Segger & Phoenix Contact & Ezautomation PLC Programmable Logic Controller Suppliers in Sydney

Question 1

What is a PLC and what are its functions?

Answer

A PLC, or Programmable Logic Controller, is a specialized computer used in industrial automation and control systems. It is designed to monitor and control various processes and machinery in manufacturing, production, and other industrial settings.

The main function of a PLC is to receive input signals from sensors and other devices, process them according to a pre-programmed set of instructions, and then send output signals to control various machines and equipment. This allows the PLC to automate and optimize various industrial processes, such as assembly line operations, temperature and pressure control, and material handling.

PLCs are also designed to be highly reliable and rugged, with built-in safety features to prevent accidents and protect workers. They can be programmed using various programming languages, such as ladder logic or structured text, and can be easily reprogrammed or adapted to changing production needs. Overall, PLCs play a crucial role in modern industrial automation, enabling companies to improve efficiency, reduce costs, and enhance safety in their operations.

Question 2

What are the different types of PLCs available in the market?

Answer

PLCs, or Programmable Logic Controllers, are used to control and automate industrial processes. There are various types of PLCs available in the market, each with its own unique features and capabilities. Here are some of the different types of PLCs:

Modular PLCs: These are highly flexible and customizable PLCs that are easy to expand and upgrade. They consist of a central processor unit and various input/output modules that can be added or removed as required.
Compact PLCs: These are smaller and more economical PLCs that are designed for simpler automation tasks. They have fewer input/output channels and are ideal for applications that require less complexity.
Rack-mounted PLCs: These are large, high-end PLCs that are suitable for complex automation tasks. They are typically used in industries such as manufacturing and process control.
Safety PLCs: These are specifically designed for applications that require high levels of safety and reliability, such as in the automotive and aerospace industries. They have built-in safety features that ensure safe operation of equipment and machinery.
Distributed PLCs: These are PLCs that are connected to a network and can communicate with other devices and systems. They are often used in large-scale automation applications, such as in oil and gas refineries.
Embedded PLCs: These are PLCs that are built into other devices, such as robots and CNC machines. They provide control and automation capabilities to these devices, without the need for a separate PLC.

Overall, the type of PLC you choose will depend on the specific automation tasks you need to perform, as well as your budget and other requirements.

Question 3

What are the factors to consider when choosing a PLC?

Answer

When choosing a PLC (Programmable Logic Controller), there are several factors to consider:

I/O requirements: What are the input and output requirements of your system? This will help determine the number of I/O points needed and the type of I/O modules required.
Processing speed: How fast does your system need to operate? The processing speed of the PLC will affect the system's overall performance.
Memory capacity: How much memory is needed to store the program and data? This will depend on the complexity of the system and the amount of data that needs to be stored.
Programming language: What programming language is used by the PLC? It's important to choose a PLC that uses a language that is familiar to the programmer or is easy to learn.
Communication protocols: What communication protocols are needed to communicate with other devices in the system? The PLC should support the necessary protocols to ensure seamless communication.
Reliability: How reliable is the PLC? It's important to choose a PLC that is reliable and has a good track record in the industry.

Cost: What is the budget for the project? PLCs can vary in price, so it's important to choose one that fits within the budget while still meeting the system's requirements.

Question 4

What are the programming languages for PLCs?

Answer

PLCs can be programmed using several programming languages, including:

Ladder Logic: This is the most common programming language used in PLCs. It is a graphical language that represents the electrical circuits used in relay logic.
Function Block Diagram: This language uses graphical blocks to represent functions and their relationships.
Structured Text: This language is similar to programming languages used in software development. It uses text-based instructions and allows for more complex programming.
Sequential Function Chart: This language is used to specify the order of operations for a process.
Instruction List: This language uses a simple list of instructions to program the PLC.
C/C++: Some PLCs allow programming in C or C++, which is useful for more complex programming tasks.

Overall, the choice of programming language depends on the specific requirements of the application and the personal preferences of the programmer.

Question 5

What are the brands of PLCs available in Australia?

Answer

There are several brands of PLCs available in Australia, including:

Allen Bradley: A leading brand in the PLC industry, offering a range of controllers and software solutions.
Siemens: Another popular brand that offers a wide range of PLCs, HMIs, and other automation products.
Schneider Electric: A global brand that offers a range of PLCs, including Modicon and Telemecanique.
Mitsubishi Electric: A well-known brand that offers a range of PLCs, HMIs, and other automation products.
Omron: A trusted brand that offers a range of PLCs, including the popular CJ and CS series.
ABB: A global brand that offers a range of PLCs and other automation products.
Delta Electronics: A Taiwanese brand that offers a range of PLCs, HMIs, and other automation products.
WAGO: A German brand that offers a range of PLCs and I/O systems.

These are just some of the many brands of PLCs available in Australia. The choice of brand will depend on the specific requirements of the application and the budget of the user.

Question 6

Can PLCs be integrated with other automation devices?

Answer

Yes, PLCs can be integrated with other automation devices to create a complete automation system. PLCs can communicate with a variety of devices, including sensors, actuators, human-machine interfaces (HMIs), robots, and other controllers. This allows for a seamless exchange of data and control signals between different components of the automation system, enabling efficient and effective operation. Integration with other devices is essential for PLCs to perform their functions in a modern industrial environment, where automation systems are often complex and highly interconnected.

Question 7

What is the cost of a PLC and what are the additional expenses?

Answer

PLC (Programmable Logic Controller) costs can vary depending on the size, features, and complexity of the system needed. Generally, the cost of a basic PLC can range from $200 to $2000.

In addition to the cost of the PLC itself, there may be additional expenses such as software, programming cables, and mounting hardware. The cost of installation and maintenance should also be considered.

Overall, the cost of a PLC and associated expenses will depend on the specific needs and requirements of the system. It is recommended to consult with a qualified professional to determine the most suitable and cost-effective solution for your particular application.

Question 8

What is the warranty period for a PLC?

Answer

The warranty period for a PLC (Programmable Logic Controller) varies depending on the manufacturer and model. Typically, PLCs come with a standard warranty period of one to two years, but some manufacturers may offer longer warranties or extended warranty options for an additional cost. It is important to check the warranty terms and conditions before purchasing a PLC to ensure that it meets your needs and expectations. Additionally, it is recommended to purchase PLCs from reputable manufacturers and distributors to ensure quality and reliability.

Question 9

What is the support and maintenance provided by the supplier or manufacturer?

Answer

These services may include technical support over the phone or email, on-site troubleshooting and repairs, software updates and upgrades, training and education programs, and warranty and repair services. Some suppliers may also offer preventative maintenance programs to help customers minimize downtime and maximize the lifespan of their PLCs. It is important to check with the specific supplier or manufacturer for details on their support and maintenance offerings, as they may vary based on the specific product and service package purchased.

Question 10

How can I learn to program a PLC?

Answer

PLC programming can be learned through various resources such as online courses, textbooks, tutorials, and hands-on experience. Some recommended steps for learning PLC programming are:

Understand the basics of PLCs: It is important to have a basic understanding of what a PLC is, how it works, and its applications.
Choose a programming language: PLCs can be programmed using different languages such as ladder logic, structured text, function block diagram, and sequential function chart. Choose a language that suits your project requirements.
Get familiar with the software: PLC programming software is used to create programs and simulate the PLC operation. Get familiar with the software and its features.
Learn programming concepts: Learn programming concepts such as variables, data types, logic gates, timers, counters, and loops.
Practice programming: Practice programming by creating simple programs and gradually moving to complex ones.
Collaborate with others: Collaborate with others who are experienced in PLC programming to learn from them and get feedback on your work.
Keep learning: Keep yourself updated with the latest trends and technologies in PLC programming.

By following these steps and continuously learning, you can become proficient in PLC programming.

Question 11

What is a (PLC) programmable logic controller?

Answer

In its most simplistic form, a PLC can be likened to the conductor of an orchestra with all manner of instruments – woodwind, strings, percussion and brass – to coordinate into a cohesive concerto of sound. It’s the conductor’s job to trigger each section of the orchestra into action at precise moments in order for that concerto to make harmonic sense.

Replace the conductor with a PLC and the orchestra with a bunch of machines on a production line and the basic principle is the same. A PLC makes sure each of those machines jumps into action at the right time in order to produce a fully automated and highly precise end product. PLCs are basically digital devices containing pre-programmed memory designed to issue instructions to a suite of machines in a synchronized manner over and over.

Question 12

What are the types of programmable logic controllers?

Answer

Compact PLC. Compact PLCs are complete systems in a single, compact case. While limited, they can be a good option for smaller operations where the number and types of inputs and outputs are fairly standard and can be preset by a manufacturer.
Modular PLC. A step up from compact PLCs, modular PLCs offer more versatility in size power levels and overall capability in a single rack.
Small, medium and large PLC options. Built to suit everything from small businesses to heavy industry, these PLCs generally come with central processing unity, an input and output section, a power supply and either rack or mounted options. They can also be customized to suit specific processes.

Question 13

What programs do programmable logic controllers use?

Answer

A PLC will use either an operating system or a user program.

An operating system runs automatically and doesn’t need any direct operator commands to run systems.
A user program allows an operator much more hands-on control of outputs.

Question 14

What must be considered when choosing a PLC?

Answer

How large is your operation?
How complex is your operation?
Does the complexity of your processes call for a smaller, more standard PLC case?
Does the complexity of your processes call for a large unit with more versatility and power?
Do you prefer a fully automated operating system or a more operator-driven user program?

Question 15

How much does a programmable logic controller cost?

Answer

The cheapest is about $100 and the most expensive is around $570, but the average price for a programmable logic controller is a little over $280.

Question 16

What are common problems with a programmable logic controller?

Answer

Without due care and attention, programmable logic controllers can become spectacularly illogical. The good news is that assessing any issues with a digitally intelligent device like a PLC is a lot easier than troubleshooting a tractor.

These are the main things that cause issues in PLCs:

Input or output failure.
Electrical noise interference.
Corrupted memory.
Power issues.
Communication issues.

Question 17

What type of maintenance does a programmable logic controller require?

Answer

PLC maintenance is ongoing and essential to ensure smooth operation and no production-killing hiccups.

Maintain your PLC’s working environment. That means keeping temperature and humidity levels within the ideal range for your PLC.
Keep the area dust free.
Keep the PLC unit and circuit boards free of dust and debris.
Clean all enclosure filters and replace if necessary.
Check all connections for potentially damaging looseness and tighten if needed.
Check I/O devices are correctly adjusted.
Check LED battery indicators. Replace batteries if necessary.