In the context of today's industrial automation, relays have become popular products in automation equipment components, and more and more enterprise users have turned their attention to relays. Today, we will introduce finder intermediate relays to you. The basic principle of intermediate relay is relay, which is similar to relay. In industrial control circuit and current household appliance control circuit, the function of intermediate relay is different for different control circuits.
Finder intermediate relayIt is used to increase the number and capacity of contacts in relay protection and automatic control systems, and to transmit intermediate signals in control circuits. Finder intermediate relay mainly has two time-delay methods, namely power on delay and power-off delay. The installation methods are mainly divided into fixed type, protruding type, embedded type and guide rail type. Generally, there is no main contact, because the overload capacity is relatively small. Therefore, it uses a large number of auxiliary contacts.
Intermediate relay has many functions and functions in practice. The contact of finder intermediate relay has a certain load capacity. When the load capacity is relatively small, it can be used to replace small contactors, such as the control of electric rolling gate and some small household appliances. This can not only achieve the purpose of control, but also save space and make the control part of electrical appliances more delicate.
In the circuit control system, adding a finder intermediate relay in the circuit will not only change the control form, increase the number of contacts, but also facilitate maintenance.
Although the contact capacity of finder intermediate relay is not very large, it also has a certain load capacity, and the current required for its drive is very small, so the intermediate relay can be used to expand the contact capacity. In the control circuit, the finder intermediate relay is used to control other loads to expand the control capacity.
In the industrial control circuit, an intermediate relay can be connected in parallel on the coil of the original contactor, and the normally closed contact of the intermediate relay can be used to control the corresponding components and change the contact type, so as to achieve the control purpose by using the normally closed contact of the contactor.
In the control circuit of industrial control circuit, the voltage is DC24V, while the coil voltage of solenoid valve is AC220V. Installing finder intermediate relay can separate DC and AC, high voltage and low voltage, which is convenient for future maintenance and safe use.
In industrial control or computer control circuits, although there are various interference suppression measures, the interference phenomenon still exists more or less. Adding a finder intermediate relay inside can achieve the purpose of removing interference.