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TP ELEKTRONIKA MODUL 4
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Modul 3 Praktikum Elektronika Industri
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Modul Praktikum elektronika industri dapat di download disini .17.27 Elektronika Industri , Post , Praktikum 0 Comments
Modul 2 Elektronika Industri
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Modul Elektronika Industri silahkan di download via mediafire atau via google drive
Profil Laboratorium Sistem Otomasi dan Robotika Teknik Industri Universitas Trunojoyo
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Programmable Logic Controllers (PLC)
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Programmable Logic Controller
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In this module you will be introduced to a controller called a PLC. The initials PLC stand for programmable logic controller. A PLC is often used as the "brain" in a wide range of modern controlled systems.
A PLC is essentially a low level computer capable of interfacing with field instrumentation to read input data and control output data. PLCs can generally be programmed from a PC, typically using ladder logic, sequential function charts, and/or structured text.
In some cases, PLCs are connected to a central control computer. Each PLC works independently to control its assignment while feeding information back to the central computer.
PLC's form the basis of what is known as "distributed control". Just as computer systems have migrated away from large mainframe computers, control systems have distributed the "decision making" to PLCs (smart control nodes).
Programmable logic controllers take real world inputs from sensors and convert these inputs into electrical signals. These signals update an input table in the "computer".
An I/O board provides the communucation link between the processor and the sensor. The input signals are used to determine which outputs are to be turned on and off.
The PLC in the Modern Industrial World
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Programmable Logic Controller
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These small units are microprocessor-based and contain non-volatile memory locations (memory that maintains data storage when power is removed) that contain specific instructions programmed by a user for a given application. A PLC can control a wastewater pumping facility for the utility department in a city, while another PLC in a nearby factory controls a smelting furnace.
PLCs are used to control processes that need feedback in order to create consistency. For example, in the Janesville WI, General Motors Truck Facility, programmable logic controllers are used in the body shop to interface with robots, sealing equipment, and automated hard tooling that welds the sheet-metal body of a Suburban Utility Vehicle together.
- Hard Welding Automation
- Flexible Manufacturing Systems
- Sealing Applications
- Fluid Fill Systems
- Facility Monitoring Systems
Hardware Tasks
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Programmable Logic Controller
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If you have access to the PLC Trainer System with the Allen-Bradley SLC 500 PLC controller, click Start A/B SLC 500 Hardware Tasks below.
If you do not have access to hardware, click Skip Hardware Tasks below.
Safety Guidelines
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Programmable Logic Controller
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All necessary hardware installation and wiring connections are to be performed by the laboratory instructor or system manager.
Be sure to heed the following safety guidelines:
- Position PLCLine on a stable table. Make sure the PLCLine is placed on the table at least 18 inches away from the table edges (in all four directions).
- All necessary hardware installation and wiring connections are to be performed by the laboratory instructor or system manager.
- Make sure the power supply and the Allen Bradley PLC are connected to the rated power supply.
- Ensure that 24VDC is not shorted to ground when connecting wires. Doing so will blow the 24V/4A fuse. It is strongly recommended that a circuit diagram be prepared before making an actual connection.
- Do not touch or tamper with the DC motor unit, especially when it is in motion.
- Do not tamper with the solenoid or limit switch units.
- To immediately halt all system operation, switch OFF the power supply.
- Make sure hands, hair and clothing are securely away from the motor working area.
- Maintain a clean work area at all times.
- Keep food and drink away from the workcell.
- Always read the directions completely before doing a task.
- If you are unsure of the operation of a system, talk to your instructor before operating the equipment.
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