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Why PLC is better than relay logic?

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Why PLC is better than relay logic?

If we compare the relay with PLC, PLC systems perform better in terms of work, accuracy. PLC requires less time, less wiring. PLC has more advanced functions as compared to manual work (hardware relay-base). These are the main reasons, why the industries are shifting to use PLCs over the relay.

What are the advantages of PLC then relays?

What are the advantages of PLC over relay logic?

  • Ability to interface / communicate with computers.
  • Simple programming.
  • High reliability.
  • Easy maintenance.
  • Rugged construction – can operate in extremely harsh conditions.
  • Small size.
  • Easy expandability.
  • Economical in long term.

How does the PLC differ from relay logic?

The difference between a PLC and relay logic is that a PLC is a programmable device whereas relay logic is a network of hardwired electrical devices. Both a PLC and relay logic can perform logical computation, but a PLC does it using a microprocessor and relay logic does it using electric circuits.

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What are the advantages of PLC over other control system?

Flexible in Nature: One model of PLC can be used for different operations as per requirement. Easy to install and troubleshooting: In hard wired relay based systems, installation time is more as compared to the PLC based control panels.

What is the similarity and what is the difference between relay and PLC?

Relays are electro-mechanical switches that have coil and two types of contacts that is NO & NC. But a Programmable Logic Controller, PLC is a mini computer which can take decision based on the programme and its input & output. Thus a PLC can perform many functions with the same hard wiring.

What is the similarity and difference between relays and PLC?

Relays are electro-mechanical switches that have coil and two types of contacts that is NO & NC. But a Programmable Logic Controller, PLC is a mini computer which can take decision based on the programme and its input & output.

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What are the advantages of PLC Systems?

Applications and Advantages of PLC (Programmable Logic Controllers):

  • Very fast.
  • Easy to change logic i.e. flexibility.
  • Reliable due to absence of moving parts.
  • Low power consumption.
  • Easy maintenance due to modular assembly.
  • Facilities in fault finding and diagnostic.
  • Capable of handling of very complicated logic operations.