Lokesh Report2

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    PREFACE

    As a part of the curriculum prescribed for Bachelors Degree of Engineering by

    UNIVERSITY INSTITUTE OF ENGG. & TECHNOLGY, CHANDIGARH a total

    of 24 days practical training has to be taken after third year completion. Thus being

    a student of engineering I have completed my training at VIDEOCONINDUSTRIES LIMITED SHAHJAHANPUR.

    Practical training is one of the major tasks for any professional course.

    The real place where a professional person faces and tackles the problems was ableto get familiar to various processes in the industry.

    I was given a project on UTILITY in the duration of 24 days.

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    ACKNOWLEDGEMENTS

    I am highly thankful to Mr. Gaurav , Mr. Raj kumar Gupta for providing me the

    opportunity to work on the current project i.e."PLC" with their prestigiousorganization and Mr. Bhram Prakash, Mr. Sher Singh and Mr. Yogesh Gupta who

    allowed me to take my training as per the curriculum of the Bachelors Degree of

    Engineering, as prescribed by UNIVERSITY INSTITUTE OF ENGG. &TECHNOLOGY, CHANDIGARH.

    I am deeply indebted to Mr. Gaurav for assigning the project, and also

    grateful to Mr. Raj kumar Gutpa for sharing his views and giving total insight into

    the minor details of the project as well as that of the organization and grateful to

    him for helping me in preparing my Training Report. The help rendered by Mr.

    Surendra Jingar from time to time is also thankfully acknowledged. The keen

    Interest shown by Mr. Yogesh Gupta during the course of the final project and these

    investigations is creditable.

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    Contents:-

    1. Introduction to company

    2. Company profile

    2.1 Background of AB Videocon

    2.1.1 Details of shahjahanpur plant

    3. Name of plant shops

    3.1 Process flow chart

    4. Function of different departments

    4.1 Production Department

    4.2 Plant Engg. Department

    4.3 Quality Assurance Department

    4.4 Material Department

    4.5 Design & Development Department

    4.6 Manufacturing Engg. Department

    4.7 HR Department

    4.8 Commercial Department

    4.9 Maintenance Department4.9.1 Purpose

    4.9.2 Scope

    4.9.3 Defination

    4.9.4 Responsibility

    4.9.5 Decision

    5. Scope of Study

    6. Brief description of PLC7. Project on S5 series of PLC

    8. Introduction to S7 (Micro series) PLC

    9. Introduction to S7 (Modular series) PLC

    10.Inverter (Frequency drive)

    10.1 Parameters

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    Introduction of the Company

    Videocon Leasing & Industrial Finance Limited, was incorporated on 4th

    September,1986 as Adhigam Trading Private Limited. In terms of the necessary

    resolutions passed under Sec. 21 of the Companies Act, 1956, the name of the

    Company was changed to Videocon Leasing & Industrial Finance Limited on 14th

    February, 1991.The Company received a fresh certificate of incorporation from theRegistrar of Companies, Gujarat at Ahmedabad on 14th

    February, 1991.Adhigam Trading Pvt.Ltd. (ATPL) was promoted by Mr. Indrakant T. Parikh and

    Naishad I. Parikh in September, 1986 as a private limited company and was initiallyengaged in the business of trading in paper tubes. In September, 1988 the Company

    decided to diversify in the business of lease financing, hire purchase and investment

    activities.

    The Management of the Company underwent a change in the year 1990-91 by way

    of transfer of equity shares to the Videocon Group.1,00,000 Equity Shares of Rs.

    10/- each of Adhigam Trading Private Limited were purchased by the Videocon

    Group at a premium of Rs. 3/- per share in April, 1991.The total consideration ofRs. 13 Lakhs was paid by cheques.

    2005

    -Videocon acquires entire stake of Videocon India on July 07, 2005.

    -Videocon takes over Hyundai Electronics.

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    COMPANY PROFILE

    Videocon is an Indian multinational with interests in Consumer Electronics, HomeAppliances, Colour Picture Tube Glass, and Oil & Gas. Videocon was founded in 1987byNandlal Madhavlal Dhoot. At that time it used to manufacture TV and Washing Machine.In 1989-90, Videocon started manufacturing Home Entertainment Systems, ElectricMotors & AC. Videocon entered Refrigerators and coolers segment in 1991. In1995,Videocon started manufacturing Glass shells for CRT and in 1996 it ventured intoKitchen appliances and crude oil segment. In 1998, Videocon started manufacturingCompressors & Compressor Motors. In the year 2000, Videocon took over Philips ColourTV Plant. In 2005, Videocon took over 3 plants of Videocon India and acquired Thomson

    CPT. Today, it has evolved into a giant conglomerate with annual revenues of overU$4.1 billion.The Videocon group emerges as a USD 2.5 Billion global conglomerate continuing to settrends in every sphere of its activities from a conference room sized assembly linein 1979.Today the group operates through 4 key sectors:Consumer DurablesThomson CPTCRT GlassOil & Gas

    Background of VIDEOCON

    Videocon was formed in 1986, Videocon is a Multinational company registered in

    Stockholm, Sweden. It is one of the worlds leading manufacturers of Household

    Appliances operating in 60 countries and Employing 111,000 people worldwide. Its

    product range include Refrigerators, Washing machine, Vacuum cleaners,

    Microwave ovens, Airconditioners, Dishwashers, Lawn movers Garden Tractors,

    And Aluminum product for industrial Application etc. It owns several global brand

    names which Include VIDEOCON, WHITE WESTINGHOUSE, FRIGDAIRE,

    KELVINATOR, EUREKA ZANUSSI, AMERICOLD AND AEG.

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    Videocon is providing Videocon Kelvinator Ltd. (EKL) the latest technology,

    developed and presently used in the Videocon Groups European facilities. This

    technology is environment friendly and energy efficient.

    Maharaja International Ltd. was renamed to VIDEOCON KELVINATOR Ltd.

    with effect from 8th

    Feb 1999. The company is at present engaged in the

    manufacturing of Domestic Refrigerators under famous brand name of

    KELVINATOR.

    Details of Shahjahanpur Plant

    The existing plant has a land covering an area of 81085 sq. meters and is free from

    Encumbrances and has a clear title. The companys existing Factory, Building

    includes total Refrigerator production facility, Utility Block, Stores, D&D with

    Auto-Cad Design Facility, Canteen and Administrative block and has a covered area

    of 27000 sq. meters.

    It employs approx.1000 persons. It manufactures 3 different models of domestic

    refrigerators (i.e.165, 175L single door, 195/210/220L single door and 315L double

    door.

    At present the company is producing approx. 4 lacks refrigerators per year. The

    Company is catering the needs of domestic and neighboring countries. The plant

    received ISO 9001 certificate in February 2000, by D.N.V, B.V. Netherlands formanufacturing and design of refrigerators.

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    History

    Geographical Location

    Shahjahanpur, Rajasthan

    Kelvinator Refrigerators

    Plant Profile Home Slid

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    Today

    Videocon - European market leader in white goods

    Worlds largest producer of floor-care products,

    absorption refrigerators, and compressors.

    Videocon

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    Food service equipment Market leader in Europe

    World s second largest producer

    Laundry equipment World leader in equipment for

    laundry rooms, hotels

    & institutions

    Leisure appliances

    World leader in absorbtion

    refrigerators for caravans

    & hotel rooms

    Components World s largest producers

    of compressors

    Professional Products

    Worlds

    Leadingsuppliers of

    Professional

    Kitchens

    Forestry equipment Leadin g brands for

    professional chainsaws

    Videocon

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    Controlling, Accounting

    Taxes, Auditing, ITTreasury Organisational Development

    & Management Resources

    White Goods &

    Outdoor ProductsNorth America

    Robert E Cook

    White Goods

    Europe & New

    Markets

    MatsOla Palm

    Outdoor

    Products

    outside North

    America

    Bengt Andersson

    Floor careProducts &

    Small Appliance

    Hans Straberg

    Indoor Products

    Detlef Munchow

    Outdoor Products

    Bengt Andersson

    CONSUMER DURABLES PROFESSIONAL PRODUCTS

    Communication

    & Public Affairs

    Legal

    President & CEO

    Videocon Organisation Structure

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    Name of Plant Shops

    Press shop

    Paint shop

    Vacuum forming shop

    Foaming area

    Pre-Assembly shop

    Final Assembly shop

    Process Flow Chart

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    Function Of different departments

    PRODUCTION DEPARTMENT

    1. To plan for the monthly & yearly targets of quality production for the year.

    2. To co-ordinate with Q.A, Purchase. Maintenance for achieving the targets.

    3. To achieve the average demerit value as prescribed for the year

    4. To reduce the scrap cost per refrigerator.

    5. To reduce the material consumable cost as per the value prescribed for the year.

    6. To increase the productivity.

    7. To solve day to day problems in production in various shops.

    8. To study the process for further improvement & modification for quality &

    productivity.

    9. To educate the Engineers, Staffs & Workers about quality

    10.To carry out preventive actions for the non-conformities.

    PLANT ENGG. DEPARTMENT

    1. Plan for optimum utilization of plant machinery to achieve production targets.

    2. Preparation of maintenance budget.

    3. Plan & execution of preventive maintenance schedule.

    4. To study & improve the working environment & conditions for critical

    machines.

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    5. Spare parts planning procuring &in degeneration of critical imported spares.

    6. Installation & erection of new machines.

    7. Plan & execution of block shut down on annual basis.

    8. Maintenance of utilities.

    9. Average break down % of plant to be 4.5% for the year.

    10.Plan & execute energy conservation in plant.

    11.To liaison & co-ordinate with the functionaries of government i.e. Rajasthan

    State Electricity Board, RIICO, Pollution Control Board & other deptt.

    12.To develop the concept of TPM (Total Preventive Maintenance).

    QUALITY ASSURANCE DEPARTMENT

    1. Process Monitoring through instruction with QA executives.

    2. Documenting trends in quality.3. Control of the nonconforming products authorized for taking deviations.

    4. Developing & implementation of plans for customer complaint resolution.

    5. To reduce call rate.

    6. Assessment of preliminary & on going process capability.

    7. To reduce de merit value.

    8. Monitoring inspection & testing at incoming, in-process & final stage.

    9. Co-ordination calibration of equipment.

    10.Co-ordination validation of inspection jigs & test status on product.

    11.Providing inspection & test status on product.

    12.To identity & implement statistical technical for process & product.

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    13.To verify the effectiveness of corrective & preventing actions.

    MATERIALS DEPARTMENT

    1. To identify the suitable vendors/suppliers for the procurement of BOM items,

    production consumables and indented items.

    2. Preparation of procurement schedule against P O to different vendors based on

    monthly material plan.

    3. To look after complete stores for the inventory and its proper storage accounting

    to take preventive measure in case of any shortage/excess.

    4. To prepare dispatch schedule plan as per monthly corporate logistic indent to

    send finished goods at different branches /locations in India.

    5. Liaison with private/union transport for in time dispatches

    6. To ensure correct physical availability of material finish goods as per bookbalance.

    7. To impart training to subordinate for the development purpose.

    DESIGN & DEVELOPMENT DEPARTMENT

    1. Design & Development of new products /models.

    2. Modification /Upgradation for existing product design.

    3. System design /Performance testing of refrigerator.

    4. Control of drawing specifications document & release of ECN.

    5. Prototype & model making for development /testing.

    6. Process support to shop floor.

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    7. Up gradation of product quality.

    MANUFACTURING ENGG.DEPARTMENT

    1. To formulate capital budget & investment plan.

    2. To identify machine capacity & man power planning.

    3. Selection of equipment & identification of suppliers for capital equipment.

    4. Procurement of Equipment & machines.5. Installation & commissioning of new machines.

    6. To design & provide material handling equipment for better productivity.

    7. To design moulds & tools for optimum production at vendors end.

    HR DEPARTMENT

    1. To maintain smooth & cordial industrial relation.

    2. Man power planning for & present requirement.

    3. To co-ordinate performance Appraisal/Review exercise.

    4. To organize for identification of training needs of both blue &White collar

    employees & preparation of Annual Training Calendar & implementation of the

    same.

    5. Organize recruitment as per approved standard force both for staff as well as

    workmen.

    6. To ensure all statutory obligations under the various provisions of the labor laws.

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    7. To ensure smooth functioning of all welfare activities.

    8. Responsible for the implementation of quality systems with regard to training.

    COMMERCIAL DEPARTMENT

    1. Responsible for Finance, Accounts, Costing, Excise & Administrative control of

    IT operation.

    2. Responsible for finalization of monthly reporting to corporate & Videocon

    Corporate Office.

    3. Responsible for finalization of annual accounts & tax audit.

    4. Responsible for annual budget preparation, monitoring of budget & profit

    improvement plan.

    5. Monthly variance analysis of budget & actual.

    6. Handling excise & sales tax.

    MAINTENANCE DEPARTMENT

    1.0 PURPOSE

    To establish and maintain a system for keeping all the machinery andequipment of plant in good working condition to ensure continuing process

    capability.

    2.0 SCOPE

    Applicable to all plant machinery and equipment including utilities, electrical

    installations used in the plant.

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    3.0 DEFINITION

    FH (PE) : Functional Head (Plant Engineering)

    Mnt. : Maintenance

    4.0 RESPONSIBILITY:

    4.1 Functional Head (Plant Engg) is overall responsible for proper functioning of

    all the machines and equipment of the plant. Respective Incharge

    (Maintenance) for the activities assists him.

    4.2 Incharge (Mechanical Maintenance), Incharge (Electrical Maintenance) and

    Incharge (Utilities) are responsible for maintenance related to their area ofactivities.

    4.3 Shift Incharge (maintenance) are responsible for maintenance during any

    particular shift.

    4.4 Individual responsibilities for specific activities are given below in

    description.

    5.0 DIFFERENT TYPE OF MAINTENANCE:

    5.1. Individual maintenance

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    5.1.1Identify the key machines / equipments, which affect quality and to be covered

    under maintenance Maintain a List of the identified machines / equipments

    5.1.2

    Decide the jobs / activities to be carried out and the frequency for themaintenance based on information given in machine manuals and/or previous

    history of Breakdowns. Discuss the same with respective Incharge(s) of

    Maintenance.

    5.1.3

    Decide the jobs / activities to be carried out and the frequency for the

    maintenance based on information given in machine manuals and/or previoushistory of Breakdowns. Discuss the same with respective Incharge(s) of

    Maintenance.

    5.1.4

    Based on the above, prepare Annual Maintenance Schedule for electrical,

    mechanical and utilities.

    5.1.5

    Ensure recording of various checks parameters of DG set, air compressors,thermopac, and RO plant in respective logbooks. The control parameters for

    each operation are as per specification sheets.

    5.1.6Maintain list checksheets for each category of machines and equipment.

    5.1.7

    Periodically examine Maintenance Schedule and inform the concerned

    Maintenance Crew for carrying out Preventive Maintenance activities as per

    relevant checklists.

    5.1.8

    Get Checklist from respective Incharge (Maint.) and carry out all activities as

    given in checklist.

    5.1.9

    Inform the activities carried out including earlier slippage if any, to respective

    Incharge (Maint.) who updates the Maintenance Schedule.

    -do-Nil

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    5.1.10

    If any of the maintenance activities are not carried out as per schedule /checklist, enter the details in maintenance log book/ utilities logbook for

    inclusion next time.

    5.1.10.1

    Review the maintenance log book and make necessary arrangement for re-

    scheduling the maintenance activities at next available opportunity. Monitor

    them for accomplishment.

    5.1.11In case any major replacement / repairs are carried out, enter the details inMachine History Card

    5.1.11.1

    Review the machine history card once in every six months. If required, change

    the preventive maintenance frequency and inform respective Incharge (Mnt.)

    accordingly.

    5.2

    Predictive Maintenance

    5.2.1

    Take a round of the plant daily in the General Shift and examine the condition of

    machines / Equipments.

    5.2.2Inform the abnormality observed if any to concerned Section Incharge and

    request for sparing the machine for needful

    5.2.3

    In case the machine can not be spared due to urgency of production but the same

    can work, record the observations in maintenance log book/utilities log book.

    -do-

    L01-0910

    L02-0910

    5.2.4

    Periodically examine the maintenance/utilities log book and get it corrected on

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    5.3

    Breakdown Maintenance

    In order to attend the breakdowns in most effective manner & in the shortestpossible time the following procedure is adopted.

    5.3.1

    On receipt of complaint (by verbal / written) from user deptt. Depute technician

    for carrying out necessary repairs

    5.3.2

    Identify the nature of defects & arrange repair.

    5.3.3

    In case of problems beyond control consult shift incharge / Engineer & arrange

    repair / rectification as directed.

    5.3.4

    When ever required, procure materials from stores by raising demand & issue

    slip after getting authorization from shift incharge.

    5.3.5

    In case of low / no stock raise Purchase Requisition whenever required.

    5.3.6

    In case the machinery / equipment is to be sent outside the factory for repairs put

    up the requisition for out going material after authorization from FH (PE).

    5.3.7

    After completion of repairs and satisfactory operation enter details in

    maintenance / utilities log book.

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    5.3.8

    Maintain a list of essential spare parts with minimum stock level required forsmooth operation.

    List Authorized by FH (PE)

    5.3.9

    Interact with maintenance purchase Incharge & maintenance store Incharge to

    ensure the availability of minimum stock as required.

    5.4

    5.4.1

    Compile machine Breakdown time for the month of all area of activities

    including Breakdown Analysis (i.e. causes).

    5.4.2

    Discuss the Machine Breakdown Trend Chart in Management Review Meetings

    and take suitable corrective measures to meet as well as improve upon the laid

    down objectives.

    5.4.3Submit Monthly Utility Report to management about generation and

    consumption of energy and fuels.

    5.4.5

    Submit maintenance overtime report to the management about manpower

    utilization.

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    Scope of Study

    Study of PLC System at Videocon, Various Frequency Drives use and their

    programming, Power Supply, SCADA Package for MIMIC programs used for datatransfer to PLC, Communication and Networking of PLC.

    Following PLC Systems study in respect to their Operating Software, Hardware,

    and Programming of Small PLC Logic and necessary modification in existing

    Programs along with trouble shooting in PLC System

    Siemens PLC with S5 Series

    Seimens S7 (Micro Series) PLC Series

    Siemens S7 (Modular Series) PLC series

    Along with PLC system study of Various Frequency Drive i.e. Micro Master

    Inverters with following scope of Study

    Introduction of Frequency Drives Hardware

    Programming of Frequency drives as per requirementFunction and Operation of Frequency drivesApplication

    Type of Frequency of Frequency Drives

    Siemens Micro Master from 0.5 HP to 3.0 HP

    Siemens Micro Master Vector Drive 3.0 HP

    Omron Inverter 0.5 HP

    Power Supply

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    PLC are manufactured by the SEIMENS in 2 version they are -:

    S5S7

    Further S7 has 2 versions -:200 (Micro Series)

    300 (Modular Series)

    Depending on the number of the input modules connected to the PLC

    The languages been used

    LAD-ladderCascade Statement Function CSF

    STLstatement line

    We have interfacing of the plc to the pc or vice versa through different modes

    TTY-text to text interface (interface between single pc to single plc)

    PPI- point to point interface (connections of different pc to a number of plc)

    MPI-multiple point interface (connection of number of plc to more than one plc)

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    Project on S5 Series PLC

    At Videocon one of machine named as MARISTED-1 Used to Cabinet Foaming forRefrigerators having S5 Series PLC used for the Automatic control of the machine.

    This machine program required to be modified to avoid accident in machine

    because of malfunctioning of Input devices (Limit Switches) and to ensure smooth

    trouble free operation of Machine

    Machine PLC Details

    MRSDT1Power Supply-AC 230V/115V

    DC 24V 2A

    SIEMENS S5-100U

    CPU 103

    DI 8X24V DC- 10 in no.DO 8X115/230V AC /0.5 A10 in no.

    Problem

    During the transfer of Foamed cabinet fixture from foaming station to insidecarriage Insider carriage should be in backward position. But sometimes when this

    carriage is at forward position and because of Foam or otherwise Limit Switch

    might got stuck-up in backward position, It will give false input to PLC and both

    Inputs of Carriage forward & Backward will be available to PLC. This causes

    fixture transfer without carriage and causes damage to cylinders and major Accident

    occurs

    Introduction of S7 (Micro Series) PLC

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    The S7-series is a line of micro-programmable logic controllers (micro PLCs) thatcan control a variety of automation applications. Its a compact design,

    expandability, low cost and powerful instruction set make the S7-200 controllers aperfect solution for controlling many applications In addition, the wide variety of

    CPU sizes and voltages provide you with the flexibility you need to solve yourautomation problems. The S7-212/213/214/215/216 CPUs combine a central

    processing unit (CPU), power supply, and discrete I/O points into a compact, standalone device. The CPU executes the program and stores the data for controlling

    the automation task or process. The power supply provides electrical power for the

    base unit and for any expansion module that is connected.

    The inputs and the outputs are the system control points: the input monitors

    the signals from the field devices (such as sensors and switches), and the outputs

    control pumps, motors, or other devices in your process.

    The communication port allows you to connect the CPU to a

    programming device or to other devices. Status lights are been provided to provide

    visual information about the CPU mode (RUN or STOP), the current state of the

    local I/O, and whether a system fault has been detected.

    The S7 Micro Series programming software offers powerful programming and

    debugging tools which make you more effective and this means cost savings.

    We use the programming in the same manner as the Windows applications User

    programs are written using simply mouse clicks, tool bars, or simply drag & drop

    operations .It have the following properties: -

    4 or 6 independent hardware counters at the rate of 30 kHz each for interfacingto incremental encoders or high-speed pulse trains.

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    4 independent interrupt input with 0.2ms input filter times to adjust reactiontimes for maximum process response.

    2 high speed pulse outputs at the rate of 20khz each either pulse widthmodulation or pulse train output , e.g. for control of stepper motor , drives or

    temperature .

    High-speed analog inputs signal conversion with 25micro seconds, 12 bitresolution.

    Real time clock.

    2 timed interrupts (adjustable from 1ms in intervals of 1 ms) for precise controlof processes that change over time.

    EEPROM CARTRIDGE

    A small optional EEPROM cartridge saves significant time and money.

    We can use it easily copy, update or replace your applications program on your S7-200 CPU.

    And if required, one can mail a program rapidly and at a low cost, using the

    cartridge. Simply turn off the power and the user program is updated in a flash.

    BATTERY CARTRIDGE

    To guarantee that applications data are never lost , the optional battery module

    permits long term backup for typically 200 days beyond the internal backup of 5

    days .

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    REAL TIME CLOCK

    Whether we require it to count operating hours, preheat rooms or provide timestamps for messages; the real time clock of the S7-200 is software controlled to

    provide exact seconds and dates even taking leap years into account.

    ANALOG POTENTIOMETERS

    With the S7200 s analog potentiometers we can optimize our process by means

    of a screwdriver. We can set memory values, timer values, counter presets or other

    variables without

    Introduction of Siemens S7 (Modular Series) PLC

    Siemens has introduced a mini PLC in the PLC family. It is an ideal choice

    when the job calls for something fast and powerful. It has a program memory for up

    to 16k statements, 1024 digital inputs and outputs and an MPI interface forprogramming devices and operator panels. The speed of the PLC of CPU, the most

    powerful one is 0.3ms to process 1024 binary statements It holds an incredible 256

    digital i/os in addition to the CPU. Every module has 16/32 isolated channels.

    The S7-300 needs a 24v DC power supply. This is provided by load

    current supply modules, which convert the 120/230v AC line voltage to the 24v DC

    operating voltage.

    The S7-300 series is the is an advance version of the S5 series .The additions havebeen made to the programming languages Statement List, Ladder Diagram and

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    Functional block Diagram. The instruction set can be used in all blocks and in all

    programming languages.

    S7-300 has central data storage and a perfectly matched suite of individual

    functions. This means that we need to enter only the data once, at a single userinterface. And we can use the same functions for every task. From configuring and

    programming to startup and documentation. We can write the program in any

    language and switch from one to another as we want.

    S7-300 consists of the following components-:

    1. Power Supply (PS)2. Central Processing Unit(CPU)3. Signal Modules(SM)

    4. Function Modules(FM)

    5. Communication Processor (CP)

    Power Supply (PS):

    It converts line voltage (230 V ac/115V ac) into 24v dc which provide

    power to S7-300 it is switching mode power supply

    Central processing unit (CPU):It has a central processing unit CPU which takes merely .3ms to process

    1024 binary statements and it is equally good at word oriented processing .The

    system include a number of CPUs FOR different performance requirements.

    CPU executes the user program provides the 5V supply for the 5v supply for the S7-300 back plane bus. It communicates with other modes by MPI (multi point

    interface).

    Communication Processor (CP):

    It means how to interface PLC to PC or PC to PLC. We also interface other

    devices to PLC.

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    We can interface it by three ways

    1. MPI2. PPI

    3. TTY

    In S7-300 we use MPI for interfacing. In communication process we use twotypes of connector:

    1. RS485 PLC)

    2. RS232 (PC)

    Every module has 16/32 channels; it can be increased till 250 digital I/O

    INVERTER (Frequency drive)

    Inverter is a frequency drive used to invert the A.C. to D.C. and control the rpm of

    AC motors by variable frequency. The drive converts the phase from single phase to

    three phase if the power supplied is in single phase .These inverters are microprocessor controlled A special pulse width modulation

    with selectable pulse frequency permits extremely quiet motor operation.

    Microprocessor is available for reliable and flexible control. Remote control

    capability is also used to control inverters. It has a builtin non-volatile memory forstoring parameter settings. Output frequency can be controlled by one of the five

    methods -:

    Digital frequency setpoint

    Analogue setpoint

    Potentiometer

    Fixed frequencyRemote data transmission

    The inverter has a built in dc injection brake which stops the motor by

    applying a DC current, this causes heat to be generated in the motor rather than the

    inverter and holds the shaft stationary until the end of the braking period. Braking is

    effective for the period of time set.

    But the frequent use of long periods of DC injection braking can cause the motor to

    overheat. Automatic load compensation is done by flux current control.

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    The Power supply is supplied in single phase or in three phases and has an output

    always in three phases, so a 4 core wire is used for connection..

    Following are the specifications of the inverter -:

    Input frequency47 Hz to 63 HzPower factor - >=0.7

    Output frequency0 Hz to 650 Hz

    Resolution0.1

    Overload capacity150% for 60 s, related to nominal current

    Protection againstinverter overtemperature

    Motor overtemperature

    Overvoltage and undervoltage

    Additional protection Against short circuit and earth/ ground faults pullout

    protection

    Protection against running with no load.

    Regulation and controlFCC (flux current control) voltage /frequency curve

    Ramp times-0-650s

    Invert efficiency97%

    Operating temperature0 c to +40c

    Parameters can be changed and set using the membrane-type buttons to adjust the

    desired properties -:

    Parameter-

    P000

    Its function is to operate the display. This displays the output selected in P001 .In

    the event of a faliure the relevant error message is displayed .In the event of a

    warning the display flashes .If output frequency has ben selected (P001=0) the

    display alters between the selected frequency and the actual frequency.

    P001

    Its function is to display selection .0-7 Numbers are used for display selection

    0-output frequency

    1-speed at which inverter is set

    2-motor current

    3- DC-link voltage

    4- motor torque

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    5-Motor rpm

    6-uss status7-closed loop display mode

    P002

    Ramp up time is the function done by this parameter, which is the time taken by the

    motor to reach the maximum frequency from the standstill condition, Its range is

    from 0-650 sec.

    P003

    Ramp down time, it is the time taken to decelerate from maximum speed to

    minimum standstill position.

    P004

    Its function is to smooth the acceleration /deceleration of the motor.

    P005

    Digital frequency set point0-650.00

    P006

    Frequency set point type selection0-2

    0- digital1- 1-analogue2- fixed frequency or motor potentiometer

    P007Enable /disable front panel buttons

    0-1

    0-run, jog and reverse are disabled

    1-front panel buttons can be selected

    P009

    Parameter protection setting

    0-3

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    0- only parameters from P001P009 can be read / set

    1- all the parameters can be read and P001-P009 can be set2- all the parameters can be read /set but P009 is automatically set to zero when

    power is removed3- all can be read/set

    P010

    Display scaling

    P011

    Frequency setpoint memory

    0-1

    0-disable

    1-enable after switch off

    P012

    Minimum motor frequency

    0-650

    P013

    Maximum motor frequency

    0-650

    P015

    Automatic restart0-1

    0-disable

    1- automatic restart

    P016

    Start on the fly

    0-4

    Allows the inverter to start on to a spinning motor, to avoid overcurrent trip.

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    P017Smoothing type

    1-21- continuous smoothing2- discontinuous smoothing

    P018

    Automatic restart after fault

    P021Minimum analogue frequency

    0-650

    P022

    Maximum analogue frequency

    0-650

    P023

    Analogue input type

    P024

    Analogue setpoint addition

    P025

    Analogue output

    P031

    Jog frequency right (Hz)

    P032

    Jog frequency left (Hz)

    P033

    Jog ramp up time

    P034

    Jog ramp down time

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    P0411

    stfixed frequency

    P042

    2nd

    fixed frequency

    P043

    3rd

    fixed frequency

    P044

    4rth fixed frequency

    P045

    Inversion fixed setpoints for fixed frequencies

    P046

    5th

    fixed frquency

    P047

    6th

    fixed frequency

    P0487

    thfixed frequency

    P049

    8th

    fixed frequency

    P050Inversion fixed setpoints for fixed frequencies

    P051

    Selection control function , DIN1

    P052

    Selection control function , DIN2

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    P053Selection control frequency,DIN3

    P054

    Selection control function , DIN4

    P055

    Selection control function , DIN5

    P061

    Selection relay output RL1

    P062

    Selection relay output RL2

    P063

    External brake release delay

    P064

    External brake stopping time

    P065

    Current threshold for relay

    P070

    Braking resistor duty cycle

    P071

    Slip compensation

    P072

    Slip limit

    P073

    DC injection braking

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    P074Motor derating curve as temperature protection

    P075

    Braking resistance

    P076

    Pulse frequency

    P077Control mode

    P078

    Continuous boost

    P079

    Starting boost

    P081Nominal frequency for motor

    P082

    Nominal speed for motor

    P083

    Nominal current for motor (A)

    P084

    Nominal voltage for motor (V)

    P085

    Nominal power for motor (kW)

    P086

    Motor current limit

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    P087Motor PTC enable

    P088

    Automatic calibration

    P089

    Stator resistance

    P091

    Slave address

    P092

    Baud rate

    P093

    Time out

    P094

    Serial link nominal system setpoint

    P095

    USS compatibility

    P101Operation for Europe or USA

    P111

    Inverter power rating (kW/hp)

    P121Enable /disable RUN button

    P122

    Enable/disable FORWARD/REVERSE button

    P123

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    Enable /disable JOG button

    P124

    Enable /disable

    P131Frequency setpoint

    P132

    Motor current

    P133

    Motor torque

    P134

    DC link voltage

    P135

    Motor RPM

    P201

    Closed loop mode

    P201

    Proportional gain

    P203

    Integral gain

    P204

    Derivative gain

    P205

    Sample interval (x25ms)

    P206

    Sensor filtering

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    P207

    Sensor reading

    P2110% setpoint

    P212

    100% setpoint

    Minimum frequency mode

    P720

    Special input /output functions

    P721

    Analogue input voltage

    P722

    Analogue output current

    P723

    State of digital inputs

    P724

    Relay output control

    P910Local/Remote mode

    P922

    Software version

    P923Equipment system number

    P930

    Most recent fault code

    P931

    Most recent warning type

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    P944Reset to factory default settings

    P971

    EEPROM storage control

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