In electrical control, timer relays can be used in situations where the time principle is needed to control, such as starting and braking of motors, and the time interval of simple logic movements. After the timing is completed, the KT normally open contact turns on the KM2 coil, the KM2 normally open contact closes, and the M2 motor starts.Press the button SB2, the normally open contact of the contactor KM1 is closed, the M1 motor runs, and the timer relay (KT) starts timing.Power-off delay type (after a period of power off, the contact of the timer relay will act) Power-on delay type (after power-on for a period of time, the contact of the timer relay will act) The time relay has a variety of working modes, which can not only realize long delay time but also have high delay accuracy, small size, convenient adjustment and long service life, making the control system simpler and more reliable. It adopts an electronic intelligent digital time relay of large-scale integrated circuit technology. With the development of electronic technology, electronic timer relays have become mainstream products in time relays. A time relay may not be able to start delay closing, but it can be done by configuring a certain number of time relays and intermediate relays. When replacing a standard automotive relay, you can add ON or OFF delay or both. E-T-A timer relays combine a well-proven mechanical contact system with the flexibility of an electronic counter. Autopurge timer relay iso#Generally speaking, the delay performance of the time relay can be adjusted within the design range, so as to facilitate the adjustment of its delay time. E-T-A timer relays are available for DC 12 V and DC 24 V applications and are suitable for standard automotive relay sockets to ISO 7588. Main functionsĪs an executive device in simple program control, it starts timing after receiving the start signal, and its working contacts open or close after the timing is over, thereby promoting the subsequent circuit work. Its characteristic is that there is a delay from the time when the attracting coil gets the signal to the action of the contact, which is generally used for the motor starting process control with time as a function. It is an automatic control electrical appliance that uses the principle of electromagnetic or mechanical action to delay the closing or breaking of contacts. In many control systems, timer relays are required to implement timer delay control. It is an electrical component used on a circuit with a lower voltage or a smaller current to switch on or off a circuit with a higher voltage and a larger current.ĪTO timer relay is a very important component in the electrical control system. A timer relay refers to a relay whose output circuit needs a specified time to produce a jumping change (or contact action) after adding or removing the input action signal.
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