blazing pack Belongs to the category of low-voltage electrical appliances, such as according to the classification should be classified into low-voltage electrical electromechanical control electrical appliances, is a commonly used automatic control system of machine tool electrical appliances. Its development history can be traced back to the 1970s, by the traditional electric time relay or by the RC charging circuit and single-junction transistor completed delay trigger time control circuit, So far, it has developed to widely use universal CMOS integrated circuits and multi-delay functions composed of dedicated delay integrated chips (power delay, on-delay, power delay, off delay, reciprocating delay, interval timing, etc.), multi-setting modes (potentiometer setting, digital dip switches, keys, etc.), multi-temporal selection (0.01s, 1s, 1m, 1h, etc.), Multi-mode, LED display time relay. Because it has many advantages such as high delay accuracy, wide delay range, and intuitive delay display in the delay process, it is incomparable to traditional time relays, so it has basically replaced traditional time relays in the field of automatic control today.

Although the domestic time controller started late, but in the field of time relay has also made great progress in recent years, with the continuous development of China's electronic technology and a large number of domestic special time relay chip research and development and application, to a large extent, so that the domestic time relay regardless of appearance and product performance have great development. In particular, on the basis of the special chip, the chip mask technology is used, the core part of the relay is masked on the printed circuit board, so that the time relay is changed from LED digital display to LCD liquid crystal display, coupled with the widespread use of SMD patch electronic components, so that the appearance of the product is more miniaturized and the product performance is more stable. When the user is in use, the time or control mode can be preset through the dial or function button of the panel peripheral, and some products can be equivalent and interchangeable with foreign products.

In summary, a time relay is a controller whose delay function is realized by an electronic circuit. It can be widely used in automatic control circuit for time control and indication.

As an automatic control device, time relay is widely used, especially when it is used in the environment involving more electrical equipment in the low-voltage electrical control network, the electromagnetic interference problem tends to be more serious. At this time, the damage of the internal components of the time relay is not the main cause of the failure (failure) of the time relay, but the interference in the application field directly enters the time relay through electromagnetic coupling and capacitive coupling, interfering with its normal delay control. Whether the time relay can work normally in this interference environment often affects the normal logic function of the entire automatic control system, and may even cause large quality accidents and economic losses. Therefore, the time relay should have high reliability and anti-interference ability in a variety of harsh environments, that is to say, the time relay must have good electromagnetic compatibility performance, only in this way can improve its product quality and improve its market competitiveness.

The development of time relay, the delay completed by the early separation device, now has a dedicated CMOS time relay chip to replace, no matter from the time accuracy, the delay method has been greatly developed, especially in recent years, the programmable controller (PLC) with its strong versatility, good flexibility, complete hardware, programming method is simple and easy to learn and high reliability. Widely used in the field of automatic time control, and the use of this PLC on the existing time relay market has occupied the corresponding market share, and this trend has gradually expanded the trend, may in the near future, PLC will play a more important role in the field of automatic control.

Devil's 13 has a full range of business systems from design and development to manufacturing, sales and service, we will work harder to provide customers with reliable, stable products and a full range of services. Business involves industrial control components, instrumentation, motor protection, frequency converter, soft starters and other fields, these products are widely used in industrial control, mechanical equipment, power systems and public utilities. For more information, call 400-8236-775