Yokogawa CX2000 User Manual

User’s Manual

Model CX2000/CX2010/CX2020/CX2210/CX2200/CX2410/ CX2420/CX2610/CX2620

DAQSTATION CX2000

Yokogawa Electric Corporation

IM 04L31A01-01E

8th Edition

Thank you for purchasing the CX2000. This manual describes the functions (excluding the communications functions), installation and wiring procedures, operating procedures, and handling precautions of the CX2000. To ensure correct use, please read this manual thoroughly before beginning operation. The following manuals are also provided in addition to this manual. Read them along with this manual.

Electronic Manuals Provided on the Accompanying CD-ROM

Manual Title Manual No. Description

DAQSTATION CX1000/ IM 04L31A01-17E Describes the communications functions of the CX2000 Communications CX1000/CX2000 using the Ethernet/serial interface. Interface User’s Manual

Paper Manuals

Manual Title Manual No. Description

CX2000 Opration Guide IM 04L31A01-02E A guide providing simple explanations of

CX2000 Installation and IM 04L31A01-71E Describes concisely the installation Connection Guide procedures and wiring procedures of the CX2000.

Precautions on the Use of IM 04L31A01-72E Cautions regarding the use of the CX2000. the CX1000/CX2000 The same information is written on pages ii and iii of

CX1000/CX2000 Control of IM 04L31A01-91C Gives a description of pollution control. Pollution Caused by the Product

control-related operations for the CX2000 (including a chart of setting values).

this user’s manual.

DAQSTANDARD Manuals

All manuals other than IM 04L41B01-66EN are contained in the DAQSTANDARD CD.

Manual Title Manual No.

DAQSTANDARD Data Viewer User’s Manual IM 04L41B01-63EN

DAQSTANDARD Hardware Configurator User’s Manual IM 04L41B01-64EN

Installing DAQSTANDARD IM 04L41B01-66EN

Notes

• This manual describes the CX2000, style number “S3.”

• The contents of this manual are subject to change without prior notice as a result of continuing improvements to the instrument’s performance and functions.

• Every effort has been made in the preparation of this manual to ensure the accuracy of its contents. However, should you have any questions or find any errors, please contact your nearest YOKOGAWA dealer.

• Copying or reproducing all or any part of the contents of this manual without the permission of Yokogawa Electric Corporation is strictly prohibited.

• The TCP/IP software of this product and the document concerning the TCP/IP software have been developed/created by YOKOGAWA based on the BSD Networking Software, Release 1 that has been licensed from the Regents of the University of California.

Trademarks

• vigilantplant, DAQSTATION, and Daqstation are registered trademarks of Yokogawa Electric Corporation.

• Microsoft and Windows are registered trademarks or trademarks of Microsoft Corporation in the United States and/or other countries.

• Adobe and Acrobat are registered trademarks or trademarks of Adobe Systems Incorporated.

• Company and product names that appear in this manual are registered trademarks or trademarks of their respective holders.

• The company and product names used in this manual are not accompanied by registered trademark or trademark symbols (® and ™).

Revisions

1st Edition December 2001 5th Edition July 2003 2nd Edition March 2002 6th Edition November 2003 3rd Edition April 2002 7th Edition May 2007

8th Edition : June 2010 (YK)

4th Edition June 2003 8th Edition June 2010

IM 04L31A01-01E

Safety Precautions

About This Manual

• This manual should be read by the end user.

• Read this manual thoroughly and have a clear understanding of the product before operation.

• This manual explains the functions of the product. YOKOGAWA does not guarantee that the product will suit a particular purpose of the user.

• Under absolutely no circumstances may the contents of this manual be transcribed or copied, in part or in whole, without permission.

• The contents of this manual are subject to change without prior notice.

• Every effort has been made in the preparation of this manual to ensure the accuracy of its contents. However, should you have any questions or find any errors or omissions, please contact your nearest YOKOGAWA dealer.

Precautions Related to the Protection, Safety, and Alteration of the Product

• The following safety symbols are used on the product and in this manual.

“Handle with care.” (To avoid injury, death of personnel or damage to the instrument, the operator must refer to the explanation in the manual.)

Functional ground terminal. (Do not use this terminal as a protective ground terminal.)

Protective grounding terminal

Alternating current

• For the protection and safe use of the product and the system controlled by it, be sure to follow the instructions and precautions on safety that are stated in this manual whenever you handle the product. Take special note that if you handle the product in a manner that violate these instructions, the protection functionality of the product may be damaged or impaired. In such cases, YOKOGAWA does not guarantee the quality, performance, function, and safety of the product.

• When installing protection and/or safety circuits such as lightning protection devices and equipment for the product and control system or designing or installing separate protection and/or safety circuits for fool-proof design and fail-safe design of the processes and lines that use the product and the control system, the user should implement these using additional devices and equipment.

• If you are replacing parts or consumable items of the product, make sure to use parts specified by YOKOGAWA.

• This product is not designed or manufactured to be used in critical applications that directly affect or threaten human lives. Such applications include nuclear power equipment, devices using radioactivity, railway facilities, aviation equipment, air navigation facilities, aviation facilities, and medical equipment. If so used, it is the user’s responsibility to include in the system additional equipment and devices that ensure personnel safety.

• Do not modify this product.

• The CX is designed for indoor use.

Direct current

ii IM 04L31A01-01E

Safety Precautions

WARNING

Power Supply

Ensure that the source voltage matches the voltage of the power supply before turning ON the power.

Protective Grounding

Make sure to connect the protective grounding to prevent electric shock before turning ON the power.

Necessity of Protective Grounding

Never cut off the internal or external protective earth wire or disconnect the wiring of the protective earth terminal. Doing so invalidates the protective functions of the instrument and poses a potential shock hazard.

Defect of Protective Grounding

Do not operate the instrument if the protective earth or fuse might be defective. Make sure to check them before operation.

Do Not Operate in an Explosive Atmosphere

Do not operate the instrument in the presence of flammable liquids or vapors. Operation in such environments constitutes a safety hazard.

Do Not Remove Covers

The cover should be removed by YOKOGAWA’s qualified personnel only. Opening the cover is dangerous, because some areas inside the instrument have high voltages.

External Connection

Connect the protective grounding before connecting to the item under measurement or to an external control unit.

Damage to the Protective Structure

Operating the CX2000 in a manner not described in this manual may damage its protective structure.

Exemption from Responsibility

• YOKOGAWA makes no warranties regarding the product except those stated 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 user or any unpredictable defect of the product.

Handling Precautions of the Software

• YOKOGAWA makes no warranties regarding the software accompanying this product except those stated in the WARRANTY that is provided separately.

• Use the software on a single PC.

• You must purchase another copy of the software, if you are to use the software on another PC.

• Copying the software for any purposes other than backup is strictly prohibited.

• Please store the original media containing the software in a safe place.

• Reverse engineering, such as decompiling of the software, is strictly prohibited.

• No portion of the software supplied by YOKOGAWA may be transferred, exchanged, sublet, or leased for use by any third party without prior permission by YOKOGAWA.

IM 04L31A01-01E

iii

Checking the Contents of the Package

Unpack the box and check the contents before operating the instrument. If some of the contents are not correct or missing or if there is physical damage, contact the dealer from which you purchased them.

CX2000

When you open the operation cover on the front panel, a name plate is located on the back side of the cover. Check that the model name and suffix code given on the name plate on the rear panel match those on the order.

Open the operation cover

MODEL and SUFFIX

Model CX2000 CX2010 CX2020 CX2200 CX2210 CX2220 CX2410 CX2420 CX2610 CX2620 External storage medium

Communication interface

Displayed language

Options

Only one can be specified at once.

Cannot be specified when the number of internal control loops is 0.

Applies only to the internal control loops, either one can be specified.

Suffix Code Optional Code

–1 –2 –3 –5

–0 –1 –2

–1

/A6

–2

/A6R /A4F /A4FR

/CST1 /D5 /M1 /N2 /P1 /TPS4 /PG1 /PG2 /BT1

Number of internal control loops: 0, number of inputs for measurement: 0 ch Number of internal control loops: 0, number of inputs for measurement: 10 ch Number of internal control loops: 0, number of inputs for measurement: 20 ch

Number of internal control loops: 2, number of inputs for measurement: 0 ch Number of internal control loops: 2, number of inputs for measurement: 10 ch Number of internal control loops: 2, number of inputs for measurement: 20 ch Number of internal control loops: 4, number of inputs for measurement: 10 ch

Number of internal control loops: 4, number of inputs for measurement: 20 ch

Number of internal control loops: 6, number of inputs for measurement: 10 ch Number of internal control loops: 6, number of inputs for measurement: 20 ch Floppy disk 100MB Zip disk ATA flash memory card (Compact flash and adapter) 250MB Zip disk Ethernet

Ethernet + RS-232 serial interface port

Ethernet + RS-422A/485 serial interface port Japanese

English

6 measurement alarm outputs 6 measurement alarm output, 8 remote inputs 4 measurement alarm outputs, 1 FAIL output, 1 memory end output 4 measurement alarm outputs, 1 FAIL output, 1 memory end output, 8 remote inputs

Control extension DIO (12 DIs, 12 DOs) VGA output Computation function

Three-wire isolated RTD (input for measurement) 24-VDC/AC power supply driven 24-VDC transmitter output (4 loops)

Program control (number of program patterns: 4)

Program control (number of program patterns: 30) Batch header

NO. (Instrument Number)

When contacting the dealer from which you purchased the instrument, please give them the instrument number.

Description

*1*2

WARNING

Do not remove the cover. Repair by trained personnel only.

MODEL SUFFIX

STYLE

iv IM 04L31A01-01E

Standard Accessories

The standard accessories below are supplied with the instrument. Check that all contents are present and that they are undamaged.

Checking the Contents of the Package

No. Name Part Number/Model Q’ty Note

1 Terminal screws 5 M4

2 Mounting bracket B9900BX 2 For panel mounting (Optional codes

3 DAQSTANDARD DXA120 1 Software for setting the CX and

4 CX1000/CX2000 B8700MA 1 CD-ROM containing the PDF files of this

electronic manual manual, the DAQSTATION CX1000/

5 CX2000 Operation IM 04L31A01-02E 1 A guide providing simple explanations of

Guide control-related operations for the CX2000

6 CX2000 Installation and IM 04L31A01-71E 1 Abridged paper manual

Connection Guide

7 Precautions on the Use IM 04L31A01-72E 1 Paper stating the precautions.

of the CX2000 CX1000/CX2000 IM 04L31A01-91C 1 Gives a description of pollution control. Control of Pollution Caused by the Product Installing

8 External storage medium A1053MP 1

DAQSTANDARD

IM 04L41B01-66EN 1 Describes the installation procedures.

A1056MP 1 250 MB Zip disk (provided only when the

B9968NL 1 ATA flash memory card (32 MB CF card +

other than “/H5” and “/H5M”

displaying data. CD-ROM used to install “DAQSTANDARD”

CX2000 Communication Interface User’s Manual, DAQSTANDARD for CX User’s Manual, and other files.

(includes a chart of setting values).

100 MB Zip disk (provided only when the external storage medium suffix code is “-2”)

external storage medium suffix code is “-5”)

adapter, capacity and model of CF card may vary), provided only when the external storage medium suffix code is “-3”

Optional Accessories (Sold Separately)

The following optional accessories are available for purchase separately. When you receive the order, check that all contents are present and that they are undamaged. For information and ordering, contact your nearest YOKOGAWA dealer.

Part Name Part Number/Model Q’ty Note

3.5" floppy disk 7059 00 10 2HD

Zip disk A1053MP 1 100 MB

ATA flash memory card B9968NL 1 32 MB (32 MB CF card + adapter, (CF card + adapter) capacity and model of CF card may vary)

Shunt resistance 4159 20 1 250 Ω±0.1% (for the screw terminal) 4159 21 1 100 Ω±0.1%

Mounting bracket B9900BX 2

Spare Parts

Part Name Part Number/Model Note

Control output module CXA900-01 A spare control output terminal block

Control DIO expansion module

IM 04L31A01-01E

A1056MP 1 250 MB

4159 22 1 10 Ω±0.1%

CXA900-11 A spare control DIO expansion terminal block

How to Use This Manual

Structure of the Manual

This user’s manual consists of the following sections. For details on the communications functions and the software “DAQSTANDARD” provided with the package, see the respective manuals (IM 04L31A01-17E, IM 04L41B01-63EN, and IM 04L41B01-64EN).

Chapter Title and Description

1 Explanation of Functions

Describes in detail the functions of the instrument. The chapters that explain the operation of the CX2000 only describe the operating procedures. For more detailed information about the functions, see this chapter.

2 Installation and Wiring

3 Names of Parts, Display Modes, and Common Operations

4 Control Function Related Setup Operations

5 Program Control Related Setup Operations (Only on Models with the Program

6 Operations during Control Operation

7 Measurement Function Related Setup Operations

8 Operations for Changing the Displayed Contents

9 Data Save/Load Operations

10 Computation and Report Function Related Operations (Only on Models with the

11 Operations of Other Functions

12 Troubleshooting

13 Maintenance

14 Specifications

Appendix Describes the acquisition function of measured data to the internal memory, additional

Index

Describes the installation and wiring procedures of the CX2000.

Describes the names of the parts of the CX2000, the basic key operations, the basic operations carried out initially, and how to use the external storage medium drive.

Describes setup operations related to the control function that are carried out before starting control operations.

Control Option) Describes the setup operations related to program control that are carried out before starting control operations on models with the program control option.

Describes how to switch operation mode during control operation, how to change the setpoints of setting mode, how to tune the control parameters, and the operations on the program control screen (operations only on models with the option).

Describes how to set the PV input of the measurement function and alarms (measurement alarms).

Describes how to change the operating display of both the control function and the measurement function and the display format.

Describes how to write various data to the internal memory, how to save and load from the external storage medium, and the file operations on the external storage medium.

Computation Function Option) Describes how to set and execute operations related to the computation function and report function of the computation function option.

Describes the USER key, key lock, login/logout of key operation, log display, and remote input setting.

Describes the error messages and the troubleshooting measures of the CX2000.

Describes periodic inspection, calibration, and recommended replacement period for worn parts.

Describes the specifications of the CX2000.

information on the computation and report functions, the ASCII file format, and initial settings.

Note

• This user’s manual covers information regarding CX2000s that have a suffix code for

language “-2” (English).

• For details on setting the displayed language, see

vi IM 04L31A01-01E

section 3.6

Conventions Used in This Manual

Unit

K........ Denotes “1024.” Example: 768 KB (file size)

k........ Denotes “1000.”

Safety Markings

The following markings are used in this manual.

How to Use This Manual

Danger. Refer to corresponding location on the instrument.

This symbol appears on dangerous locations on the instrument

which require special instructions for proper handling or use. The

same symbol appears in the corresponding place in the manual to

identify those instructions.

WARNING

CAUTION

Note

Symbols Used on Pages Describing Operating Procedures

On pages that describe the operating procedures in Chapter 3 through 11, the following symbols are used to distinguish the procedures from their explanations.

[]................ Indicates character strings that appear on the screen.

Procedure

Calls attention to actions or conditions that could cause serious

injury or death to the user, and precautions that can be taken to

prevent such occurences.

Calls attentions to actions or conditions that could cause damage to

the instrument or user’s data, and precautions that can be taken to

prevent such occurrences.

Calls attention to information that is important for proper operation

of th instrument.

Example: [Space] soft key, [Volt]

This subsection contains the operating procedure used to carry out

the function described in the current section. All procedures are

written with inexperienced users in mind; experienced users may

not need to carry out all the steps.

Revision History

IM 04L31A01-01E

Setup Items

Edition Addition and Change to Functions

7 Added the contents of IM04L31A01-05E (the user’s manual describing changes to

functions with version 3.02 or later) to the user’s manual, and discarded IM04L31A0105E. Added an I/O terminal diagram. Added example expressions.

8 The DAQSTANDARD is revised.

Describes the details of the settings and the restrictions that exist with

the operating procedure. It does not give a detailed explanation of

the function. For details on the function, see chapter 1.

vii

Safety Precautions .......................................................................................................................... ii

Checking the Contents of the Package ..........................................................................................iv

How to Use This Manual ................................................................................................................vi

Chapter 1 Explanation of Functions

1.1 CX2000 Overview ............................................................................................................ 1-1

1.2 Control Function Overview ............................................................................................... 1-2

1.3 Basic Settings of Control ................................................................................................ 1-16

1.4 PV Input Related Settings .............................................................................................. 1-22

1.5 Contact Input/Output Related Settings .......................................................................... 1-26

1.6 Target Setpoint Related Settings ................................................................................... 1-30

1.7 PID Parameter Settings ................................................................................................. 1-32

1.8 Control Output Suppression Settings ............................................................................. 1-36

1.9 Settings for ON/OFF Control .......................................................................................... 1-38

1.10 Control Alarm Related Settings ...................................................................................... 1-39

1.11 Program Control Related Settings ................................................................................. 1-41

1.12 Tuning ............................................................................................................................ 1-56

1.13 Measurement Function Overview .................................................................................. 1-58

1.14 Measurement Function > Measurement Input Related Settings .................................... 1-60

1.15 Measurement Function > Measurement Alarm Related Settings................................... 1-63

1.16 Display Function ............................................................................................................ 1-68

1.17 Data Storage Function ................................................................................................... 1-89

1.18 Computation and Report Functions (Option) ................................................................. 1-94

1.19 Equations for Control Computation (Style Number S3 or Later) .................................... 1-98

1.20 Other Functions ............................................................................................................. 1-99

Chapter 2 Installation and Wiring

2.1 Handling Precautions ....................................................................................................... 2-1

2.2 Installation ........................................................................................................................ 2-2

2.3 Wiring ............................................................................................................................... 2-5

2.4 Connecting the Power Supply ........................................................................................ 2-21

2.5 Connecting a Monitor to the VGA Output Terminal (/D5 Option) ................................... 2-22

2.6 Transmitter Power Supply Wiring (/TPS4 Option).......................................................... 2-23

Chapter 3 Names of Parts, Display Modes, and Common Operations

3.1 Names and Functions of Sections ................................................................................... 3-1

3.2 Basic Key Operations ...................................................................................................... 3-4

3.3 Setting the Date and Time ............................................................................................. 3-11

3.4 Setting the Brightness of the Display and the Backlight Saver Function ....................... 3-13

3.5 Initializing the Setup Data and Clearing the Internal Memory ........................................ 3-14

3.6 Changing the Displayed Language ................................................................................ 3-15

3.7 Changing the Time Zone................................................................................................ 3-16

3.8 Inserting and Ejecting the External Storage Medium ..................................................... 3-17

Chapter 4 Control Function Related Setup Operations

4.1 Control > Control action, Input setting.............................................................................. 4-1

4.2 Control > DI/DO/SW-registration/AUX (Alarm mode...) ................................................... 4-5

4.3 Control > Output processing .......................................................................................... 4-11

4.4 Control > Relay .............................................................................................................. 4-13

viii IM 04L31A01-01E

Contents

4.5 Control > Tuning setting ................................................................................................. 4-15

4.6 Control input range ........................................................................................................ 4-17

4.7 Control alarm ................................................................................................................. 4-21

4.8 Operation-related parameters/Zone PID ........................................................................ 4-23

4.9 PID parameters .............................................................................................................. 4-25

4.10 Control group setting ...................................................................................................... 4-27

4.11 Ten-segment linearizer I/O ............................................................................................. 4-29

4.12 Control Function Settings ............................................................................................... 4-31

4.13 Hysteresis (Alarm) ......................................................................................................... 4-33

4.14 DIO Operation Monitoring Function Settings (Style Number S3 or Later) ..................... 4-35

4.15 DI/DO Label Settings (Style Number S3 or Later) ......................................................... 4-38

4.16 PV/SP Computation and Analog Retransmission Settings (Style Number S3 or Later) 4-39

4.17 Logic Computation Settings (Style Number S3 or Later) ............................................... 4-43

4.18 Control Constant Settings (Style Number S3 or Later) .................................................. 4-45

4.19 Settings for Switching the Program Patterns Using Contact Inputs with BCD Codes

(Version 3.20 or Later) ................................................................................................... 4-47

Chapter 5 Program Control Related Setup Operations

5.1 Program Control Related Setup Operations .................................................................... 5-1

5.2 Program parameter setting > Pattern initial setting .......................................................... 5-2

5.3 Program parameter setting > Wait action setting ............................................................. 5-4

5.4 Program parameter setting > Pattern start setting ........................................................... 5-5

5.5 Program parameter setting > Program pattern setting..................................................... 5-6

5.6 Program parameter setting > Event setting ..................................................................... 5-8

5.7 Program Pattern Settings > Hysteresis (PV Event) ....................................................... 5-10

5.8 Program parameter setting > Repeat action setting ...................................................... 5-11

5.9 Event Output Settings .................................................................................................... 5-12

5.10 AUX (Auto message, Display position) .......................................................................... 5-14

5.11 AUX (Event Group) Settings (Style Number S3 or Later) .............................................. 5-16

Chapter 6 Operations during Control Operation

6.1 Operations on the Control Group Display (Switching Displayed Information and Control

Operation Modes) ............................................................................................................ 6-1

6.2 Switching Displays on the Overview Display ................................................................... 6-8

6.3 Tuning Operation ............................................................................................................. 6-9

6.4 Operations on the Program Selection Display and Program Control Display (Only on

Models with the Program Control Option) ...................................................................... 6-12

Chapter 7 Measurement Function Related Setup Operations

7.1 Settings Related to Measurement Inputs ......................................................................... 7-1

7.2 Settings Related to Measurement Alarms........................................................................ 7-6

7.3 Setting the Temperature Unit ......................................................................................... 7-11

Chapter 8 Operations for Changing the Displayed Contents

8.1 Using the Information Display (Alarm Summary, Message Summary, Memory Summary,

and Control Summary) ..................................................................................................... 8-1

8.2 Using the Four Screen Display ........................................................................................ 8-2

8.3 Measurement Function > Measurement Group Setup Operation .................................... 8-3

8.4 Measurement Function > Settings Related to Tag Display for Channels ......................... 8-5

8.5 Measurement Function > Operations When Displaying Trend, Digital, and Bar Graph

Displays ........................................................................................................................... 8-7

8.6 Measurement Function > Operations When Displaying the Overview ............................ 8-9

App

IM 04L31A01-01E

Index

Contents

8.7 Measurement Function > Operations When Displaying the Historical Trend ................ 8-10

8.8 Measurement Function > Changing the Display Update Rate of the Trend Display...... 8-11

8.9 Measurement Function > Settings Related to Messages Displayed on the Trend Display

and Write Operation ....................................................................................................... 8-12

8.10 Measurement Function > Changing the Trip Line of the Trend Display ......................... 8-14

8.11 Measurement Function > Changing the Channel Display Color .................................... 8-16

8.12 Measurement Function > Changing the Zone Display of the Trend Display.................. 8-18

8.13 Measurement Function > Setting the Scale Division, Bar Graph Base Position, Scale

Position of Trend Displays ............................................................................................. 8-20

8.14 Measurement Function > Setting the Partial Expanded Display on the Trend Display.. 8-24

8.15 Measurement Function > Setting the Display Direction, Background Color, Waveform Line

Width, Trip Line Width, Grid, and Scroll Time ................................................................ 8-26

Chapter 9 Data Save/Load Operations

9.1 Acquiring Measurement Data to the Internal Memory and Saving Data to the External

Storage Medium ............................................................................................................... 9-1

9.2 Saving Measured/Computed Data at Arbitrary Times (Manual Sample) ......................... 9-7

9.3 Saving and Loading Setup Data ...................................................................................... 9-8

9.4 Loading the Stored Display/Event Data (Historical Trend)............................................. 9-10

9.5 Managing Files and Checking the Free Space on the External Storage Medium ......... 9-11

9.6 Saving the Screen Image Data ...................................................................................... 9-14

9.7 Clearing the Data in the Internal Memory ...................................................................... 9-15

Chapter 10 Computation and Report Function Related Operations

(Only on Models with the Computation Function Option)

10.1 Assigning Computation Channels and Setting Computing Equations, Constants and Tags 10-1

10.2 Starting, Stopping, and Resetting the Computation ....................................................... 10-4

10.3 Setting Computation Channel Alarms ............................................................................ 10-5

10.4 Setting TLOG Computations .......................................................................................... 10-8

10.5 Setting the Rolling Average.......................................................................................... 10-11

10.6 Creating Reports .......................................................................................................... 10-13

10.7 Starting/Stopping the Report Function ......................................................................... 10-15

Chapter 11 Operations of Other Functions

11.1 USER Key Assignment and Operation .......................................................................... 11-1

11.2 Key Lock ........................................................................................................................ 11-3

11.3 Key Operation Login/Logout .......................................................................................... 11-5

11.4 Displaying Logs (Checking Operations) and System Information Display (Checking the

System Specifications) ................................................................................................... 11-8

11.5 Setting the Measurement Remote Input (/A6R option or /A4FR option) ...................... 11-11

11.6 Setting Whether or Not to Use the Batch Header (/BT1 option) ................................. 11-14

11.7 Setting the Batch Information (/BT1 option) ................................................................ 11-15

11.8 Setting the Batch Information (/BT1 option) ................................................................ 11-17

Chapter 12 Troubleshooting

12.1 Messages ....................................................................................................................... 12-1

12.2 Troubleshooting Flow Chart ......................................................................................... 12-11

Chapter 13 Maintenance

13.1 Periodic Inspection ......................................................................................................... 13-1

13.2 Calibration ...................................................................................................................... 13-2

13.3 Replacement of Parts .................................................................................................... 13-4

x IM 04L31A01-01E

Contents

Chapter 14 Specifications

14.1 Input Section Specifications ........................................................................................... 14-1

14.2 Control Function ............................................................................................................. 14-3

14.3 Alarm Function ............................................................................................................... 14-5

14.4 Display Function ............................................................................................................ 14-6

14.5 Storage Function ............................................................................................................ 14-8

14.6 Communication Functions ........................................................................................... 14-11

14.7 Options ......................................................................................................................... 14-13

14.8 General Specifications ................................................................................................. 14-17

14.9 Dimensional Drawings ................................................................................................. 14-21

Appendix

Appendix 1 Supplementary Explanation of the Acquisition of Display Data/Event Data to the

Internal Memory ...........................................................................................................App-1

Appendix 2 Supplementary Explanation of the Computation Function ............................. App-6

Appendix 3 Meaning and Syntax of Equations ................................................................ App-10

Appendix 4 Additional Explanation of the Report Function ............................................. App-16

Appendix 5 Data Format of ASCII Files........................................................................... App-19

Appendix 6 Initial Values .................................................................................................App-23

Appendix 7 Control Functon Blodk Diagram ................................................................... App-40

Appendix 8 Explanation of Engineering Units (EU and EUS) ......................................... App-46

Appendix 9 Program Control Worksheets .......................................................................App-47

Appendix 10 Expression Examples ...................................................................................App-51

Index

IM 04L31A01-01E

App

Index

Chapter 1 Explanation of Functions

1.1 CX2000 Overview

The CX2000 consists of a control function and a measurement function. The control function executes control through PID control and ON/OFF control. The measurement function displays and acquires measured data and control-output data.

Control Function

The CX2000 supports thee control modes: single-loop control, cascade control, and loop control with PV switching or analog Retransmission. It can handle up to six loops of PID control. In addition, the UT Series controllers made by Yokogawa M&C Corporation can be connected and controlled simultaneously as external loops (16 loops max.). You can check the control status on the controller style and faceplate style displays and the hybrid style display that is a mixture of the two styles. Furthermore, the overview display allows monitoring of all control loops including external loops. In addition, the CX2000 provides auto-tuning of PID constants as well as manual tuning, which enables you to adjust the control parameters such as PID constants while checking the control status.

Measurement Function

In addition to the measured data for the control function, the CX2000 can acquire up to 20 channels of measured data. The data can be displayed as waveforms, numeric values, and bar graphs. The measured data along with the control data can be stored to a floppy disk, Zip disk, or ATA flash memory card using the built-in drive.

Conceptual Input/Output Diagram

• Universal control output: for 2 loops Select current, voltage pulse, or relay output.

• Control contact input: 6 inputs

• Control contact input Relay output: 2 outputs Transistor output: 4 outputs

CX2000

LAN (Ethernet)

100 VAC to 240 VAC or 24VDC/AC (P1 option)

Explanation of Functions

PLC

(such as the FA-M3

by YOKOGAWA)

Controls and

switches

Magnet

switch

Measurement alarm output

Measurement alarm output +

IM 04L31A01-01E

Contact

SSR

Magnet switch

(/A6 option)

FAIL/memory end output

(/A4F option)

Contact

input

output

6 inputs

6 outputs

Contact

input

output

6 inputs

6 outputs

Contact

input

output

6 inputs

6 outputs

Select one from the following option terminal blocks.

Control loop section

Up to 6 loops

(select 0, 2, 4, or 6 loops)

Control output terminal block 1 (Loops 1 and 2)

Control output terminal block 2 (Loops 3 and 4)

Control output terminal block 3 (Loops 5 and 6)

Option input/output

section

Measurement alarm output +

remote input/output

Measurement alarm output +

FAIL/memory end output +

remote input/output

(/A6R option)

(/A4FR option)

Ethernet

Power

Supply

Serial interface port

RS-422/485/232

Control input terminal

block 1

Measurement input

section

(10CH/20CH)

Measurement input

terminal block 1

CH1 to CH10

Measurement input

terminal block 2

CH11 to CH20

Control DIO expansion

(/CST1 option)

Four 24-VDC transmitter

power supplies

(/TPS4 option)

Controllers (up to 16 loops)

10 universal measurement inputs

1-1

1.2 Control Function Overview

Control Signal Input/Output

As shown in the following figure, the CX2000 can control up to six loops (up to four or two loops on the 4- or dual-loop models, respectively).

Control PV input

(number of analog inputs: 10)

[Up to 6 loops]

• TC

• RTD etc.

control

Control output

• Relay

• Voltage pulse

• Current

Scanner

Object of

··· ···

• SSR

• Magnet switch etc.

The UT Series controllers made by Yokogawa M&C Corporation can be connected via the serial interface and controlled simultaneously as external loops (16 loops max.) (see

DAQSTATION CX1000/CX2000 Communication Interface User’s Manual

the

Analog Input for Loop Control

PV input and remote setpoint input (RSP) are available as control signal inputs. You can select thermocouple, resistance temperature detector, standard signal, or DC voltage for both PV input and RSP input. The RSP input is used as a terget setpoint (SP). There are 10 input terminals on the control input terminal block (5 input terminals for dual loop). When PV/SP computation is OFF, each input terminal is assigned depending on the number of loops used and the control mode (see

• 6 loops

PV, PV1, PV2: PV input, (RSP): RSP input (not used during program control), : unused terminal

LOOP4

(RSP)

PV1PV2

LOOP6

(RSP)

LOOP3

PV1PV2

• 4 loops

PV, PV1, PV2: PV input, (RSP): RSP input (not used during program control), : unused terminal

LOOP4 LOOP3 LOOP2 LOOP1

213 21 3 2121

(RSP)

(RSP)(RSP)

(RSP)

PVPV

PV1PV1 PV2PV2

• 2 loops

PV, PV1, PV2: PV input, (RSP): RSP input (not used during program control), : unused terminal

LOOP2 LOOP5

21PV1

(RSP)

LOOP2

21321

PV1PV2

(RSP)

(RSP)(RSP)

(RSP)

LOOP1

(RSP)(RSP)

(RSP)

) as shown in the figure below.

LOOP1

PVPV

PV1PV1 PV2PV2

[Control mode setting]

During single-loop control

During cascade control

PV1PV2

During loop control with PV switching

[Control mode setting]

PVPV

During single-loop control

PVPV

During cascade control

PV1PV1 PV2PV2

During loop control with PV switching

[Control mode setting] During single-loop control During cascade control During loop control with

PV switching

When PV/SP is ON, the numbers CI01, CI02, CI03, CI04, CI05, CI06, CI07, CI08, CI09, and CI010 are assigned to each control input terminal starting on the right as you face the terminals, and the PV/SP of each loop is the computed value. You can apply scale conversion, bias, input filter, ten-segment linearizer bias, tensegment linearizer approximation, and square-root computation on the control signal input. For thermocouple inputs, you can set reference junction compensation. In addition, ratio setting can be specified against RSP inputs.

1-2 IM 04L31A01-01E

1.2 Control Function Overview

Control Methods

Control Signal Output

The terminal provides universal output. A single control output terminal block can control two loops (except cascade control which uses two loops for one control). The following types of control output can be selected.

• PID control output

• Time proportional PID Outputs ON/OFF signals with a pulse width that is proportional relay contact output: to the time as relay contact signals according to the computed

PID value.

• Time proportional PID Outputs ON/OFF signals with a pulse width that is proportional to voltage pulse output: the time as voltages according to the computed PID value.

• Current output (continuous Continuously outputs a current (analog signal) that is PID control output): proportional to the computed PID value.

• On/off control relay Outputs on/off control relay contact signals according to the contact output: polarity (positive/negative) of the deviation between the SP

and the PV.

• Analog Retransmission

Outputs the specified computed result, not the computed PID value.

PID control and ON/OFF control are available. The following control modes can be selected for both PID control and ON/OFF control.

Control Mode

In PID control, the following three control modes are available in relation to the PV input selection.

• Single-loop control

Basic control consisting of a single system of controller CPU.

Explanation of Functions

PIDSP

OUT

• Cascade control

Control consisting of two systems of controller CPUs that use the primary control output as the secondary control SP.

PV1

PIDSP

PV2

PID

OUT

• Loop control with PV switching

Single-loop control that is switched between two PV inputs (PV1 and PV2) according to a specified condition.

PV1

PV2

PIDSP

OUT

In PID control, you can also select the PID control mode.

PID Control Mode

Depending on the desired operation at the time the SP is changed, you can select the PID control mode from below. The selections between the PV derivative type and deviation derivative type as well as the presence or absence of the control output bumps are automatically made according to the PID control mode and operation mode (fixedpoint control or program control).

IM 04L31A01-01E

1-3

1.2 Control Function Overview

• Standard PID control

PV derivative type PID (with output bump)

Controlled so that the control output reaches the new SP quickly after the SP is changed.

Deviation derivative type PID (with output bump)

• Fixed-point control

PV derivative type PID (without output bump) PV derivative type PID (with output bump)

Control Parameters

The following control parameters are available. For each group, you can enter up to eight sets of SPs and PID parameters as underlined below. SP, value, relay hysteresis, control action direction, preset output, SP tracking, PV tracking, setpoint limiter, output velocity limiter, auto/manual switching of the over-integration prevention function (anti-reset windup), ON/OFF of the control output suppression function, and SP ramp-rate.

PID Selection Method

The following two methods are available.

• Target setpoint selection method

Rise according to the

setpoint ramp-up

SP1

(No.1 PID)

Switch from SP1 to SP3 Switch from SP3 to SP1 Switch from SP1 to SP2

PV OUT

OUT

Select this mode if you wish to avoid the control OUT from reacting sensitively to the SP change causing a disturbance in the control such as in the case with a continuous fixed-point control.

OUT

PID constant, control output limiter, ON/OFF of the shutdown function, manual reset

A group (up to 8 groups) consisting of a SP and PID parameters is registered to a PID number (SP number). By specifying the SP number using keys on the front panel, external contact input, or via communications, the SP and PID parameters are switched.

SP3

(No.3 PID)

setting

Fall according to the setpoint ramp-down setting

SP1

(No.1 PID)

SPn: Target setpoint number

SP2

(No.2 PID)

Rise according to the setpoint ramp-up setting

Time

1-4 IM 04L31A01-01E

1.2 Control Function Overview

• Zone PID method

The measurement span is divided into a maximum of seven zones using reference points. The optimum PID constant is preassigned to each zone, and the PID constant (in actuality, other control parameters that are registered using the PID number are included) is automatically switched according to the PV. This method is suited for controlling equipment such as reactors in which the chemical reaction gain varies depending on the temperature.

Maximum value of

measurement span

Reference point 6

Reference point 5

Reference point 4

Reference point 3 Reference point 2

Reference point 1

Minimum value of

measurement span

If the current PV is here, PID constant of PID No. 5 is used for control.

Change in the PV.

No.7 PID

No.6 PID

No.5 PID

No.4 PID

No.3 PID

No.2 PID

No.1 PID

Note

• When performing program control operation on models with the program control option,

you will select between segment PID method (zone PID selection OFF) and zone PID

method.

• For a description on auto tuning, which automatically sets the optimum PID constant, see

section 1.12, “Tuning.”

Explanation of Functions

Alarm Output

When the control action status matches the preset status (up to 4 points per loop), the CX2000 can output a relay contact signal from the control output terminal block/DIO expansion terminal block, and output it to the internal switches. Also you can display the alarm occurrence status on the screen. In relay contact output or output to the internal switches, you can select and assign the type of alarm you wish to output at each output terminal of the control output terminal block, the control DIO extension terminal block, or internal switches.

Alarm Type

You can select the alarm type from below. For a detailed explanation on each alarm output, see

section 1.10, “Control Alarm Related Settings.”

PV high-limit alarm, PV low-limit alarm, deviation high-limit alarm, deviation low-limit alarm, deviation high & low limit alarm, deviation within high & low limits alarm, SP highlimit alarm, SP low-limit alarm, output high-limit alarm, and output low-limit alarm.

Alarm Hysteresis

You can set a hysteresis to the setpoints used in the activation and releasing of the alarm.

Example of PV high limit alarm

OFF

Time

Alarm setpoint

Hysteresis

Alarm ON

OFF

IM 04L31A01-01E

1-5

1.2 Control Function Overview

Alarm Standby

You can put the alarm output on standby at the initial stage of control operation until the PV input reaches the SP.

Power up

Normal

handling

Alarm Mode

You can set the condition for disabling the alarm output (such as when the operation is stopped).

FAIL Output/Self Diagnosis Output

In addition to the alarm output described above, the following relay contact signal for failure detection can be output from the control output terminal block.

• FAIL output

Output when a failure is detected in the CX2000 CPU. When a failure is detected, the CX2000 is put in the following condition. Control: Stopped (preset output if in the middle of operation, control output is off or 0% when power is turned ON)

• Self diagnosis output

Output when an input burnout, A/D converter failure, or RJC failure occurs. If an input burnout or A/D converter failure is detected, the control output is set to the preset output value. For RJC, PID control continues as though RJC is 0 °C.

Normal

Alarm is not output during this period even if the PV is below the alarm low limit.

Failure

Alarm output ON

Hysteresis

Alarm low limit value

Time

Control Operation Mode

The following control operation switching is available. The control operation can be switched using keys on the CX2000 control group display (see inputs, or via communications. For a description of the control operation modes on models with the program control option, see “

Program Control

control function block diagram in the explanation below is a simplified one. For a detailed control function block diagram for each control mode, see appendix 7.

Switching between Remote (REM) and Local (LOC)

Select whether control is executed using the SPs set on the CX2000 or using the external analog signal (RSP) as the SP.

PV input RSP input

Local (LOC)

Controller CPU

Control output

Remote

(Analog signal)

RSP

(REM)

OUT

Switching between Auto (AUT), Manual (MAN), and Cascade (CAS)

When set to auto, the control output value (OUT) is computed from the deviation between the PV input and the SP. When set to manual, the control output value (OUT) that is set manually is used rather than the computed control output value (OUT). Switching to “cascade (CAS)” is possible only when the control mode is set to “cascade control.” In cascade control, the primary PID control output is used as the SP of the secondary PID control.

1-6 IM 04L31A01-01E

page 1-12

), using contact

” in the next section. The

1.2 Control Function Overview

Switching between Run (RUN) and Stop (STP)

When the operation is stopped, the control output value (OUT) is set to the preset value.

Single-loop control

Manual operation

Manual (MAN)

Preset output

Stop (STP)

PV input

Controller CPU

Output limiter

Run (RUN)

Control output

Auto (AUT)

OUT

Cascade control

PV input 1

(Cascade primary)

PV1 PV2

Controller CPU 1

Cascade

Manual (MAN)

(Cascade secondary)

SP1

SP2

Auto/ Manual

Controller CPU 2 Manual operation

Output limiter Preset output

Run (RUN)Stop (STP)

Control output

PV input 2

Cascade/ Auto (CAS/AUT)

OUT

Enabling/Disabling Auto-Tuning

In PID control, the optimum PID constant is set automatically when auto-tuning (see

page 1-52

) is performed. Auto-tuning is possible only during auto operation.

Explanation of Functions

Contact Input

Contact input can be used to carry out operations such as running/stopping operation, switching operation modes, changing SPs, switching PV inputs (during loop control with PV switching). For a description on the possible operations, see “Contact Input Information Registration” on

page 1-24

PV/SP Computation (Style Number S3 or Later)

You can use the specified computed result as PV or SP. When PV/SP computation is ON, you can set the control analog input terminals to CI01-CI10, and set the range for each channel. The SP is active when the control operation mode is Remote. You can also use the control output value in the equation. The constants that can be used are separate from the computation function (W01-W36). When a computation error occurs, you can treat the computed result as an overrange or underrange. Computation is performed in synchronization with the control interval.

IM 04L31A01-01E

1-7

1.2 Control Function Overview

Analog Retransmission (Style Number S3 or Later)

Output comes from the control output channels per the results of the specified equation. The computed result is converted to a percentage of the output span (ranging from 0.0% for the lower limit of the output span to 100.0% for the upper limit), and then outputs according to the output format below. The output interval is the same as the control output interval.

• Time proportional relay contact output: Outputs an ON/OFF signal having a pulse

• Time proportional pulse output: Output an ON/OFF signal having a pulse

• Current output: Continuously output a current (analog signal)

Note

• The output value while initialization occurs after turning the power ON or OFF is 0 mA or 0

• The output value while in setup mode or when closing setup mode and switching to

operation mode is 0 mA or 0 V.

• Analog retransmission is handled the same as when control mode is OFF. Control

functions such as upper/lower limit of output value and preset output are not supported.

width proportional to the time as relay contact point signal according to the computed values.

width proportional to the time as voltage according to the computed values.

proportional to the computed PID values.

The following is a block diagram of analog retransmission:

Remote input/control module relay

Measurement input/

computation input

Manual operation

Control input

Analog retransmission computation section

Manual (MAN)

Output data created

Output

Internal switches

Automatic (AUT)

OUT

PV/SP/control output

Communication data

The order of processing for PID computation and analog retransmission is as follows:

Input value, data used

in computation

(newest value)

Previous PV, previous

SP, previous output

value (PID computation)

Previous output value

(analog retransmission

output)

PV, SP output value (PID computation)

Output value (analog

retransmission output)

Processing of all control loops

Processing of all analog retransmission loops

Processing of all loops

Start control task

PID

computation

Analog retransmission

computation

Display/recording/

terminal output

Stop control task

1-8 IM 04L31A01-01E

1.2 Control Function Overview

Data that can be used in the analog retransmission equation are as follows:

• Measured input data, measured computation data, internal/external control data, and communication input data.

• Constants (constants used in measurement computations can not be used)

• Control input data

• Control output module, expansion module DIO, and remote input for measurement

• Internal switches

Computation Error

You can specify the output method when a computation error occurs, such as when an overrange occurs on the computed results of analog retransmission. Over: 105% of span Under: –5% of span

Display/Recording of Analog Retransmission

The output value of analog retransmission is displayed/recorded as the OUT value of the loop specified for analog retransmission. PV and SP are not displayed or recorded.

Internal Switches (Style Number S3 or Later)

Internal switches are software switches that are not output externally, and are used only for internal processing. The switches have the following uses.

• The same output destination as the output relay Control alarm, measurement alarm, measurement computation alarm, time event, PV event, program pattern end signal, logic computation output.

• DIO operation monitoring function

• Use of computation data in the PV/SP computation and the analog retransmission equation

• Assignment of actions to changes in the status of the internal switches

• Reads the operation ON/OFF and internal switch statuses using the communication function.

The status of the internal switches is “nonhold.”

Explanation of Functions

DIO Operation Monitoring Function (Style Number S3 or Later)

Internal Switches and DIO Operation Monitoring Function Since the internal switches are used exclusively for internal processing, the status of the switches cannot be confirmed externally. With the DIO operation monitoring function, you can output the status of the internal switches by assigning a DO to the internal switch. You can output the ON and OFF statuses of the internal switches to separate DOs. Also, you can switch between Auto and Manual operation modes. When in Auto mode, the status of the internal switches is output. When in Manual mode, you can manually switch between DO ON(1) and OFF (0). Internal switch output has priority over alarm output and event output. If the same DO is assigned to an internal switch and an alarm output, alarms cannot be output.

IM 04L31A01-01E

When DO01 is assigned to SW01 When DO003 is assigned to the

Internal switch SW01

AUTO

MAN

DO001

In the above cases, even if D001, DO003, and DO004 are specified for alarm output, the alarm signal is not output. However, FAIL and self diagnosis output take priority over the internal switch status output.

ON signal of SW02, and DO004 is assigned to the OFF signal

Internal switch SW02

AUTO

DO003

MAN

OFF

DO004

1-9

1.2 Control Function Overview

Program Control (Optional Function)

This function is used to ramp-up or ramp-down the SP according to a program pattern. You can set multiple program patterns (up to 4 on the /PG1 option and up to 30 on the PG/2 option) and switch among them according to the operating condition. A program pattern consists of multiple program segments. With style number S3 or later, you can execute a program pattern while a separate program pattern is executing as long as the operating loops do not overlap. There are two methods in selecting the PID constant in program control. One is the “segment PID method” in which the PID constant is switched every segment according to the program pattern setting; the other is the “zone PID method” in which the PID constant is automatically switched according to the PV. The “segment PID method” is used when a different PID constant is required in the same PV region when the temperature is rising and when the temperature is falling.

Segment PID method

1000.0

500.0

0.0 SEG1 SEG2 SEG3 SEG4 SEG5 SEG6 SEG7

The PID constant of PID No. 1 is used in the 5th segment (SEG5).

No.2 PID

No.1 PID No.3 PID

Setting the Operation for Program Control

Settings include the number of repetitions of the program pattern (repeat function), delay function (wait function) for the case when the PV cannot follow up the SP, and alarm output/ event output assignments (contact output can be assigned) according to the program progression.

Operation Mode during Program Control

The following 4 types of operation modes are available.

• Program operation mode Condition in which control is carried out according to the program pattern.

• Hold operation mode Condition in which the change in the SP according to the program pattern is forcibily paused through key operation or other factors.

• Reset mode Condition in which program operation of all loops is stopped. All event outputs are cleared (off).

• Local operation mode If you switch to local operation mode even during program control, fixed-operation is perfomed acording to the SP set locally.

RESET or

Reset mode

PRG RUN

all loop STOP

RUN

PRG RUN

RESET, program end, or all loop STOP

Local operation

mode

PRG

LOC or program LOCAL end

Program operation

mode

Release HOLD

Hold operation mode

HOLD

During program control

Since the remote input cannot be used for the SP during program control, there is no remote/local switching operation.

1-10 IM 04L31A01-01E

1.2 Control Function Overview

Flow of Setup Procedure

Below is a standard flow of setup procedure in executing control for the first time using auto operation.

Set SP

Section 1.9

Set relay hysteresis

Set other control

parameters

Set alarm-related

parameters

Power ON

Basic settings

PID control or

ON/OFF control?

PID controlON/OFF control

Set SP

Set PID parameters

Set alarm-related

parameters

Start a test run

Operating condition

Adjust control

Start actual operation

Basic settings include the following parameters.

Basic settings

Basic control settings

Set in "Control Output Type" of basic control settings

→ Section 1.6

PV input related settings

Contact input/output

related settings

→ Section 1.7

→ Section 1.10

• Auto tuning

• Manual tuning → Section 1.12

• Control output suppression → Section 1.8

• Other adjustments (Parameters that cannot be changed during operation → section 6.1)

Explanation of Functions

→ Section 1.3

→ Section 1.4

→ Section 1.5

When using program control, set the items that include “Program control: On” in “Basic control settings” indicated above. Then, carry out the following settings in addition to “Target setpoint/PID parameter settings.”

Settings for program control

Pattern initial setting

Wait action setting

Pattern start setting

Program pattern setting

Event setting

Repeat action setting

Event output setting

Auto message printing/ program display position setting

→ Section 1.11

Pattern initial setting:

Set the pattern numbers, pattern off/on, number of segments used, segment assignment method, edit segment number, and Loop number.

Wait action setting:

Set wait zone off/on, wait zone settings, and timer.

Pattern start setting:

Set starting target setpoint and start code (operation start condition).

Program pattern setting:

Set segment numbers, ramp/soak, final target setpoint, segment time, ramp-rate-time unit, ramp-rate, segment PID group numbers, operation at the time of segment switching, wait operation type, and wait numbers.

Event setting:

Set event types, loop number/type/setpoint (only when PV event is selected), time event ON/OFF, ON time/OFF time (only when time event is selected) and hysteresis of PV event.

Repeat action setting:

Set the repeat function, number of repetitions, start segment number, and end segment number.

Event output setting:

Set the event type, relay output ON/OFF, and relay output number.

IM 04L31A01-01E

1-11

1.2 Control Function Overview

Switching Displays

Control-related settings are entered in basic setting mode and control setting mode. In addition, settings common to control and measurement are entered in the common and measurement setting mode.

Power ON

Operation mode

Operation display

Display Transition Diagram

[End] soft key -> DISP/ENTER key (This operation saves the settings made in the basic setting mode.)

MENU key

Soft keys

#1 to #9 when program control

is ON.

ESC key

Control setting mode [Setting mode (Control)]

MENU key or ESC key

Setup display (#1 to #8

)

MENU key or ESC key

MENU key

Press the FUNC key for 3 s

Soft keys

Common and measurement setting mode [Set mode]

Press the FUNC

MENU key or ESC key

Setup display (#1 to #8)

key for 3 s

Soft keys

#1 to #9: Basic common and measurement settings #10: Basic control settings

Basic setting mode

ESC key

Setup display (#1 to #10

)

Basic Control Setup Items in Basic Setting Mode

#1 Control action, Input setting

PID number, control period, zone PID, restart mode, restart mode (program) (only on models with the control option), initial PID, 6/4 loop select (only on models with six loops), auto tuning, control mode, method (only during loop control with PV switching), program control ON/OFF (only on models with the program control option), PID control mode, burnout, and RJC.

#2 Contact input registration/AUX (Alarm mode)

Contact input registration, remote setting, alarm mode, and SP number selection source.

#3 Output processing

Control output, cycle time, and analog-output type

#4 Relay

FAIL ON/OFF, self diagnosis ON/OFF, and relay action/behavior (energize/deenergize, hold/nonhold)

#5 Tuning setting

Tuning item selection

#6 External loop setting (For details on the settings, see the

CX2000 Communication Interface User’s Manual

DAQSTATION CX1000/

Setup Items in the Control Setting Mode

#1 Control input range

Input type, mode, type, range, span, scale, unit, square root, low-cut, bias, filter, and ratio.

#2 Control alarm

Type, standby, relay output ON/OFF, and alarm value

1-12 IM 04L31A01-01E

1.2 Control Function Overview

#3 Operation-related parameters/Zone PID

Suppressing function, ramp-rate-time unit, SP ramp-down-rate/SP ramp-up-rate, tag, tag comment, reference point (when zone PID is selected), switching hysteresis (when zone PID is selected), and reference deviation (when zone PID is selected).

#4 PID parameters

SP, PID constant, output limit, shutdown ON/OFF, manual reset, relay hysteresis (only during ON/OFF control), reverse/direct, and preset output.

#5 Control group setting

Group name, kind (internal loop/external loop/measurement channel), and number.

#6 Ten-segment linearizer I/O

Input type, mode, and biasing or approximation input/output values.

#7 Program control paramters (only when program control is ON)

#1 Program parameter setting

#1 Pattern initial setting #2 Wait action setting #3 Pattern start setting #4 Program pattern setting #5 Event setting #6 Event output setting #7 Hysteresis (PV event) #8 Repeat action setting

#2 AUX (Auto message, Display position)

Auto message for program Run/Reset, Program display position, and Auto change to program run display.

#3 AUX (Event group)

#8 Detailed setting (“#7” when program control is OFF)

#1 Control function

SP tracking, PV tracking, SP limiter, output velocity limiter, and anti-reset windup

auto/manual. #2 Hysteresis (Alarm) #3 DIO monitor and operation setting #4 DI/DO label setting

#9 Control math setting (“#8” when program control is OFF)

#1 PV/SP math, Retransmission #2 Logic math (#1 when both PV/SP computation and analog retransmission are

inactive.) #3 Constant (#2 when both PV/SP computation and analog retransmission are

inactive.)

Explanation of Functions

Control Operation Display

In operation mode, the following control operation displays can be shown.

• Control group display

• Tuning display

• Overview display

IM 04L31A01-01E

This display is used to monitor the control status of multiple loops simultaneously including external loops. You can select from three display styles as shown in the display example in the figure below. If you include the measurement channels for the measurement function in the group, you can also monitor the measured values on the measurement channels at the same time on this display.

This display is used to optimize (tune) the control parameters such as PID constants.

This display is used to monitor the alarm status of all control loops.

1-13

1.2 Control Function Overview

• DI/DO status display

• Internal switch status display

• Control action summary display

On models with the program control function option, additional displays are available such as 1) the program control display, which can show the pattern and current PV accumulated on the screen during program operation and 2) the program event summary display, which shows a log of time events and PV events that occurred during program operation. Displays common with the measurement function include: 1) the alarm summary display, which shows a log of alarm occurrence status and 2) the memory summary display, which shows the file information of the internal memory. In addition, the values of PV, SP, and OUT can be assigned to channels, and the trends of these channels can be displayed along with the trends of measurement channels on the trend display of the measurement function.

• Control group display

Displays the ON/OFF status of the current contact input (DI) and contact output (DO).

Displays the current ON/OFF status of the internal switches.

Displays a log of control actions such as operation run/stop and auto/manual operation switching.

Display Examples

Faceplate style Hybrid styleController style

• Tuning display • Overview display

• Control operation summary display

• Internal switch status display • Program control display

• DI/DO status display

1-14 IM 04L31A01-01E

1.2 Control Function Overview

Saving Data

Communications

Acquisition to the Internal Memory

Along with the measurement data, the data of SPs, PVs and OUT, and event information for control are acquired to the internal memory.

Saving Data to the External Storage Medium

You can save the data acquired in the internal memory to an external storage medium (floppy disk, Zip disk, or ATA flash memory card).

Floppy disk

DISP

/ENTER

• Control setup data

• Measurement setup data

Zip disk

ATA flash memory card

• Measured data

The following communications functions are available. For a description on the handling of the communications function and the software “DAQSTANDARD for CX” that comes with the package, see the respective manuals.

Communications with Controllers

The CX2000 can communicate with UT Series Controllers made by Yokogawa M&C Corporation to transmit/receive control parameters and receive PV data. Up to 16 external loops can be constructed.

Explanation of Functions

DISP

/ENTER

UT Series controllers

Up to 16 units (16 loops)

Communications with PLCs

The CX2000 can carry out ladder communications between PLCs (sequencers).

PLCs (such as the FA-M3 by YOKOGAWA)

DISP

/ENTER

DISP

/ENTER

Up to 32 units

Communications with PCs

The CX2000 can communicate with PCs.

• Modbus master/slave

DISP

/ENTER

• Dedicated protocol communications with the PC (Command communications)

• Display settings/data of the CX using “DAQSTANDARD for CX”

IM 04L31A01-01E

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1.3 Basic Settings of Control

PID Group Number

You can set up to eight groups of control parameters (“PID parameters” on the setting display) that you wish to change collectively through control. You set the number of groups to be used from 1 to 8. For example, if you set a value of 4, the selectable PID numbers will be 1 through 4. The parameters that are included in a single control parameter group vary depending on the control method (“Control output” in the settings).

During PID control: SP, PID constant, output lower/upper limit, shutdown ON/OFF (only

when outputting 4-20 mA of current), manual reset, reverse/direct, and preset output

During ON/OFF control: SP, relay hysteresis, reverse/direct, and preset output

Control Period

The following control periods can be selected: 250 ms (initial value), 500 ms, and 1 s. The control period is common to all loops. When the A/D integral time is set to 100 ms, the control period is fixed to 1 s. The scan interval of control PV input is the same as the control period.

PID Selection Method (Zone PID ON/OFF)

Select either one from below. When program control is ON on models with the program control option, the selection is between the segment PID method (zone PID OFF) and the zone PID method.

• Target setpoint selection method (zone PID: OFF) (initial value)

In the target setpoint selection method, the operator can switch up to 8 SPs as necessary. There are two methods in switching the SPs. One method is to specify the SP number (SPs are registered to PID numbers (= SP numbers) along with PID constants and other parameters) using keys on the front panel. The other is to use external contact input or communications. The SP can be switched at any time. During switching, the setpoint rampup-rate or setpoint ramp-down-rate setting is activated. In addition, when a switch is made, control computation is performed using the PID constant group that corresponds to the SP at that point.

Rise according to

ramp-up setting

(No.1 PID)

the setpoint

SP1

Switch from SP1 to SP3 Switch from SP3 to SP1 Switch from SP1 to SP2

• Zone PID method

In the zone PID method, the measurement span is divided into a maximum of seven zones using reference points. The optimum PID constant is preassigned to each zone, and the PID constant (in actuality, other control parameters that are registered using the PID number are included) is automatically switched according to the PV. The number of reference points that can be specified is “PID group number – 2.” As shown in the figure on the next page, if the PID group number is 7, the number of reference points is 5. If the number of reference points is 5, there are 6 zones. For example, if zones 1 through 6 correspond to PID numbers 1 through 6 and if the PV is within the zones of reference points 3 and 4, the control parameters of PID number 4 are selected. The control parameters of PID number 7, which cannot be assigned to a zone, are selected when the deviation between the SP and PV becomes greater than the preset reference deviation.

SP3

(No.3PID)

Fall according to the setpoint ramp-down setting

SP1

(No.1 PID)

SPn: SP number

SP2

(No.2PID)

Rise according to the setpoint ramp-up setting

Time

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1.3 Basic Settings of Control

Maximum value of

measurement span

Reference point 5

Reference point 4

Reference point 3

Reference point 2

Reference point 1

Minimum value of

measurement span

If the current PV here, control using thePID constant of No. 4.

Restart and Restart for Program Control

Select how the CX2000 is to behave when an extended power failure occurs during control operation (power failure period of 5 s or more) and the power recovers.

• Continue (initial setting):

Continue the operation before the power failure occurred.

• Manual operation:

Start from the manual operation condition.

• Auto operation (only during fixed-point operation):

Auto operation by continuing the operation before the power failure occurred.

• Reset (only during program operation):

Stop the program operation.

Note

If the duration of the power failure is less than or equal to 2 s (a short power disruption), the

operation before the disruption continues. If the duration is between 2 to 5 s, the behavior for a

short power disruption or an extended power failure is carried out depending on the condition.

Change in the PV.

No.6 PID

No.5 PID

No.4 PID

No.3 PID

No.2 PID

No.1 PID

Explanation of Functions

Initial PID

Select whether the initial PID constant in PID parameter settings (see optimized to temperature control, pressure control, or flow control. Below are the initial values of PID constants. Initial values for temperature: P = 5.0%, I = 240 s, and D = 60 s. Initial values for pressure/flow: P = 120.0%, I = 20 s, and D = 0 s.

6/4 Loop Select (only on 6-loop models)

Select whether the number of loops used is 6 (factory default setting) or 4. If set to 6 loops, a limitation occurs in the assignment of analog control input signal (see “Difference in the Control Input Configuration According to the 6/4 Loop Selection and Control Mode” on the

Control Mode

The following three control modes are available. The mode is selected for each control loop.

• Single-loop control

Basic control consisting of a single system of controller CPU.

PIDSP

OUT

• Cascade control

Control consisting of two systems of controller CPUs that uses the primary control output as the secondary control SP. Continuous PID control is only possible for primary control.

PV2

PV1

PID

page 1-32

) is

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PID

OUT

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1.3 Basic Settings of Control

• Loop control with PV switching

Input Switching Condition ([Method] on the setting display)

• Auto switching according to the PV range ([Range] on the setting display)

Process value = 1–

PV input 1 – PV switching low limit

PV switching high limit – PV switching low limit

• Auto switching according to the PV switching upper limit ([PVHigh] on the setting display)

• Switching through control input ([Signal] on the setting display)

Contact input is OFF: Switch to PV1. Contact input is ON: Switch to PV2.

Analog Retransmission

Outputs the specified computed result instead of the computed PID value from the control output terminal. In control setting mode, you can set the equation, output span, unit, and method of processing computation errors for the loop specified for analog retransmission. Unlike the 3 control modes above, control functions such as upper/lower output value and preset output are not supported.

Difference in the Control Input Configuration According to the 6/4 Loop Selection and Control Mode (when PV/SP computation is OFF)

The input signal assignments of each terminal of the analog control input block vary depending on the 6/4 loop selection and the selected control mode as shown in the figure below. If set to 6 loops, the control mode of the 5 single-loop control.

• 6 loops

Single-loop control that switches between two PV inputs (PV1 and PV2) according to the following conditions.

PV1

PV2

PIDSP

OUT

Switches PV inputs (PV1 and PV2) automatically according to the preset “PV switching low-limit” and “PV switching high-limit” as shown in the following figure. However, PV1 must be less than PV2.

PV range high limit

PV switching high limit

PV switching low limit

PV range low limit

PV2

Process value according to the equation

PV1

The PV value is computed using the following equation when “PV switching lower limit < PV1 ≤ PV switching upper limit” and “PV switching lower limit ≤ PV2 < PV switching upper limit.”

× PV input 1+ × PV input 2

PV input 1 – PV switching low limit

PV switching high limit – PV switching low limit

The preset “PV switching upper limit” and PV1 are compared. Auto switching is performed according to the following conditions. The switching hysteresis is approximately 0.5% of the PV range span. When PV1 ≤ PV switching upper value: Switch to PV1 When PV1 > PV switching upper value: Switch to PV2

Input is switched using “PV switching (loops 1 to 4)” (see

PV, PV1, PV2: PV input, (RSP): RSP input (not used during program control), : unused terminal

LOOP4

(RSP)

PV1PV2

LOOP6

LOOP3

(RSP)

PV1PV2

LOOP2 LOOP5

21PV1

(RSP)

PV1PV2

(RSP)

page 1-27

and 6th loops can only be set to

LOOP1

PV1PV2

) as follows:

[Control mode setting] During single-loop control During cascade control During loop control with

PV switching

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