Lighting signal comprehensive protection controller

Abstract

The utility model discloses a lighting signal comprehensive protection controller which comprises a shell, a control panel, a relay and three current transformers are arranged in the shell, and two rows of wiring terminals, four state indicating lamps, two rotary coding switches and a mode selection switch are arranged at the top of the shell. Three through holes are formed in the front face of the shell, and a ground wire and a three-core sheath cable are arranged on the side face of the shell. The integrated lighting signal comprehensive protection controller provided by the utility model integrates the control panel, the relay and the current transformer, has the characteristics of simple system, small occupied space and few lines, and also has the functions of display, communication with external equipment and latch-up protection.

Description

Technical Field

[0001] The utility model relates to the field of protection and control of lighting signal power supply, in particular to a lighting signal comprehensive protection controller. Background Art

[0002] Conventional lighting signal integrated protectors consist of multiple parts, including a controller, three-phase reactor, current transformer, LCD, test circuit, etc. They have many wiring connections, a complex system, and reduced reliability.

[0003] Moreover, in conventional methods, various devices are relatively dispersed and there are many signals between them, especially when there are multiple channels, which makes the system complex. Utility Model Content

[0004] In view of the above problems existing in the prior art, the utility model proposes a lighting signal comprehensive protection controller, which has a reasonable design, solves the shortcomings of the prior art, and has good effects.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A lighting signal integrated protection controller includes a shell, a control panel, a relay, a contactor, and three current transformers are arranged inside the shell, two rows of terminal blocks, four status indicator lights, two rotary coding switches, and a mode selection switch are arranged on the top of the shell; three through holes are arranged in the front of the shell, and a ground wire is arranged on the side.

[0007] Furthermore, the wiring terminals include L1 and N1 terminals for connecting the contactor coil, F1A and F1B terminals for connecting the normally open auxiliary contacts of the contactor, control power wiring terminals L and N, A and B terminals for connecting the platinum thermal resistor sensor, three insulation detection terminals U, V and W, two relay output ports, two external control interfaces, a locking input interface, and a communication interface.

[0008] Furthermore, the three through holes are used to pass through the U-phase line, V-phase line, and W-phase line of the transformer. The U-phase line, V-phase line, and W-phase line are all provided with main contacts of the contactor and current transformers in series. The three current transformers are used to measure the U-phase line, V-phase line, and W-phase line.

[0009] Furthermore, the V-phase line is connected to the L-end of the control power terminal, and the W-phase line is connected to the N-end of the control power terminal, which are used to provide control power. The control power is used to power the control board and the contactor coil, and the control board is used to power the relay.

[0010] Furthermore, the control power terminal L is connected to the normally closed contact of the relay, the normally closed contact of the relay is connected to one end of the contactor coil, and the control power terminal N is connected to the other end of the contactor coil; the control board is connected to the relay coil and the normally open auxiliary contact of the contactor.

[0011] Furthermore, the four status indicator lights include a power indicator light, a communication indicator light, a fault indicator light and a contactor status indicator light.

[0012] Furthermore, U-shaped fixing ears are provided at the four corners of the bottom of the shell for fixing.

[0013] Beneficial technical effects brought by this utility model:

[0014] The utility model provides an integrated lighting signal comprehensive protection controller, which integrates a control panel, a relay, and a current transformer. It has the characteristics of a simple system, small space occupation, and few lines. It also has the functions of display, communication with external equipment, and locking protection. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a three-dimensional diagram of a lighting signal integrated protection controller in the present utility model;

[0016] Figure 2 This is a top view of a lighting signal integrated protection controller in the present utility model;

[0017] Figure 3 This is a front view of a lighting signal integrated protection controller in the present utility model;

[0018] Figure 4 This is a schematic diagram of the wiring terminals of a lighting signal integrated protection controller in the present utility model;

[0019] Figure 5 This is a schematic diagram of a lighting signal integrated protection controller in the present utility model;

[0020] Figure 6 This is a schematic diagram of the control panel controlling the relay in the present utility model;

[0021] Among them, 1-housing; 2-terminal; 3-status indicator light; 4-rotary coding switch; 5-mode selection switch; 6-through hole; 7-fixing ear; 8-ground wire; 9-three-core sheathed cable; DETAILED DESCRIPTION

[0022] The specific implementation of the present invention is further described below with reference to specific embodiments:

[0023] A lighting signal integrated protection controller, such as Figure 1-5As shown, the device comprises a housing 1, inside which are arranged a control panel, a relay, a contactor, and three current transformers; the top of the housing 1 is provided with two rows of terminal blocks 2, four status indicator lights 3, two rotary coding switches 4, and a mode selection switch 5; the front of the housing 1 is provided with three through holes 6, and the side is provided with a ground wire 8.

[0024] Terminal block 2 includes L1 and N1 terminals for connecting the contactor coil, F1A and F1B terminals for connecting the normally open auxiliary contacts of the contactor, control power supply terminals L and N, A and B terminals for connecting the platinum thermal resistor sensor PT100, three insulation detection terminals U, V and W, a relay output port, two external control interfaces, a lock input interface, and a communication interface.

[0025] The relay output port indicates whether there is a fault and is used for switch quantity control.

[0026] Two external control interfaces are used to control the start and stop of the transformer or to implement the reset function.

[0027] The lock input interface is a normally closed input. When it is disconnected, the controller is in a non-working state and the contactor cannot be attracted.

[0028] The communication interface is used to access the bus and is a CAN or MODBUS interface. In this embodiment, the CAN communication interface is selected.

[0029] Mode selection switch 5 is used to select full application mode or signal load only mode.

[0030] Rotary coding switch 4 has 10 positions and is used for station number selection, with a selection range of 1-99.

[0031] Three through-holes 6 are used to pass through the load line, two for passing through the two-phase lighting line, and the third for passing through the single-phase signal load line to detect the load current. In this embodiment, the three through-holes 6 respectively pass through the U-phase line, V-phase line, and W-phase line of the transformer. Three current transformers are used to measure the current of the U-phase line, V-phase line, and W-phase line; the U-phase line, V-phase line, and W-phase line are respectively connected to the three input main contacts of the contactor, and the three output main contacts are respectively connected to the load terminal.

[0032] The V-phase line is connected to the L-end of the control power terminal, and the W-phase line is connected to the N-end of the control power terminal to provide control power. The control power is used to power the control board and contactor coil, and the control board is used to power the relay.

[0033] The three insulation detection terminals U, V and W are led out from the controller through a three-core sheathed cable 9, with the three core wires corresponding to the U, V and W terminals; the ground wire 8 is led out through an independent ground wire for connecting to the ground.

[0034] like Figure 6 As shown, the control board is connected to the relay coil, the control power supply terminal L is connected to the normally closed contact of the relay KA, the normally closed contact of the relay is connected to one end of the contactor coil through the L1 terminal, and the control power supply terminal N is connected to the other end of the contactor coil through the N1 terminal; the control board is also connected to the normally open auxiliary contact of the contactor, and is connected to the platinum thermal resistance sensor through the A terminal and the B terminal.

[0035] After the control board energizes the relay coil, the normally closed contacts of the relay are attracted, thereby energizing the contactor coil, connecting the three pairs of main contacts of the contactor, and measuring the currents of the U-phase line, V-phase line, and W-phase line through the three current transformers. If a fault occurs, the control board controls the relay coil to lose power, the normally closed contacts of the relay are disconnected, the contactor coil loses power, and the three pairs of main contacts of the contactor are disconnected.

[0036] The four status indicator lights 3 are used to check the working status of the control, including a power indicator light, indicating whether the controller has power, a communication indicator light, which is always on if the bus is not connected and flashes if the bus is connected, a fault indicator light, which is on if there is a fault, and a contactor status indicator light, which is on if the controller is in operation.

[0037] U-shaped fixing ears 7 are provided at the four corners of the bottom of the housing 1 for fixing.

[0038] The ground wire is connected to the earth and is used to detect insulation conditions.

[0039] Of course, the above description is not a limitation of the present invention, and the present invention is not limited to the above examples. Changes, modifications, additions or substitutions made by technicians in this technical field within the essential scope of the present invention should also fall within the scope of protection of the present invention.

Claims

1. A lighting signal integrated protection controller, characterized in that: It includes a shell, inside which are arranged a control board, a relay, a contactor, and three current transformers; the top of the shell is provided with two rows of wiring terminals, four status indicator lights, two rotary coding switches and a mode selection switch; the front of the shell is provided with three through holes, and the side is provided with a ground wire.

2. A lighting signal integrated protection controller according to claim 1, characterized in that: The wiring terminals include L1 and N1 terminals for connecting the contactor coil, F1A and F1B terminals for connecting the normally open auxiliary contacts of the contactor, control power wiring terminals L and N, A and B terminals for connecting the platinum thermal resistance sensor, three insulation detection terminals U, V and W, two relay output ports, two external control interfaces, a lock input interface, and a communication interface.

3. A lighting signal integrated protection controller according to claim 2, characterized in that: The three through holes are used to pass through the U-phase line, V-phase line and W-phase line of the transformer. The U-phase line, V-phase line and W-phase line are all connected in series with the main contacts of the contactor and the current transformer. The three current transformers are used to measure the U-phase line, V-phase line and W-phase line.

4. A lighting signal integrated protection controller according to claim 3, characterized in that: The V-phase line is connected to the L end of the control power terminal, and the W-phase line is connected to the N end of the control power terminal, which is used to provide control power. The control power is used to power the control board and the contactor coil, and the control board is used to power the relay.

5. A lighting signal integrated protection controller according to claim 4, characterized in that: The control power supply terminal L is connected to the normally closed contact of the relay, the normally closed contact of the relay is connected to one end of the contactor coil, and the control power supply terminal N is connected to the other end of the contactor coil; the control board is connected to the relay coil and the normally open auxiliary contact of the contactor.

6. The lighting signal integrated protection controller according to claim 1, characterized in that: The four status indicator lights include a power indicator light, a communication indicator light, a fault indicator light and a contactor status indicator light.

7. The lighting signal integrated protection controller according to claim 1, characterized in that: The four corners of the bottom of the shell are provided with U-shaped fixing ears for fixing.

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