Easy engineering high reliability, Disturbance overshoot adjustment, Fine tuning – Omron Smart Process Control CJ-Series User Manual

Page 3: New algorithm further enhances control stability, Optimum tuning to suit the application, Engineering example: program control, System configuration

New Algorithm Further Enhances Control
Stability

Disturbance Overshoot Adjustment

Optimum Tuning to Suit the Application

Fine Tuning

Disturbance

Disturbance generated

Time required to
stabilize

Overshoot

Conventional PID gain adjustment

Using the Disturbance
Overshoot Adjustment function

Longer time required
to stabilize

Faster stabilization

This function restrains overshoot when a disturbance is
generated, allowing faster stabilization.

[Example]
• Temperature drops when adding objects to a furnace
• Control disturbances when retooling

Adjust PVs, SPs, and MVs while monitoring, and save
data as CSV files from the software tuning window.
Autotuning (AT) and fine-tuning functions can also be
used for automatically calculating PID constants (see note
2).

Note 1: For details on CS-series Loop Control Boards, refer to the PLC-based
Process Control Catalog (Cat. No. P051).
2: Control can be fine-tuned by automatically tuning PID parameters using
previous control parameters and three user-set requirements to execute
fuzzy logic.

CS-Process Tool Tuning Window

Sequence

program

Function

block

program

I/O memory

Parameter Area

CPU Unit

Memory

Card

Condition: Pin 7 is ON

CX-Process Tool (Software for Personal Computer)

Face Plate Auto-Builder for NS

Touch panel windows are automatically generated.

Segment program
parameter setting window

Tuning window

NT-series PT

Loop-control CPU Unit

Serial or
Ethernet
communications

Control window

TIC

Input
channel 1

Output

channel 1

Time

RSP

Temperature
input

Heater output

Loop-control CPU Unit

RSP

Analog Output
Field Terminal

Analog Input
Field Terminal

Segment
Program

Basic PID

Adjust PID and other parameters
in the tuning window.

Expansion Rack

10 Units max.

Note: CJ1G-CPU44P/45P
(CJ1G-CPU42P/43P: Expand up to 2 Racks)

Analog Input
Field Terminal

RSP

Basic PID

Split Conversion

Segment
Program 2

Analog Output
Field Terminal

Function blocks make loop-control programming easy. You can also create
CX-Process Tool tuning windows to help adjust loops. Controller faceplates
can be created automatically for touch panel displays.

Lineup includes low-cost models that use up to 50 function
blocks and models that allow up to 300 blocks designed for
large-scale systems and complicated operations.

Sequence control programs: Standardize and simplify programs using structured programming. Special I/O
Unit and CPU Bus Unit settings are easy with function blocks (using ladder programming language or
structured text).
Loop control programs: By combining function blocks, a wide array of control methods can be easily
configured, from basic PID control used by Temperature Controllers to program, cascade, and feed-forward
control. Easily display values, such as temperatures, in engineering units, allowing you to check operation.

Simple backup function enables backup, recovery, and comparison of all PLC data including the
function block programs for the Loop Control Board using the Memory Card.
Save tag settings, comments, annotations, and connection data created using the CX-Process
Tool to either a Memory Card or a Loop-control CPU Unit.

Loop control: Proven functionality of Temperature Controllers and CS-series Loop Control
Boards (see note 1) in a compact size.

Loop control: Programming with function blocks to suit the application.
System configuration: Choose and combine functions from a broad selection of I/O Units.

Engineering Example: Program Control

Analog
Input
Unit

Analog

Output

Unit

Combine function blocks and connect graphically
using the mouse.

Read data from

Analog Input

Units

Perform PID

control

Perform

heating/cooling

control

Perform program

control

Control output

from Analog

Output Unit

Process Input
Units, Analog
I/O Units, etc.

System Configuration

Expansion
Rack: 3
Racks
max.

(See note.)

Simply turn the DIP Switch ON/OFF to save or read the
user program including function blocks using the
Memory Card.

Consolidating OMRON's expertise in temperature and process control
cultivated over many years to provide you with effortless solutions
using proven algorithms.

Press the
Memory Card
power supply
switch for 3 s.

Simple backup
to Memory
Card, including
function block
data.

Note: Supported by unit version 3.0 or later.

T1 T2

T97 T98 T99 T100

TIME

Set point (SP)