Multi-mode operation control circuit

Abstract

The utility model provides a multi-mode operation control circuit. The multi-mode operation control circuit comprises a first relay KAI, a second relay KA2, a microcontroller MCU, an execution device QF1, an execution device QF2, an execution device QF3 and a power supply. The first relay KA1 is provided with a coil, a common contact, a normally open contact and a normally closed contact, and the second relay KA2 is provided with a coil, a normally open contact and a normally closed contact; the microcontroller MCU is provided with two output nodes, and the two output nodes are respectively an output node J1-QF1 and an output node J2-QF1; the execution device QF2 is provided with a position node OF3-QF2, the execution device QF3 is provided with a position node OF2-QF3, and the execution device QF1 is provided with a closing loop accessory XF-QF1, an opening loop accessory MX-QF1 and a closing preparation contact PF-QF1. According to the utility model, besides the automatic switching function of a local controller, the remote control of a passive node, communication switching when the remote control is input and automatic switching exit control can be realized.

Description

Technical Field

[0001] This utility model belongs to the field of control technology in automatic transfer switches, and in particular relates to a multi-mode operation control circuit. Background Technology

[0002] When the control system of the automatic transfer switch is activated, it mainly relies on the local controller for automatic switching, which is achieved through RS485 interface communication. This cannot meet the needs of remote control of passive nodes. Therefore, it is necessary to design a system that can realize remote control of passive nodes, and that enables communication switching and automatic switching off control when remote control is activated. Utility Model Content

[0003] In view of this, the purpose of this utility model is to provide a multi-mode operation control circuit to alleviate the problem of remote control of passive nodes.

[0004] In a first aspect, the present invention provides a multi-mode operation control circuit, including a relay group, a power supply module, a controller module, and an execution module;

[0005] The relay group includes a first relay KA1 and a second relay KA2. The first relay KA1 is equipped with a coil, a common contact, a normally open contact, and a normally closed contact. The second relay KA2 is equipped with a coil, a normally open contact, and a normally closed contact.

[0006] The controller module is a microcontroller (MCU), which has two output nodes, namely output node J1-QF1 and output node J2-QF1.

[0007] The power module includes a 220V AC power supply and a 24V DC power supply;

[0008] The execution module includes execution device QF1, execution device QF2, and execution device QF3. Execution device QF2 and execution device QF3 are respectively equipped with position nodes OF3-QF2 and OF2-QF3. Execution device QF1 is equipped with closing circuit accessory XF-QF1, opening circuit accessory MX-QF1, and closing preparation contact PF-QF1.

[0009] The coils of the first relay KA1 and the second relay KA2 are respectively connected to the positive terminal of a 24V DC power supply; the other end of the coil of the first relay KA1 is connected to one end of the normally closed contact of the second relay KA2, and the other end of the normally closed contact of the second relay KA2 is connected to the negative terminal of the 24V DC power supply; the other end of the coil of the second relay KA2 is connected to one end of a remote exit point, and the other end of the remote exit point is connected to the negative terminal of the 24V DC power supply.

[0010] Preferably, the common contact of the first relay KA1 is connected to the live wire L of the 220V AC power supply;

[0011] The normally open contact of the first relay KA1 is connected to one end of the output node J1-QF1 and the output node J2-QF1 respectively. The other end of the output node J1-QF1 is connected to one end of the position nodes OF3-QF2 and OF2-QF3 respectively. The other end of the position nodes OF3-QF2 and OF2-QF3 is connected to one end of the closing preparation contact PF-QF1. The other end of the closing preparation contact PF-QF1 is connected to the closing circuit accessory XF-QF1. The other end of the output node J2-QF1 is connected to the opening circuit accessory MX-QF1.

[0012] The normally closed contacts of the first relay KA1 are connected to one end of the closing node and the opening node, respectively, and the other end of the closing node is connected to the position nodes OF3-QF2 and OF2-QF3, respectively.

[0013] The other end of the tripping node is connected to the tripping circuit accessory MX-QF1;

[0014] The closing circuit accessory XF-QF1 and the opening circuit accessory MX-QF1 are connected to the neutral terminal N of the 220V AC power supply.

[0015] Preferably, the normally open contacts of the second relay KA2 are connected to the microcontroller MCU, and the microcontroller MCU collects the remote control exit status.

[0016] Preferably, the position nodes OF3-QF2 and OF2-QF3 are normally closed contacts.

[0017] The present invention provides the following beneficial effects:

[0018] This invention utilizes local control within a control system to collect the status of the operating loop and automatically exit logic control upon exit. An external DC relay is added, using passive nodes to control the relay and implement the design of local and remote electrical circuits. The embedded design, effective combination and optimization of digital logic locks and electrical circuits result in high reliability and a simple circuit. In addition to digital conversion, the control system also provides remote control functionality.

[0019] Other features and advantages of this invention will be set forth in the following description, and some features will become apparent from the description or may be learned by practicing the invention. The objectives and other advantages of this invention are realized and obtained through the structures particularly pointed out in the description, claims, and drawings.

[0020] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall connection of the control circuit in an embodiment of the present utility model;

[0022] Figure 2 This is a schematic diagram showing the connection between the remote control loop and the automatic control loop in an embodiment of this utility model;

[0023] Figure 3 This is a schematic diagram of the microcontroller (MCU) connection according to an embodiment of the present invention. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Based on this, the first embodiment of the present invention provides a multi-mode operation control circuit, including a first relay KAI, a second relay KA2, a microcontroller MCU, an actuator QF1, an actuator QF2, an actuator QF3, a 220V AC power supply, and a 24V DC power supply.

[0026] The first relay KA1 is equipped with a coil, a common contact, a normally open contact, and a normally closed contact, and the second relay KA2 is equipped with a coil, a normally open contact, and a normally closed contact.

[0027] The microcontroller (MCU) is equipped with two local automatic conversion nodes for output, namely output node J1-QF1 and output node J2-QF1.

[0028] The actuator QF1 is equipped with closing circuit accessory XF-QF1, opening circuit accessory MX-QF1, and closing preparation contact PF-QF1; the actuators QF2 and QF3 are respectively equipped with position node OF3-QF2 and position node OF2-QF3.

[0029] Among them, the position nodes OF3-QF2 and OF2-QF3 are normally closed contacts; when the actuator QF1 opens, the closing preparation contact PF-QF1 closes, and when it closes, the closing preparation contact PF-QF1 opens.

[0030] like Figure 1As shown, the coils of the first relay KA1 and the second relay KA2 are respectively connected to the positive terminal of a 24V DC power supply; the other end of the coil of the first relay KA1 is connected to one end of the normally closed contact of the second relay KA2, and the other end of the normally closed contact of the second relay KA2 is connected to the negative terminal of the 24V DC power supply; the other end of the coil of the second relay KA2 is connected to one end of a remote exit node, and the other end of the remote exit node is connected to the negative terminal of the 24V DC power supply.

[0031] like Figure 2 As shown, the common contact of the first relay KA1 is connected to the live wire L of the 220V AC power supply. The normally open contact of the first relay KA1 is connected to one end of the output node J1-QF1 and the output node J2-QF1 respectively. The other end of the output node J1-QF1 is connected to one end of the position nodes OF3-QF2 and OF2-QF3 respectively. The other end of the position nodes OF3-QF2 and OF2-QF3 is connected to one end of the closing preparation contact PF-QF1. The other end of the closing preparation contact PF-QF1 is connected to the closing circuit accessory XF-QF1. The other end of the output node J2-QF1 is connected to the opening circuit accessory MX-QF1.

[0032] Furthermore, the normally closed contact of the first relay KA1 is connected to one end of the closing node and the opening node, respectively; the other end of the closing node is connected to position nodes OF3-QF2 and OF2-QF3, respectively; and the other end of the opening node is connected to the opening circuit accessory MX-QF1.

[0033] Furthermore, the closing circuit accessory XF-QF1 and the opening circuit accessory MX-QF1 are connected to the neutral terminal N of the 220V AC power supply.

[0034] like Figure 3 As shown, the normally open contacts of the second relay KA2 are connected to the microcontroller MCU. The microcontroller MCU collects the remote control exit status and identifies local conversion and remote control.

[0035] Example 2 provides a detailed analysis of the operation of the control circuit described in Example 1.

[0036] The control process of the local control circuit is as follows: the remote exit contact opens, the coil of relay KA2 is de-energized, the normally open contact of relay KA2 opens, the microcontroller MCU collects the no remote control exit status, the automatic conversion logic unlocks, and waits for automatic triggering; at this time, the normally closed contact of relay KA2 closes, the coil of relay KA1 is energized, the normally closed contact of relay KA1 opens, and the normally open contact closes, that is, the local automatic conversion circuit is connected and the remote control circuit is disconnected; when the local automatic conversion circuit is connected, output node J1-QF1 closes, the closing circuit accessory XF-QF1 is energized, the actuator QF1 closes, and the closing preparation contact PF-QF1 opens; output node J2-QF1 closes, the opening circuit accessory MX-QF1 is energized, the actuator QF1 opens, and the closing preparation contact PF-QF1 closes.

[0037] The control process of the remote control circuit is as follows: When the remote exit node closes, the coil of relay KA2 is energized, the normally open contact of relay KA2 closes, the microcontroller MCU acquires the remote control exit status, i.e., the local automatic conversion logic is locked. At this time, output nodes J1-QF1 and J2-QF1 are disconnected; the normally closed contact of relay KA2 opens, the coil of relay KA1 is de-energized, the normally closed contact of relay KA1 closes, and the normally open contact opens, i.e., the remote control circuit is connected and the local automatic conversion circuit is disconnected; when the remote control circuit is connected, the remote closing node closes, the closing circuit accessory XF-QF1 is energized, the actuator QF1 closes, and the closing preparation contact PF-QF1 opens; when the remote opening node closes, the opening circuit accessory MX-QF1 is energized, the actuator QF1 opens, and the closing preparation contact PF-QF1 closes.

[0038] In Example 3, when the 24V DC power supply of the controller is de-energized, the microcontroller (MCU) stops working, automatically locks, the coil of relay KA1 is de-energized, the normally closed contact of relay KA1 closes, and the normally open contact opens. The live wire L of the 220V AC power supply connects to the remote control circuit, the local automatic switching circuit is disconnected, and remote control is initiated. When the remote closing node closes, the closing circuit accessory XF-QF1 is energized, the actuator QF1 closes, and the closing preparation contact PF-QF1 opens. When the remote opening node closes, the opening circuit accessory MX-QF1 is energized, the actuator QF1 opens, and the closing preparation contact PF-QF1 closes.

[0039] It should be noted that, in this document, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0040] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A multi-mode operation control circuit, characterized in that, Includes relay groups, power supply modules, controller modules, and execution modules; The relay group includes a first relay KA1 and a second relay KA2. The first relay KA1 is equipped with a coil, a common contact, a normally open contact, and a normally closed contact. The second relay KA2 is equipped with a coil, a normally open contact, and a normally closed contact. The controller module is a microcontroller (MCU), which has two output nodes, namely output node J1-QF1 and output node J2-QF1. The power module includes a 220V AC power supply and a 24V DC power supply; The execution module includes execution device QF1, execution device QF2, and execution device QF3. Execution device QF2 and execution device QF3 are respectively equipped with position nodes OF3-QF2 and OF2-QF3. Execution device QF1 is equipped with closing circuit accessory XF-QF1, opening circuit accessory MX-QF1, and closing preparation contact PF-QF1. The coils of the first relay KA1 and the second relay KA2 are respectively connected to the positive terminal of a 24V DC power supply; the other end of the coil of the first relay KA1 is connected to one end of the normally closed contact of the second relay KA2, and the other end of the normally closed contact of the second relay KA2 is connected to the negative terminal of the 24V DC power supply; the other end of the coil of the second relay KA2 is connected to one end of a remote exit node, and the other end of the remote exit node is connected to the negative terminal of the 24V DC power supply.

2. The multi-mode operation control circuit according to claim 1, characterized in that, The common contact of the first relay KA1 is connected to the live wire L of a 220V AC power supply; The normally open contact of the first relay KA1 is connected to one end of the output node J1-QF1 and the output node J2-QF1 respectively. The other end of the output node J1-QF1 is connected to one end of the position nodes OF3-QF2 and OF2-QF3 respectively. The other end of the position nodes OF3-QF2 and OF2-QF3 is connected to one end of the closing preparation contact PF-QF1. The other end of the closing preparation contact PF-QF1 is connected to the closing circuit accessory XF-QF1. The other end of the output node J2-QF1 is connected to the opening circuit accessory MX-QF1. The normally closed contacts of the first relay KA1 are connected to one end of the closing node and the opening node, respectively, and the other end of the closing node is connected to the position nodes OF3-QF2 and OF2-QF3, respectively. The other end of the tripping node is connected to the tripping circuit accessory MX-QF1; The closing circuit accessory XF-QF1 and the opening circuit accessory MX-QF1 are connected to the neutral terminal N of the 220V AC power supply.

3. The multi-mode operation control circuit according to claim 1, characterized in that, The normally open contacts of the second relay KA2 are connected to the microcontroller MCU, which collects the remote control exit status.

4. The multi-mode operation control circuit according to claim 1, characterized in that, The position nodes OF3-QF2 and OF2-QF3 are normally closed contacts.

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