Azbil C25 User manual

Thank you for purchasing an Azbil
Corporation product.
This manual contains information for
ensuring the correct use of this product.
It also provides necessary information
for installation, maintenance, and
troubleshooting.
This manual should be read by those
who design and maintain equipment
that uses this product. Be sure to keep
this manual nearby for handy reference.
(Not for use in Japan) No. CP-SP-1149E
Single Loop Controller
Model C25/26
User’s Manual
for
Installation & Configuration

NOTICE
Be sure that the user receives this manual before the product is used.
Copying or duplicating this user’s manual in part or in whole is forbidden.
The information and specifications in this manual are subject to change
without notice.
Considerable effort has been made to ensure that this manual is free from
inaccuracies and omissions. If you should find an error or omission, please
contact the azbil Group.
In no event is Azbil Corporation liable to anyone for any indirect, special or
consequential damages as a result of using this product.
The quick reference guide on pages D-1 to D-8 summarizes key operations, parameters,
and settings, and gives concrete operation examples using illustrations. Try looking at these
pages first, and then read the main text for details.
A separate color version of the quick guide printed on dirt-resistant paper is available for
convenient use on the work site (document No. CP-SP-1217E). Contact the azbil Group or a
distributor for details.
Getting Up to Speed with model C25/26
© 2004–2020 Azbil Corporation. All Rights Reserved.
Modbus™ is a trademark and the property of Schneider Electric SE, its subsidiaries
and affiliated companies.

i
To reduce the risk of an electric shock that could cause personal injury,
follow all safety notices in this document.
This symbol warns the user of a potential shock hazard where hazardous
live voltages may be accessible.
If this device is used in a manner not specified by the manufacturer, its built-in safety protections will be
impaired.
Do not replace any component (or part) not explicitly specified as replaceable by your supplier.
All wiring must be in accordance with local norms and carried out by authorized and experienced personnel.
A switch in the main supply is required near the equipment.
Main power supply wiring requires a (T) 500 mA, 250 V fuse(s) (IEC 127).
z EQUIPMENT RATINGS
Supply voltages: 100 to 240 V AC (operating power supply voltage 85 to 264 V AC)
Frequency: 50/60 Hz
Power consumption: 12 VA max.
z EQUIPMENT CONDITIONS
Do not operate the instrument in the presence of flammable liquids or vapors.
Operation of any electrical instrument in such an environment constitutes a safety hazard.
Temperature: 0 to 50 °C
Humidity: 10 to 90 %RH (non-condensing)
Vibration: 2 m/s
2
(10 to 60 Hz)
Over-voltage category: Category II (IEC60364-4-443, IEC60664-1)
Pollution 2
Installation location: Indoors
Altitude: 2000 m or less
z EQUIPMENT INSTALLATION
The controller must be mounted into a panel to limit operator access to the rear terminal.
Specifications of common mode voltage: The common mode voltages of all I/O except for main
supply and relay outputs are less than 30 Vrms, 42.4 V peak and 60 V DC.
z STANDARDS COMPLIANCE
EN61010-1,
EN61326-1 (For use in industrial locations)
During EMC testing, the reading or output may fluctuate by ±10 %FS.
Safety Requirements

ii
Conventions Used in This Manual
The safety precautions explained in the following section aim to prevent injury to the operator and others, and to
prevent property damage.
WARNING Warnings are indicated when mishandling this product
might result in death or serious injury.
CAUTION Cautions are indicated when mishandling this product
might result in minor injury to the user, or only physical
damage to the product.
In describing the product, this manual uses the icons and conventions listed below.
Use caution when handling the product.
The indicated action is prohibited.
Be sure to follow the indicated instructions.
Handling Precautions:
Handling Precautions indicate items that the user should pay attention to when handling
this device.
: This indicates the item or page that the user is requested to refer to.
Note: Notes indicate information that might benefit the user.
(1) (2) (3): The numbers within parenthesis indicate steps in a sequence or parts in an explanation.
[para], [mode] etc.: These indicate keys on the keyboard of this unit, and messages and menus that appear
on the personal computer screen.
>> : Indicates the result of an operation or the status after the operation.

iii
z Numeric value and character display on LED
Numeric values The 7-segment LED expresses numeric values as follows:
0 1 2 3 4
5 6 7 8 9
Alphabetical characters The 7-segment LED expresses alphabetical characters shown below. There are
some alphabetical characters, which are not displayed on the LED.
A B C D E
a b c d e
F G H I J
f g h i j
K L M N O
k l m n o
P Q R S T
p q r s t
U V Y Z –
u v y z
Handling Precautions
As shown above, numeric value“2” and alphabetic character “Z” are shown
in the same manner.
Accordingly, numeric value “5” and alphabetic character “S”, as well as
numeric value “9” and alphabetic character “Q” are also shown in the same
manner.

iv
Safety Precautions
WARNING
Do not use this device in an environment with conductive pollution, or with dry non-
conductive pollution which can become conductive due to condensation, etc.
Otherwise, problems such as tracking phenomena may damage parts, resulting in fire.
When wiring the power for this device, be sure to mount a shutoff switch for the main power
to this unit within reach of the operator.
In addition, when wiring the power for AC power models, install a time-lag (T) fuse (rated
current 0.5 A, rated voltage 250 V) as specified by IEC 127.
Otherwise, tracking phenomena or parts failure due to other factors may cause fire.
Do not disassemble this device.
Doing so might cause electric shock or faulty operation.
Before removing, mounting, or wiring this device, be sure to turn off the power to the device
and all connected devices. Failure to do so might cause electric shock.
Do not touch electrically charged parts such as the power terminals.
Doing so might cause electric shock.
CAUTION
Use this device within the operating ranges recommended in the specifications (temperature,
humidity, voltage, vibration, shock, mounting direction, atmosphere, etc.).
Do not block ventilation holes.
Doing so might cause fire or faulty operation.
Wire this device properly according to the instructions, using the specified types of wire and
standard installation methods.
Failure to do so might cause electric shock, fire or faulty operation.
Do not allow lead clippings, metal shavings or water to enter the controller case.
Doing so might cause fire or faulty operation.
Firmly tighten the terminal screws with the specified torque as listed in the specifications.
Insufficient tightening of terminal screws might cause electric shock or fire.
Do not use unused/spare terminals on this device as relay terminals.
Doing so might cause electric shock, fire, or faulty operation.
We recommend attaching the terminal cover (sold separately) after wiring this device.
Failure to do so might cause electric shock, fire, or faulty operation.
Use the relays within the recommended life.
Failure to do so might cause fire or faulty operation.
If there is a risk of a power surge caused by lightning, use a surge absorber (surge protector)
to prevent fire or device failure.
Do not make incorrect connections. If the cables are connected incorrectly, this might cause
the unit to malfunction.
The controller requires 5 seconds to stabilize after power ON. Great care should be taken if
the relay output from the controller is used as an interlock signal.

v
CAUTION
There is no isolation between control outputs 1 and 2. When necessary, use an appropriate
isolator.
Do not connect multiple loader cables to multiple units from one personal computer. The
current coming from other circuits might cause the PV value indication error to occur.
Do not connect any terminating resistor in the communication path when performing the
RS-485 wiring.
Doing so might cause the communication to fail.
Do not operate the keys with a mechanical pencil or sharp-tipped object.
Doing so might cause faulty operation.

vi
The Role of This Manual
Four manuals are available for model C25/26 Single Loop Controller (hereafter referred to as“this unit”). Read
appropriate manuals according to your requirements. If you do not have a required manual, contact the azbil Group
or an Azbil Corporation dealer.
Additionally, you can download necessary manuals from “http://www.azbil.com”.
Single Loop Controller Model C25/26 User’s Manual for Installation &
Configuration
Manual No. CP-SP-1149E
This manual.
The manual describes the hardware and all functions of this unit. Personnel in charge
of design, manufacture, operation, and/or maintenance of a system using this unit
and those in charge of communication software of a system using the communication
functions of this unit must thoroughly read this manual. This manual also describes
the installation, wiring, connections for communication, all functions and settings of
this unit, operating procedures, communication with host station, such as personal
computer, communication addresses, troubleshooting, and detailed specifications.
Single Loop Controller Model C25/26 User’s Manual for Installation
Manual No. CP-UM-5288JE
This manual is supplied with the product. Personnel in charge of design and/or
manufacture of a system using this unit must thoroughly read this manual. This
manual describes the safety precautions, installation, wiring, list of parameters,
and primary specifications. For further information about operation, refer to
another manual,“Installation & Configurations”.
User’s Manual for Smart Loader Package Model SLP-C35 for Single Loop
Controller Model C15/25/26/35/36
Manual No. CP-UM-5290E
This manual is supplied with the Smart Loader Package. The manual describes
the software used to make various settings for C15/25/26/35/36 using a
personal computer. Personnel in charge of design or setting of a system using
C15/25/26/35/36 must thoroughly read this manual. The manual describes
installation of the software into a personal computer, operation of the personal
computer, various functions, and setup procedures.
CP-SP-XXXXE
Quick Reference Guide
for Model XXX
Quick Reference Guide for Model C25/26
Manual No. CP-UM-1217E
For those using this device for the first time or for operators on the work site,
this guide serves as a reference when setting or modifying parameters. Key
operations, menu flowcharts and parameter settings are presented with color
illustrations.

vii
This manual is organized as follows.
Chapter 1. OVERVIEW
This chapter describes the applications, features, model selection guide, and part
names and functions of this unit. Since the part names described in this chapter are
used in the subsequent descriptions, the part names and functions of this unit must
be understood correctly in this chapter.
Chapter 2. OUTLINE OF FUNCTIONS
This chapter describes the outline and operation flow of the functions of this unit.
Chapter 3. INSTALLATION
This chapter describes the environmental conditions, installation dimensions,
installation procedures, and necessary tools when installing this unit.
Chapter 4. WIRING
This chapter describes the wiring procedures, wiring precautions, and connection examples.
Chapter 5. DETAILED DESCRIPTION OF EACH FUNCTION
This chapter describes each function of this unit in detail.
Chapter 6. LIST OF DISPLAYS AND SETTING DATA
This chapter lists up the display items of this unit and their contents.
Chapter 7. CPL COMMUNICATION FUNCTION
This chapter describes how to connect this unit to a host unit, such as a personal
computer or PLC through Azbil Corporation’s standard CPL communication using
RS-485.
Chapter 8. Modbus COMMUNICATION FUNCTION
This chapter describes how to connect this unit to a host unit, such as a personal
computer or PLC through Modbus communication.
Chapter 9. LIST OF COMMUNICATION DATA
This chapter shows the list of communication data inside the memory of this unit.
Chapter 10. MAINTENANCE AND TROUBLESHOOTING
This chapter describes the maintenance and inspection of this unit, as well as
troubleshooting.
Chapter 11. CALIBRATION
This chapter describes how to calibrate this unit in order to maintain accuracy and
to safely operate this unit for an extended period of time.
Chapter 12. DISPOSAL
This chapter describes safety precautions and how to dispose of this unit when the
unit is no longer used.
Chapter 13. SPECIFICATIONS
This chapter describes the general specifications, performance specifications, and
optional parts of this unit.
Organization of This User’s Manual

viii
Contents
Safety Requirements
Conventions Used in This Manual
Safety Precautions
The Role of This Manual
Organization of This User’s Manual
Quick Reference Guide for Model C25/26
Flowchart of key operations and displays D-2
Operation examples D-4
List of parameters D-6
Chapter 1. OVERVIEW 1-1
1 - 1 Overview 1-1
 Model selection table 1-2
 Accessories and optional parts 1-2
1 - 2 Part Names and Functions 1-3
 Main unit and console 1-3
 Rear panel 1-6
Chapter 2. OUTLINE OF FUNCTIONS 2-1
2 - 1 Input/Output Configuration 2-1
2 - 2 Key Operation 2-2
 Data setting procedures 2-4
 [mode] key operating procedures 2-7
 User level 2-7
2 - 3 Operation Modes 2-8
Chapter 3. INSTALLATION 3-1
 Installation locations 3-1
 External dimensions 3-1
 Panel cutout dimensions 3-2
 Mounting procedures 3-3
Chapter 4. WIRING 4-1
4 - 1 Wiring 4-1
 Terminal assignment label symbols 4-2
 Wiring precautions 4-2
 Connection of open collector output to digital input 4-5
 Connection of communication (RS-485) cable 4-5
 Connection with solid state relay (SSR) 4-7
 Connection with current-input type controllers 4-9
 Wiring with zener barriers 4-10
 Noise preventive measures 4-10
4 - 2 Recommended Cables 4-11

ix
Chapter 5. DETAILED DESCRIPTION OF EACH FUNCTION 5-1
5 - 1 PV Input 5-1
 PV input range type 5-1
 Temperature unit 5-3
 Cold junction compensation (T/C) 5-3
 PV square root extraction dropout 5-4
 Decimal point position 5-5
 PV input range low limit/high limit 5-6
 PV ratio and PV bias 5-6
 PV low limit alarm threshold 5-7
 PV filter 5-7
 PV hold 5-7
 PV low limit/high limit and PV low limit alarms/high limit alarms 5-8
 Zener barrier adjustment 5-9
5 - 2 Mode 5-11
 AUTO/MANUAL mode 5-11
 RUN/READY mode 5-11
 Auto tuning (AT) stop/start 5-12
 Release all digital output (DO) latches 5-12
 Communication digital input 1 (communication DI 1) 5-12
5 - 3 Control 5-13
 Control method 5-15
 Control action and Heat/Cool control 5-16
 Special control outputs 5-16
 MANUAL mode change 5-17
 PID control initialization 5-17
 Initial output of PID control 5-18
 ON/OFF control 5-18
 PID control 5-19
 Heat/Cool control 5-21
 Auto tuning (AT) 5-23
 Just-FiTTER 5-25
 RationaLOOP 5-25
 SP lag 5-25
5 - 4 Auto Tuning (AT) Function 5-26
 Starting procedures 5-26
 Stopping procedures 5-26
5 - 5 Set Point (SP) 5-29
 SP setup in operation display mode 5-29
 LSP system group 5-30
 LSP1 to 4 5-30
 PID group number 5-30
 LSP group number 5-30
 DI assignment of LSP group selection 5-31
 SP ramp unit 5-31
 SP up ramp/down ramp 5-32
 SP low limit/high limit 5-33

x
 DI assignment of SP ramp enabled/disabled 5-33
5 - 6 Digital Input (DI) and Internal Contact 5-34
 Operation type 5-35
 Internal event No. assignment 5-36
 Input bit function 5-37
 Input assignment 5-38
 Polarity of input assignment 5-39
 Polarity of input bit function 5-40
 DI assignment setting with the SLP-C35 Smart Loader Package 5-40
5 - 7 Internal Event 5-41
 Operation 5-42
 Operation type 5-49
 Direct/reverse, standby, and EVENT state at READY 5-50
 Alarm OR, special OFF setup, and delay time unit 5-51
 Main setting, sub-setting, and hysteresis 5-52
 ON delay and OFF delay 5-53
5 - 8 Digital Output (DO) 5-54
 MV1/MV2 process 5-55
 Operation type 5-57
 Output assignment 5-58
 Polarity of output assignment 5-60
 Polarity of output bit function 5-61
 Latch 5-61
 DO assignment setting with the SLP-C35 Smart Loader Package 5-62
5 - 9 Application Examples 5-63
 Examples of applications using assignment functions 5-63
5 - 10 Continuous Output 5-70
 Output range 5-70
 Output type 5-70
 Output scaling low limit/high limit 5-71
 MV scalable bandwidth 5-72
5 - 11 Current Transformer (CT) Input 5-73
 CT type 5-74
 CT output 5-74
 CT measurement wait time 5-74
 Number of CT turns and number of CT power wire loops 5-75
5 - 12 Console Display and Key Operation 5-77
 Key operation type 5-77
 [mode] key function 5-77
 MODE display setup 5-78
 PV/SP display setup 5-79
 MV display setup 5-80
 Event setting value display setup 5-81
 Event remaining time display setup 5-81
 CT input current value display setup 5-82
 User level 5-82
 LED monitor 5-82
 MS indicating lamp 5-83
 User function 5-86

xi
 Key lock, communication lock, and loader lock 5-90
 Password 5-91
Chapter 6. LIST OF DISPLAYS AND SETTING DATA 6-1
6 - 1 List of Operation Displays 6-1
 Operation displays 6-1
6 - 2 List of Parameter Setting Displays 6-3
 Mode bank 6-3
 SP bank 6-4
 Event bank 6-5
 PID bank 6-6
 Parameter bank 6-8
 Extended tuning bank 6-9
6 - 3 List of Setup Setting Displays 6-10
 Setup bank 6-10
 Event configuration bank 6-17
 DI assignment bank 6-19
 DO assignment bank 6-23
 User function bank 6-26
 Lock bank 6-27
 Instrument information bank 6-27
Chapter 7. CPL COMMUNICATION FUNCTION 7-1
7 - 1 Outline of Communication 7-1
 Features 7-1
 Setup 7-1
 Communication procedures 7-2
7 - 2 Message Structure 7-3
 Message structure 7-3
 Data link layer 7-3
 Application layer 7-6
7 - 3 Description of Commands 7-7
 Continuous data read command (RS command) 7-7
 Continuous data write command (WS command) 7-8
 Fixed length continuous data read command (RD command) 7-9
 Fixed length continuous data write command (WD command) 7-10
 Fixed length random data read command (RU command) 7-11
 Fixed length random data write command (WU command) 7-12
7 - 4 Definition of Data Addresses 7-13
7 - 5 Numeric Representation in the Application Layer 7-14
7 - 6 List of Termination Codes 7-15
7 - 7 Reception and Transmission Timing 7-16
 Timing specifications for instruction and response message 7-16
 RS-485 driver control timing specifications 7-16
7 - 8 Cautions when Making Communication Programs for the Master Station 7-17
 Example of communications program 7-17

xii
Chapter 8. Modbus COMMUNICATION FUNCTION 8-1
8 - 1 Outline of Communication 8-1
 Features 8-1
 Setup 8-1
 Communication procedures 8-2
8 - 2 Message Structure 8-3
 Message structure 8-3
 Command type 8-6
 Amount of data 8-6
 Other specifications 8-6
8 - 3 Description of Commands 8-7
 Read command (03H) 8-7
 Write command (10H) 8-9
8 - 4 Specifications Common with CPL Communication Function 8-11
 Definition of data addresses 8-11
 Numeric representation 8-11
 RS-485 driver control timing specifications 8-11
Chapter 9. LIST OF COMMUNICATION DATA 9-1
 List of communication data 9-1
Chapter 10. MAINTENANCE AND TROUBLESHOOTING 10-1
 Maintenance 10-1
 Alarm displays and corrective action 10-1
 Behavior in case of PV input failure 10-2
Chapter 11. CALIBRATION 11-1
 Starting the calibration 11-1
 Exiting the calibration 11-1
 Cautions before starting the calibration 11-2
 Measuring instruments required for calibration 11-2
 Calibration procedures 11-2
Chapter 12. DISPOSAL 12-1
Chapter 13. SPECIFICATIONS 13-1
 Specifications 13-1
 Accessories and optional parts 13-5

xiii
Appendix App.-1
Glossary App.-1
Index

D-1
Quick Reference Guide for Model C25/26
This guide offers a summary of key operations, parameter flowcharts, and settings, for convenient reference
at the operation site. This guide is made for repeated use. Dirt wipes off easily and even notes written with an
oil-based felt-tip pen can be removed with an eraser. If more detailed information on model C25/26 is needed,
refer to the user's manuals: CP-SP-1149E for installation and configuration.
The most convenient way to configure the C25/26 is with the Smart Loader Package (model No. SLP-C35J50).
Please contact the azbil Group or a distributor for more information.
Upper display
Lower display
Indicator during AT
Loader connector
Mode indicator
Mode
indicator
[mode] key
[para] key
Various indicators
[para] key
[display] key
[enter] key
[display] key
[enter] key
Loader connector
[mode] key
[<], [ ], and [ ] keys
Upper display
Lower display
Multi-Status (MS) display
[<], [ ], and [ ] keys
Upper display This display shows either the PV value or the display value and set value for each displayed item. If an alarm is triggered, the
normal display and alarm code are displayed alternately. During auto tuning (AT), the rightmost decimal point flashes twice
repeatedly.
Lower display This display shows either the SP/MV/CT or the display value and set value for each displayed item. The rightmost decimal
point lights up or flashes to show RUN/READY mode or communications status, depending on the setting.
Multi-Status (MS) display Turns ON in READY mode or when an alarm occurs, depending on the ON conditions and the current status. When lit, in ad-
dition to flashing and reciprocating between left and right, it performs MV graph, DI monitor, internal event monitor, and
other display functions.
Mode indicators man: Lights when MANUAL (AUTO mode if not lit)
ev1, ev2, ev3: Lights when event relays are ON
ot1, ot2: Lights when the control output is ON (always lit when the current output is used)
[mode] key • When this key is pressed and held for more than 1 second in the operation display mode, any of the following operations
from 0 to 7 which have been set previously can be executed:
0 : Mode key does not operate
1 : AUTO/MANUAL mode selection (Initial value)
2 : RUN/READY mode selection
3 : AT (Auto Tuning) start/stop selection
4 : LSP (Local SP) group selection
5 : Release all DO (Digital Output) latches
6 : Mode key does not operate
7 : ON/OFF selection of communication DI1
[display] key This key is used to change the display item in the operation display mode.
When pressing this key in the bank selection, bank setup, or user function setup display mode, the display is changed at the
operation display.
[para] key When this key is kept pressed for 2 s. or longer in the operation display mode, the display is then changed to the setup
display.
[<], [ ] , [ ] keys Theses keys are used to increase or decrease the numeric value, or to shift the digit.
The [ ] and [ ] keys are used to change the bank or display item.
[enter] key This key is used to begin changing settings (display goes from lit to flashing) and to finalize new settings (display goes from
flashing to steadily lit).
Loader connector This connector is used for connecting to a PC using the dedicated cable supplied with the Smart Loader Package.
: Initial value

D-2
Flowchart of key operations and displays
[display] key
[para] key
[display] key
2-second press + hold
of [para] key
[display] key *2
PV value
SP value
(2) (1)
LSP group
number
SP value
PV value
MV value
Timer remaining
time 3
Internal event 3
delay time
[display] key *3
Heat manipulated
variable
MV value
Internal event 3
sub setting
Setting value
Internal event 3
main setting
Setting value
[para] key
*1
[para] key
or
[] key
[enter] key 2-second
press + hold
of [para] key
[] key
[enter] key
(AUTO)
For change
from MANUAL
to AUTO
to (2)
(MANUAL)
For change
from AUTO to
MANUAL
to (1)
User
function
[Mode] [SP] [Event] [PID] [Parameter] [ Extended tuning ]
2-second press +
hold of [para] key
Upper and lower
displays remain off for
5s after power ON. Each
mode indicator lights
sequentially, and then the
operation display appears.
When the power
is turned ON

D-3
Analog inputControl actions
SPContinuous outputs
CommunicationsKey operations and displays
zzSome items are not displayed depending on the availability of optional functions, model number,
display setup (C73 to C78) and User level (C79).
zzPressing [display] key while bank item or user function item is displayed has the effect of canceling
and returning to the operation display item.
*1 The parameters and numerical values registered as user functions UF are displayed.
*2 If no key is pressed for 3 minutes, the display automatically returns to 2, the basic display.
*3 If the [<] key is pressed while holding down the [para] key, various displays/settings can be
navigated in reverse order.
*4 Cannot be selected if ROM version 1 (id02) of the instrument information bank is 2.26 or earlier.
Explanation of arrows
[display] key :
[para] key, [ ] key, [para] key or [ ] key :
[enter] key :
Movement through each setup menu
• [ ] key
• [para] key or [ ] key
Bank selection
Operation displays
Timer remaining
time 2
Internal event 2
delay time
Cool manipulated
variable
MV value
Internal event 2
sub setting
Setting value
PV value
AT progress
value
Internal event 2
main setting
Setting value
CT1
Current value
Timer remaining
time 1
Internal event 1
delay time
CT2
Current value
Internal event 1
sub setting
Setting value
Internal event 1
main setting
Setting value
[display] key
[enter] key 2-second
press +
hold of
[para] key
[para] key
or
[] key
[] key
[Setup] [ Event configuration ] [ DI assignment ] [DO assignment] [User function] [Lock] [ Instrument information ]
**44
**44

D-4
Setup of PV input range type
1Press [display] once
to get the operation
display.
If the sensor has not been
wired or is disconnected,
an alarm for abnormal PV
input (any one from AL0 1
to AL 11) may appear on
the upper display.
2Press and hold [para]
for more than 2s to get
the parameter setup
display.
MOde flashes on the
upper display.
3Press [ ] or [ ] repeat-
edly, and Stup flashes
on the upper display.
4Press [enter].
The current set value
for C0 1(PV input
range type) is
displayed.
5Press [enter].
The rightmost digit on the lower display flashes and its value
can be changed.
Press [<], [ ] or [ ] to change to the desired sensor type in the
PV input range list.
Then press [enter] to finalize your selection.
If the number is flashing, the [enter] key has not yet been
pressed, and the setting has not yet been saved.
Setup of event operation type
In this example, the event 1 operation type is set to deviation high
limit.
1Press [display] once
to get the operation
display.
2Press and hold [para]
for more than 2s to get
the parameter setup
display.
MOde flashes on the
upper display.
3Press [ ] or [ ] repeat-
edly to get evCf
flashing on the upper
display.
4Press [enter] to get
e1.c 1on the upper
display and 0is dis-
played on the lower
display.
0on the lower display indi-
cates that the event opera-
tion type is set to "none."
5When [enter] is
pressed, the rightmost
digit on the lower dis-
play flashes.
Press [ ] or [ ] to get 4
flashing on the display.
4on the lower display
indicates that the event
operation type is set for
deviation high limit.
6Press [enter], and the
displayed value 4
on the lower display
changes from flashing
to continuously lit and
the displayed value
is set.
Similarly, use e2.C 1to set the event 2 operation type, and use
e3.C1for event 3.
Red letters : Items before operation
Blue letters : Items during operation
Execution of auto tuning (AT)
AT forces ON/OFF of the MV a number of times (a limit cycle) to cal-
culate PID values.
Check that this operation does not create any problems for the as-
sociated equipment before executing AT.
1Press [display] once
to get the operation
display.
2
Press and hold [para]
for more than 2s to get
the parameter setup
display.
MOde
flashes on the
upper display.
3Press [enter] or [<]
to get A--M on the
upper display and
autO on the lower
display.
If the control method is
ON/OFF control and if Bit
3 (AT stop/start display) of
the mode display setting
(C73) is set to "disabled: 0,"
nothing is displayed.
4Press [ ] as needed
until At and at.Of
appear on the upper
and lower displays
respectively.
5When [enter] is
pressed, at.Of flashes
on the lower display.
The display flashes only
in RUN and AUTO modes,
and only if there is no PV
problem.
Also, if DI is set to "AT stop/
start", the display does not
flash and the setting can-
not be changed.
6Press [ ] or [ ] once,
and at.Of flashes on
the lower display.
7If [enter] is pressed, at.ON remains steadily lit and AT begins.
During AT, the rightmost decimal point flashes twice repeat-
edly.
When AT is done, the light goes off and the new PID values
go into effect.
During the AT process, if the mode is changed to READY or MANUAL, if PV
input is faulty, or if a power failure occurs, AT stops automatically without
changing the PID values.
AT can also be stopped by changing the setting from At.ON to At.OF (return
to step 4 above).
Setup of SP value
1Press [display] re-
peatedly so that the
orange SP indicator
lights up on the lower
display.
The operation display
now shows the SP.
2If [enter] is pressed,
the rightmost digit
on the lower display
flashes and numerical
value can be changed.
3Press [<], [ ] or [ ] to
change to the desired
SP value.
The flashing of the
number indicates that
the setting has not yet
been finalized.
If an SP limit is in effect, the
numerical value cannot be
changed to a value above
the limit. The SP limit must
be changed first.
4If [enter] is pressed,
the displayed value
is set and the display
changes from flashing
to continuously lit.
If the [display] key is
pressed without pressing
[enter] key, the status re-
turns to that of step 1.
Operation examples