How to wire Schneider AC contactor LC1E09

Generally, the three-phase contactor has a total of 8 points, three inputs, three outputs, and two control points. The output and input are corresponding, and it is easy to see. If you want to add self-locking, you also need to connect the wire from one of the terminals at the output point to the control point.

Once you know the principle, you should figure out the contacts of the external power supply, that is, the two contacts of the coil, which are generally at the lower part of the contactor, and on each side. The other inputs and outputs are generally in the upper part, and you can see it at a glance. Also pay attention to the voltage of the external power supply (220V or 380V), which is generally marked as yes.

And pay attention to whether the contact point is normally closed or normally open. If there is a self-locking control, it is enough to sort out the line according to the principle.

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What kind of wire do you want to connect, I can give you a physical picture.

The AC contactor is used to turn on or off the circuit by gaining and losing power from the coil. Generally, the coil (A1, A2) is controlled by a switch or PLC output, the normally open contact is used to maintain the power supply of the coil, and the inlet and outlet ports are connected to single-phase or three-phase circuits.

The wiring diagram is as follows.

The contactor is marked on (subject to the actual situation), 1L3L5L corresponds to 2T4T6T is connected to the main contact, the corresponding coil has a binding post A1A2, and the auxiliary contact can be corresponding.

Indicates the auxiliary contact of this contactor, and the NO meter is implied as normally open, that is, it is disconnected when there is no power, and 13 and 14 are closed after power-on. It is placed in the control circuit part and is used to lock (connected in parallel on the start button) to achieve the purpose of continuous operation.

When the contactor solenoid coil is not energized, the reaction force of the spring and the self-weight of the armature core keep the main contact in the open position. When the electromagnetic coil is connected to the control voltage (generally the rated voltage) through the control loop, the electromagnetic force overcomes the reaction force of the spring and draws the armature to the static iron core, driving the main contact to close, turning on the circuit, and the auxiliary contact acting accordingly.

Information on the expansion of the land exhibition:

The contactor is mainly used for frequently connecting or breaking AC and DC circuits, with large control capacity, can be far away from the ballast distance operation, with the relay can achieve timing operation, interlock control, various quantitative control and loss of voltage and undervoltage protection, widely used in automatic control circuits, its main control object is the motor, can also be used to control other power loads, such as electric heaters, lighting, welding machines, capacitor banks, etc.

Electromagnetic system: The electromagnetic system includes the electromagnetic coil and core, which is an important part of the contactor, relying on it to drive the closing and disconnection of the contact.

Contact system: The contact is the executive part of the contactor, including the main contact and the auxiliary contact. The function of the main contact is to turn on and break the main circuit to control the larger current, while the auxiliary contact is in the control pure slow circuit to meet the requirements of various control methods.

Arc extinguishing system: The arc extinguishing device is used to ensure that the arc generated is reliably extinguished when the contact is disconnected from the circuit, so as to reduce the damage of the arc to the contact. In order to quickly extinguish the arc when disconnected, the contactor is usually equipped with an arc extinguishing device, which is generally a semi-sealed longitudinal seam clay arc extinguishing cover, and is equipped with a strong magnetic arc blowing circuit.

The wiring method is the same as in the drawing:

Economy or standard. The last of the economic type is n, and the last of the standard type is c.

The standard L1, L2, and L3 are connected to 380V AC, and T1, T2, and T3 are connected to thermal relays or loads. A1 A2 is connected to control electricity, control the suction and breaking of the contactor, pay attention to the voltage range on the coil. There is also a normally open point ON and a normally closed point NC.

The economic type is the same as the standard type, but there is one less auxiliary exit point, and there is only one open point or one closed point.

When the contactor is electromagnetic.

When the coil is not energized, the reaction force of the spring and the weight of the armature core keep the main contact in the open position. When the electromagnetic coil is capacitated through the control loop and the control voltage (generally the rated voltage) is turned on, the electromagnetic force overcomes the reaction force of the spring to draw the armature to the static iron core, drives the main contact to close, turns on the circuit, and the auxiliary contact acts accordingly.