81044/9-4-9

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81044/9-4-9 Application Field and Working Principle mainly involve units equipped with soft starter application.

Soft starters are electronic starters programmed to control the acceleration and deceleration of electric motors. Because this motor control technology is relatively new, before you can make an intelligently informed decision as to the best way to control an electric motor, you must have a basic working knowledge of these starters.

A soft starter is used to reduce the start current at startup and ramp up the motor speed in a smooth curve until finally the motor is running at full speed. Smooth acceleration and deceleration minimizes mechanical stress, noise, current surge and voltage stresses on both the motor and power source.

All of these features can be solid-programmed depending upon the application profile. This makes the soft starter extremely versatile and reliable compared to traditional motor control technology, for example – the mechanical contactor. By significantly reducing high starting current, start-up time is decreased, resulting in higher efficiency and energy savings.

Soft starters are typically used in mining, metals, construction and other that require motor acceleration and deceleration . These applications often require slow acceleration or deceleration of dynamic loads such as pumps and conveyors. Moreover, they are suitable for applications with no load or light loads.

Soft starter models come with standard overload current protection and thermal overload relays. The starter\'s phase failure protection monitors the current into each phase, and turns the output off in case of phase failure. In addition to managing the start and stop of motors, soft starters can be used to regulate the speed and torque.

Soft starters are composed of short-circuit protection components, waterproof components, control board, speed regulating board, and frequency regulating components and so on. They use DC power suppiled by power source for control, which is a more stable power source compared with AC or others.

This type of starter also integrated both protection and control functions, instead of only a contactor for protection in traditional motor control technology. The selection of soft starter model is based on a combination of motor power, current, speed, and motor type. Selecting the wrong unit generally reduces the efficiency or causes system malfunctions.

In addition, this motor control technology can be also used to reduce inventory costs, confusion with sizing correct compatibility, and assembly and installation expenses. With few internal components required for installation, the reduced risk of in-field service, along with reduced maintenance and service costs.

In conclusion, 81044/9-4-9 Application Field and Working Principles imply that soft starters are mainly used in applications with dynamic loads which require slow acceleration or deceleration. The advanced technology of this motor control device offers energy savings through reduced current start-up times, and improved overall efficiency and performance. The components are simple to install too.

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