🗊Презентация Multivariable process control system

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Слайд 1


Before the lecture
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Before the lecture

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Multivariable Process Control System (Flow, Level, Temperature, Pressure) Volume 1/2
Описание слайда:
Multivariable Process Control System (Flow, Level, Temperature, Pressure) Volume 1/2

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Plan Part 1. Introduction to FLTP Part 2. Main Units of the trainer Part 3. Control Units Part 4. Control Techniques Part 5. Conclusion Part 6 Self-Test (No cheating) Part 7. Lab work
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Plan Part 1. Introduction to FLTP Part 2. Main Units of the trainer Part 3. Control Units Part 4. Control Techniques Part 5. Conclusion Part 6 Self-Test (No cheating) Part 7. Lab work

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Introduction How do we control the tank in the field without the manual control? Do we often open the tank and measure the flow rates, Pressures and fluid level by hand in winter ? We are tired by doing so. Let’s overcome the problem.
Описание слайда:
Introduction How do we control the tank in the field without the manual control? Do we often open the tank and measure the flow rates, Pressures and fluid level by hand in winter ? We are tired by doing so. Let’s overcome the problem.

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Introduction It is difficult to control the liquid vessel manually because it is time consuming and requires too much physical work
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Introduction It is difficult to control the liquid vessel manually because it is time consuming and requires too much physical work

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Introduction (Cont’d) Therefore, the Process Control System is helpful by controlling the unit parameters even at a high distance automatically.
Описание слайда:
Introduction (Cont’d) Therefore, the Process Control System is helpful by controlling the unit parameters even at a high distance automatically.

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Introduction Cont’d Multivariable Process Control System can control the flow rate, level, Pressure and Temperature of the fluid inside the vessel
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Introduction Cont’d Multivariable Process Control System can control the flow rate, level, Pressure and Temperature of the fluid inside the vessel

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Multivariable process control system, слайд №8
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1) Main Units of the trainer FLTP 1)Power supply unit mod. FLTP-A/EV 2) Module for temperature control mod. FLTP-B/EV 3) Module for level and flow-rate control mod. FLTP-C/EV 4) Module for pressure control mod. FLTP-D/EV 5) Process units mod. FLTP-U/EV
Описание слайда:
1) Main Units of the trainer FLTP 1)Power supply unit mod. FLTP-A/EV 2) Module for temperature control mod. FLTP-B/EV 3) Module for level and flow-rate control mod. FLTP-C/EV 4) Module for pressure control mod. FLTP-D/EV 5) Process units mod. FLTP-U/EV

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1.1 Power Supply Unit (FLTP-A/EV) Consists of 5 windows 1st window has 4 potentiometers of the process variables (Level, Flow rate, Temperature and Pressure) 2nd 3rd and 4th windows are the switches of the other units (Temperature, Level and Pressure). 5th window works with the pump
Описание слайда:
1.1 Power Supply Unit (FLTP-A/EV) Consists of 5 windows 1st window has 4 potentiometers of the process variables (Level, Flow rate, Temperature and Pressure) 2nd 3rd and 4th windows are the switches of the other units (Temperature, Level and Pressure). 5th window works with the pump

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1.2 Module for temperature control mod. FLTP-B/EV Has Conditioner on the left side Has Amplifier on the right side Temperature unit requires these voltages: -12V; 0V; +12V and 48V
Описание слайда:
1.2 Module for temperature control mod. FLTP-B/EV Has Conditioner on the left side Has Amplifier on the right side Temperature unit requires these voltages: -12V; 0V; +12V and 48V

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Question Which kind of thermocouples do you know?
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Question Which kind of thermocouples do you know?

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http://digital.ni.com/public.nsf/allkb/29FC44A9C662D80186256B02008387CF For FLTP Conditioner Thermocouple J STT – Smart Temp. Transmitter NTC – Negative Temperature Coefficient Thermistor Pt100 with more accuracy
Описание слайда:
http://digital.ni.com/public.nsf/allkb/29FC44A9C662D80186256B02008387CF For FLTP Conditioner Thermocouple J STT – Smart Temp. Transmitter NTC – Negative Temperature Coefficient Thermistor Pt100 with more accuracy

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1.2.1 Module for temperature control mod. FLTP-B/EV Has Conditioner on the left side and deals with thermocouples. Conditioner has 5 inputs and 1 output
Описание слайда:
1.2.1 Module for temperature control mod. FLTP-B/EV Has Conditioner on the left side and deals with thermocouples. Conditioner has 5 inputs and 1 output

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Question. What is amplifier?
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Question. What is amplifier?

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1.2.2 Amplifier (Brief explanation) Amplifier – modulates the output stronger than input signal For example: Input voltage is 3V and output is 5V after amplification Has 1 input and 1 output signal to the heating resistor
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1.2.2 Amplifier (Brief explanation) Amplifier – modulates the output stronger than input signal For example: Input voltage is 3V and output is 5V after amplification Has 1 input and 1 output signal to the heating resistor

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1.3. Flow Rate- Level Control (FLTP-C/EV) Has 2 conditioners, 1 amplifier and 2 controllers Flow rates deal with the top window Level measurements are at the bottom Has the voltage requirements: -12V; 0V; +12V and 48V
Описание слайда:
1.3. Flow Rate- Level Control (FLTP-C/EV) Has 2 conditioners, 1 amplifier and 2 controllers Flow rates deal with the top window Level measurements are at the bottom Has the voltage requirements: -12V; 0V; +12V and 48V

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1.3.1 Flow Rate Control Measures the flow rate with a paddle wheel Unit : l/min Has 2 inputs and 1 Output Has a switch
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1.3.1 Flow Rate Control Measures the flow rate with a paddle wheel Unit : l/min Has 2 inputs and 1 Output Has a switch

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1.3.2 Level Control Shows the level of the tank Measured with piezometric sensor
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1.3.2 Level Control Shows the level of the tank Measured with piezometric sensor

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1.4 Pressure Unit (FLTP-D/EV) Has signal conditioner and amplifier Pressure is measured in bars. Has 1 input and 1 output controlled with the PVD valve Managed with the pump
Описание слайда:
1.4 Pressure Unit (FLTP-D/EV) Has signal conditioner and amplifier Pressure is measured in bars. Has 1 input and 1 output controlled with the PVD valve Managed with the pump

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1.5. External Unit (FLTP-U/EV) Has plexiglass panel Has 3 tanks: 1) 25litres stainless steel at the bottom; 2) 5liters vertical plexiglass; 3) 1litre vertical steel tank Has a recirculation pump Manual Control Valves Water Heater with Resistor 2 Proportional Valves 2Pressure gauges On/ Off Solenoid Valve Process variable Sensors 1 glass mercury thermometer
Описание слайда:
1.5. External Unit (FLTP-U/EV) Has plexiglass panel Has 3 tanks: 1) 25litres stainless steel at the bottom; 2) 5liters vertical plexiglass; 3) 1litre vertical steel tank Has a recirculation pump Manual Control Valves Water Heater with Resistor 2 Proportional Valves 2Pressure gauges On/ Off Solenoid Valve Process variable Sensors 1 glass mercury thermometer

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1.5. External Unit (FLTP-U/EV)
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1.5. External Unit (FLTP-U/EV)

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1.5. External Unit (FLTP-U/EV)
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1.5. External Unit (FLTP-U/EV)

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1.5. External Unit (FLTP-U/EV)
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1.5. External Unit (FLTP-U/EV)

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1.5. External Unit (FLTP-U/EV)
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1.5. External Unit (FLTP-U/EV)

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1.5. External Unit (FLTP-U/EV)
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1.5. External Unit (FLTP-U/EV)

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1.5. External Unit (FLTP-U/EV)
Описание слайда:
1.5. External Unit (FLTP-U/EV)

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Paddle wheel flow measurement Has a magnet in one of the paddles Hall effect is represented by magnetic vibration as the wheel rotates quickly Q = Number of pulse(litre)/ time(sec)
Описание слайда:
Paddle wheel flow measurement Has a magnet in one of the paddles Hall effect is represented by magnetic vibration as the wheel rotates quickly Q = Number of pulse(litre)/ time(sec)

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1.5. External Unit (FLTP-U/EV)
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1.5. External Unit (FLTP-U/EV)

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1.5. External Unit (FLTP-U/EV)
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1.5. External Unit (FLTP-U/EV)

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1.5. External Unit (FLTP-U/EV)
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1.5. External Unit (FLTP-U/EV)

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Multivariable process control system, слайд №32
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Valves Positive crankcase ventilation (PVC) is used to limit the pressure or flow rate PVD Power valve Double acting Solenoid Valve
Описание слайда:
Valves Positive crankcase ventilation (PVC) is used to limit the pressure or flow rate PVD Power valve Double acting Solenoid Valve

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1.5 Work Principle of External Unit. Liquid is kept in the metal vessel pump injects the liquid from vessel into the plexiglass tank through lines. Liquid Pressures, flow rates and level are measured when the pump works Heater warms up the liquid Temperatures are measured with thermal snesors on the metal vessel Valves help control the pressures and flow rates
Описание слайда:
1.5 Work Principle of External Unit. Liquid is kept in the metal vessel pump injects the liquid from vessel into the plexiglass tank through lines. Liquid Pressures, flow rates and level are measured when the pump works Heater warms up the liquid Temperatures are measured with thermal snesors on the metal vessel Valves help control the pressures and flow rates

Слайд 35


2. Control Units PLC Trainer Industrial PID Control Card
Описание слайда:
2. Control Units PLC Trainer Industrial PID Control Card

Слайд 36


2.1 PLC Trainer (PLC-5A/EV) Учебная панель Has 16 digital inputs 14 digital outputs 4 Analog Inputs 1 Analog Output Connects to the touch screen
Описание слайда:
2.1 PLC Trainer (PLC-5A/EV) Учебная панель Has 16 digital inputs 14 digital outputs 4 Analog Inputs 1 Analog Output Connects to the touch screen

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2.2 PID Controller Has inputs Outputs
Описание слайда:
2.2 PID Controller Has inputs Outputs

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Control Card (MFI-U/EV) Has 8Digital Inputs; 8Digital Outputs 16 Analog inputs 2 Analog Outputs
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Control Card (MFI-U/EV) Has 8Digital Inputs; 8Digital Outputs 16 Analog inputs 2 Analog Outputs

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3 Control Techniques
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3 Control Techniques

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Question. Is it open loop or closed loop control?
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Question. Is it open loop or closed loop control?

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Answer: It is closed loop control because of PID Control and feedback
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Answer: It is closed loop control because of PID Control and feedback

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Open Loop Control
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Open Loop Control

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Question What are the transducers?
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Question What are the transducers?

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3 Transducers Converter from physical variable to the electrical variable. Example: Pressure at 4 bars is converted to voltage at 7 Volts The transducer shows mostly the linear function Cannot be formed without the conditioner
Описание слайда:
3 Transducers Converter from physical variable to the electrical variable. Example: Pressure at 4 bars is converted to voltage at 7 Volts The transducer shows mostly the linear function Cannot be formed without the conditioner

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Question What is the Conditioner?
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Question What is the Conditioner?

Слайд 46


Conditioner Converter from undesirable electrical variable into suitable electrical variable Always comes with transducer
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Conditioner Converter from undesirable electrical variable into suitable electrical variable Always comes with transducer

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Temperature Control
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Temperature Control

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Pressure Control
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Pressure Control

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Summary Process Control System requires the control techniques, such as Amplifier, Conditioner, transducer and Heater or pump in the lab Without the Conditioner, transducer does not work Circulated control system makes closed loop control with PID technique, while open loop control misses PID control
Описание слайда:
Summary Process Control System requires the control techniques, such as Amplifier, Conditioner, transducer and Heater or pump in the lab Without the Conditioner, transducer does not work Circulated control system makes closed loop control with PID technique, while open loop control misses PID control

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