YOKOGAWA UT520 User manual

User’s
Manual
IM 05D01C02-41E
Models UT550/UT520
Digital Indicating Controllers
User’s Manual for
Single-loop Control
IM 05D01C02-41E
3rd Edition

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Introduction
Thank you for purchasing the UT550/UT520 digital indicating controller.
■How to Use the Manuals
Purpose Manual Title Description
Setup Describes the tasks (installation, wiring, and others) required
to make the controller ready for operations.
Basic operation Describes examples of setting PV input types, control output
types, and alarm types. Making settings described herein
allows you to carry out basic control.
Brief operation Contains the parameter map used as a guideline for setting
parameters.
Function description
and setpoint recording Briefly describes the functions of parameters. In addition, each parameter table has a User Setting column, where you
can record your setpoints when setting them in the controller.
Operating
procedures
and troubleshooting
1. Installation
2. Initial Settings
5.1 Parameter Map
5.2 Lists of
Parameters
3. Operations
4.1 Troubleshooting Describes key operation sequences. For operation control
through external contact inputs, See "1.5 Terminal Wiring
Diagrams"
■Controllers Applicable to Single-loop Control
The specification codes of the UT550/UT520 applicable to single-loop control are given in
the table below.
UT550-00
UT550-01
UT550-02
UT550-03
UT550-04
UT550-10
UT550-11
UT550-12
UT550-13
UT550-14
UT520-00
UT520-07
UT520-08
UT550-20
UT550-21
UT550-22
UT550-23
UT550-24
UT550-30
UT550-31
UT550-32
UT550-33
UT550-34
UT550-40
UT550-41
UT550-42
UT550-43
UT550-44
■Regarding This User’s Manual
(1) This manual should be provided to the end user. Keep an extra copy or copies of the
manual in a safe place.
(2) Read this manual carefully to gain a thorough understanding of how to operate this
product before starting operation.
(3) This manual describes the functions of this product. Yokogawa Electric Corporation
(hereinafter simply referred to as Yokogawa) does not guarantee the application of
these functions for any particular purpose.
(4) Under absolutely no circumstances may the contents of this manual, in part or in
whole, be transcribed or copied without permission.
(5) The contents of this manual are subject to change without prior notice.
(6) Every effort has been made to ensure that the details of this manual are accurate.
However, should any errors be found or important information be omitted, please
contact your nearest Yokogawa representative or our sales office.
Media No. IM 05D01C02-41E (CD) 3rd Edition : May 2006 (YK)
All Rights Reserved Copyright © 2000, Yokogawa Electric Corporation

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■Safety Precautions
The following symbol is indicated on the controller to ensure safe use.
CAUTION
This symbol on the controller indicates that the operator must refer to an explanation in the
user’s manual in order to avoid the risk of injury or death of personnel or damage to the
instrument. The manual describes how the operator should exercise special care to avoid
electric shock or other dangers that may result in injury or loss of life.
The following symbols are used in the hardcopy user’s manuals and in the user’s manual
supplied on the CD-ROM.
NOTE
Indicates that operating the hardware or software in a particular manner may damage it or
result in a system failure.
IMPORTANT
Draws attention to information that is essential for understanding the operation and/or
features of the controller.
■Force Majeure
(1) 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.
(2) No portion of the software supplied by Yokogawa may be transferred, exchanged,
leased or sublet for use by any third party without the prior permission of Yokogawa.
(3) Be sure to use the spare parts approved by Yokogawa when replacing parts or
consumables.
(4) Use this software with one specified computer only. You must purchase another copy
of the software for use on each additional computer.
(5) Copying this software for purposes other than backup is strictly prohibited.
(6) Store the floppy disk(s) (original medium or media) containing this software in a
secure place.

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IM 05D01C02-41E 3rd Edition: May 31, 2006-00
■Regarding Protection, Safety, and Prohibition Against Unauthorized
Modification
(1) 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 guaran-
tee safety if products are not handled according to these instructions.
(2) Modification of the product is strictly prohibited.
(3) Reverse engineering such as the disassembly or decompilation of software is strictly
prohibited.

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CONTENTS
Models UT550/UT520
Digital Indicating Controllers
User’s Manual for Single-loop Control
IM 05D01C02-41E 3rd Edition
Introduction........................................................................................................... i
1. Installation .............................................................................................. 1-1
1.1 Model and Suffix Codes.................................................................................. 1-1
1.2 How to Install................................................................................................... 1-2
1.3 How to Connect Wires .................................................................................... 1-5
1.4 Hardware Specifications ................................................................................ 1-7
1.5 Terminal Wiring Diagrams ............................................................................ 1-13
2. Initial Settings ........................................................................................ 2-1
2.1 Names and Functions of Front Panel Parts................................................... 2-2
2.2 Setting PV Input Type (Setting First at Power-on) ......................................... 2-3
2.3 Changing PV Input Type ................................................................................. 2-7
2.4 Setting Control Output Type (except for a Position Proportional Controller) ... 2-9
2.5 Calibrating Valve Position (for a Position Proportional Controller Only) ...2-11
2.6 Initializing Parameters .................................................................................. 2-13
2.7 Changing Alarm Type ................................................................................... 2-14
2.8 Description of Multiple Setpoints and PID................................................... 2-17
3. Operations .............................................................................................. 3-1
3.1 Monitoring-purpose Operating Displays ....................................................... 3-1
Available during Operation ............................................................................ 3-1
3.2 Setting Target Setpoint (SP) ........................................................................... 3-3
3.3 Performing/Canceling Auto-tuning ................................................................ 3-3
3.4 Setting PID Manually....................................................................................... 3-5
3.5 Setting Alarm Setpoints.................................................................................. 3-6
3.6 Selecting Target Setpoint Numbers (SPN) .................................................... 3-7
3.7 Switching between Run and Stop .................................................................. 3-8
3.8 Switching between AUTO and MAN ............................................................... 3-8
3.9 Manipulating Control Output during Manual Operation ............................... 3-9
3.10 Switching between Remote (REM) and Local (LCL) ....................................3-11

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4. Troubleshooting and Maintenance ........................................................ 4-1
4.1 Troubleshooting .............................................................................................. 4-1
4.2 Maintenance .................................................................................................... 4-6
4.2.1 Cleaning ........................................................................................... 4-6
4.2.2 Replacing Brackets ........................................................................... 4-6
4.2.3 Attaching Terminal Cover .................................................................. 4-6
4.2.4 Replacing Parts with a Limited Service Life ....................................... 4-8
4.2.5 Replacing Control Output Relays ...................................................... 4-8
5. Parameters.............................................................................................. 5-1
5.1 Parameter Map ................................................................................................ 5-1
5.2 Lists of Parameters ......................................................................................... 5-6
6. Function Block Diagram and Descriptions............................................ 6-1
Revision Information ............................................................................................ i

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IM 05D01C02-41E 3rd Edition: May 31, 2006-00
1. Installation
This chapter describes installation, wiring, and other tasks required to make the
controller ready for operation.
1.1 Model and Suffix Codes
Before using the controller, check that the model and suffix codes match your order.
Model Suffix Code Description
UT550
Digital indicating controller (provided with retransmission output and 15 VDC loop power supply as standard)
-0 Standard type
-1 Position proportional type
-2 Heating/cooling type
-3 Standard type (with 24 V DC loop power supply)
Type
-4 Position proportional type (with 24 V DC loop power supply)
0
1
2
3
Optional functions
4
Model Suffix Code Description
UT520
Digital indicating controller (provided with retransmission output and 15 VDC loop power supply as standard)
Type -0 Standard type
0 None
7 With communication, auxiliary analog (remote) input, and 2 additional DIs
Optional functions
8 With auxiliary analog (remote) input and 2 additional DIs
None
With communication, auxiliary analog (remote) input, 6 additional DIs and 4 additional DOs
With communication, auxiliary analog (remote) input, and 1 additional DI
With 5 additional DIs and 4 additional DOs
With auxiliary analog (remote) input and 1 additional DI
Check that the following items are provided:
•Digital indicating controller (of ordered model): ........................................... 1
•Brackets (mounting hardware): .................................................................. 1 pair
•Unit label:................................................................................................... 1
•User’s Manuals for Single-loop Control: ..................................................... 5 (A2 size)
•User’s Manual (Reference) (CD-ROM Version): ......................................... 1
■Correspondence between the Model and Suffix Codes, and the Contact
Input/Output Terminals Provided
Check the model ordered and the presence/absence of contact inputs and outputs in the
following table.
✓indicate that the contacts are available.
Contact input terminals Contact output terminals
Model and Suffix
Codes DI1 DI2 DI3 DI4 DI5 DI6 DI7 DO1 DO2 DO3 DO4
UT550- 1
UT550- 0
UT550- 2
UT550- 3
UT550- 4
DI8 DO5 DO6 DO7
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
Note: For details on the functions of contact inputs/outputs, see “1.5 Terminal Wiring Diagrams”.
✓indicate that the contacts are available.

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Contact input terminals Contact output terminals
Model and Suffix
Codes DI1 DI2 DI3 DI4 DI5 DI6 DI7 DO1 DO2 DO3 DO4
UT520-07
UT520-00
UT520-08
DI8 DO5 DO6 DO7
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
Note: For details on the functions of contact inputs/outputs, see “1.5 Terminal Wiring Diagrams”.
1.2 How to Install
NOTE
To install the controller, select a location where:
(1) no one may accidentally touch the terminals,
(2) mechanical vibrations are minimal,
(3) corrosive gas is minimal,
(4) temperature can be maintained at about 23°C
and the fluctuation is minimal,
(5) no direct radiant heat is present,
(6) no magnetic disturbances are caused,
(7) no wind blows against the terminal board (reference junction compensation element),
(8) no water is splashed,
(9) no flammable materials are around,
Never place the controller directly on flammable items or equipment.
If the controller has to be installed close to flammable items or equipment, be sure to
provide shielding panels all around the controller, at least 150mm away from every side;
the panels should be made of either 1.43mm-thick metal-plated steel plates or 1.6mm-thick
uncoated steel plates.
●Installation Position
Install the controller at an angle within 30°from horizontal with the front panel facing up-
ward. Do not install it facing downward. The position of right and left sides should be hori-
zontal.
Front panel
of controller Must not
exceed 30
30Rear of
controller
150mm150mm
150mm
150mm