1,3 and 5 For three-phase power supply, (main circuit part)
2,4, and 6 Connect to the three-phase motor
A1, A2 are the coils of the contactor, connected to the control circuit, and the motor controlling the circuit part (small control) is realized by controlling the coils of the contactor (A1, A2).
13,14 Represents the auxiliary contact of the contactor, NO is normally open, meaning 13,14 is disconnected, and 13,14 is closed after power on.Put on the control circuit part with the lock (parallel on the start button), to achieve the purpose of continuous operation.
First, the main three power contacts L1, L2, L3 of the contactor, and then three wires from T1, T2, T3 of the contactor, above is the main circuit.Control circuit: from L1 to a wire stop button (stop button is often closed, start button is often open, this should know!) From the stop button to one end of the start button and the contactor auxiliary contact, and then from the other end of the other end of the start button (this part is self-locked), the coil A1 and the coil A2 outgoing L2 or L3.
First of all, we first understand several basic knowledge of Schneider AC contactor has two basic things, the main contact and auxiliary head, the main contact is used to contact with electrical appliances or connected to the main circuit, auxiliary contact is connected to the control circuit, used to control the main circuit.
The main contact is generally connected to the main circuit, as for the order when there is no special requirements, the auxiliary contact is connected to the control circuit, generally to choose whether often open contact point or often closed contact point. This choice is based on the requirements of the control loop. Generally, if an AC contactor is often open and closed contacts are not enough, take Schneider as an example, an organization can be added at the top. Similar to normally open and closed contacts are available for use.The judgment of the AC contactor is often open and close the universal table can be used in the range, when the universal table measurement is sound to prove the often closed contact, when the universal table is not sound to prove often open contact, press the auxiliary button will ring, often closed will not ring.
Post time: May-17-2022
