Single phase induction motor direction control using plc. In general, several control methods are existed to drive the 3ph induction motor with the aid of variable. Dec 17, 2019 this method cannot be used for squirrel cage induction motor. Induction motor speed control using plc and scada irjet. Also the knowledge about fault mode behavior of an induction motor drive system is extremely important from the standpoint of improved system design, protection, and fault tolerant control. When power is supplied to an induction motor at the recommended specifications, it runs at its rated speed.
Plc is used to monitor the values of the voltages, currents, temperatures, and speed of the three phase induction motor. This application note also covers the basics of induction motors and different types. Here a programmable logic controller is used which will be programmed as per our need. Apr 22, 2017 s7 200 siemens plc control speed of ac motor using step7 microwin software also using kips server for communication between step 7 with controlling gui. A novel method of induction motor speed control using plc.
An843, speed control of 3phase induction motor using. Vector and direct torque control which use motor model and suitable control algorithms are considered ideal for slip minimization. Soft starter for 3 phase induction motor is used to control the speed control the current and speed of induction motor at the start. In this method of speed control of three phase induction motor, the two threephase induction motors are connected on a common shaft and hence called cascaded motor. Also, the implementation of the hardware and software for speed control and protection with the results. There are lots of motors and conveyors used in industries for different purposes in some cases motors or conveyors need forward and reverse operation for some control. The starting, speed control and protection of induction motor can achieved easily by using plc.
The plc implementation of forwardreverse motor circuit include the use of the overload contacts to monitor the occurrence of an overload condition. Speed control of induction motor using vector control technique. Speed control of three phase induction motor using plc under. This is plc program for forward and reverse control for 3 phase asynchronous motor. However, induction motors do not inherently have the capability of variable speed of operation. Induction motors are widely used electrical motors due to their reliability, low cost and robustness. In this project i am posting the project related ladder diagrams and connection diagram which is common to all plcs. Wound rotor induction motor the engineering projects. The implementation of a monitoring and control system for the induction motor based on programmable logic controller plc technology is described. International journal for research in applied science.
Main purpose of this paper is to automate the three. Pdf induction motor speed control using plc and scada. Before examining the plc program, first consider a hardwired approach. The main objective of the work is use a programmable logic controller plc instead of the classic control to make a cheap and reliable protection system for three. Component of speed control of im by plc miniature circuit breaker mcb. The plc implementation of this circuit should include the use of the overload contacts.
Induction motors are the most widely used motors for appliances, industrial control, and automation. To address this problem, a plc based control system was designed for a threephase induction motor. Design and implementation of plc based monitoring control system for induction motor abstract. Implementation of plc based starting and direction control. This paper presents proposed motion controller for synchronize four 3ph induction motors based on plc capability. Speed control of ac motor using plc pdf keywords induction motor, rotor resistance, protection, speed control, plc. Speed control of induction motor by using inverter vfd. In order to control the speed of an ac induction motor a more complex controller. Induction motor speed control using plc and scada vaibhav gupta professor, dept.
This paper present the speed control of single phase induction motor using arduino with the controlling objectives pwm and spwm. Also, the implementation of the hardware and software for speed control and protection with the results obtained from tests on induction motor performance is provided. Pdf plcbased control system for a threephase induction. Fault identification and protection of induction motor using plc and scada sujith john mathew 1, b. Siemens standard drives application handbook martin brown.
In order to control the speed of an ac induction motor a more complex controller, usually called an inverter is required. Speed control of induction motor using vector control. Speed control of induction motor using pwm technique. A scada system has been developed to monitor the parameters. Figure 4 plc implementation of the circuit in figure 1. Design and implementation of plcbased monitoring control. Vfd employed in this experiment work on vf method of. We have designed a control panel and programmed the plc according to our need.
Again, the latching occurs before the forward and reverse motor starter circuits, which will turn off due to the overload. Also the induction motor can be run in either of the two directions which is quite useful in many applications. Jun 06, 2016 speed control of induction motor using plc and vfd 1. So electronic soft starters use a control system to reduce the torque by temporarily reducing the voltage or current input until the induction motor reaches its. As induction motors are widely being used, their speed control may be required in many applications. In some cases motors or conveyors need forward and reverse operation for some control purpose. Several conventional and numerical controller type intended for. The basic structure of the plc is illustrated in fig. Implementation of plc based star delta starter for starting.
Vfd based speed control of three phase induction motor by. Induction motor draws very high current at the start and motor attains its full speed instantly. This paper is about speed control of induction motor which has very vast application in industrial sector using plc programmable logic controller and vfdvariable frequency drive. Bhargavi and suneet nayak is an authentic work that has been carried out by them under my supervision and guidance in partial fulfillment for the requirement for the award of. Programmable logic controller, supervisory control and. In addition, we will monitor motor parameters via scada system. Scalar control is the term used to describe a simpler form of motor control, using nonvectorcontrolled drive schemes. Software platform namely siemens ladder logic programming s7200 was comprehended, analyzed and implemented. Abstract induction motor im control is a difficult and. In this project, slip ring induction motor starting, protection and speed control schemes are implemented using programmable logic controller plc.
Controlling 3phase induction motors using vfd and plc. In order to achieve the objectives, the establishment of the communication between plc and labview is crucial as labview is 3rd party software instead of using the software implemented in the plc itself. Reference 1 theory and performance of electrical machine a book by j. In this paper, various aspects of three phase induction motor such as speed.
S7 200 siemens plc control speed of ac motor using step7 microwin software also using kips server for communication between step 7 with controlling gui. The system is designed using a plc for intelligent control on a threephase induction motor and. Control and protection of induction motor can achieved easily by using plc. Plc based multi threephase induction motors motion. Three phase induction motor are widely used motor in industry because of its rugged construction and negligible maintenance. The aim of this project is to limit the starting current and increase the starting torque and to control the speed of a three phase slip ring induction motor by rotor resistance control method using programmable logic control. Controlling 3phase induction motors using vfds and plc vfd combination to control the speed of a 3 phase induction motor. Speed control of three phase induction motor using plc. I will tell you about the construction of wound rotor induction motor in the first section.
Therefore, the main contribution of this paper is the monitoring, speed control of motor was done based on programmable logic controller, variable frequency drive and scada unit. One motor is the called the main motor, and another motor is called the auxiliary motor. How to control a vfd with a plc part 4 configuring. The system is designed using a plc for intelligent control on a threephase induction motor and dc generator. Fault diagnosis of induction motor using plc semantic scholar.
Basic plc program for control of a threephase ac motor. Rotor resistance control method is implemented as starting method while over voltages, over current and over temperature protection schemes are. Variable frequency drives vfd can also use to control the motor rotation direction and rotation speed of the three phase induction motor. Also in this project we were motivated to monitor the speed of three phase induction motor using a scada system. In this application note, we will generate a third pwm in software, using a general purpose timer and an io pin resource that are readily available on the picmicro microcontroller. This method cannot be used for squirrel cage induction motor. Home technical articles basic plc program for control of a threephase ac motor for beginners motor starter while the lighting control system previously discussed is useful to explain basic plc operation, a more practical, and only slightly more complex, application is startstop control of an ac motor. The hardware set up consists of vfd, conveyor connected with ac motor, 2 discrete.
The present work was motivated to develop a scheme to monitor and control by using plc. Implementation of plc based star delta starter for. How to control a vfd with a plc part 4 in this article, you will learn how to configure the electrical motor data using the siemens starter software. The motor is tested at four different control speeds.
Control and monitoring of 3 phase induction motor using plc. Pwms, one less than the three required to control a 3phase induction motor. The ethernet control systems presented in this paper is to control squirrel cage three phase induction motor. Ac motor speed control with plc using step7 microwin part1. Pdf induction motor control by stator voltage control. Programming is done by using programmable logic controller. Induction motor speed and direction controller project serves this purpose of controlling the speed and direction of the induction motor.
Aug 16, 2017 this video explains the basics of analog io programming using rs logix 500 plc software with an example. The plc correlates the operational parameters to the speed requested by. Free download induction motor seminar ppt, pdf report. Single phase induction motor direction control using plc v3. An843, speed control of 3phase induction motor using pic18 mcus. Pdf speed control of three phase induction motor using plc.
Design and implementation of plc based monitoring control. Oct 19, 2014 here i am posting another plc related project, which is the direction control of dc motor using plc. The ac induction motor is simple, low cost, reliable and widely used throughout the world. In our application, it controls through analog and digital in puts and outputs the varying loadconstant speed operation of an induction. Programmable logic controller is an industrial controlling device and is used to automate machines and factory assembly lines. In this study, the plc measures the current, the voltage, the temperature, and the speed of an induction motor through analog inputs. Welcome to lesson 4 of how to control a vfd with a plc. Induction motor driven by vfd, with plc as a controller provided high accuracy. The control of three phase induction motor is applied with vfd, plc and monitored with scada. Starting torques can be 3 times higher to overcome the starting conditions, causing mechanical stress on the components in the motor.
The analysis on the performance of induction motor is done with its characteristics. Already has done this project using relay circuit and microcontroller. Implementation of plc based star delta starter for starting and direction control of three phase induction motor shruti kharait, prof. I have already posted a project on soft starter for three phase induction motor using pic microcontroller. Pdf plcbased control system for a threephase induction motor. Plc implementation of forwardreverse motor circuit with. Pdf design of a plcbased variable load, speed control system. Control of induction motors by using programmable logic. However, we selected the rotor resistance method of control for starting the induction motor. Example of these application including air conditioning, fan and blowers. Figure 2 shows the simplified wiring diagram for this motor.
There are lots of motors and conveyors used in industries for different purposes. Different speed control methods of induction motor are explained below. The implementation of the hardware with results obtained from tests on induction motor performance is. Vf speed control of three phase induction motor by using plc and scda. Speed control of induction motor using fuzzy logic approach. Presented here is a robust system for switching onoff, varying the speed and direction of rotation of an industrial 3 phase induction motor using vfd and plc. Generally, it is known as the asynchronous motor because its running speed is less than its synchronous speed. Reviews on methods of fault detection and protection of. The speed of the motor is controlled by varying the frequency through pulse width modulated pwm signals applied to the gate of the power mosfets. While the lighting control system previously discussed is useful to explain basic plc operation, a more practical, and only slightly more complex, application is startstop control of an ac motor. Oct 11, 2014 hello friends, i am posting version3 project of single phase induction motor direction control. Pdf design and implementation of plcbased monitoring control. Oct 10, 2016 a wound rotor induction motor is also known as slip ring induction motor.
Jun 14, 2018 also in this project we were motivated to monitor the speed of three phase induction motor using a scada system. Therefore, the control method discussed in this paper can be applied to everywhere were three phase induction motor is used. Plc motor control ladder logic programming motor control. An induction motor can be defined as the ac electric motor device in which a power source fed by the alternating current with the help of a primary winding. All the required control and motor performance monitoring data will be taken to a personal computer by scada. In order to understand how an inverter works, it is necessary to understand how an induction motor works. Threephase induction motors are widely used in industrial. Fault diagnosis of induction motor using plc open access. The speed of induction motor can be adjusted to great extent so as to provide easy control and high performance. The control system is designed based on the most advanced technology which gives a high amount of flexibility and efficiency. Soft starter for 3 phase induction motor using arduino.
Various automation processes in the industry need control of ac induction motors using ac drives. In the second section, i would be throwing light on the operation and working principle of wound rotor induction motor. Sudhir phulambrikar student iv sem, department of electrical engineering, sati, vidisha m. The entire control system is switched by using plc.
By using pwm technique user can control speed of induction motor according to users requirements. References 1rinchen geongmit dorjee, monitoring and control. Vf speed control of three phase induction motor by using. The reliability of an induction motor is of great importance in industrial as well as commercial, aerospace and military applications. A linear curve is obtained on the graph plotted between frequency and speed. The combination of plc and vfd provides an efficient approach for getting a motor with. Speed control of three phase induction motor electrical4u.
Thus, by implementing automation scheme the productivity can be improved at lower cost. Hello friends, i am posting version3 project of single phase induction motor direction control. Input and output components of the processes are connected to the plc. Plc has to stop the motor if the stop button is pressed. This necessitates a speed control mechanism that is efficient and is also safe to use. The motor speed and output torque are estimated from the voltage and current output to control them. Starting and speed control of 3phase slipring induction. This starter kit is particularly suited to drive 3phase brushless motors either ac induction or permanent magnet types and demonstrates how effectively the stm8 microcontrollers can be used in realworld motor control applications. The implementation of forward and reverse direction control system with dc injection braking for three phase induction motor based on programmable logic controller \ plc \ technology is described. Plc trip logic or interlock has to be enable only when motor is in remote mode.
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