Advantages of PLCs

There are six major advantages of using PLCs over relay systems as follows:

• Flexibility
• Ease of troubleshooting
• Space efficiency
• Low cost
• Testing
• Visual operation

Flexibility: One single PLC Training courses can easily run many machines.

Ease of Troubleshooting: Back before PLCs, wired relay-type panels 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 both fast and cost effective.

Space Efficient: Fewer components are required in a PLC system than in a conventional hardware system. The PLC performs the functions of timers, counters, sequencers, and control relays, so these hardware devices are not required. The only field devices that are required are those that directly interface with the system such as switches and motor starters.

Low Cost: Prices of PLCs vary from few hundreds to few thousands. This is minimal compared to the prices of the contact, coils, and timers that companies pay to match the same things. Using PLCs also saves on installation cost and shipping.

Testing: A PLC program can be tested, evaluated, and validated in a lab prior to implementation in the field.

Visual observation: When running a PLC Training in chennai program a visual operation displays on a screen or module mounted status lamps assist in making troubleshooting a circuit quick, easy, and relatively simple.

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