Plc Based Laser Control Unit
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Transcript of Plc Based Laser Control Unit
PLC BASED LASER CONTROL UNIT
Team Members Guided byY. Brahmananda Reddy -09L21A04A2 K. S. MD .Musa MohinuddinY. Surendranath Reddy -09L21A0499 M.Tech,(PhD)P. Sudharshan -09L21A0468 V. Balaji -09L21A0494P. Venkatesh -09L21A0470P. Praveen Kumar -08L21A0498
ContentsAbstractIntroductionExisting SystemProposed System System HardwareSystem SoftwareConclusion
Abstract•The ‘change’ in any field is common and it is very quick and rapid in case of Technological field•To the industries it is crucial because of ‘competition’ and ‘cost’ involved in it.•The LASER production and its ‘control require’ very necessary adoption to new technology. •The use of anlogue circuits in this LCU is not much of good productivity•So we use plc in this control unit instead of anlogue circuits.
IntroductionThe LCU is very important part in the accurate production
of LASER. Laser control unit (LCU) is a PLC based system used to
monitor & control 9 kHz Pulsed Power Supply system for generating high voltage pulses for short duration.
Block DiagramDELAY GENERATOR
UNIT
AUXILIARY POWER SUPPLY
PULSE GENERATOR UNIT
LASER HEAD
LASER CONTROL UNIT
DISTRIBUTION UNIT
SMPS
REMOTE COMPUTERREMOTE COMPUTER
CONNEXIUM TRANSCEIVER
FIG: Block Diagram of LCU connected with other blocks
The LCU is connected to Distribution unit through 52 Pin Connector.
LCU is interfaced with SMPS using 3 FC to SMA patch cords for SMPS O/P Voltage, Current and Voltage Setting.
Connexium Transceiver is used to convert Electrical signal to optical signal.
V/F & F/V
CONV PCB
TERMINAL BLOCKS
PS MODULE CPU DI1 DI2 DO1 DO2 AI1 AI2 AO1
LCU LED PCB
RL1 RL2 RL3 RL4 RL5
MODICON M340 PLC
RELAYS
SPLIT PUSH BUTTONS
FIG: Assembly of Laser Control Unit
Existing System
FIG: An Example of an Analague Circuit
The LASER Control Unit (LCU) is a very high complex control unit where it has to control several parameters very carefully
The use of advanced technology devices is very important according to the changes in the field.
The normal Analogue Circuits and Relays cannot be changed as required.
DisadvantagesSize of analogue circuits is large.Cannot with stand in harsh conditions such as vibrations,
temperature, humidity and noise.Once fabricated changes cannot be made much.Programming cannot be done.Replacement with new ones requires more time and
money
Proposed System
FIG: An example of PLC
The proposed system is the use of PLC’s in the automation technology instead of ANALOGUE CIRCUITS
WHAT IS PLC?A Programmable Logic Controller, PLC or Programmable
Controller is a digital computer used for automation of electromechanical processes, such as control of machinery on factory .
A PLC is an example of a hard real time system
PLC are programmed using languages like Ladder Logic, Functional Block Diagram, e.t.c.,
The capabilities of some modern plc’s is equivalent to desktop computers.
PLC applications are typically highly customized systems.
The cost of a packaged PLC is low compared to the cost of a specific custom-built controller design.
System HardwareModicon M 34052 pin connectorRelaysConnexium TransceieverLCU led pcb
Modicon M 340
FIG: MODICON M 340
1 2 3 4 5
1. Power Supply2. Processor3. Digital Input Module4. Digital Output Module5. Analogue Input and Output Module
LCU LED PCBLH
CW FLOWPGU
CW FLOWSMPS
CW FLOW
LH TEMP PGU OIL TEMP LH IN OSITION
NOR LOW NOR LOW NOR LOW
NOR HIGH NOR HIGH YES NO
MAINS ON TRIG ON LOCAL REMOTEOPERMODE
CONDMODE
FIG:LCU LED PCB
System SoftwareUnity Pro Software:
Hardware PlatformsModicon M340PremiumAtriumQuantum
Languages Supported:Function Block Diagram FBDLadder Diagram (LD) languageInstruction List ILStructured Text STSequential Control SFC
Ladder Logic
FIG: An example of Ladder Logic
The dark lines on the ends are power linesCoils are outputsContacts are inputs
Future Enhancement Since the PLC’s are mainly used in applications because
of it’s ability to adopt the new technology and to make changes in future. The improvement to be done in LCU for further applications can be easily done along with changes for PLC.
Conclusion Even though the PLC’s are used mainly in industries and
in customized applications such as LCU, the potential of PLC is very high that it may find its place in future in all basic needs and home appliances.
THANK YOU