Motor control secondary circuit module

Abstract

The utility model discloses a motor control secondary circuit module, which comprises an epoxy resin bottom plate, and a power supply terminal, a control output terminal, a control input terminal, a signal feedback output terminal, a first intermediate relay and a second intermediate relay which are arranged on the epoxy resin bottom plate, the control power supply is provided with a first power indicating lamp in series through the fuse, the control input terminal comprises a manual mode and an automatic mode, the intermediate relay serves as signal isolation between a controller output signal and a load and has the effects of control, self-locking, signal indication, signal conversion and the like, and the fuse is provided with a second indicating lamp to indicate the state of the fuse. According to the utility model, the use safety of the control power supply and the controller can be effectively protected, the use is flexible, the output configuration control is convenient, the labor is saved, and human errors in the manual construction process are prevented.

Description

Technical Field

[0001] The utility model relates to the field of electrical equipment, in particular to a motor control secondary circuit module. Background Art

[0002] At present, in general electrical control, the main circuit adopts the form of circuit breaker + contactor + protection, and the secondary circuit adopts the connection control method of fuse + intermediate relay + terminal + wire. Due to various unexpected and uncontrollable factors in the actual construction, commissioning and operation, the secondary circuit wiring and signal are inevitably virtual connection, series connection, and irregular connection, which poses a control reliability and safety hazard, and the manual work is large, and the components take up a lot of space.

[0003] The secondary circuit is the core of the power control system. If the control system is out of control, the consequences will be serious. At the very least, the equipment will not operate normally. At worst, it will cause control failure, resulting in significant economic losses or even production safety accidents. Utility Model Content

[0004] In order to solve the above problems, the utility model provides a motor control secondary circuit module, and the utility model is implemented through the following technical solutions.

[0005] A motor control secondary circuit module comprises an epoxy resin base plate and a power supply terminal, a control output terminal, a control input terminal, a signal feedback output terminal, a first intermediate relay and a second intermediate relay arranged on the epoxy resin base plate;

[0006] Each terminal is provided with a terminal label, and the terminal is numbered by the terminal label. The power terminal includes L and N terminals, the control output terminal includes 1A, 2A and 3A terminals; the control input terminal includes 1D, 2D, 3D, 4D and 5D terminals, and the signal feedback output terminal includes 1B, 1C, 2B, 2C, 3B and 3C terminals. Terminals with the same number are electrically connected, and terminals 4D and 1A are electrically connected;

[0007] The L and N terminals are electrically connected to the two poles of the control power supply, a fuse and a green first indicator light are connected in series between the L and N terminals, the fuse and the first indicator light are electrically connected to the 1D terminal through a first wire, and a red second indicator light is also connected in parallel to the fuse.

[0008] Further, a first voltage-limiting resistor is connected between the first indicator light and the N terminal, and a second voltage-limiting resistor is connected between the second indicator light and the fuse.

[0009] Furthermore, the control power supply is AC220V.

[0010] Furthermore, the control input terminal has two control modes: manual and automatic. The manual control mode needs to be controlled by connecting to an operating column, and the automatic control mode needs to be controlled by connecting to a PLC / DCS control signal.

[0011] Furthermore, the DCS / PLC control signal is connected to the 4D and 5D terminals, the control switch signal of the operating column is connected to the 1D, 3D, 4D and 5D terminals, the operating column status is only connected to the 2A and 3A terminals, and the signal feedback output terminal is connected to the DCS / PLC control signal.

[0012] Furthermore, the active control voltage output by the control output terminal is AC220V, the controlled contactor is connected to terminals 1A and N, the operation feedback of the controlled contactor is connected to terminals 2D and 1D, and the fault feedback of the controlled contactor is connected to terminals 3B and 3C.

[0013] Furthermore, a third indicator light is provided on the first intermediate relay, and the first intermediate relay transmits the automatic control signal to the DCS / PLC through the first signal line.

[0014] Furthermore, a fourth indicator light is provided on the second intermediate relay, and the normally open contact of the second intermediate relay is self-locked in parallel with the 3D and 4D terminals through the second wire, and transmits the operation signal to the DCS / PLC through the second signal line.

[0015] Furthermore, the 3B and 3C terminals transmit the fault signal to the DCS / PLC via a third signal line.

[0016] The beneficial effects of the utility model are as follows:

[0017] 1. This module concentrates all control components on a circuit board. The wiring between components and between components and terminals is welded with high-current wiring, which is reliable and error-free. It solves the possibility of signal line connection failure due to human error, thus preventing the occurrence of the situation where the entire related control system is out of control due to human reasons.

[0018] 2. The module power supply is provided with a first signal indicator light to indicate that the signal is normal. The fuse is provided with a second signal indicator light. When the fuse is blown, the second indicator light lights up in red, so as to facilitate finding the fault point. The error position can be quickly located and the fault point can be found, thereby improving the maintenance efficiency and shortening the maintenance time.

[0019] 3. The module is small in size, supports installation on a variety of standard guide rails, generates little heat, and can be centrally arranged. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solution of the present invention, the drawings required for use in the description of the specific implementation methods will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 : A schematic diagram of the structure of the utility model;

[0022] Figure 2 : Schematic diagram of a typical control circuit of the present utility model.

[0023] The reference numerals are as follows:

[0024] 1-epoxy resin base plate, 2-first intermediate relay, 3-second intermediate relay, 4-fuse, 5-first indicator light, 6-first wire, 7-second indicator light, 8-first voltage limiting resistor, 9-second voltage limiting resistor, 10-third indicator light, 11-first signal line, 12-fourth indicator light, 13-second wire, 14-second signal line, 15-third signal line. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] like Figure 1-2 As shown, a motor control secondary circuit module includes an epoxy resin base plate 1 and a power supply terminal, a control output terminal, a control input terminal, a signal feedback output terminal, a first intermediate relay 2 and a second intermediate relay 3 arranged on the epoxy resin base plate 1;

[0027] Each terminal is provided with a terminal label, and the terminals are numbered by the terminal label. The power terminals include L and N terminals, the control output terminals include 1A, 2A and 3A terminals; the control input terminals include 1D, 2D, 3D, 4D and 5D terminals, and the signal feedback output terminals include 1B, 1C, 2B, 2C, 3B and 3C terminals. Terminals with the same number are electrically connected, and terminals 4D and 1A are electrically connected;

[0028] The L and N terminals are electrically connected to the two poles of the control power supply, a fuse 4 and a green first indicator light 5 are connected in series between the L and N terminals, the fuse 4 and the first indicator light 5 are electrically connected to the 1D terminal through a first wire 6, and a red second indicator light 7 is also connected in parallel to the fuse 4.

[0029] Preferably, a first voltage-limiting resistor 8 is connected between the first indicator light 5 and the N terminal, and a second voltage-limiting resistor 9 is connected between the second indicator light 7 and the fuse 4 .

[0030] Preferably, the control power supply is AC220V.

[0031] Preferably, the control input terminal has two control modes: manual and automatic. The manual control mode needs to be controlled by connecting to an operating column, and the automatic control mode needs to be controlled by connecting to a PLC / DCS control signal.

[0032] Preferably, the DCS / PLC control signal is connected to the 4D and 5D terminals, the control switch signal of the operating column is connected to the 1D, 3D, 4D and 5D terminals, the operating column status is only connected to the 2A and 3A terminals, and the signal feedback output terminal is connected to the DCS / PLC control signal.

[0033] Preferably, the active control voltage output by the control output terminal is AC220V, the controlled contactor is connected to terminals 1A and N, the operation feedback of the controlled contactor is connected to terminals 2D and 1D, and the fault feedback of the controlled contactor is connected to terminals 3B and 3C.

[0034] Preferably, a third indicator light 10 is provided on the first intermediate relay 2 , and the first intermediate relay 2 transmits the automatic control signal to the DCS / PLC through the first signal line 11 .

[0035] Preferably, a fourth indicator light 12 is provided on the second intermediate relay 3 , the normally open contact of the second intermediate relay 3 is self-locked in parallel with the 3D and 4D terminals through the second wire 13 , and the operation signal is transmitted to the DCS / PLC through the second signal line 14 .

[0036] Preferably, terminals 3B and 3C transmit the fault signal to the DCS / PLC via the third signal line 15 .

[0037] A specific implementation of the utility model is:

[0038] When the present application is in use, the L and N terminals are electrically connected to the two poles of the control power supply, the coil live wire of the contactor KM1 is connected to the normally closed contact of the thermal relay FR1, the other end of the normally closed contact of the thermal relay FR1 is connected to the 1A terminal, the normally open contact of the contactor KM1 is connected to the 1D and 2D terminals, the normally open contact of the thermal relay FR1 is connected to the 3B and 3C, the signal feedback output terminals (1B, 1C, 2B, 2C, 3B, 3C) are connected to the PLC, the 4D and 5D terminals are connected to the PLC output control, the 1D terminal is connected to the three-speed conversion switch SW1 of the operating column, the SW1 automatic control switch is connected to the 5D terminal, the SW1 manual control switch is connected to the stop button ST1, the stop button ST1 is connected to the start button SB1 and the 3D terminal, the start button SB1 is connected to the 4D terminal, the 2A terminal is connected to the stop indicator light of the operating column, and the 3A terminal is connected to the running indicator light of the operating column. After the main circuit breaker is powered on, if the fuse 4 is normal, the first indicator light 5D0 will light up, and if the fuse 4FU0 is broken, the second indicator light 7D1 will light up. SW1 switches to the automatic control position, the third indicator light 10 on the first intermediate relay 2 lights up, the automatic control signal is transmitted to the PLC, then the 1A terminal is energized, the contactor KM1 coil is energized and attracted, and the motor starts. The fourth indicator light 12 on the second intermediate relay 3 lights up, and the equipment operation feedback signal is transmitted to the PLC. Then 1A loses power, the contactor KM1 coil loses power and disconnects, and the motor stops. If the thermal relay FR1 acts, the contactor KM1 disconnects, and the fault signal is transmitted to the PLC. When the motor stops, the operation stop indicator light HR1 lights up, and when the motor runs, the operation indicator light HG1 on the operating column lights up. SW1 switches to the manual control position, the third indicator light 10 on the first intermediate relay 2 goes out, press the start button SB1, the contactor KM1 is energized and attracted, the motor starts, the fourth indicator light 12 on the second intermediate relay 3 lights up, the equipment operation feedback signal is transmitted to the PLC, press the stop button ST1, the contactor KM1 loses power and disconnects, and the motor stops.

[0039] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to only specific implementation methods. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A motor control secondary circuit module, comprising an epoxy resin base plate and a power supply terminal, a control output terminal, a control input terminal, a signal feedback output terminal, a first intermediate relay and a second intermediate relay arranged on the epoxy resin base plate, characterized in that: Each terminal is provided with a terminal label, and the terminal is numbered by the terminal label. The power terminal includes L and N terminals, the control output terminal includes 1A, 2A and 3A terminals; the control input terminal includes 1D, 2D, 3D, 4D and 5D terminals, and the signal feedback output terminal includes 1B, 1C, 2B, 2C, 3B and 3C terminals. Terminals with the same number are electrically connected, and terminals 4D and 1A are electrically connected; The L and N terminals are electrically connected to the two poles of the control power supply, a fuse and a green first indicator light are connected in series between the L and N terminals, the fuse and the first indicator light are electrically connected to the 1D terminal through a first wire, and a red second indicator light is also connected in parallel to the fuse.

2. A motor control secondary circuit module according to claim 1, characterized in that: A first voltage-limiting resistor is connected between the first indicator light and the N terminal, and a second voltage-limiting resistor is connected between the second indicator light and the fuse.

3. The motor control secondary circuit module according to claim 1, characterized in that: The control power supply is AC220V.

4. The motor control secondary circuit module according to claim 1, characterized in that: The control input terminal has two control modes: manual and automatic. The manual control mode needs to be controlled by connecting to an operating column, and the automatic control mode needs to be controlled by connecting to a PLC / DCS control signal.

5. A motor control secondary circuit module according to claim 4, characterized in that: The DCS / PLC control signal is connected to the 4D and 5D terminals, the control switch signal of the operating column is connected to the 1D, 3D, 4D and 5D terminals, the operating column status is only connected to the 2A and 3A terminals, and the signal feedback output terminal is connected to the DCS / PLC control signal.

6. A motor control secondary circuit module according to claim 5, characterized in that: The active control voltage output by the control output terminal is AC220V, the controlled contactor is connected to the 1A and N terminals, the operation feedback of the controlled contactor is connected to the 2D and 1D terminals, and the fault feedback of the controlled contactor is connected to the 3B and 3C terminals.

7. A motor control secondary circuit module according to claim 6, characterized in that: The first intermediate relay is provided with a third indicator light, and the first intermediate relay transmits the automatic control signal to the DCS / PLC through the first signal line.

8. The motor control secondary circuit module according to claim 7, characterized in that: The second intermediate relay is provided with a fourth indicator light. The normally open contact of the second intermediate relay is self-lockingly connected in parallel with the 3D and 4D terminals through the second wire, and transmits the operation signal to the DCS / PLC through the second signal line.

9. A motor control secondary circuit module according to claim 8, characterized in that: The 3B and 3C terminals transmit the fault signal to the DCS / PLC via the third signal line.

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