Electrical Control Components for Beginners

Electrical Control Components for Beginners
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Interested in learning more about electronics? Understanding the different components is a good place to start. Electrical panel components consist of those that control logical control devices. They control a sequence of events that impacts how a control panel operates. Some must be activated manually, such as a light switch, for example and others are electrically activated components.

The components that make up a basic electrical panel are single parts, such as timers and relays which carry out a single function. In more advanced panels, the component packages (PLC) can perform multiple logic functions.

Control Relays

This is the simplest of electrically actuated components. Also known as a ‘Normally Open 1 Pole Single Throw’, the best example is that of a light switch. You activate the switch manually and a control relay actuates the switch electrically. The most basic control relay consists of an electrical coil, a non-moving electrical contact, a spring and a movable contact.

When the switch is in the ‘off’ position, the coil stays de-energised and the spring keeps the movable contact off the non-movable contact.

When the switch is ‘on’, the magnetic field of the coil attracts the movable contact to the stationary one and closes the circuit.

Control relays are available with variable options depending on your need. These include a coil energised indicator, a contact state indicator and a manual lever or button to move the contacts into an actuated state either briefly or to stay in contact. For all your Electrical Control Components, visit https://www.osmelectrical.com/

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Timing Relays

Another basic electrically actuated component is the timing relay. They consist of a control relay with an integrated timer to control when the contacts change their state. Fitting a timing relay means devices can be switched on and off at certain times without manual interaction.

Programmable Logic Controller (PLC)

A PLC is a combination of different control panel components such as timers and relays in a single package that is programmable. They come in many different forms and there are several advantages and disadvantages to using a PLC.

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The advantages include improved user appeal with customers often preferring equipment packages. PLC’s are often a cheaper alternative than purchasing multiple single components. They are generally smaller and easier to reprogram than the rewiring of multiple components.

Possible disadvantages include the fact that a PLC requires software programming tools and training to understand how to program the PLC to work as you desire it to.


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