2901480

Time Delay Relays

2901480 Application Field and Working Principle

Time delay relays come from electromechanical relays, which produce a “time delayed” state when triggered by an input signal. They are difficult to control as the delay time is the key factor. Generally, delay time is adjustable between 0.1s~999h. Time delay relays are used in diverse applications that require protection from electrical power overuse, taking too long for a control function to start, or a signal remaining active for longer than considered normal.

A typical time delay relay is composed of several parts, including a main relay, a time control device, a driving device, a display device, and a protection device. The main relay, also vibrated as the completion circuit, is responsible for starting and stopping the electric system. Time control device is usually a core component, which consists of the realization of delay time, such as microcomputer-controlled timers, mechanical timers, and electronic timers. The driving device interacts with the secondary circuit of the time delay device, so it can control the internal main relay when they receive the control signal. On the other hand, display device can show the current time or selected delay time. In addition, it can provide a self-test and indicate whether the system is normal or abnormal. The protection device is used to prevent the device from being damaged by an electric leakage, phase loss or other factors.

Timing Selection

Time delay relays can be selected according to the delay time requirement of the application system. Generally, the delay time can be set within the adjustable range of 0.1s~999h. It should be noted that when the time range is selected, the customer needs to select the time delay relay with the appropriate time range and work frequency.

Application Fields of 2901480 Series Time Delay Relays

2901480 series time delay relays are widely used in various applications such as machinery, ventilation, energy conservation, lighting, and so on. It can be used to control the start and stop of the motor, delay the start of the machine, prevent overloading of electrical lines, adjust the delay of the mechanical arm, control the production speed, and so on. It can also be used to prevent the motor from being switched on and off frequently in a short period of time and reduce the damage risk.

Working Principle of 2901480 Series Time Delay Relays

The working principle of 2901480 series time delay relays is that when an external signal is applied to the input terminal of the relays, it will cause the closing of the main contactor and cut off the main circuit. When the button of the relay is turned off, the time delay circuit will start automatically, and after reaching the preset time, the contactor will be opened. The operation time of this series relays can be adjustable within the range of 0.1s~999h.

Conclusion

Time delay relays are widely used in many application fields. 2901480 series time delay relays are popular with customers due to its high reliability and excellent performance. With its adjustable range of 0.1s~999h, the 2901480 series can be used for different applications. Its principle of working consists of the main circuit being cut off and the contactor being opened after a preset time.