YOKOGAWA F3CU04-0S User manual

User’s
Manual
IM 34M06H62-02E
Temperature Control and
PID Module
IM 34M06H62-02E
3rd Edition
Yokogawa Electric Corporation
Applicable Modules:
Model Code Model Name
F3CU04-0S Temperature control and PID module
F3CU04-1S Temperature control and PID module
Addendum
See at the end of this manual.

Blank Page

i
IM 34M06H62-02E 3rd Edition : Jul.16, 2015-00
Media No. IM 34M06H24-06E (CD) 1st Edition :Mar. 2015 (YK)
All Rights Reserved Copyright © 2014, Yokogawa Electric Corporation
Applicable Product
Range-free Multi-controller FA-M3
- Model : F3CU04-0S, F3CU04-1S
- Name : Temperature Control and PID Module
The document number for this manual is given below.
Refer to the document number in all communications, including when purchasing
additional copies of this manual.
- Document No.: IM 34M06H62-02E

ii
IM 34M06H62-02E 3rd Edition : Jul.16, 2015-00
Important
About This Manual
- This Manual should be passed on to the end user.
- Before using the controller, read this manual thoroughly to have a clear
understanding of the controller.
- This manual explains the functions of this product, but there is no guarantee that
they will suit the 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 to ensure accuracy in the preparation of this manual.
However, should any errors or omissions come to the attention of the user, please
contact the nearest Yokogawa Electric representative or sales office.
Safety Symbols
- Danger. This symbol on the product indicates that the operator must follow the
instructions laid out in this user's manual to avoid the risk of personnel injuries,
fatalities, or damage to the instrument. Where indicated by this symbol, the manual
describes what special care the operator must exercise to prevent electrical shock
or other dangers that may result in injury or the loss of life.
- Protective Conductor Terminal
This terminal is to prevent electric shock. Before using the instrument, connect to
the Protective earth (Comply with the regulation of each country.), and route the line
through the shortest path possible.
- Functional Earth Terminal
This terminal is for stable operation. Before using the instrument, be sure to ground
this terminal.
- Alternating current. Indicates alternating current.
- Direct current. Indicates direct current.

iii
IM 34M06H62-02E 3rd Edition : Jul.16, 2015-00
The following symbols are used only in the user's manual.
WARNING
- Indicates a “Warning”.
Draws attention to information essential to prevent hardware damage, software
damage or system failure.
CAUTION
- Indicates a “Caution”
Draws attention to information essential to the understanding of operation and
functions.
TIP
- Indicates a “TIP”
Gives information that complements the present topic.
SEE ALSO
- Indicates a “SEE ALSO” reference.
Identifies a source to which to refer.
Safety Precautions when Using/Maintaining the Product
- 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 stated in this manual
whenever handling the product. Take special note that if you handle the product in
a manner other than prescribed in these instructions, the protection feature of the
product may be damaged or impaired. In such cases, Yokogawa cannot 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 as well as designing or installing
separate protection and/or safety circuits for fool-proof design and fail-safe design of
processes and lines using the product and the system controlled by it, the user
should implement it using devices and equipment, additional to this product.
- If component parts or consumable are to be replaced, be sure to use parts specified
by the company.
- This product is not designed or manufactured to be used in critical applications
which directly affect or threaten human lives and safety — such as nuclear power
equipment, devices using radioactivity, railway facilities, aviation equipment,
shipboard equipment, aviation facilities or 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 attempt to modify the product.
- To avoid electrical shock, turn off the power before wiring.
- This product is classified as Class A for use in industrial environments. If used in a
residential environment, it may cause electromagnetic interference (EMI).
In such situations, it is the user's responsibility to adopt the necessary measures
against EMI.
Exemption from Responsibility
- Yokogawa Electric Corporation (hereinafter simply referred to as Yokogawa Electric)
makes no warranties regarding the product except those stated in the WARRANTY
that is provided separately.
- Yokogawa Electric assumes no liability to any party for any loss or damage, direct or
indirect, caused by the use or any unpredictable defect of the product.

iv
IM 34M06H62-02E 3rd Edition : Jul.16, 2015-00
Software Supplied by the Company
- Yokogawa Electric makes no other warranties expressed or implied except as
provided in its warranty clause for software supplied by the company.
- Use the software with one computer only. You must purchase another copy of the
software for use with each additional computer.
- Copying the software for any purposes other than backup is strictly prohibited.
- Store the original media that contain the software in a safe place.
- Reverse engineering, such as decompiling of the software, is strictly prohibited.
- Under absolutely no circumstances may the software supplied by Yokogawa Electric
be transferred, exchanged, or sublet or leased, in part or as a whole, for use by any
third party without prior permission by Yokogawa Electric.

v
IM 34M06H62-02E 3rd Edition : Jul.16, 2015-00
General Requirements for Using the FA-M3 / e-RT3 Controller
Set the product in a location that fulfills the following requirements:
- Where the product will not be exposed to direct sunlight, and where the operating
surrounding air temperature is from 0°C to 55°C (32°F to 131°F).
There are modules that must be used in an environment where the operating
surrounding air temperature is in a range smaller than 0°C to 55°C (32°F to 131°F).
Refer to “Hardware Manual” (IM 34M06C11-01E) or the applicable user's manual. In
case of attaching such a module, the entire system's operating surrounding air
temperature is limited to the module's individual operating surrounding air
temperature.
- Where the relative humidity is from 10 to 90%.
In places where there is a chance of condensation, use a space heater or the like to
constantly keep the product warm and prevent condensation.
- For use in Pollution Degree 2 Environment.
- Where there are no corrosive or flammable gases.
- Where the product will not be exposed to mechanical vibration or shock that exceed
specifications.
- Where there is no chance the product may be exposed to radioactivity.
Use the correct types of wire for external wiring:
- USE COPPER CONDUCTORS ONLY.
- Use conductors with temperature rating above 75°C.
Securely tighten screws:
- Securely tighten module mounting screws and terminal screws to avoid problems
such as faulty operation.
- Tighten terminal block screws with the correct tightening torque as given in this
manual. Refer to the “Hardware Manual” (IM 34M06C11-01E) or the applicable
user's manual for the appropriate tightening torque.
Securely lock connecting cables:
- Securely lock the connectors of cables, and check them thoroughly before turning
on the power.
Interlock with emergency-stop circuitry using external relays:
- Equipment incorporating the FA-M3 / e-RT3 controller must be furnished with
emergency-stop circuitry that uses external relays. This circuitry should be set up to
interlock correctly with controller status (stop/run).
Ground for low impedance:
- For safety reasons, connect the [FG] grounding terminal to a protective earth
(Comply with the regulation of each country.). For compliance to CE Marking, use
braided or other wires that can ensure low impedance even at high frequencies for
grounding.
Configure and route cables with noise control considerations:
- Perform installation and wiring that segregates system parts that may likely become
noise sources and system parts that are susceptible to noise. Segregation can be
achieved by measures such as segregating by distance, installing a filter or
segregating the grounding system.

vi
IM 34M06H62-02E 3rd Edition : Jul.16, 2015-00
Configure for CE Marking Conformance:
-For compliance to CE Marking, perform installation and cable routing according to
the description on compliance to CE Marking in the “Hardware Manual” (IM
34M06C11-01E).
-The list of CE conforming models is available in Appendix A2. of “Hardware
Manual”.
Keep spare parts on hand:
- We recommend that you stock up on maintenance parts, including spare modules,
in advance.
- Preventive maintenance (replacement of the module) is required for using the
module beyond 10 years.
Discharge static electricity before touching the system:
- Because static charge can accumulate in dry conditions, first touch grounded metal
to discharge any static electricity before touching the system.
Wipe off dirt with a soft cloth:
- Gently wipe off dirt on the product's surfaces with a soft cloth.
- If you soak the cloth in water or a neutral detergent, tightly wring it out before wiping
the product. Letting water enter the module interior can cause malfunctions.
- Do not use volatile solvents such as benzine or paint thinner or chemicals for
cleaning, as they may cause deformity, discoloration, or malfunctioning.
Avoid storing the FA-M3 /e-RT3 controller in places with high
temperature or humidity:
- Since the CPU module has a built-in battery, avoid storage in places with high
temperature or humidity.
- Since the service life of the battery is drastically reduced by exposure to high
temperatures, take special care (storage surrounding air temperature should be
from -20°C to 75°C).
- There is a built-in lithium battery in a Sequence CPU module which serves as backup
power supply for programs, device information and configuration information.
The service life of this battery is more than 10 years in standby mode at room
temperature. Take note that the service life of the battery may be shortened when
installed or stored at locations of extreme low or high temperatures. Therefore, we
recommend that modules with built-in batteries be stored at room temperature.
Always turn off the power before installing or removing modules:
- Failing to turn off the power supply when installing or removing modules, may result
in damage.
Do not touch components in the module:
- In some modules you can remove the right-side cover and install ROM packs or
change switch settings. While doing this, do not touch any components on the
printed-circuit board, otherwise components may be damaged and modules may fail
to work.
Do not use unused terminals:
- Do not connect wires to unused terminals on a terminal block or in a connector.
Doing so may adversely affect the functions of the module.

vii
IM 34M06H62-02E 3rd Edition : Jul.16, 2015-00
Use the following power source:
- Use only F3PU- as the power supply module.
- If using this product as a UL-approved product, for the external power supply, use a
limited voltage / current circuit power source or a Class 2 power source.
Refer to the user's manual before connecting wires:
- Refer to the “Hardware Manual” (IM 34M06C11-01E) or the applicable user’s
manual for the external wiring drawing.
- Refer to “A3.6.5 Connecting Output Devices” in the “Hardware Manual” before
connecting the wiring for the output signal.
- Refer to “A3.5.4 Grounding Procedure” in the “Hardware Manual” for attaching the
grounding wiring.
Authorized Representative:
- The Authorized Representative for this product in the EEA is:
Yokogawa Europe B. V.
Euroweg 2, 3825 HD Amersfoort, The Netherlands


viii
IM 34M06H62-02E 3rd Edition : Jul.16, 2015-00
How to dispose the batteries
This is an explanation about the new EU Battery Directive. This directive is only valid in
the EU.
Batteries are included in some modules of this product. The procedure is different when
the user can remove or cannot remove.
Batteries the user can remove
The battery of F3RP6can be removed by yourself.
When you remove the battery from F3RP6and dispose it, discard them in accordance
with domestic law concerning disposal. See the User's Manual of F3RP6for the
removal procedure. Take a right action on waste batteries, because the collection
system in the EU on waste batteries are regulated. If you don't remove the battery from
this product, please see .
Batteries the user cannot remove
Dispose the battery together with this product.
When you dispose this product in the EU, contact your local Yokogawa Europe
B.V.office.
Do not dispose them as domestic household waste.
Battery category: Lithium battery
Note: With reference to Annex II of the new Battery Directive 2006/66/EC, the above
symbol indicates obligatory separate collection.

ix
IM 34M06H62-02E 3rd Edition : Jul.16, 2015-00
Introduction
Overview of the Manual
This instruction manual describes the specifications, functions and use of the
Temperature Control and PID Module. The information is especially useful when you
are performing pre-operation engineering.
ToolBox for Temperature Control and PID Modules
A dedicated ToolBox software is provided for this module. With this software, you can
easily set up various parameters of the module, as well as perform action tests, tuning
and monitoring by following screen instructions. For details, see the “ToolBox for
Temperature Control and Monitoring Modules User’s Manual” (IM34M06Q31-02E).
Notation
References to chapters and sections are denoted by the chapter or section number,
followed by the chapter or section title enclosed within double-quotation marks.
Relay names and register names are shown with Initial caps.
States or setting values are enclosed within double quotation marks, or displayed with
initial caps.
Other User’s Manuals
Read the following manuals, as required.
For information on the specifications, configuration*, installation,
wiring, trial operation, maintenance and inspection of the e-RT3, as well
as information on the system-wide limitation of module installation,
refer to:
- Hardware Manual (IM 34M06C11-01E).
*: For information on the specifications of products other than the power supply module, base module, I/O module, cable
and terminal block unit, refer to their respective user’s manuals.

x
IM 34M06H62-02E 3rd Edition : Jul.16, 2015-00
Copyrights and Trademarks
Copyrights
The copyright of the programs and online manuals contained in the software medium of
the Software Product shall remain in YOKOGAWA.
You are allowed to print the required pages of the online manuals for the purposes of
using or operating the Product; however, reprinting or reproducing the entire document
is strictly prohibited by the Copyright Law.
Except as stated above, no part of the online manuals may be reproduced, transferred,
sold, or distributed to a third party in any manner (either in electronic or written form
including, without limitation, in the forms of paper documents, electronic media, and
transmission via the network). Nor it may be registered or recorded in the media such as
films without permission.
Trademarks
The trade names and company names referred to in this manual are either trademarks
or registered trademarks of their respective companies.

TOC-1
IM 34M06H62-02E 3rd Edition : Jul.16, 2015-00
CONTENTS
Applicable Product....................................................................................i
Important...................................................................................................ii
Introduction..............................................................................................ix
Copyrights and Trademarks ....................................................................x
PART-A Function Overview
A1 Overview ....................................................................................A1-1
A2 Specifications.............................................................................A2-1
A2.1 Model and Suffix Codes........................................................................A2-1
A2.2 Compatibility with CPU Modules ........................................................A2-1
A2.3 General Specifications..........................................................................A2-2
A2.4 Input Specifications ..............................................................................A2-2
A2.5 Output Specifications...........................................................................A2-7
A2.6 Backup Function ...................................................................................A2-7
A2.7 Function Specifications........................................................................A2-8
A2.8 Components and Functions...............................................................A2-10
A2.9 External Dimensions...........................................................................A2-11
A3 Startup Procedure......................................................................A3-1
A4 Hardware Preparation................................................................A4-1
A4.1 Selecting Input Types and Power Frequency.....................................A4-2
A4.2 Attaching/Detaching Modules..............................................................A4-6
A4.3 Wiring .....................................................................................................A4-8
A4.3.1 Wiring Precautions ..................................................................A4-8
A4.3.2 Terminal Wiring Diagram .......................................................A4-10
PART-B Parameter Description
B1 Accessing the Module ..............................................................B1-1
B1.1 Accessing Using Sequence Instructions............................................B1-2
B1.2 Accessing Using BASIC.......................................................................B1-5
B1.3 Writing and Reading after Powering On .............................................B1-6
B2 Types of Relays and Registers..................................................B2-1
B2.1 Types of Relays .....................................................................................B2-1
B2.2 Types of Registers ................................................................................B2-2
IM 34M06H62-02E 3rd Edition
Temperature Control and PID Module

TOC-2
IM 34M06H62-02E 3rd Edition : Jul.16, 2015-00
B2.2.1 Common Process Data ...........................................................B2-4
B2.2.2 Analog Output Settings ...........................................................B2-5
B2.2.3 Setup Control Parameters .......................................................B2-6
B2.2.4 SP Backup Parameters............................................................B2-7
B2.2.5 Function Control Parameters ..................................................B2-7
B2.2.6 EEPROM Write Counter..........................................................B2-7
B2.2.7 Controller Parameters .............................................................B2-8
B2.2.8 Process Data..........................................................................B2-10
B2.2.9 Operation Control Parameters ..............................................B2-12
B2.2.10 I/O Parameters.......................................................................B2-13
B2.2.11 Operation Parameters ...........................................................B2-15
B2.3 How to Enable Settings ......................................................................B2-22
B2.4 How to Back up SP Values to EEPROM............................................B2-33
B2.5 Initializing All Settings........................................................................B2-33
B3 Setup and Operation..................................................................B3-1
B3.1 Setting Controller Parameters .............................................................B3-2
B3.1.1 Power Frequency Selection ....................................................B3-2
B3.1.2 Input Sampling Period .............................................................B3-2
B3.1.3 Controller Mode........................................................................B3-3
B3.1.4 Setting Output Terminals..........................................................B3-5
B3.1.5 Sample Program for Setting Controller Parameters ...............B3-6
B3.2 Setting I/O Parameters..........................................................................B3-8
B3.2.1 Input Type Selection ...............................................................B3-8
B3.2.2 Control Type Selection ............................................................B3-8
B3.2.3 Sample Program for Setting I/O Parameters...........................B3-9
B3.3 Setting Operation Parameters............................................................B3-12
B3.3.1 Preparing for Dynamic Auto-tuning........................................B3-12
B3.3.2 Preparing for PID Control ......................................................B3-14
B3.3.3 Sample Program for Setting Operation Parameters..............B3-16
B3.4 Operation..............................................................................................B3-18
B4 Sample Program.........................................................................B4-1
PART-C Function Description
C1 Controller Mode .........................................................................C1-1
C1.1 Single Loop............................................................................................C1-1
C1.2 Cascade Control ...................................................................................C1-4
A1.2.1 Cascade Control Operation ....................................................C1-6
C1.3 Two-input Changeover Control............................................................C1-8
C1.4 Disabled Mode.....................................................................................C1-11
C2 Output-related Functions ..........................................................C2-1
C2.1 Control Type Selection..........................................................................C2-5
C2.2 Output Type Selection ..........................................................................C2-5
C2.3 Output Terminal Selection....................................................................C2-6

TOC-3
IM 34M06H62-02E 3rd Edition : Jul.16, 2015-00
C2.4 Control Types and their Operations....................................................C2-7
C2.4.1 ON/OFF Control Output ..........................................................C2-7
C2.4.2 PID Control Output ..................................................................C2-9
C2.4.3 Heating/Cooling PID Control..................................................C2-13
C2.4.4 Heating/Cooling ON/OFF Control .........................................C2-21
C2.5 Analog Output......................................................................................C2-23
C2.6 External Output....................................................................................C2-24
C3 PV-related Functions .................................................................C3-1
C3.1 Input Type Selection..............................................................................C3-4
C3.2 Power Frequency Selection ................................................................C3-7
C3.3 Input Range Setting ..............................................................................C3-8
C3.4 PV Range Setting (for use in two-input changeover mode only).....C3-9
C3.5 Burnout Detection ..............................................................................C3-10
C3.6 Reference Junction Compensation...................................................C3-11
C3.7 Broken-line Biasing.............................................................................C3-12
C3.8 Fixed Biasing.......................................................................................C3-13
C3.9 Square Root Extraction ......................................................................C3-14
C3.10 Input Filtering.......................................................................................C3-15
C3.11 Two-input Changeover
(for use in two-input changeover mode only).................................C3-16
C3.12 External Input.......................................................................................C3-18
C4 SP-Related Functions................................................................C4-1
C4.1 Set Point (SP).........................................................................................C4-2
C4.2 Remote Set Point...................................................................................C4-3
C4.3 Limiting the Set Point ...........................................................................C4-4
C4.4 Setting SP Gradient...............................................................................C4-5
C4.5 PV Tracking............................................................................................C4-7
C4.6 SP Tracking............................................................................................C4-8
C5 Auto-Tuning Function................................................................C5-1
C5.1 Dynamic Auto-tuning............................................................................C5-1
C5.2 Auto-tuning............................................................................................C5-3
C5.2.1 Tuning Points and Stored PID Number ...................................C5-5
C6 Control and Computation Function..........................................C6-1
C6.1 Forward Operation and Reverse Operation........................................C6-1
C6.2 Proportional Band.................................................................................C6-2
C6.3 Integral Time and Manual Reset Values..............................................C6-4
C6.4 Derivative Time......................................................................................C6-6
C6.5 Manual Adjustment PID Constants......................................................C6-8
C6.6 PID Control Mode ..................................................................................C6-9
C6.7 "Super" Overshooting Suppression Function.................................C6-11
C6.8 Anti-reset Windup................................................................................C6-12
C6.9 PID Selection Method
(SP Number Selection, Zone PID Selection)....................................C6-13

TOC-4
IM 34M06H62-02E 3rd Edition : Jul.16, 2015-00
C6.9.1 SP Number Selection ............................................................C6-14
C6.9.2 Zone PID Selection................................................................C6-15
C7 Operation Control.......................................................................C7-1
C7.1 Run/Stop Switch....................................................................................C7-1
C7.1.1 Operation after Switching from Stop Mode to Run Mode........C7-2
C7.2 Automatic/Manual Switch.....................................................................C7-4
C7.2.1 Operation after Switching from Manual Mode to Automatic
Mode........................................................................................C7-5
C7.3 Remote/Local Switch ............................................................................C7-6
C7.4 Automatic/Manual/Cascade Switch.....................................................C7-7
C7.4.1 Cascade Mode.........................................................................C7-8
C7.4.2 Automatic Mode.......................................................................C7-8
C7.4.3 Manual Mode ...........................................................................C7-9
C7.5 Preset Output Function ......................................................................C7-10
C8 Alarm Function...........................................................................C8-1
C8.1 Alarm Types ...........................................................................................C8-4
C8.2 Wait Function.........................................................................................C8-6
C8.3 Alarm Delay Timer.................................................................................C8-7
C8.4 Selecting Alarm Preset Values.............................................................C8-7
C9 Disable Backup Function ..........................................................C9-1
C10 Self-diagnosis Function...........................................................C10-1
C10.1 How to Check for Errors.....................................................................C10-2
C10.2 List of Error Statuses..........................................................................C10-2
C11 Selecting Temperature Unit.....................................................C11-1
PART-D Troubleshooting
D1 Before Performing Checks .......................................................D1-1
D2 Troubleshooting a Specific Problem ........................................D2-1
(1) Input does not change, or fluctuates excessively.............................D2-2
(2) Any LED indicator other than RDY and 60 Hz is lit or flashing ........D2-3
(3) The loop is out of control (with an oscillating response) .................D2-4
(4) Output does not respond to or follow a changed set point value....D2-5
(5) Excessive overshooting.......................................................................D2-5
(6) Settings are not enabled.......................................................................D2-5
PART-E Relays and Registers
E1 List of Registers ........................................................................E1-1
E2 List of Relays..............................................................................E2-1
Index..........................................................................................................Index-1
Revision Information..........................................................................................xi

TOC A-1
IM 34M06H62-02E 3rd Edition : Jul.16
,
2015-00
PART-A provides an overview of the module functions.
A1. Overview
A2. Specifications
A2.1 Model and Suffix Codes
A2.2 Compatibility with CPU Modules
A2.3 General Specifications
A2.4 Input Specifications
A2.5 Output Specifications
A2.6 Backup Function
A2.7 Function Specifications
A2.8 Components and Functions
A2.9 External Dimensions
A3. Startup Procedure
A4. Hardware Preparation
A4.1 Selecting Input Types and Power Supply Frequency
A4.2 Attaching/Detaching Modules
A4.3 Wiring
Temperature Control and PID Module
PART-A Function Overview
IM 34M06H62-02E 3rd Edition

Blank Page

A1-1
IM 34M06H62-02E 3rd Edition : Jul.16
,
2015-00
A1. Overview
The temperature control and PID module (hereafter called “the module”) is an I/O
module to be mounted on the FA-M3 base unit. The module is provided with
multiple input and output circuits and performs multiple PID control functions.
Figure A1.1 shows a schematic diagram of a system containing the module.
Thermocouple/RTD/Signal Converter
SSR/Relay/SCR
Figure A1.1 Schematic Diagram Showing the Relationship between Sensors, Actuators,
Temperature Control and PID Module and CPU Module
The module is provided with four controller functions and one setup and control
interface for the controller functions for controlling four loops. The controller
functions can be configured to act inter-dependently or independently to support a
wide variety of applications.
Three controller modes are available: single loop, cascade control, and two-input
changeover control. In the single loop mode (default), individual controller
functions operate independently. In the cascade or two-input changeover control
mode, two controller functions are combined to act as a single controller function.
(1) Single Loop (2) Cascade Control (3) Two-input Changeover Control
Figure A1.2 Controller Modes
Controller mode, instrument ranges, set points and other parameter values
required for module operation can be stored in the module to simplify operation
setup at each module startup. A program will then only need to run/stop operation
and switch between set points from the CPU module to achieve operation.

A1-2
IM 34M06H62-02E 3rd Edition : Jul.16
,
2015-00
Features
- High accuracy, high resolution, high speed
The input sampling period for four loops is 200 ms. The sampling period may be set
to 100 ms if only two loops are used. The input conversion accuracy is 0.1% of full
scale, and the input resolution is 0.1C (using 5-digit representation). Low-resolution
operation (using 4-digit representation) is also available.
- Universal input
The input type may be set to thermocouple, RTD, or DC voltage for each loop.
- Dynamic auto-tuning
In the dynamic auto-tuning mode, what you have to do before starting operation is to
simply set the input type, output type, and set point. The dynamic auto-tuning
function automatically determines and tunes the PID parameters during operation.
You may disable the function, where appropriate.
Main Differences between F3CU04-N and F3CU04-S
With the F3CU04-S module, a specific SP backup procedure needs to be executed to
store set points to the EEPROM. Otherwise, set points are not stored to the EEPROM
when updated.
With the F3CU04-N module, however, set points are always stored automatically when
updated. This approach of storing set points unconditionally regardless of whether it is
required by an application allows for easier programming and operation, but may
damage the EEPROM storage media in an application where set points are constantly
updated.