Plc Based Projects - Free download as PDF File .pdf), Text File .txt) or read online for free. Dec 24, This paper describes how the present automation system comes in to existence through its various stages. In the past, automation is done through relays and contactor logics. But with the advent of microprocessors & microcontrollers several new tools as PLCs (Programmable Logic. PDF | On Dec 22, , Deepak Kumar Chowdhury and others published PLC based operation to teach PLC-based project in the undergraduate curriculum.

Plc Based Projects Pdf

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and implementation of a PLC-based water level control system. In this project, we have two primary objectives: the overall mechanical design of the system, and. PROJECT REPORT “PLC BASED ELEVATOR CONTROL SYSTEM” Prepared by : KRUPAL R BHOI () PRIYANK R PATEL (). of PLC programming, timers, counters, program control instructions, data Students were expected to complete an extensive PLC design project based on the.

100+ Electrical Projects for Engineering Students

The PLC is burnt with program that is necessary to control the sensors and relays interfaced to it. The interfaced units are controlled by the PLC in an efficient and faster manner, thus providing the system to be reliable than the existing ones. Delta's DVP series programmable logic controllers offer highspeed, stable and highly reliable applications in all kinds of industrial automation machines. In addition to fast logic operation, bountiful instructions and multiple function cards, the cost-effective DVP-PLC also supports various communication protocols, connecting Delta's AC motor drive, servo, and human machine interface and temperature controller through the industrial network in to a complete Delta Solution for all users.

LM35 The LM35 series are precision integrated-circuit temperature sensors, whose output voltage is linearly proportional to the Celsius Centigrade temperature.

It can be used with single power supplies, or with plus and minus supplies. Once it reaches the specified temperature range, which is meant for fire Accident, the belt conveyor will give indication and stopped immediately and fire is extinguished, thus protecting fire accidents without time delay.

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This provides power momentarily to a relay coil. As the relay coil is energized, it closes its normally-open contact so that power is provided through the normally-open relay contact to both the relay coil and the conveyor.

As long as the relay is energized, the circuit is complete and power is provided to the conveyor. This button is must for safe and reliable operation of conveyor. EMERGENCY STOP Emergency stop E-Stop buttons are an important safety component of many electrical circuits, especially those that control hazardous equipment such as gas pumps, moving machinery, saws, mills, and cutting tools, conveyor belts, and many other types of equipment.

They are designed to allow an operator or bystander to stop the equipment in a hurry.

In combination with computer controlled pallet handling equipment this allows for more efficient retail wholesale and manufacturing distribution.

It is considered a labour saving system that allows large volumes to move rapidly through a process, allowing companies to ship or receive higher volumes with smaller storage space and with less labour expense. These are used for shifting of coal from one place to other places. Once coal is extracted from underneath the ground, there are various options available when it comes to transporting it to where it needs to go.

Conveyors are also used to transport material into processing equipment and back out again, and thus optimize productivity. The below figure shows the working of PLC system, in that input and output ports are connected with the power supply. A touch screen based digital control of devices is shown here.

Real-time Posture and Activity Recognition by Smart Shoe :In this paper, we discuss a method for performing automatic posture classification using Artificial Neural Networks operating with fixed point precision arithmetic. The computational time is optimised through application of forward feature selection for determination of the most significant predictors.

This system uses some wearable sensors and portable wireless devices. Among them solar energy is the best source. Boost converters are required to increase the output.

It has very good advantages compared to others in efficiency, reliability etc. Average current control technique is used in this. Results are verified in mat lab. Though it has many advantages this multi level inverter MLI has number of power electronic components.

Increased number of switches increases over all loss as switching losses increases. This paper mainly focuses on decreasing the number of switches in MLI. This paper shows a UPS system that uses solar and wind power instead of mains supply as there is energy crisis. Cyber Security in the Smart Grid :The smart grid is revolutionary in the existing power grid.

The smart grid system enhances the future power system. Due to number of inter connected devices, there is a problem in cyber security.

This paper focuses on the cyber security in this smart grid. But it has some draw backs like high torque ripple, acoustic noise, speed oscillations. The functional blocks of PSS are developed in Simulink and simulation is carried out. This paper explains an extension to this method. Initially water is held in captive in an enclosure. Then it is raised to high potential energy using wind or water. This project uses timer in mono-stable mode which drives GTO Gate Turn-Off thyristors driver circuit so as to change the mains three phase supply from start to delta.

This project operates in three modes namely manual mode, auto mode and set mode. In manual mode, various loads are controlled by the input given by user by switches or remotely through GSM. In auto mode, loads are switched at regular default timings while in set mode loads are controlled based on the timings set by the user. The microcontroller continuously monitors the three phases of input supply for over voltage and single phasing conditions and accordingly switches the relays to switch the motor.

By receiving the feedback signal of speed, microcontroller will give PWM signals to the IGBT inverter bridge in order to drive the motor at desired speeds. According to the set limits for leading and lagging power factors, microcontroller switches set of capacitors to improve the power factor. This design uses the concept of Ohms law for detecting the change in voltage across the cable whenever fault or short circuit takes place in the cable.

This project uses timer as a main controller which resumes the load when a temporary fault occurs in three phase system while it makes the load to be remain in tripping mode during permanent fault. This project uses ARM controller for measuring electricity consumption a given period of time.

Category: PLC Projects

Further, this billing information is sends to utility companies as well as to the customers using GSM module. The microcontroller is programmed in such a way that it compares the actual speed get from hall sensor with desired speed and accordingly genrates the PWM signals to the motor driver unit.

Microcontroller acts as a data acquisition and control device which forms the bridge between PC and electrical appliances. Microcontroller receives the command signals from PC and appropriately controls the respective load.

In this project gas sensor monitors the gas leakage which gives the input to microcontroller when it senses the gas leak.

Then the microcontroller activates the tripping mechanism to shutdown the power supply. RF module used in this project to transfer the information remotely to the alarm circuit and tripping circuit.

What is a PLC System – Different Types of PLCs with Applications

By receiving the signals from the sensor, microcontroller performs the switching of pump using relay. Sensors like temperature, LDR and gas detection sensors connected to the microcontroller unit continuously monitors the weather parameters.

The home appliances are automatically controlled when these parameters exceeds their set limits. Remote monitoring and control is also facilitated with Zigbee communication. A set of sensors along with microcontroller unit continuously monitors the solar energy and also allows the user to access the remote monitoring of these parameters.

The RF communication module attached with robot sends the sensed data to the central monitoring area. Transformer parameter like temperature of the oil, oil level, voltage, current, etc are continuously monitored using various sensors. The sensor data is transmitted to the central controller using Zigbee module.

The power generated by the solar panels is stored in batteries during the day time and at the night this energy is supplied to the street lights.

As the traffic on roads decreases from peak hours to late nights, this projects controls intensity of street lights based on timings.

In this project, magnetic resonant coupling method is implemented to transfer the power from the source to a load. This inspects fire accidents, obstacles, supply failures, presence of harmful gases, etc of the cable. GPS module facilitates finding of fault location and this information is further transferred to the main controller through the communication module. Bluetooth module attached to the control circuit receives the control commands from user mobile.

Microcontroller receives these signals and controls the motor speed by varying the triggering pulses to the TRIAC.

IR sensors at particular positions on the track, gives the input to the microcontroller about the train arrival and departure information. According to these signals microcontroller controls gate operation as well as traffic lights. We can make the hardware model of the three floor Elevator. This elevator is operate by using of dc motor.

PLC is gives the command to the relay. Relay is operate the dc motor in forward direction and reverse direction. Based on this relay operation elevator is move up and down.

BCD to seven segment circuit is used for to show the current position of elevator. It is also control the door close and open of the elevator It is a control by the electro-magnet relay when the two relays are energized lift is moving upward and other two relays are energized lift is moving downward.

If the two relays are energized than gate is open and if the other two relays are energized than door is close of the elevator. Blocks came with typical components, which PLC consist of, is found in the following picture.

Special attention needs to be given to input and output, because in these blocks you find protection needed in isolating a CPU blocks from damaging influences that industrial environment can bring to a CPU via input lines. Central processing unit is the brain of a PLC controller. CPU itself is usually one of the microcontrollers. CPU also takes care of communication, interconnectedness among other parts of PLC controller, program execution, memory operation, overseeing input and setting up of an output.

PLC controller can be reprogrammed through a computer, but also through manual programs console. Advantages of PLC: Executes the program logic. Communication checking with the software and perform other requests according to their preference. Basic Requirements: In PLC programming in order to create or change a program, the following items are needed: Making the control circuit for elevator 2. Making the hardware model of three floor elevator Full description of planning of our project work: Making the control circuit for elevator: For control the elevator system through PLC we can making the control circuit.

Following circuit are made: BCD to seven segment display circuit: The display uses seven 7 segments in order to represent the decimal numbers The numbers are formed when they light some of the parts of the seven segment display.Thus, these PLCs do not need any use of a keyboard or monitor for reprograming the processor each time.

PLC is invented to replace traditional control panels whose operations depend on the electromagnetic logic relays that are based on timers in industrial control systems.

Integration, reuse, flexibility and optimization are demanded to adapt to a rapidly changing and competitive market.

These sensed parameter values are send to the central monitoring station using Zigbee module and also to the authorized persons using GSM module.

IR object sensor detect the object elevator current position. A relay driver is connected to the microcontroller unit to change the direction of motor. This ARM controller with touch screen enabled design is very helpful for physically disabled persons to control their wheelchair.

For the assessment of transient stability, a multi-machine system is implemented in this project. This button is must for safe and reliable operation of conveyor.

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