muhammad jawhar

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Laboratory
StudentName: Ahmed Naseh Latif
Class: 4 Stage – Group:B1
CourseTitle: PLC Lab.
Department: Mechanic and MechatronicEngineering
EXP NO: 2
EXP.Name: introduction to control apparatus, and Intermittent
Operation of Asynchronous motor with aid of PLC
College of Engineering
Salahaddin University-Erbil
Academic Year 2020-2021

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Abstract
Abstract - Induction motors are widely used in many operating areas and industrial
applications as they are simple, robust, reliable and have low production costs. The use of
Induction motors have increased nowadays due to their versatility, good self-starting
capability and these motors also offer simple, rugged construction, , low cost, reliability and
easy maintenance. The reliability of an induction motor is of great Importance in applications
such as commercial, aerospace and military and many industrial applications. In this paper
different problems of IM are dealt with as over current, overvoltage, over temperature, over
speed, inrush current, vibration monitoring during it’s time of operation. There are various
proposed methods for fault diagnosis and protection of IM. Some of them are Stator fault
monitoring techniques, protection system using Microcontrollers, On-line fault detection,
Programmable Integrated Circuit (PIC) based protection system and Programmable Logic
Controller (PLC) based protection system. In this study, the method which is applied is PLC
based protection system of an IM.
Introduction
Induction motors are one of the reliable electrical machines but sometimes they undergo
undesirable stress, causing faults in induction motor and its failure [1]. The introduction of
redundant element provides safety by detecting the failure and lead to the appropriate solution.
Due to the recent advances in Programmable Logic Controller (PLC) technology, it is used in
many industrial applications. One possible application of PLC, is to use it for fault detection
of IM. There exists a variety of machine failures including mechanical and insulation faults.
There are also different types of insulation system faults and mechanical faults. The solution
to the different faults of the induction motor including phase currents, the phase voltages, the
speed, and the winding temperatures have been achieved with the using a microcontroller ,but
representation of these electrical parameters have not been displayed on a screen. The PLC
systems are comprised of special I/O units applicable for direct usage in industrial automation
systems [2].The input components, such as temperature sensors, the level, and the pressure
can be directly connected to the input. The driver components such as contactors and solenoid
valves of the control circuit can be directly connected to the output. Many industries use PLC
in automation processes to reduce the production cost and to increase quality and reliability.
1. GENERAL FEATURES OF Y-0030-A PLC APPLICATION MODULES

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General structure of Y-0030A application modules is composed of components above. These
components can show changes according to the type of the application module. Components
and their usages are listed below.
1 . DC 24V power input. DC 24V power that is required for application circuits is applied
with the external power supply. Pay attention to the polarity (+,- polars) when applying DC
24V power. If the application modules are to be used with D-sub25 connecting cable, there is
no need to apply energy to the power input.
2 . Connecting cable provides the connection between 8 bit digital input/output points of PLC
and the module. How inputs/outputs between the application and digital inputs/outputs from
this cable are used is shown in input/output tables of the application. On the connecting cable,
24V DC supply voltage that is required for the module is available.
3 . Connecting cable provides the connection between 8 bit digital input/output points of PLC
and the module. There are conductors for 2 analog input and 1 analog output in the cable.
How inputs/outputs between the application and digital inputs/outputs from this cable are used
is shown in input/output tables of the application. Y-0030A PLC APPLICATION MODULES
2
4 . Digital inputs/outputs of the application are transferred to D-Sub25 Male connector in
each application module. Input/output points on this socket and inputs and outputs that are
used in the application are specified in application input/output table.
5 . Analog inputs/outputs of the application are transferred to D-Sub25 Male connector in
application modules where analog input/output connections are used. Input/output connections
that are used in the application are shown in application input/output table. In some
application modules, there is no need of analog inputs/outputs so these connection sockets are
not included in the module.
6 . When D-Sub25 and D-Sub15 connection cables are not used for input/output connections
of the applications, connections can be made with the help of 2 mm sockets. For inputs and
outputs that are used in the applications, 2 mm sockets on the board can be used. (
ATTENTION: If the application modules D-sub25 and/or D-sub15 are to be used with
connection cables, you don't need to use these cables at the same time with 2 mm test
cables between application circuits (7) and PLC input/output points (6) on the module.
7. It is the part where application circuits are present. All input/output points of the application
can be externally connected to the PLC through 2 mm sockets.
3 1.1 . Connection Structures of Y-0030-A PLC Application Modules They can make
individual connections between PLC and input/output points of the applications. Besides, D-
Sub connection cables and all inputs/outputs can be connected directly at a time over Digital
I/O link (Y-0030-M04) and/or Analog I/O link (Y-0030-M06) module cards on modular PLC
platform (Yıldırım Electronic product Y-0030M).

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In Figure 4 and Figure 5, connection parts of D-sub 25/D-sub 15 male and female connectors that are
used in PLC applications can be seen. In Figure 6, connection principles between application modules
and I/O link modules can be seen.

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4 mm sockets are used for connections in asynchronous application modules. Y-0030- A01/06 PLC
I/O LINK module should be used in order to make the connection between PLC and asynchronous
application modules via 4 mm sockets.

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Figure 7: PLC i/O LINK module with Digital I/O LINK card, or PLC connection.
Structural diagram of input/output relation between any PLC and controlled system can be seen below.

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Process Steps:
Make the connections with 4 mm test cables according to controller circuit in the figure
10.and Make motor electric terminal connection according to the star connection.then Make
the connections with 4 mm test cables according to power circuit in the figure 11. After taking
the necessary measures, apply DC 24V energy to the controller circuit and apply 3 phase AC
380V to the power circuit. Press START button. Examine the movement of the motor.
And Press stop button when STOP button is pressed and observe the operation of the motor.
Close all energy sources on the circuit. Undo the controller circuit in Figure 10 however leave
power circuit as it is. In place of controller circuit, install the circuit again according to the
PLC technology schema in figure 13. Make PLC inputs/outputs with 4 mm test cables over
PLC I/O LINK module.Open Step 7-Micro/Win program. Open ...A01
UygulamalarıA01Uyg1.mwp file in the application CD and install it to the PLC. Set PLC to
the RUN position. ( Application program is prepared for CPU 224XP. Program lines for
different PLC's must be taken as samples and must be arranged for various PLC's.) After
taking the necessary measures, apply DC 24V energy to the controller circuit and apply 3
phase AC 380V to the power circuit.Press START button. Examine the movement of the
motor.and Press stop button when STOP button is pressed and observe the operation of the
motor.
Discussion
1-The overcurrent relay plot in either the rapid or planned enlistment write isn’t generally
attractive for transmission lines due fundamentally to varieties in the extent of the overcurrent
under different framework working conditions and to the relative estimation of the base
overcurrent and the full load current of the line.
A rapid overcurrent transfers must be set securely over the most extreme through shortout of
the line area, their zone of safe particular task is normally constrained to just a little segment
of the line. The coordinated acceptance overcurrent hand-off used to cover the rest of the line
must be set securely over the most extreme load current with adequate planning to particular
or outside flaws. Directional transfers of either the watt meter composition or the fast sort are
utilized with the overcurrent transfers where heading is required. Where least estimations of
blame current are close to the full heap of the line, overcurrent transfers are not relevant. In
any case, where they can be utilized, they have the upside of straightforwardness.
2- The most elementary objects in Ladder Diagram programming are contacts and coils,
intended to mimic the contacts and coils of electromechanical relays.Contacts and coils are
discrete programming elements, dealing with Boolean (1 and 0; on and off; true and false)
variable states.Each contact in a Ladder Diagram PLC program represents the reading of a
single bit in memory, while each coil represents the writing of a single bit in memory.Discrete
input signals to the PLC from real-world switches are read by a Ladder Diagram program by
contacts referenced to those input channels.In legacy PLC systems, each discrete
input channel has a specific address which must be applied to the contact(s) within that
program. In modern PLC systems, each discrete input channel has a tag name created by the
programmer which is applied to the contact(s) within the program.Similarly, discrete output
channels – referenced by coil symbols in the Ladder Diagram – must also bear some form of
address or tag name label.

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