LG Electronics K7F-PIDA, K4F-PIDA manual PID Control Action

Page 11

Chapter 2. SPECIFICATIONS

2.4 PID Control Action

2.4.1Processing type

1)Velocity type

Velocity type is a processing that in PID processing, the present Manipulated Value(MV) is obtained by adding the calculated variation of MV (∆ MV) to the previous MV

 

MVn =

MVn-1+ ∆ MVn

MVn

:

Present Manipulated Value

MVn-1

:

Previous Manipulated Value

∆ MVn :

Variation of the Previous Manipulated Value

 

 

 

2)Measured Value Derivative Type (Pre-derivative)

Measured value derivative processing, in PID processing, uses the process value(PV) for the derivative term. Generally, PID processing, when a deviation occurs, operates toward the direction in which the deviation will be reduced.

The deviation occurs due to alteration of set value(SV) or outside disturbances. Therefore, if the deviation is used in the derivative processing, the output of the derivative term changes rapidly when the deviation occur due to alteration of set value (SV). So, to prevent raid changes like that, this processing uses the process value(PV) for the derivative term.

MVn

MVn

MVn-1

∆MVn

En

En-1

Kp

Ki

Kd

S

PVn

PVn-1

PVn-2

= MVn-1+ Kp ✕ (En− En-1) + Kp✕ S/KI ✕ En

+ Kp✕ Kd/S✕ (2PVn − PVn-1− PVn-2)

:Present Manipulated Value

:Previous Manipulated Value

:Variation of the Previous Manipulated Value

:Present Deviation

:Previous Deviation

:Proportional Constant

:Integral Constant

:Derivative Constant

:Control Cycle (100ms)

:Present Process Quantity (Present Value)

:One-step previous Process Quantity (Present Value)

:Two-step previous Process Quantity (Present Value)

2 - 4

Page 10 Page 12
Image 11
Page 10 Page 12
Contents User’s Manual Contents Functions of Buffer Memory Buffer Memory Configuration and FunctionsProgramming TroubleshootingDimensions Safety Precautions Waste Disposal Precautions Introduction IntroductionGeneral specifications SpecificationsGeneral Specifications SpecificationsTable .2 Performance Specifications Performance SpecificationsItems 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 Action+ K p S/K I E n Derivative constant Control cycle 100 ms Specifications PID ActionIntegral constant Forward and reverse action with MV, PV and SV Specifications Forward/Reverse ActionsInstallation InstallationInstallation Ambience Handling PrecautionsBuffer Memory Configuration and Functions Buffer Memory Configuration and FunctionsBuffer memory Configuration 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 Descriptions of the Program Initial SettingsApplication Programming 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 Troubleshooting Procedure TroubleshootingErrors Indicated by RUN LED Flickering PID Control Module Hardware Defect Run LED of enabled Loops Off Is RUN LED turned OFF?Dimensions DimensionsK7F-PIDA Dimensions K4F-PIDA Dimensions

K4F-PIDA, K7F-PIDA specifications

LG Electronics has consistently been at the forefront of innovation in consumer electronics, and among its impressive lineup are the K7F-PIDA and K4F-PIDA models. These devices showcase the brand's commitment to quality, functionality, and user-centric design, making them compelling choices for both casual users and tech enthusiasts alike.

The LG K7F-PIDA is designed with a sleek aesthetic, combining style and practicality. At its core, the device features a vibrant display that brings content to life with vivid colors and sharp details. The screen is not only large but also offers a high resolution, ensuring that videos and images are crisp and engaging. This model is equipped with advanced processing capabilities, enabling seamless multitasking and efficient app performance. Powered by a competent chipset, it handles demanding tasks with ease, making it suitable for everything from gaming to streaming.

One of the standout features of the K7F-PIDA is its enhanced camera system. It includes a high-resolution primary camera, perfect for capturing stunning photographs and videos, complemented by advanced image processing technology that optimizes picture quality in various lighting conditions. The front-facing camera also boasts features designed for selfies, making it appealing for social media enthusiasts.

On the other hand, the LG K4F-PIDA offers a more compact form factor without compromising on essential features. Its lightweight design and manageable size make it an excellent choice for users who prefer portability. The K4F-PIDA is furnished with a user-friendly interface that simplifies navigation, allowing even non-tech-savvy individuals to enjoy its functionalities easily.

In terms of connectivity, both models support the latest standards, ensuring fast and reliable internet access for browsing, streaming, and downloading. Additionally, they come with expandable storage options, allowing users to save their favorite content without worrying about running out of space.

Both the K7F-PIDA and K4F-PIDA prioritize battery efficiency, providing users with extended usage times on a single charge. The integration of energy-saving technologies ensures that users can enjoy their devices throughout the day without frequent recharging.

To summarize, the LG Electronics K7F-PIDA and K4F-PIDA stand out in the competitive market of consumer electronics thanks to their stylish designs, robust performance, and rich feature sets. With advanced cameras, efficient processing power, and user-friendly interfaces, these models cater to a wide array of user needs, making them a worthy consideration for anyone seeking a reliable and versatile device.
Top Page Image Contents