Time delay relay is a device that controls the working time of electrical equipment. It can extend or delay the on or off time of the circuit to control and protect electrical equipment. Time delay relay is mainly composed of time delay part, relay part and contact.
1. Delay part: the core part of the delay relay, which can be adjusted by the delay element (such as D8031AH Capacitance, resistance, inductance, etc.).
2. Relay part: it is responsible for controlling the conduction and disconnection of electrical equipment, and converting the delay signal generated by the delay part into action signal.
The characteristics of time delay relay include:
-High reliability: reliable relay is used as the actuating element, which is stable and reliable.
-High precision: It has high delay precision and can be set accurately as required.
-Wide application: applicable to various automatic control systems.
The working principle of the time delay relay is that when the input signal is triggered, the time delay relay starts timing, and after the set time delay, the relay is triggered to control the on-off state of the circuit.
According to different principles and functions, time delay relays can be divided into the following categories:
-Mechanical time delay relay
-Electronic time delay relay
-Digital time delay relay
-Optoelectronic time delay relay
Common faults of delay relay include poor contact, short circuit of circuit, delay time deviation, etc. Preventive measures include regular inspection and maintenance to ensure that the wiring is firm and reliable, avoid overload use, and avoid high ambient temperature.
As for the wiring method of the delay relay, it needs to be determined according to the specific relay model and use scenario. Generally speaking, the wiring of time delay relay includes control input terminal, control output terminal, power input terminal and power output terminal, which shall be correctly connected according to the circuit diagram and instructions.
