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LG Electronics K7F-PIDA, K4F-PIDA manual Introduction

Models: K4F-PIDA K7F-PIDA

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Chapter 1. INTRODUCTION

Chapter 1. INTRODUCTION

These two modules are called K7F-PIDA and K4F-PIDA. The K7F-PIDA is used with the CPU of K1000S series, and the K4F-PIDA is used with the CPU of K300S series. Hereafter, the two modules will be commonly called the PID control module.

PID control means a control action that in order to keep the object at a value set beforehand (SV), it compares the SV with a sensor-measured value (PV) and when a difference between them is detected the controller makes PV come to be SV by adjusting output to eliminate the difference. The PID control is composed of combinations of Proportional (P), Integral (I) and Derivative (D) actions.

When a difference between SV and PV occurs, proportional, integral, differential quantities are calculated upon that difference and a MV(Manipulated Value) is output.

1.1Features

The features of the PID control module are as follows.

1)One module can control various processes separately and at the same time.

2)Forward/reverse action selection is available.

3)Manually manipulated out (forced to be output by the user), not operation processing output, is available.

4)The number of modules available on one base unit is unlimited.

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LG Electronics K7F-PIDA, K4F-PIDA manual Introduction

Contents

User’s Manual Contents Functions of Buffer Memory Buffer Memory Configuration and FunctionsDimensions TroubleshootingProgramming Safety Precautions Waste Disposal Precautions Introduction IntroductionGeneral specifications SpecificationsGeneral Specifications SpecificationsItems Specifications Performance SpecificationsTable .2 Performance Specifications Descriptions Names of Parts and FunctionsPID Control Action MV = Kp E Specifications Control Action Proportional Action P ActionWhen the proportional constant Kp is large Integral action at a constant deviation Specifications Integral Action I AactionWhen a long integration time is given Derivative action at a constant deviation Specifications Derivative Action D ActionIntegral constant Specifications PID Action+ K p S/K I E n Derivative constant Control cycle 100 ms Forward and reverse action with MV, PV and SV Specifications Forward/Reverse ActionsInstallation InstallationInstallation Ambience Handling PrecautionsBuffer memory Configuration Buffer Memory Configuration and FunctionsBuffer Memory Configuration and Functions Read Specifying Auto/Manual Processing K7F-PIDA Addresses 2 Functions of Buffer MemorySpecifying SET Data Enable/Disable K7F-PIDA Addresses 6 Address 10 decimal Etting PID Control DataThis area stores the MV of each loop MV output range is 0 to Read from Buffer Memory ⋅ ⋅ ⋅ GET, Getp Difference between PUT and Putp Write to Buffer Memory ⋅ ⋅ ⋅ PUT, Putp1 K7F-PIDA ProgrammingBasic Programming ProgrammingProgramming 2 K4F-PIDA Application Programming Initial SettingsDescriptions of the Program Modules and their Signal Processing Conversion Module initialization Switch RD3A Pida AD4A RTD input module Power conversion device TC K type SV 200.0 C Programming Errors Indicated by RUN LED Flickering TroubleshootingTroubleshooting Procedure PID Control Module Hardware Defect Run LED of enabled Loops Off Is RUN LED turned OFF?K7F-PIDA Dimensions DimensionsDimensions K4F-PIDA Dimensions