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PLC Panels

The PLC stands for Programmable Logic Controller. The PLC opens the door for an entire another world of PLC automation, intelligence, control, communication, a high-performance industrial computer that receives various form signal inputs, process them at the hardware level and processes them according to the application program and delivers the outputs.

PLC is a state-of-the-art programmable state machine that executes the process according to the program image and a process image. It is a testament to the progress of modern control engineering. Essentially it has the computing and control capability based on logic, scientific, mathematical and engineering functions.

PLC panel involves a lot of engineering effort to arrive at the best match for control, quality, reliability, safety, level of automation of the process and economics. It involves a lot of planning based on the process knowledge, physical signal input/ output classification, their operating voltage, current, behavior, limitations, engineering data types, security, access control, and communication networks. It involves the overlapping standards that govern the electrical, electronic, network, cyber security systems, industrial control systems, safe manufacturing, continuous, batch control standards.

The panels are manufactured standards mentioned above and operating environment specifications such as general, industrial, and hazardous condition. Also, the panels are manufactured on a central or distributed control needs.

Following are some of the Canadian and international standards that apply to industrial control panels

• UL 508A
• CSA C22.2 No. 14
• CSA C22.2 No. 286
SPE-1000 Model Code
• National Electrical Code (NEC)
• IEC 60947
• IEC 60204
• IEC 61439-1/-2
• EU Directives (EMC, Low Voltage, Machinery, RED, and ATEX directives)

Flame proof panels need to meet IECEx/ATEX requirements for Zones 1 and 2

At Solution Control Systems we build a variety of PLC panels for a number of industries including but not limited to refrigeration, compression, plant process automation, wastewater, machine automation, manufacturing etc. We have built panel literally from few I/O’s to hundreds of I/O’s. Our experience includes both design and build or just build. We have experience in major brands like Allen Bradley, Schneider and Siemens, All the wiring is kept neat and tagged properly for ease of maintenance and reliability. We take pride in our work and ensure each and every panel is built with integrity Proper procedures are followed while wiring analog cards using shielded cables to avoid any interference

Options and Features

Enclosure Type NEMA 12, 4 or 4X, Wall mount or freestanding enclosure, Lifting lugs for heavier panels, Window kits for HMI Dead front doors, Utility receptacle, Human-machine interface, Enclosure Lights, Enclosure Thermal Management, Fused terminal blocks/breakers, Pilot devices and operators, I/O’s prewired through relay interface modules, Keyboard Kit. These panels also available for use in Class1 Div2

EXAMPLES OF PLC PANELS

Material Handling Control Panel

Material handling by definition, is the short distance movement of . . . .

PLC PUMP Control Panel

There are lots of different types of pumps which exist . . . .

Process Control Panel

This PLC panel is controlling various processes for a cement . . . .

Water & Waste Water Control Panel

The water and wastewater facilities manage, treat, recycle for municipal . . . .

FAQ's

Q1 - What is a PLC and its working principle?

The industrial control systems and the industrial control panels use the PLC or Programmable Logic Controller, which is a special kind of computer. The PLC has advanced features including timers, counters, sequential control, and control capabilities. It also provides ease towards programming. The PLC includes the CPU (Central Processor Unit) and memory and processes data. It undertakes necessary computations to produce error-free control outputs. The power supply unit or module of PLC converts the incoming AC electricity to DC, which is used in the computer circuitry.

The I/O (Input/Output) modules are responsible for communicating information between the communication network and the CPU. The PLC also has a program that includes its operating system and other useful programs that provide for easy control of operations and tasks.

Q2 - What are the types of PLC?

PLCs can be classified based on their functions, input/output (I/O) module, and their structure. Based on the I/O module, PLCs may have:

● Discrete I/O- It is the most common kind of input-output device. This interface can be used for devices that are “On/Off” in nature, like pushbuttons, selector switches, and the limit switches.

● Analogue I/O- In this kind of PLC the analog inputs can be continuous, like those where signals are received from temperature and pressure transmitter.

The classification of PLC based on their application is given below.

● Compact/Integrated PLC- These PLCs contain different built-in modules and include the I/O interfaces, CPU, power supply, and other kinds of components. The manufacturer determines the capability of the PLC.

● Modular PLC- Modular PLCs can be designed for given applications and purposes and are very flexible.

PLCs can also be large, medium, or small in size. The smallest of them are light in weight while the large ones are used for the most complex processes and are also more sophisticated.

Q3 - Why is Programmable Logic Controller used?

PLCs are used for automating the machinery control process. They can be used for both simple and complex operational requirements and scenarios. As a PLC can take a logic-based decision on its own, it automates many of the processes, lessens the burden for the operators, and also makes monitoring more convenient and efficient. Nowadays, PLCs are used for all kinds of industrial machines and scenarios. They may take the form of delicate sensors or the more rugged assembly line machinery and robots.

Q4 - Which PLC is mostly used in industry?

Different types of PLCs are used in different kind of industrial scenarios. There is “no one size fits all” kind of PLC in use or being manufactured. For instance, the large PLCs that have higher capacity in terms of programming languages, communication modules, and I/O points are used in the more complex processes and control functions. These PLCs are therefore used in the larger plants, distributed control systems, and in SCADA (Supervisory Control and Data

Acquisition System). The discrete and smaller PLCs may be used more because of their wider applications.

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