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Selasa, 27 Mei 2014

Chapter 7 THE PRICIPLE AND SYMBOL OF RELAY



The Relay consists of coil and contact. Coil wire windings is who gets an electric current, medium contact is a type of switch that movement depending on the weather or not there is an electric current in the coil. There are 2 types of Contact: Normally Open (the initial conditions before enabled open) and Normally Closed (the initial conditions before being activated close). Simply put the following working principles of the relay: when Coil get electrical energy (energized), the electromagnetic force will arise which will attract the armature that is berpegas, and the contact will close. 



In addition to functioning as an electronic component, the relay also functions as a system controller. So that the relay has two kinds of symbols used on:

  • circuit (hardware),

  • Program (software).

The following symbols are used:





In the data sheet, coil and contact information for separate. This causes each have a different specification difference as well. Note the following table.







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