Programmable logic controller (PLC) control panels or also known as PLC Automation Panel are one of the most important and efficient kinds of control panels. Which are generally used in variety of electronic and electrical circuit fittings. PLC Control Panels we manufacture are highly capable of giving higher output at less power consumption. Integrated with solid PLC logic and flawless PLC hardware programming. Ease in modification of logic, reduced size, means of remote communications and advances in the technology have made PLC Automation Control Panels an edge over conventional relay based systems. Control Systems Engineers have developed communication software’s for remote communication of the PLC Panels in various different protocols. With PLC based Panels HMI/MMI are provided to provide the operator various messages and controls of the process plants touch screen MMI are provided. To effective control of the system.
CONCEPT OF PLC :
Initially industries used relays to control the manufacturing processes. The relay control panels had to be regularly replaced, consumed lot of power and it was difficult to figure out the problems associated with it. To sort these issues, Programmable logic controller (PLC) was introduced.
Programmable Logic Controller (PLC) is a digital computer used for the automation of various electro-mechanical processes in industries. These controllers are specially designed to survive in harsh situations and shielded from heat, cold, dust, and moisture etc. PLC consists of a microprocessor which is programmed using the computer language. The program is written on a computer and is downloaded to the PLC via cable. These loaded programs are stored in non – volatile memory of the PLC. During the transition of relay control panels to PLC, the hard wired relay logic was exchanged for the program fed by the user. A visual programming language known as the Ladder Logic was created to program the PLC.
FEATURES AND APPLICATIONS OF PLC PANEL:
FEATURES OF PLC PANEL:
- Minimizes human interface, thus minimizes the possibility of error.
- Whole system can be monitored & controlled at single junction.
- Data Logging of all process parameters with alarm.
- Through HMI man & machine interface is possible.
PLC Panel is integral part of most system automations. PLC panels finds application in industries with automation implementations such as manufacturing plants, assembly line, power stations, power generation plants and chemical plants. PLC Panels also accommodate the various equipment that support the PLC – power supply, relays, controllers etc
Applications of PLC Based panels that used in industries likes Pharmaceutical Machines, Beverage Industries, Textile industries, Paper Industries, winding & unwinding machine, Sticker labeling Machine panel, Screw capping Machine Panel, Screw capping Machine.
PLC STARTER PANEL:
PLC starter panel provide following motor protection:-
- Thermal Overload
- Process Caused (Excessive load)
- High Ambient Conditions (Hot, Blocked Ventilation)
- Power Supply Issues (Voltage/Current Unbalance, Harmonics)
- Phase Fault
- Ground Fault
- Abnormal Operating Conditions
- Over & Under Voltage
- Voltage and Current Unbalance
PLC Starter panel Advantages:-
- Ease of Installation
- Single point control
- Greater Safety
- Cost & Space Economy
PLC MIMIC PANEL
In Modern Plants & control rooms, even through monitors are widely used for viewing of the processes & status there in need of mimic panels for viewing of processes at a glance & as second level backup.
SALIENT FEATURES OF PLC MIMIC PANEL
- Modular structure durable
- Highly effective
- Outstanding in quality
- Alterations possible
- Multicolor printing with cut outs
- Vibration resistant back layer
- Printed on polyvinyl
- Cost effective
MIMIC is the representation of any process plant for which is displayed on the Panel or Control Desk.
This representation makes it easy to monitor the whole plant from one location and is also used as a second level backup.
ADVANTAGES OF PLC PANELS:
Flexibility: One single Programmable Logic Controller can easily run many machines.
Correcting Errors: In old days, with wired relay-type panels, any program alterations required time for rewiring of panels and devices. With PLC control any change in circuit design or sequence is as simple as retyping the logic. Correcting errors in PLC is extremely short and cost effective.
Space Efficient: Programmable Logic Control memory is getting bigger and bigger this means that we can generate more and more contacts, coils, timers, sequencers, counters and so on. We can have thousands of contact timers and counters in a single PLC. Imagine what it would be like to have so many things in one panel.
Low Cost: Prices of Programmable Logic Controllers vary from few hundreds to few thousands. This is nothing compared to the prices of the contact and coils and timers that you would pay to match the same things. Add to that the installation cost, the shipping cost and so on.
Visual observation: When running a PLC program a visual operation can be seen on the screen. Hence troubleshooting a circuit is really quick, easy and simple.