S8VS-18024B

AC/DC converters are a category of electrical power supply device used to convert alternating current (AC) power into direct current (DC) power. The S8VS-18024B is one such device designed for applications in the industrial automation industry. This article will explain the application field and working principle of the device.

Application Field

The S8VS-18024B is an AC/DC converter designed for industrial automation applications. It is a din-rail mountable device and has a width of only 2.83 inches (72 mm), making it ideal for use in control panels with limited space. It comes in a standard power range of 10.8 to 22.4 VDC/24 to 35.0 VDC, with outputs from 2A to 21A. It also features high efficiency of up to 92% and a wide temperature range of -30 to +70 °C. It has a robust design, making it suitable for industrial use.

The device’s design makes it suitable for use in motor controls, pumps, compressors, conveyors, fans, lighting systems, on/off control units, and other applications. It provides reliable operation even in harsh industrial environments and is approved by regulatory agencies such as UL, cUL, CE.

Working Principle

The S8VS-18024B is a switch-mode converter that converts AC power to DC power at a much higher efficiency than traditional linear power supplies. This converts AC to DC by controlling the power in two stages: an input stage and an output stage.

In the input stage, an AC-DC full-wave bridge rectifier converts the alternating current (AC) into an ac-dc signal. The rectified DC is then passed through a filter, usually an electrolytic capacitor, to reduce the ripple. The output of the rectifier-filter combination is then passed through a PWM controller to produce a pulse width modulated (PWM) signal. This PWM signal then drives the switch, which is usually an MOSFET. The MOSFET switches on and off at a fixed rate based on the PWM signal, resulting in the controlled output from the converter.

In the output stage, the output is filtered to remove any residual ripple. There can also be additional circuitry, such as voltage protection, over-current protection, over-temperature protection, etc., which protect the device from damage due to overload or incorrect operation.

Conclusion

The S8VS-18024B is an AC/DC converter designed for industrial automation applications. Its small size and high efficiency make it suitable for uses such as motor controls, pumps, compressors, conveyors, fans, lighting systems, and on/off control units. The device’s working principle consists of an input stage, a PWM controller, and an output stage with additional components for protection. This article explained the application field and working principle of the device.