Lighting signal comprehensive protection controller

Abstract

The invention discloses a lighting signal comprehensive protection controller which comprises a shell, a control panel, a relay, a contactor 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 on the top of the shell. The front of the housing is provided with three through holes, and the side is provided with a ground wire. The integrated lighting signal comprehensive protection controller provided by the invention integrates a control panel, a relay and a 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 present invention relates to the field of protection and control of lighting signal power supply, and in particular to a lighting signal comprehensive protection controller. Background Art

[0002] Conventional lighting signal integrated protectors are composed of multiple parts, such as controller, three-phase reactor, current transformer, LCD display, test circuit, etc. There are many wirings, complex system, and reduced reliability.

[0003] Moreover, in conventional methods, various devices are relatively scattered and there are many signals between them, especially when there are multiple channels, which makes the system complicated. Summary of the invention

[0004] In view of the above problems existing in the prior art, the present invention 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 object, the technical solution adopted by the present invention is:

[0006] A lighting signal integrated protection controller comprises a shell, wherein a control panel, a relay, a contactor, and three current transformers are arranged inside the shell, two rows of wiring terminals, 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, L and N terminals of the control power supply wiring terminals, 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 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, a three-core sheathed cable is used to connect to the main contact output terminals of the contactor through three insulation detection terminals respectively, and a dedicated ground wire is used as the ground wire, which is led out from the controller and used to be connected to the ground.

[0010] 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.

[0011] Furthermore, 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.

[0012] 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.

[0013] Furthermore, four corners of the bottom of the shell are provided with U-shaped fixing ears for fixing.

[0014] Furthermore, the communication interface is a CAN or MODBUS interface.

[0015] Beneficial technical effects brought by the present invention:

[0016] The present invention provides an integrated lighting signal comprehensive protection controller, which integrates a control panel, a relay and a current transformer, has the characteristics of a simple system, small space occupation and few lines, and also has the functions of display, communication with external equipment and locking protection. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A three-dimensional diagram of a lighting signal comprehensive protection controller in the present invention;

[0018] Figure 2 A top view of a lighting signal integrated protection controller in the present invention;

[0019] Figure 3 It is a front view of a lighting signal comprehensive protection controller in the present invention;

[0020] Figure 4 This is a schematic diagram of the wiring terminals of a lighting signal integrated protection controller in the present invention;

[0021] Figure 5 It is a schematic diagram of a lighting signal comprehensive protection controller in the present invention;

[0022] Figure 6 It is a schematic diagram of the control panel control relay in the present invention;

[0023] 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

[0024] The specific implementation of the present invention is further described below in conjunction with specific embodiments:

[0025] A lighting signal integrated protection controller, such as Figure 1-5 As shown, it includes a shell 1, a control panel, a relay, a contactor, and three current transformers are arranged inside the shell 1, two rows of wiring terminals 2, four status indicator lights 3, two rotary coding switches 4 and a mode selection switch 5 are arranged on the top of the shell 1; three through holes 6 are arranged in the front of the shell 1, and a ground wire 8 and a 3-core sheathed cable 9 are arranged on the side.

[0026] 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, L and N terminals of the control power supply terminal, 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 locking input interface, and a communication interface.

[0027] The relay output port indicates whether there is a fault and is used for switch quantity control.

[0028] Two external control interfaces. When the switch control mode is selected, the start and stop of the transformer can be controlled through the interface, or the reset function can be realized.

[0029] 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 closed.

[0030] The communication interface is used to access the bus, which is a CAN or MODBUS interface. In this embodiment, the CAN communication interface is selected; the contactor can be controlled, the detection status can be uploaded, the fault code can be read, and the operation mode and rated current can be set.

[0031] The mode selection switch 5 is used to select the full application mode or the signal load only mode.

[0032] Rotary coding switch 4 is 10 bits and is used for station number selection, with a selection range of 1-99.

[0033] Three through holes 6 are used to pass through the load line, two are used to pass through the two-phase line of lighting, and the third is used to pass through the one-phase line of the signal load, and is used to detect the current of the load. In this embodiment, the three through holes 6 pass through the U-phase line, V-phase line, and W-phase line of the transformer respectively. The U-phase line, V-phase line, and W-phase line are all connected in series with the main contact 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.

[0034] 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.

[0035] A three-core sheathed cable is used to connect to the main contact output terminals of the contactor through three insulation detection terminals. A dedicated ground wire 8 is drawn out from the controller to connect to the ground.

[0036] 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.

[0037] After the control board energizes the relay coil, the make 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, the V-phase line, and the W-phase line by three current transformers. If a fault occurs, the control board controls the relay coil to lose power, the make contacts of the relay are disconnected, the contactor coil loses power, and the three pairs of main contacts of the contactor are disconnected.

[0038] The 4 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 it is in operation.

[0039] U-shaped fixing ears 7 are provided at the four corners of the bottom of the housing 1 for fixing.

[0040] The ground wire is connected to the earth and is used to detect insulation conditions.

[0041] 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 protection scope 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 comprehensive 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, L and N terminals of the control power wiring terminals, 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 locking input interface, and a communication interface.

3. A lighting signal comprehensive 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 comprehensive protection controller according to claim 2, characterized in that: A three-core sheathed cable is used to connect to the main contact output terminals of the contactor through three insulation detection terminals. A dedicated ground wire is used as the ground wire, which is led out from the controller and used to connect to the ground.

5. A lighting signal comprehensive protection controller according to claim 3, characterized in that: The V-phase line is connected to the L end of the control power connection terminal, and the W-phase line is connected to the N end of the control power connection 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.

6. A lighting signal integrated protection controller according to claim 5, 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.

7. A 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.

8. 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.

9. The lighting signal integrated protection controller according to claim 1, characterized in that: The communication interface is a CAN or MODBUS interface.

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