A Programmable Logic Controller (PLC) receives information from one or more inputs. This semiconductor control device processes the information based on a software program. Finally, it sends an output control signal. The microprocessor based control system performs functions such as timing, logic, sequencing and others. The PLC follows instructions from an operator-defined program.

These intelligent systems provide reliable, high-speed monitoring and control of processes in automated applications. In addition, they are easy to program and configure.

Once the program updates the output, the CPU starts over and the cycle repeats again. The cycle depends on the number of inputs, outputs, and size of the program, while the action will depend on the inputs coming from a variety of sensors.

The input sensors include components such as switches, proximity sensors, photoelectric sensors, pressure switches, level switches, encoders and temperature sensors, while the output devices include actuators, relays, switches, and many more.

PLCs rely on software programs that help them in making the necessary decisions. The PLCs are programmed through a variety of tools, which may differ in ease of use, appearance, and complexity. The most commonly used PLC programming language is Ladder Logic, a graphical software that uses common electrical symbols. Other languages include Function Block Diagram (FBD), Sequential Function Chart (SFC) and Structured Text (ST).

The programming is done on the device such as a computer or handheld device after which it is transferred to the PLC memory using a communication interface.

Selecting a suitable PLC that will address your current and future needs can be a challenge, especially with the large number of different PLCs on the market today. The available PLCs have varying capabilities, physical sizes, complexity, cost, power requirements, scalability and other parameters. Therefore, it is necessary to determine the correct programmable logic controller for your specific application. Special systems can be designed for use in harsh environments.

The Programmable Logic Controller has revolutionized and simplified controls in automation and industrial applications. PLCs are easy to install, wire, program and modify to suit changing application requirements. These control systems are usually available in a wide range of sizes that ensure finding exactly what you need for any application.

If you’re already familiar with rebates from electric utilities and government organizations in your area, you may notice that the dollar amounts for most rebates have decreased over the past year. The average rebate for an LED replacement lamp has gone down by 7% since last January. Rebates amounts also decreased for LED fixtures: recessed down lights decreased by 66%, accent lighting by 12%, and high bay fixtures by 8%.

You needn’t be alarmed by these numbers, though. They’ve only been adjusted to match the lower prices of LEDs in 2013. Less money is necessary to make purchasing an LED financially attractive. Also, since there are over twice the programs this year, money is even more accessible.

If you’re still pondering a switch to LEDs, or have never considered utilizing LED rebates before, starting to look for them is easier than ever. Currently, you can find rebates and incentives for energy efficient commercial lighting in 71% of the U.S. As the year progresses, we should see that number go up.

More people have been thinking of trying to switch from oil-dependent vehicles to electric cars. However, many of the same individuals are also intimidated by the numbers of gas vs. charging stations available near them. While this might not be a problem in larger cities, more rural locations can run into charging issues. This is why charging your vehicle at home is so important. Around 88% of electric vehicle drivers refuel at home or at work.

Depending on your car, you might need different levels of charge. A level 1 charger uses wall sockets in the average home. However, 1 charge could take about 22 hours to complete. A level 2 charger is a little better. It works with a 240-volt wall outlet and can give you around 70 miles per charging hour. You can use the same outlet as your washer and dryer, but having a dedicated outlet for your car can help you prevent potential problems from alternating electricity flows.

A level 3 charger is the fastest and most efficient option for charging an electric car. Level 3 chargers, also called DC fast chargers, use a special charging port to get power to the battery while bypassing the car’s onboard charger. With this kind of station, you can fully charge your vehicle in a half hour.

Did you know there could be unknown home safety issues lurking in your presumed safe haven? Your home’s age, installation issues, wear and tear, and overlooking safety devices could put you at risk.

Does your home have any of the following home safety issues?

Code and Wiring Updates Wiring codes in the U.S. are updated every three years to ensure electrical safety across the country. As a result, families living in older homes are at an increased risk of electrical safety issues due to:

Ensure home safety with an electrical home inspection  Don’t let home safety issues result in property damage or present a danger to your family. Find and address home safety hazards quickly and efficiently with an electrical home inspection. Mr. Electric® can provide a detailed, prioritized written checklist of all areas of your home requiring immediate attention, areas for improvement, and potential upgrade possibilities to ensure the safety of your home. Ensure peace of mind by proactively addressing home safety issues. Contact Mr. Electric today. Our professional electricians are dedicated to the safety of your home and family.