclosed in parentheses are the document numbers.
•Rack-Mounted Instruments (IM 1B4F2-01E)
Describes mounting and wiring for YS80 rack-mounted instruments.
•Model VJ77 PC-based Parameters Setting Tool (IM 77J01J77-01E)
Describes operation of the VJ77 parameters setting tool.
•Model JHT200 Handy Terminal (IM 77J50H01-01EN)
Describes operation of JHT200.
•YS80*R Rack-Mounted Instruments Communication Functions
Describes the communication functions of SDAU. (IM 01B04F01-20E)

<1. INTRODUCTION >
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8th Edition: Jan.29,2021-00
1.1 Inspection
The SDAU digital 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.
Figure1.1 Appearance and Name plate (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.
•SDAU Digital Alarm Unit................................................................................. 1
•Reference Junction Bracket (Parts No.: L4040EN)
(only for SDAU-120-xx*R/NHR or SDAU-270-xx*R/NHR)............................. 1
•Alarm Label (Parts No.: L4040JA).................................................................. 1 sheet
•Precautions on the Use of the YS80 Series.................................................... 1
Downloadable Electronic Manuals
You can download the latest manuals from the following website:
To view the User’s Manuals, use Adobe Acrobat Reader of Adobe Systems Incorporated.
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.
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.
TIP
Gives additional information to complement the present topic and/or describes terms
specific to this document.
See Also
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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8th Edition: Jan.29,2021-00
1.3 Notice
This User’s 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.
If this symbol is indicated on the product, the operator should refer to the explanation
given in the user’s 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.

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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.
When you replace the parts or consumables of the product, only use those specified
by Yokogawa.
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.

<1. INTRODUCTION >
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8th Edition: Jan.29,2021-00
1.4 About Compatibility with the Conventional
Model (Style E)
The operation and function differ from the conventional model.
Read this manual carefully to gain a thorough understanding of how to operate this
product before you start using it.
Be sure to confirm the parameters such as alarm set point and setting jumper
referring to ''6. PARAMETERS'' 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 replacing an internal unit with the old style code (SDAU-1xx-xx*E) with an
internal unit with the SDAU-120-xx*R or SDAU-270-UN*R style code, the reference
junction contact fitting (for contact with the RJC sensor) must be installed (or
replaced). For more information, see Section 2.3, “Accessory.”