LG K4F-PIDA Manuel utilisateur

User’’’’ssssManual

LG Programmable Logic Controlle

K7F – PIDA

K4F – PIDA

MASTER-K

LGLG

LG Industrial Systems

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CONTENTS 

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Chapter 1. INTRODUCTION

1.1 Features



 1-1

Chapter 2. SPECIFICATIONS

2.1 General Specifications 



 2-1

2.2 Performance Specifications 



 2-2

2.3 Names of Parts and Functions 



 2-3

2.4 PID Control Action





 2-4

2.4.1 Processing Type  2-4

1) Velocity Type Processing  2-4

2) Measured Value Derivative Type (Pre-Derivative Type)  2-4

2.4.2 ControlActions  2-5

1) ProportionalAction (PAction)  2-5

2) Integral Action (IAction)  2-7

3) DerivativeAction (DAction)  2-9

4) PID Action  2-10

5) PID Processing Expression  2-10

6) Forward/ReverseActions  2-11

Chapter 3. INSTALLATION

3.1 Installation Ambience 



 3-1

3.2 Handling Precautions 



 3-1

Chapter 4. BUFFER MEMORY CONFIGURATION AND FUNCTIONS

4.1 Buffer Memory Configuration 



 4-1

4.1.1 K7F-PIDA Buffer Memory  4-1

4.1.2 K4F-PIDABuffer Memory  4-2

4.2 Functions of Buffer Memory 



 4-3

4.2.1 Specifying Loop Enable/Disable  4-3

(K7F-PIDA : addresses 0 and 1, K4F-PIDA : address 0)

4.2.2 Specifying Auto/Manual Processing  4-3

(K7F-PIDA : addresses 2 and 3, K4F-PIDA : address 1)

4.2.3 Specifying Forward/ReverseAction  4-4

(K7F-PIDA : addresses 4 and 5, K4F-PIDA : address 2)

4.2.4 Specifying SET Data Enable/Disable  4-4

(K7F-PIDA : addresses 6 and 7, K4F-PIDA : address 3)

4.2.5 Loop Run Information  4-5

(K7F-PIDA : addresses 8 and 9, K4F-PIDA : address 4)

4.2.6 Setting PID Control Data  4-5

4.2.7 Outputting Manipulated Value  4-6

(K7F-PIDA : addresses 202 and 203, K4F-PIDA : addresses 53 to 60)

4.2.8 Setting Error Information  4-6

(K7F-PIDA : addresses 203 to 265, K4F-PIDA : addresses 61 to 68)

Chapter 5. DEDICATED INSTRUCTIONS FOR SPECIAL MODULES

(

Read from/Write to Buffer Memory)

5.1 Read to Buffer Memory ...GET, GETP 



 5-1

5.2 Write to Buffer Memory ... PUT, PUTP 



 5-2

Chapter 6. PROGRAMMING

6.1 Basic Programming 



 6-1

6.1.1 K7F-PIDA  6-1

6.1.2 K4F-PIDA  6-2

6.2 Application Programming 



 6-3

6.2.1 AProgram for Controlling an Electric Furnace  6-3

(withApplying theA/D Conversion Module, PID Control Module and D/AConversion Module)

6.2.2 A Program for Control Using a RTD  6-6

(withApplying the RTD Input Module, PID Control Module and D/AConversion Module.)

6.2.3 AProgram for Control Using a Thermocouple  6-8

(withApplying the TC Input Module, PID Control Module and D/AConversion Module)

Chapter 7. TROUBLESHOOTING

7.1 Errors Indicated by RUN LED Flickering 



 7-1

7.2 Troubleshooting Procedure 



 7-1

7.2.1 RUN LED Flickering  7-1

7.2.2 RUN LED Off  7-1

7.2.3 Unreadable Processing Result of PID Control Module  7-2

7.2.4 Run LED of Enabled Loops Off  7-2

7.2.5 PID Control Module Hardware Defect  7-2

Chapter 8. DIMENSIONS

8.1 K7F-PIDA Dimensions 



 8-1

8.2 K4F-PIDA Dimensions 



 8-2

Be sure to read carefully the safety precautions given in data sheet and user’s manual before operating the module

and follow them.

The precautions explained here only apply to the K7F-PIDAand K4F-PIDA.

For safety precautions on the PLC system, see the MASTER-K200S/300S/1000S User’s Manuals.

Aprecaution is given with a hazard alert triangular symbol to call your attention, and precautions are represented as

follows according to the degree of hazard.

However, a precaution followed with can also result in serious conditions.

Both of two symbols indicate that an important content is mentioned, therefore, be sure to observe it.

Keep this manual handy for your quick reference in necessary.

AFETY PRECAUTIONS

WARNING

If not provided with proper prevention, it can cause death or fatal

injury or considerable loss of property.

CAUTION

If not properly observed, it can cause a hazard situation to result

in severe or slight injury or a loss of property.

CAUTION

Installation Precautions

Operate the PLC in the environment conditions given in the general specifications.

If operated in other environment not specified in the general specifications, it can cause

an electric shock, a fire, malfunction or damage or degradation of the module

Make sure the module fixing projections is inserted into the module fixing hole and fixed.

Improper installation of the module can cause malfunction, disorder or falling.

Test Run and Maintenance

Precautions

CAUTION

Do not separate the module from the printed circuit board(PCB), or do not remodel the mod-

ule.

They can cause disorder, malfunction, damage of the module or a fire.

When mounting or dismounting the module, perform them after the power has been turned

off.

Do not perform works while the power is applied, which can cause disorder or malfunction.

CAUTION

aste Disposal Precautions

When disposing the module, do it as an industrial waste.

Chapter 1. INTRODUCTION

1 - 1

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.

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.

1.1 Features

Chapter 2. SPECIFICATIONS

2 - 1

Chapter 2 . SPECIFICATIONS

Table 2.1 shows the general specifications of MASTER-K series.

No Items Specifications Standard

1Operating ambient

tem

erature 0 ~ 55

2Storage ambient

temperature -25 ~ 70

3Operating ambient

humidit

5 ~ 95%RH, non-condensing

4Storage ambient

humidity 5 ~ 95%RH, non-condensing

Occasional vibration

Frequency Acceleration Amplitude Sweep count

10f57 Hz - 0.075 mm

57 f150 Hz 9.8{1G} -

Continuous vibration

Frequency Acceleration Amplitude

10f57 Hz - 0.035 mm

5Vibration

57f150 Hz 4.9{0.5G} -

10 times in each

direction for

X, Y, Z

IEC 1131-2

6 Shocks *Maximum shock acceleration: 147 {15G}

*Duration time :11 ms

*Pulse wave: half sine wave pulse( 3 times in each of X, Y and Z directions ) IEC 1131-2

Square wave impulse noise 1,500 V

Electrostatic discharge Voltage :4kV(contact discharge) IEC 1131-2

IEC 801-2

Radiated electromagnetic field 27 ~ 500 MHz, 10 V/m IEC 1131-2

IEC 801-3

Severity

Level All power

modules

Digital

I/Os

( Ue

≥

24 V)

Digital I/Os

(Ue <24 V)

Analog I/Os

communication

I/Os

7 Noise immunity

Fast transient burst noise

Voltage 2 kV 1 kV 0.25 kV

IEC 1131-2

IEC 801-4

8 Operating atmosphere Free from corrosive gases and excessive dust

9 Altitude for use Up to 2,000m

10 Pollution degree 2 or lower

11 Cooling method Self-cooling

[Table 2.1 ] General specifications

REMARK

1) IEC(International Electrotechnical Commission)

: The international civilian organization which produces standards for electrical and electronics industry.

2) Pollution degree

: It indicates a standard of operating ambient pollution level.

The pollution degree 2 means the condition in which normally, only non-conductive pollution occurs.

Occasionally, however, a temporary conductivity caused by condensation shall be expected.

2.1 General Specifications

Chapter 2. SPECIFICATIONS

2 - 2

2.2 Performance Specifications

Table. 2.2 shows performance specifications of the PID control module.

Specifications

Items K7F-PIDA K4F-PIDA

Proportional constant (P)

0.01 ~ 100.00

( When integral and derivative constants are set to

0.0 sec, proportional action is applied.)

Integral constant (I)

0.0 ~ 3000.0 sec

( When integral constant is set to 0.0 sec, integral action

shall not be applied.)

Setting range

of PID

constants

Derivative constant (D)

0.0 ~ 3000.0 sec

( When derivative constant is set to 0.0 sec, derivative

action shall not be applied.)

Setting range : SV (Set Value) 0 ~ 16,000

Input range : PV (Process Value) 0 ~ 16,000

Output range : MV (Manipulated Value) 0 ~ 16,000

Setting range : M_MV

(Manually Manipulated Value) 0 ~ 16,000

RUN / STOP RUN : The run LED of corresponding loops ON

STOP : The run LED of corresponding loops OFF

LED

NORMAL/ERROR Normal : RUN LED ON

Error : RUN LED flickering

Number of PID control loops 32 loops 8 loops

Control action Forward/Reverse action control is available.

Control cycle 0.1 sec

Processing type Measured value derivative type

(Pre-derivative type)

Internal current consumption 0.3A 0.2A

Weight 370 g 190 g

[Table. 2.2 Performance Specifications]

Chapter 2. SPECIFICATIONS

2 - 3

2.3 Names of Parts and Functions

The following gives names of parts :

No. Descriptions

Loop Run LED

①It shows the PID control module run status.

!ON : The corresponding loop is running.

!OFF : The corresponding loop is running.

!Flickering : Error status. Error Value is displayed.

RUN LED

②It shows the PID module Operating status.

!ON: Normal

!Flickering : Error

K7F-PIDA K4F-PIDA

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