Relay board controlled by contactor and electrical cabinet
By standardizing the configuration of terminal blocks and circuit devices through relay boards controlled by contactors, automatic control of electrical circuits within electrical cabinets is achieved, solving the problem of complex connections within electrical cabinets, reducing production and maintenance costs, and improving equipment consistency and maintenance convenience.
Patent Information
- Application Number
- CN202421542686.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-02
- Publication Date
- 2025-11-25
- Estimated Expiration
- 2034-07-02
AI Technical Summary
In existing technologies, the electrical circuit connections inside electrical cabinets are complex, leading to high maintenance difficulty and troubleshooting challenges. Furthermore, different design schemes and assembly styles result in extended production cycles and high costs, making it difficult to guarantee functional and quality consistency.
Design a relay board for contactor control. Through standardized configuration of terminal blocks and circuit devices, the automatic engagement control of the contactor is realized, simplifying the on/off position control and fault troubleshooting of motor-controlled equipment. The fixed design circuit and manufacturing process reduce the complexity of manual wiring.
It reduces production costs and failure rates, decreases subsequent maintenance costs, occupies little space, has a wide range of applications, simplifies assembly and modification work, and improves equipment consistency and maintenance convenience.
Smart Images
Figure CN223598629U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The application relates to a contactor-controlled relay board and an electrical cabinet, and belongs to the field of automatic control. BACKGROUND
[0002] With the increasing popularity of automation or distributed control in factories, too many intermediate links and diversified non-site devices lead to different overall design requirements and ideas of the industry, combined with different design styles of designers, and after assembly differences of different assembly workers, the effects of assembly for realizing the same function are various, which leads to great difficulty in maintenance. For example, if a user needs a system of a certain link, different manufacturers will propose many different design schemes, different engineers will generate more different detailed schemes according to different design schemes, and different processing manufacturers will generate many processing styles, which cannot be unified. Moreover, when a user needs a system of multiple links, the more links, the more the same devices. At the same time, due to product replacement, personnel flow, different technical levels and many other factors, manufacturers are also difficult to produce the same devices as before, thereby causing problems such as difficulty in guaranteeing function and quality, and prolonged production cycle.
[0003] In addition, when the electrical cabinet body is replaced, most of the modification projects cannot be re-purchased due to conditions, environment, funds and other problems, and it is difficult to meet the production requirements in function, such as a heat company needing to modify multiple heat exchange stations. Since the heat exchange stations were built gradually, they cannot be purchased from the same company, and even if they are purchased from the same company, it is difficult to unify.
[0004] Furthermore, the electrical circuit in the cabinet needs to be reassembled by personnel on site during project modification, which has high maintenance cost in the later period. On the other hand, since the common cabinet electrical circuit control in the field is connected by a control button and a terminal block, the terminal block is connected with a circuit device, and the circuit device is connected with a contactor auxiliary contact, thereby forming a feedback loop for action. The connection of each wire head is very complicated, is not conducive to identification, occupies a large space, has more processes, and is difficult to quickly handle faults. CONTENT OF THE UTILITY MODEL
[0005] The application aims to provide a contactor-controlled relay board and an electrical cabinet. The connection line between the terminal block and the circuit device is configured, the automatic attraction of the contactor can be controlled to realize the automatic start control of the motor-controlled device, and the on / off in-place control and fault elimination of the motor-controlled device can be performed in time.
[0006] To achieve the above-mentioned purpose, the application provides a contactor-controlled relay board, which comprises:
[0007] The circuit board, the terminal strip module arranged on the circuit board and the relay module, one end of the terminal strip module is used for connecting with the control button, the other end is connected with the relay module, the relay module is used for connecting with the contactor and the controlled device, wherein the terminal strip module comprises a terminal strip X1, a terminal strip X2 and a terminal strip X3, the relay module comprises a relay K1 and a relay K2 for controlling the attraction of the contactor, a relay K3 for controlling and feeding back the remote state of the controlled device, a relay K4 for feeding back the open-to-position state of the controlled device, a relay K5 for feeding back the close-to-position state of the controlled device, and a relay K6 for feeding back the fault state of the controlled device;
[0008] The terminal strip X1 is used for sending a control signal to the relay module to control the attraction of the contactor and the real-time state of the controlled device, the terminal strip X2 is used for remotely controlling and collecting the real-time state of the controlled device through the PLC, and the terminal strip X3 is used for remotely controlling and collecting the real-time state of the controlled device through the button switch.
[0009] Optionally, the terminal strip module further comprises a terminal strip X4 and a terminal strip X5 passing through the terminal strip X4.
[0010] Optionally, the contactor comprises a contactor KM1 and a contactor KM2, and the terminal strip X1 comprises a terminal X101, a terminal X102, a terminal X103, a terminal X104, a terminal X105, a terminal X106, a terminal X107, a terminal X108, a terminal X109, a terminal X110, a terminal X111 and a terminal X112.
[0011] The terminal X101, the terminal X107, the terminal X109 and the terminal X111 are used for connecting with the live wire, the terminal X102, the terminal X104 and the terminal X106 are used for connecting with the zero line, the terminal X103 is connected with the coil of the relay K1 to control the coil of the contactor KM1, the terminal X105 is connected with the coil of the relay K2 to control the coil of the contactor KM2, the terminal X108 is connected with the coil of the relay K4 to control the open-to-position state of the controlled device, the terminal X110 is connected with the coil of the relay K5 to control the close-to-position state of the controlled device, and the terminal X112 is connected with the coil of the relay K6 to control the fault state of the controlled device.
[0012] Optionally, the terminal strip X2 is further used for remotely controlling the attraction of the relays K1 and K2 through the PLC, and the terminal strip X2 comprises a terminal X201, a terminal X202, a terminal X203, a terminal X204 and a terminal X205.
[0013] The terminals X201, X202, X203 and X204 are respectively connected with the coils of the relays K1, K2, so as to control the attraction of the relays K1, K2 remotely through the PLC, and the terminal X2:5 is empty.
[0014] Optionally, the terminal row X2 is also used for collecting the real-time state of the controlled device through the PLC, and the terminal row X2 further comprises a terminal X206, a terminal X207, a terminal X208, a terminal X209 and a terminal X210.
[0015] The terminal X206 is connected with the dry contact of the relay K3, so as to feed back the remote state of the controlled device through the dry contact, the terminal X207 is connected with the dry contact of the relay K4, so as to feed back the open-to-position state of the controlled device through the dry contact, the terminal X208 is connected with the dry contact of the relay K5, so as to feed back the close-to-position state of the controlled device through the dry contact, the terminal X209 is connected with the dry contact of the relay K6, so as to feed back the fault state of the controlled device through the dry contact, and the terminal X210 is a common terminal.
[0016] Optionally, the terminal row X3 comprises a terminal X301, a terminal X302, a terminal X303, a terminal X304, a terminal X305, a terminal X306, a terminal X307, a terminal X308, a terminal X309 and a terminal X310.
[0017] The terminals X301 and X303 are used for being connected with the live wire, the terminals X302 and X304 are respectively connected with the interlocking points of the relays K1 and K2, the terminal X305 is connected with the coil of the relay K3, the terminal X306 is connected with the dry contact of the relay K3, the terminal X307 is connected with the dry contact of the relay K4, the terminal X308 is connected with the dry contact of the relay K5, the terminal X309 is connected with the dry contact of the relay K6, so as to feed back the remote state, the open-to-position state, the close-to-position state and the fault state of the controlled device through the active feedback respectively, and the terminal X310 is used for being connected with the zero wire to form a closed loop.
[0018] Optionally, the terminal row X4 comprises a terminal X401, a terminal X402, a terminal X403, a terminal X404, a terminal X405 and a terminal X406, and the terminal row X5 comprises a terminal X501, a terminal X502, a terminal X503, a terminal X504, a terminal X505 and a terminal X506.
[0019] The terminals X401 and X501 are directly connected, the terminals X402 and X502 are directly connected, the terminals X403 and X503 are directly connected, the terminals X404 and X504 are directly connected, the terminals X405 and X505 are directly connected, and the terminals X406 and X506 are directly connected.
[0020] The contactor-controlled relay board and the electrical cabinet provided by the application have the advantages that, compared with the prior art, the contactor-controlled relay board and the electrical cabinet provided by the application are applied to cabinet integration and cabinet rapid transformation in the field of distributed control, and can be specifically used for controlling motor-controlled equipment, motor equipment with bidirectional movement such as motor-driven cranes, and the like, the connection lines between the terminal rows and the circuit devices are configured through solidified design circuits and production processes, the starting control can be directly realized through automatic attraction of the contactor coil, the on / off in-place control and fault elimination of the motor-controlled equipment can be timely performed, the production cost and the failure rate are lower, the occupied space is smaller, the application range is wider, the working intensity of subsequent transformation is reduced, and the later maintenance cost is greatly reduced. BRIEF DESCRIPTION OF DRAWINGS
[0021] In order to more clearly illustrate the technical solutions in the embodiments of the application, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description only some embodiments of the application, and for those skilled in the art, other drawings can be obtained without creative labor on the basis of these drawings.
[0022] Figure 1 The structural schematic diagram of the contactor-controlled relay board provided by the embodiment of the application is shown in the figure.
[0023] Figure 2 The PCB wiring schematic diagram of the contactor-controlled relay board provided by the embodiment of the application is shown in the figure.
[0024] Figure 3 The schematic diagram of the traditional wiring mode provided by the embodiment of the application is shown in the figure.
[0025] Figure 4 The wiring schematic diagram of the contactor-controlled relay board provided by the embodiment of the application is shown in the figure. DETAILED DESCRIPTION
[0026] In order to make the technical problems, technical solutions and beneficial effects of the application more clearly understood, the following will further describe the application in combination with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the application, and are not used to limit the application.
[0027] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.
[0028] It should be understood that the terms "length", "width", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate directions or positions based on the directions or positions shown in the drawings, and are used only to facilitate the description of the present application and simplify the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.
[0029] As shown in Figure 1 The relay board controlled by the contactor provided by the embodiment of the present application comprises:
[0030] The circuit board, the terminal block module arranged on the circuit board and the relay module, one end of the terminal block module is used for connecting with the control button, and the other end is connected with the relay module, and the relay module is used for connecting with the contactor and the controlled device, wherein the terminal block module comprises a terminal block X1, a terminal block X2 and a terminal block X3, and the relay module comprises a relay K1 and a relay K2 used for controlling the attraction of the contactor, a relay K3 used for controlling and feeding back the remote state of the controlled device, a relay K4 used for feeding back the open-to-position state (also referred to as the positive direction to position state) of the controlled device, a relay K5 used for feeding back the close-to-position state (also referred to as the negative direction to position state) of the controlled device, and a relay K6 used for feeding back the fault state of the controlled device.
[0031] The terminal block X1 is used for sending a control signal to the relay module to control the attraction of the contactor and the real-time state of the controlled device, the terminal block X2 is used for remotely controlling and collecting the real-time state of the controlled device through the PLC, and the terminal block X3 is used for remotely controlling and collecting the real-time state of the controlled device through the button switch.
[0032] In an embodiment, the controlled device comprises a motor type device with bidirectional movement, such as an electric butterfly valve, an electric gate, an electric hoist, a travelling crane and the like. The real-time state of the controlled device comprises a positive direction to position state, a negative direction to position state, a remote state and a fault state.
[0033] In an embodiment, the contactor comprises a forward-acting contactor KM1 and a reverse-acting contactor KM2 (external connection is required), six relays K1, K2, K3, K4, K5 and K6 are connected with corresponding terminal blocks, the relay K1 belongs to a forward-acting relay, mainly responsible for controlling the forward-acting contactor KM1 to be attracted according to the starting signal of the terminal block, to control the controlled equipment to run in the forward direction; the relay K2 belongs to a reverse-acting relay, mainly responsible for controlling the forward-acting contactor KM2 to be attracted according to the starting signal of the terminal block, to control the controlled equipment to run in the reverse direction; the relay K3 belongs to a remote state relay, mainly used in cooperation with the terminal block X2 or X3, to remotely control and feedback the motor controlled equipment arranged outside the electrical cabinet through the PLC; the relay K4 belongs to an open-to-position state relay, which can receive an open-to-position feedback signal while switching the relay K2, to play an interlocking protection role; K5 is a close-to-position state relay, which can receive a close-to-position feedback signal while switching the relay K1, to play an interlocking protection role; K6 is a fault state relay, which can simultaneously cut off the action of relays K1 and K2, so that the controlled equipment is in a safe state. Since the controlled equipment has only one open-to-position / close-to-position feedback signal, when the contactor KM1 is normally closed and disconnected, a set of contacts is used, and the PLC receives the full open-to-position feedback signal; when the contactor KM2 is normally closed and disconnected, the same applies, and the PLC receives the full close-to-position feedback signal.
[0034] In an embodiment, the circuit board has a size of 100*140cm, occupies less space, and has a wide range of applications.
[0035] In an embodiment, in the relay module, the relays K1, K2, K3, K4, K5 and K6 are arranged side by side, the terminal block X1 is arranged on one side of the relay module, and the terminal blocks X2 and X3 are arranged on the other side of the relay module, to form a fixed template hardware, and the electrical circuit is controlled through the fixed template hardware, which greatly reduces the assembly difficulty and ensures the convenience of later maintenance.
[0036] In an embodiment, the terminal block module further comprises a terminal block X4 and a terminal block X5 passing through the terminal block X4, to serve as a backup in later modification and innovation.
[0037] In an embodiment, the terminal block X4 and the terminal block X1 are arranged on the same side of the relay module, and the terminal block X5 and the terminal blocks X2 / X3 are arranged on the same side of the relay module.
[0038] In an embodiment, a rectangular space can be reserved between the terminal block X5 and the relay module, to set a LOGO later.
[0039] In one embodiment, the terminal array and the connecting line between the terminal array and the circuit device are arranged in a normalized manner, simplifying the connection of the wire end, and the designed PCB schematic diagram of the circuit after solidification is shown in Figure 2 The terminal array X1 includes 12 terminals, i.e., terminal X101, terminal X102, terminal X103, terminal X104, terminal X105, terminal X106, terminal X107, terminal X108, terminal X109, terminal X110, terminal X111, and terminal X112. The terminal array X2 includes 10 terminals, i.e., terminal X201, terminal X202, terminal X203, terminal X204, terminal X205, terminal X206, terminal X207, terminal X208, terminal X209, and terminal X210. The terminal array X3 includes 10 terminals, i.e., terminal X301, terminal X302, terminal X303, terminal X304, terminal X305, terminal X306, terminal X307, terminal X308, terminal X309, and terminal X310.
[0040] In one embodiment, the terminal array X1 can control the controlled devices arranged in the electrical cabinet. The 12 terminals of the terminal array X1 are divided into six areas, and each area is from right to left, i.e., a fault terminal, a reverse direction to position terminal, a positive direction to position terminal, a reverse direction action active output terminal, a positive direction action active output terminal, and a power terminal. Specifically, the terminals X101 and X102 are two power terminals, the terminals X101, X107, X109, and X111 are used to be connected with a fire wire, the terminals X102, X104, and X106 are used to be connected with a zero wire, the terminal X103 is connected with a coil of a relay K1 to control a coil of a contactor KM1, and the terminal X105 is connected with a coil of a relay K2 to control a coil of a contactor KM2. The terminal X107 is connected with a fire wire, the terminal X108 is connected with a coil of a relay K4 to receive an open to position feedback signal of the controlled device and control an open to position state of the controlled device. The terminal X109 is connected with a fire wire, the terminal X110 is connected with a coil of a relay K5 to receive a close to position feedback signal of the controlled device and control a close to position state of the controlled device. The terminal X111 is connected with a fire wire, and the terminal X112 is connected with a coil of a relay K6 to receive a fault feedback signal of the controlled device and control a fault state of the controlled device.
[0041] In one embodiment, since the controlled devices arranged outside the electrical cabinet also need to be remotely controlled and fed back in actual application, the relay K3 is arranged as a remote state relay and cooperates with the terminal array X2 or X3 to realize remote control through a PLC. Specifically, the terminals X201, X202, X203, and X204 are respectively connected with the relays K1, K2, and K3 to control the attraction of the corresponding relays through the PLC, and the terminal X205 is empty.
[0042] Specifically, the state of the relay K3 is controlled by the terminal row X3, the relay K3 is divided into an electric state and an electric state, and the electric state is controlled by the terminal row X3. The priority of the actual requirement of the field control is higher than that of the remote automatic priority.
[0043] In an embodiment, terminals X201 and X203 are connected to the live wire through the normally closed point of relay K6, i.e. in the non-fault state, and when a fault occurs, the power supply is automatically disconnected, thereby achieving the protection function. Then, through the cable connection of the automatic control equipment control point, and then back to X202 and X204 through the cable, when the relay K3 is powered, the relay K1 and K2 are attracted, thereby controlling the main control equipment to move in the positive direction and in the reverse direction. In order to form a double-layer 10P terminal row with the terminal row X3, X205 is an empty terminal, and at the same time, X201, X202, X203, X204 are isolated from X206, X207, X208, X209, X210. Because the voltage level of X201, X202, X203, X204 is AC220V, and the voltage level of X206, X207, X208, X209, X210 is DC24V, once mixed, it will cause damage to the DC24V circuit. X206 is connected to one side of the dry contact of relay K3, which is a remote feedback terminal, and the dry contact feedback of the remote state of the controlled equipment; X207 is connected to one side of the dry contact of relay K4, which is a positive direction to the feedback terminal, and the dry contact feedback of the controlled equipment to the open to the position state; X208 is connected to one side of the dry contact of relay K5, which is a reverse direction to the feedback terminal, and the dry contact feedback of the controlled equipment to the close to the position state; X209 is connected to one side of the dry contact of relay K6, which is a fault feedback terminal, and the dry contact feedback of the controlled equipment to the fault state; X210 is connected to the other side of the dry contact of relay K2, K3, K4, which is a state feedback common terminal, i.e. a COM terminal.
[0044] In an embodiment, the terminal X301 is connected to the live wire through the normally closed point of the relay K4 in the non-fault state, and is automatically disconnected from the live wire in the fault state to achieve the protection effect, and is connected to the control point of the field device through the cable, and is connected back to the terminal X302 through the local contact side of the local-remote conversion switch and the stop button, and is connected back to the terminal X303 through the forward action button to control the energization and de-energization of the relay K1, and is connected back to the terminal X304 through the reverse action button to control the energization and de-energization of the relay K1; at the same time, the terminal X301 is connected back to the terminal X305 through the remote contact of the local-remote conversion switch to control the energization and de-energization of the relay K2. The terminal X306 is a power indication terminal connected to the live wire. The terminal X307 is a forward feedback terminal connected to one side of the dry contact of the relay K4, and the other side of the dry contact is connected to the live wire. The terminal X308 is a reverse feedback terminal connected to one side of the dry contact of the relay K5, and the other side of the dry contact is connected to the live wire. The terminal X309 is a fault feedback terminal connected to one side of the dry contact of the relay K6, and the other side of the dry contact is connected to the live wire. The terminal X310 is a zero line to form a closed AC220V loop with the terminals X306, X307, X308, and X309.
[0045] In an embodiment, the terminal X306 is connected to a power indication lamp, the terminal X307 is connected to an open-to-position indication lamp, the terminal X308 is connected to a close-to-position indication lamp, and the terminal X309 is connected to a fault indication lamp, and the other end of the indication lamp is connected to the terminal X310 to indicate the state of the field device. If not needed, the related terminals can be left floating without affecting the use.
[0046] In an embodiment, the terminal row X4 includes the terminal X401, the terminal X402, the terminal X403, the terminal X404, the terminal X405, and the terminal X406, and the terminal row X5 includes the terminal X501, the terminal X502, the terminal X503, the terminal X504, the terminal X505, and the terminal X506; wherein the terminal X401 is directly connected to the terminal X501, the terminal X402 is directly connected to the terminal X502, the terminal X403 is directly connected to the terminal X503, the terminal X404 is directly connected to the terminal X504, the terminal X405 is directly connected to the terminal X505, and the terminal X406 is directly connected to the terminal X506.
[0047] In an embodiment, the existing circuit board in the art first needs an electrical designer to draw a schematic diagram as shown in Figure 3 Due to different design styles of different designers, the terminal sequence, wire number, jumper, and placement position are different, resulting in complex devices and wiring. After the PCB solidification circuit of the contactor control relay board provided in the embodiment of the present application, the wiring diagram is as shown in Figure 4As shown, each terminal connection content is fixed, manual wiring is simple and error-prone, and the design and maintenance troubles caused by various styles are greatly avoided.
[0048] In an embodiment, as Figure 4 As shown, the fuse F1 is connected between the terminal X101 and the live wire for overload protection and short circuit protection, the terminal row X1 is connected with each relay, the terminal row X2 cooperates with the relay K3, remote control is realized through the PLC, and the terminal X210 is connected with the 24V power supply G1 as a common terminal to form a common negative. In the 10 terminals of the terminal row X3, the left five terminals X301, X302, X303, X304 and X305 can be sequentially connected with five wiring ports of each control button and switch from left to right, and the right five terminals X306, X307, X308, X309 and X310 are connected with the indicator lights H9, H9, H1, H2 and H3 for feedback through the indicator lights.
[0049] As can be seen from the above, the contactor-controlled relay board provided by the embodiment of the application is configured in the non-standard industry, the connection lines between the terminal rows and the circuit devices are configured through solidified design circuit and production process, the production cost and failure rate are lower, the occupied space is smaller, the application range is wider, the work intensity of subsequent modification is reduced, and the late maintenance cost is greatly reduced.
[0050] The embodiment of the application further provides an electrical cabinet, wherein the electrical cabinet is provided with the contactor-controlled relay board according to any one of the above embodiments.
[0051] As can be seen from the above, the electrical cabinet provided by the embodiment of the application controls the internal and external electrical circuits of the cabinet through the contactor-controlled relay board, the production cost and failure rate are lower, the occupied space is smaller, the application range is wider, the work intensity of subsequent modification is reduced, and the late maintenance cost is greatly reduced.
[0052] The contactor-controlled relay board provided by the embodiment of the application is described in detail above, and for those skilled in the art, the specific embodiments and application ranges will be changed according to the idea of the embodiment of the application. In conclusion, the content of the specification should not be understood as a limitation of the application, and any change made according to the design idea of the application is within the protection scope of the application.
Claims
1. A contactor-controlled relay board, characterized in that, include: The circuit board, a terminal block module and a relay module mounted on the circuit board, wherein one end of the terminal block module is connected to a control button and the other end is connected to the relay module, and the relay module is used to connect to a contactor and a controlled device. The terminal block module includes terminal blocks X1, X2 and X3, and the relay module includes relays K1 and K2 for controlling the contactor to engage, relay K3 for controlling and providing feedback on the remote status of the controlled device, relay K4 for providing feedback on the open position status of the controlled device, relay K5 for providing feedback on the closed position status of the controlled device, and relay K6 for providing feedback on the fault status of the controlled device. Terminal block X1 is used to send control signals to the relay module to control the contactor's engagement and the real-time status of the controlled device. Terminal block X2 is used to remotely control and collect the real-time status of the controlled device via PLC. Terminal block X3 is used to remotely control and collect the real-time status of the controlled device via push-button switch.
2. The contactor-controlled relay board as described in claim 1, characterized in that, The terminal block module further includes: terminal block X4, and terminal block X5 that is directly connected to terminal block X4.
3. A contactor-controlled relay board as described in claim 1 or 2, characterized in that, The contactor includes contactor KM1 and contactor KM2, and the terminal block X1 includes terminals X101, X102, X103, X104, X105, X106, X107, X108, X109, X110, X111, and X112. Terminals X101, X107, X109, and X111 are used to connect to the live wire; terminals X102, X104, and X106 are used to connect to the neutral wire; terminal X103 is connected to the coil of relay K1 to control the coil of contactor KM1; terminal X105 is connected to the coil of relay K2 to control the coil of contactor KM2; terminal X108 is connected to the coil of relay K4 to control the open position of the controlled equipment; terminal X110 is connected to the coil of relay K5 to control the closed position of the controlled equipment; and terminal X112 is connected to the coil of relay K6 to control the fault state of the controlled equipment.
4. A contactor-controlled relay board as described in claim 1 or 2, characterized in that, The terminal block X2 is also used to remotely control the activation of relays K1 and K2 via PLC. The terminal block X2 includes terminals X201, X202, X203, X204, and X205. Terminals X201, X202, X203, and X204 are connected to the coils of relays K1 and K2 respectively, so as to remotely control the activation of relays K1 and K2 via PLC. Terminal X2:5 is empty.
5. The contactor-controlled relay board as described in claim 4, characterized in that, The terminal block X2 is also used to collect the real-time status of the controlled equipment through the PLC. The terminal block X2 also includes terminals X206, X207, X208, X209, and X210. Terminal X206 is connected to the dry contact of relay K3 to provide dry contact feedback on the remote status of the controlled device; terminal X207 is connected to the dry contact of relay K4 to provide dry contact feedback on the open position of the controlled device; terminal X208 is connected to the dry contact of relay K5 to provide dry contact feedback on the closed position of the controlled device; terminal X209 is connected to the dry contact of relay K6 to provide dry contact feedback on the fault status of the controlled device; and terminal X210 is a common terminal.
6. A contactor-controlled relay board as described in claim 1 or 2, characterized in that, The terminal block X3 includes terminals X301, X302, X303, X304, X305, X306, X307, X308, X309, and X310. Terminals X301 and X303 are used to connect to the live wire; terminals X302 and X304 are respectively connected to the interlocking points of relays K1 and K2; terminal X305 is connected to the coil of relay K3; terminal X306 is connected to the dry contact of relay K3; X307 is connected to the dry contact of relay K4; X308 is connected to the dry contact of relay K5; and X309 is connected to the dry contact of relay K6, so as to provide active feedback on the remote status, open status, closed status, and fault status of the controlled equipment, respectively; terminal X310 is used to connect to the neutral wire to form a closed loop.
7. The contactor-controlled relay board as described in claim 2, characterized in that, The terminal block X4 includes terminals X401, X402, X403, X404, X405, and X406; the terminal block X5 includes terminals X501, X502, X503, X504, X505, and X506. Among them, terminal X401 is directly connected to terminal X501, terminal X402 is directly connected to terminal X502, terminal X403 is directly connected to terminal X503, terminal X404 is directly connected to terminal X504, terminal X405 is directly connected to terminal X505, and terminal X406 is directly connected to terminal X506.
8. An electrical cabinet, characterized in that, The electrical cabinet is equipped with a contactor-controlled relay board as described in any one of claims 1-7.