Electro Pneumatics Training for Industrial Workers: A Great ...

Electro Pneumatics Training for Industrial Workers: A Great Investment!

A well-trained workforce is the backbone of any successful business. This is especially true for workers in the manufacturing sectors where even the shortest downtime can be very costly.

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Technology is always changing, and workers need to be retrained periodically to sharpen their skills. Previously, pneumatics and electronics were two completely separate disciplines. However, as manufacturing shifted to automated systems, the integration of the two became inevitable.

What Is Electro Pneumatics?

Pneumatic systems, like hydraulic systems, utilize fluid power. The difference is that pneumatic systems use inert gases instead of liquids. To maximize the efficiency of a pneumatic system, there needs to be a way to start, monitor, and stop the process.

Electro-pneumatic systems use electrical technologies to control the compressed air used as the working medium. Electrical devices such as solenoids, limit switches, valves, and relays are some of the mechanisms used.

In a typical electro-pneumatic setup, electrical power is applied to a directional control valve. The valve then regulates the air pressure to various devices, such as cylinders. Variation in pressure causes the cylinders to extend or retract, transforming this movement into useful work.

In very complex systems, Programmable Logic Controllers (PLCs) are used instead of valves and relays. Auxiliary devices such as position sensors, pressure sensors, proximity switches, and flow switches make it easier to monitor the process.

How is this Discipline Used in the Industry?

Electro-pneumatic systems have diverse applications, broadly categorized into two types.

Large-Scale Applications

Aerospace exploration and aeronautical engineering are significant applications of electro-pneumatic systems. In both fields, it is necessary to pressurize the fuselage of the aircraft, whether it's a rocket or a passenger plane.

The cabins are pressurized and depressurized to sea level with the help of electro-pneumatics. Sensors detect any leakages and changes in altitude to make necessary adjustments.

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Small-Scale Applications

• Nail Gun: Nail guns are essential tools in construction. Air from a compressor is stored in a chamber within the nail gun. When the trigger is pulled, the plunger is depressed, forcing the piston up and ejecting the nails.
• Jackhammer: This tool is connected to an external compressor that delivers compressed air, causing the drill to move up and down like an automatic hammer.
• Air Brakes: Apart from trucks and buses, air brakes are also used in other moving machines. Compressed air pressing on a piston slows down the movement of a component due to friction.
• Industrial Conveyors: Manufacturing products sometimes move from one section to another through conveyors. An electro-pneumatic system diverts containers or packages that aren't properly filled, ensuring proper packing.

What are the Benefits of Formal Training?

• Enhanced Safety: Once workers become familiar with their tasks, they might stop paying close attention to details. Over time, the caution they once had can be replaced by laxity, making them a danger to themselves and those around them. Periodic training helps remind workers of the lurking dangers within the workplace.

• Higher Productivity: Well-trained workers can operate various machines without continually needing assistance. The quality of output improves as well. Trained workers use machines correctly, extending their lifespan and reducing downtime. In case of breakdowns, they can quickly repair damaged parts and resume operations.

• Reduced Staff Turnover: Investing in training shows workers that you value them and their growth. This fosters loyalty to the company and keeps your workforce motivated. Happy workers are less likely to leave. Training also eliminates the need to hire specialists on a short-term or permanent basis.

• Expand Workers' Knowledge: Technology can change almost overnight. Without retraining, employees might be ill-equipped to handle the latest advancements. For instance, Fieldbus network valve manifolds allow monitoring of electro-pneumatic systems over Ethernet networks. Without retraining, workers might not leverage this and other new developments.

Invest in Your Workers Today!

As the demand for automated systems rises, knowledge in electro-mechanical areas like electro-pneumatics will be crucial. Hiring an already trained electro-pneumatic technician is expensive. However, training your current workers and giving them the chance to prove themselves in both the classroom and on the job could be a smarter move.

Are Your Workers Ready for Formal Training?

Make the smart decision today and schedule a 3-day hands-on training program in Pneumatics and Electro-pneumatic systems. All training programs offered by NTT Inc. are conducted by experienced instructors. Each training program is ACCET-accredited and tailored to meet your specific goals. Don’t hesitate; connect with NTT today!

Where Are Electro-Pneumatic Flow Controllers Used?

By Justin Fluegel, Contributor

Flow in a fluid power system is synonymous with the velocity of an actuator. Electro-pneumatic flow control valves are used in applications where it's important to control the RPM of a pneumatic motor or the speed of a linear actuator in machinery, such as a plastic roll machine.

Both require feedback information to the controller to regulate the mass flow. For linear speed control, such as that of a pneumatic cylinder, a linear variable displacement transducer (LVDT) provides the controller with the cylinder's velocity and adjusts the mass flow to directly alter the cylinder's speed. In a rotational control scenario, like with a pneumatic motor, a rotary encoder provides the controller with the shaft's angular speed. This feedback allows the electro-pneumatic flow controller to adjust the speed to meet system requirements.

Outside of a pneumatic system on a machine, electro-pneumatic flow controllers can control other functions in processes and machinery. These valves are found in lasers, paint lines, and liquid spray coating applications. Injection molding, whether with metal or plastics, benefits from electro-pneumatic flow control valves to measure the quantity of material injected into molds or to control quench temperatures by regulating the coolant volume in the system.

Medical device manufacturers use proportional flow control valves to regulate the amount of oxygen a patient receives when on a ventilator. Another medical device utilizing pneumatic flow control valves is anesthesia machines, which mix medical gases into the air to anesthetize patients before surgery.

Opportunities for these valves continue to grow. As the demand for precision volumes and speeds in gas movement improves, and as the speed at which controllers can process information increases, these valves will become more commonplace in systems.

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