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What is a Relay System? [ Ссылка ]
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There are many advantages that a PLC system holds over a relay system. Today, we will dive into some of those advantages. One of the first and simplest advantages is reliability. The internal relay systems of a PLC are solid state. This means that the relay function is not mechanical like conventional relay systems and components.
1. Reliability
The internal relay systems of a PLC are solid state. This means that the relay function is not mechanical like conventional relay systems and components.
2. Ease of Troubleshooting
Another advantage of a PLC system is the ease of troubleshooting. In a PLC system, a good technician can read through the programming and usually figure out what is and isn’t working.
3. Easy Expandability
One of the best features that a PLC system has over a traditional relay system is versatility with the programming and easy expandability. For example, if you wanted to add a timer to make a motor turn on after five seconds, you would just add it to the program and set it to five seconds in the PLC.
4. Smaller Size
The physical size requirements of a PLC system are far smaller than a cabinet needed for relay logic circuitry.
Most of the physical relays, timers, counters, and controllers from a relay logic system are all contained in the PLC itself.
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