Modular Automatic Process Controls
Categories: Automation TechnologiesThe system enables the training of instrument technicians and users in the field of industrial process controls. In particular, it is suitable to study courses where the familiarization with the conce...
Product
Description
The system enables the training of instrument technicians and users in the field of industrial process controls. In particular, it is suitable to study courses where the familiarization with the concepts of process, regulation and stability are required. The different command and control blocks are electronic kind but appear as modules which input/output relation is important to be known. Using a frame for vertical mounting of the modules and the power supply unit, the different cards are assembled for conditioning, setting, regulation and display of signals that are connected to the studied process. This kind of mounting enables to use the system also for collective explanations and demonstrations. The main characteristics are:
• Wide range of transducers and actuators
• Many controlled processes
• Use of electronic regulators
• A/D and D/A interface for connection to Personal Computer
TRAINING PROGRAM:
• Analysis and calibration of the signal conditioners
• Detection of the characteristic curve of the transducers
• Determination of the linearity of the transducers
• Determination of the response delay of transducers and signal conditioners
• Analysis of the On/Off, three-state, proportional, integrative and derivative actions of the controller
• Detection of the transfer functions of the power amplifiers
• Determination of the time constants of the single processes
• Controller set-up according to:
- response at stability limit
- process index response
- process frequency response
• Detection of the closed-loop processes response with On/Off or Three-state controller
• Detection of the closed-loop processes response with P, P+I, P+D, P+I+D controller
• Open loop processes: comparison of the responses with closed-loop processes
• Comparison of the sensitivity to the open-loop and closed loop load variations
• Detection of the permanent state error and the processes, according to the used controller
• Detection of the transient state behavior of the processes, according to the controller time constants
TECHNICAL SPECIFICATIONS:
The system is considered in the different subdivisions of group of modules and components, so to enable the users to configure the equipment according to their needs.
Basic system
It provides the essential units to carry out the process control and is common to all the analyzed processes. Besides the power supplies and the module-holder frame, it includes the module to provide the SET-POINT signal to the process, the P.I.D. controller module for the proportional, derivative and integrative actions, the module for ON/OFF control with 2- or 3-position module and display module for the analog signals via
LED diode bars.
It consists of:
• Module-holder frame
• Power supply: 115/230 Vac ±10%, 50/60 Hz; outputs: ±12 Vdc/0.5A, 24 Vac/5A, +5 Vdc/2A, 30 Vdc/5A
• Analog set-point module SP-1
• P.I.D. controller module PC-1
• 2 and 3-position controller module PC-2
• Voltage indicator module
Temperature process
The process unit includes the thermal actuators consisting in a double resistor and a fan and three different kinds of usable industrial temperature
transducers (PTC, RTD and thermocouple).
Beside the basic modules of the system, there is the power amplifier module for heating and cooling actuators and the conditioning modules of the signals provided by the three kinds of usable sensors.
The system includes:
• Process unit
• Amplifier module
• Signal conditioner module
• Signal conditioner module
• Signal conditioner module for thermocouple
Level and flow process
The process unit consists of a tank with pump to provide the liquid necessary to reach and keep the level. The actuator consists of a proportional valve while the level transducer consists in a pressure sensor set at the bottom of the process tank. A windmill flowmeter with a manual throttle valve set in series on the delivery pipe enables to carry out flow measurements.
Beside the basic modules of the system, there is the power amplifier module for the level and flow actuators and the conditioning modules of the
signals provided by the two level and flow transducers.
The system includes:
• Process unit
• Amplifier module
• Signal conditioner module for level transducer
• Signal conditioner module for flow transducer
Pressure process
The process unit consists of a tank and a compressor activated by an electrical motor providing the air necessary to reach and keep the pressure. The actuator consists of a proportional valve and the pressure transducer is piezoresistive.
Besides the basic modules of the system, there is also a power amplifier for the pressure unit and the conditioning modules of the signals for the pressure transducer.
The system includes:
• Process unit
• Amplifier module
• Signal conditioner module for pressure transducer
Angular speed process
The process unit consists of a bidirectional permanent magnets d.c. motor. A tachogenerator and an incremental encoder of optical kind – which are the transducers - are splined on the axis. The actuator consists of a DC motor.
Beside the basic modules of the system, there is the power amplifier module for the angular speed and the conditioning modules of the signals for the speed and angular position sensors.
The system includes:
• Process unit
• Amplifier module
• Signal conditioner module for tacho-generator
• Signal conditioner module for feedback reaction
• Signal conditioner module for photoelectric speed transducer
Linear position process
The microprocessor position control drives the motion of a single-axis translator by reading from bidirectional incremental encoder. The microprocessor controller is the processing unit of the position control and is complete with display and keyboard for data insertion and display. A D/A converter module is used to control the analog section of the position control while a second module enables the display of the logic state of the
output lines of the microprocessor controller. There are also the conditioning modules for the speed and position sensors.
Beside the base modules, the system includes:
• Process unit
• Amplifier module
• Microprocessor digital control module
• Display and keyboard for module
• 12-bit D/A converter module
• 8-bit I/O module
• Signal conditioner module for tachogenerator
• Signal conditioner module for incremental encoder
Luminosity process
The process unit consists of a dark chamber where the actuator of the light processing is inserted which consists of an incandescent lamp and three semiconductor luminosity transducer devices.
Beside the basic modules of the system, there is the power amplifier module for the luminosity unit and the conditioning modules of the signals for the sensors.
The system includes:
• Process unit
• Amplifier module
• Signal conditioner module for photoresistor
• Signal conditioner module for photodiode
• Signal conditioner module for phototransistor
Force transducer
The system consists of a strain gauge load cell and a conditioning module for the generated signal.
Beside the module-holder frame and the power supply, the system includes:
• Force transduction unit
• Signal conditioner module for load cell
Linear shift transducer
The system consists of an L.V.D.T. (Linear Variable Differential Transformer) and potentiometric position tranducer and the conditioning modules of
the generated signals.
Beside the moduleholder frame and the power supply, the system includes:
• Position transduction unit
• Signal conditioner module for L.V.D.T.
• Signal conditioner module for linear potentiometer
Proximity sensors
The system consists of a linear inductive proximity sensor, an ON/OFF inductive sensor and an ON/OFF capacitive sensor and the conditioning modules for the generated signals.
Beside the module-holder frame and the power supply, the system includes:
• Proximity transduction unit
• Signal conditioner module for linear inductive sensor
• Signal conditioner module for On-Off inductive sensor
• Signal conditioner mod. for On-Off capacitive sensor
quick overview :
The system enables the training of instrument technicians and users in the field of industrial process controls. In particular, it is suitable to study courses where the familiarization with the concepts of process, regulation and stability are required. The different command and control blocks are electronic kind but appear as modules which input/output relation is important to be known. Using a frame for vertical mounting of the modules and the power supply unit, the different cards are assembled for conditioning, setting, regulation and display of signals that are connected to the studied process. This kind of mounting enables to use the system also for collective explanations and demonstrations. The main characteristics are:
• Wide range of transducers and actuators
• Many controlled processes
• Use of electronic regulators
• A/D and D/A interface for connection to Personal Computer
TRAINING PROGRAM:
• Analysis and calibration of the signal conditioners
• Detection of the characteristic curve of the transducers
• Determination of the linearity of the transducers
• Determination of the response delay of transducers and signal conditioners
• Analysis of the On/Off, three-state, proportional, integrative and derivative actions of the controller
• Detection of the transfer functions of the power amplifiers
• Determination of the time constants of the single processes
• Controller set-up according to:
- response at stability limit
- process index response
- process frequency response
• Detection of the closed-loop processes response with On/Off or Three-state controller
• Detection of the closed-loop processes response with P, P+I, P+D, P+I+D controller
• Open loop processes: comparison of the responses with closed-loop processes
• Comparison of the sensitivity to the open-loop and closed loop load variations
• Detection of the permanent state error and the processes, according to the used controller
• Detection of the transient state behavior of the processes, according to the controller time constants
TECHNICAL SPECIFICATIONS:
The system is considered in the different subdivisions of group of modules and components, so to enable the users to configure the equipment according to their needs.
Basic system
It provides the essential units to carry out the process control and is common to all the analyzed processes. Besides the power supplies and the module-holder frame, it includes the module to provide the SET-POINT signal to the process, the P.I.D. controller module for the proportional, derivative and integrative actions, the module for ON/OFF control with 2- or 3-position module and display module for the analog signals via
LED diode bars.
It consists of:
• Module-holder frame
• Power supply: 115/230 Vac ±10%, 50/60 Hz; outputs: ±12 Vdc/0.5A, 24 Vac/5A, +5 Vdc/2A, 30 Vdc/5A
• Analog set-point module SP-1
• P.I.D. controller module PC-1
• 2 and 3-position controller module PC-2
• Voltage indicator module
Temperature process
The process unit includes the thermal actuators consisting in a double resistor and a fan and three different kinds of usable industrial temperature
transducers (PTC, RTD and thermocouple).
Beside the basic modules of the system, there is the power amplifier module for heating and cooling actuators and the conditioning modules of the signals provided by the three kinds of usable sensors.
The system includes:
• Process unit
• Amplifier module
• Signal conditioner module
• Signal conditioner module
• Signal conditioner module for thermocouple
Level and flow process
The process unit consists of a tank with pump to provide the liquid necessary to reach and keep the level. The actuator consists of a proportional valve while the level transducer consists in a pressure sensor set at the bottom of the process tank. A windmill flowmeter with a manual throttle valve set in series on the delivery pipe enables to carry out flow measurements.
Beside the basic modules of the system, there is the power amplifier module for the level and flow actuators and the conditioning modules of the
signals provided by the two level and flow transducers.
The system includes:
• Process unit
• Amplifier module
• Signal conditioner module for level transducer
• Signal conditioner module for flow transducer
Pressure process
The process unit consists of a tank and a compressor activated by an electrical motor providing the air necessary to reach and keep the pressure. The actuator consists of a proportional valve and the pressure transducer is piezoresistive.
Besides the basic modules of the system, there is also a power amplifier for the pressure unit and the conditioning modules of the signals for the pressure transducer.
The system includes:
• Process unit
• Amplifier module
• Signal conditioner module for pressure transducer
Angular speed process
The process unit consists of a bidirectional permanent magnets d.c. motor. A tachogenerator and an incremental encoder of optical kind – which are the transducers - are splined on the axis. The actuator consists of a DC motor.
Beside the basic modules of the system, there is the power amplifier module for the angular speed and the conditioning modules of the signals for the speed and angular position sensors.
The system includes:
• Process unit
• Amplifier module
• Signal conditioner module for tacho-generator
• Signal conditioner module for feedback reaction
• Signal conditioner module for photoelectric speed transducer
Linear position process
The microprocessor position control drives the motion of a single-axis translator by reading from bidirectional incremental encoder. The microprocessor controller is the processing unit of the position control and is complete with display and keyboard for data insertion and display. A D/A converter module is used to control the analog section of the position control while a second module enables the display of the logic state of the
output lines of the microprocessor controller. There are also the conditioning modules for the speed and position sensors.
Beside the base modules, the system includes:
• Process unit
• Amplifier module
• Microprocessor digital control module
• Display and keyboard for module
• 12-bit D/A converter module
• 8-bit I/O module
• Signal conditioner module for tachogenerator
• Signal conditioner module for incremental encoder
Luminosity process
The process unit consists of a dark chamber where the actuator of the light processing is inserted which consists of an incandescent lamp and three semiconductor luminosity transducer devices.
Beside the basic modules of the system, there is the power amplifier module for the luminosity unit and the conditioning modules of the signals for the sensors.
The system includes:
• Process unit
• Amplifier module
• Signal conditioner module for photoresistor
• Signal conditioner module for photodiode
• Signal conditioner module for phototransistor
Force transducer
The system consists of a strain gauge load cell and a conditioning module for the generated signal.
Beside the module-holder frame and the power supply, the system includes:
• Force transduction unit
• Signal conditioner module for load cell
Linear shift transducer
The system consists of an L.V.D.T. (Linear Variable Differential Transformer) and potentiometric position tranducer and the conditioning modules of
the generated signals.
Beside the moduleholder frame and the power supply, the system includes:
• Position transduction unit
• Signal conditioner module for L.V.D.T.
• Signal conditioner module for linear potentiometer
Proximity sensors
The system consists of a linear inductive proximity sensor, an ON/OFF inductive sensor and an ON/OFF capacitive sensor and the conditioning modules for the generated signals.
Beside the module-holder frame and the power supply, the system includes:
• Proximity transduction unit
• Signal conditioner module for linear inductive sensor
• Signal conditioner module for On-Off inductive sensor
• Signal conditioner mod. for On-Off capacitive sensor
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