A one-button parameter configuration device for mining frequency converters

Abstract

This utility model discloses a one-button parameter configuration device for mining frequency converters, belonging to the technical field of industrial automation. This utility model uses physical buttons, with each button's normally open contact connected to a different digital input terminal of a PLC controller. Each digital input terminal is bound to a configuration parameter group transmission command. Operators can transmit configuration parameter groups through simple button operations. By connecting a touchscreen to the PLC controller, operators can intuitively collect the frequency converter's attribute data. Because the PLC controller pre-stores relevant configuration parameter group data, it can select the appropriate configuration parameter group to send based on the collected data, improving configuration accuracy. Since the PLC controller connects to the touchscreen via an RS-422 interface and to both the touchscreen and the frequency converter via an RS-485 interface, this communication method ensures accurate data transmission.

Description

Technical Field

[0001] This utility model belongs to the technical field of industrial automation, specifically relating to a one-button parameter configuration device for mining frequency converters. Background Technology

[0002] A frequency converter (VDC) is a power control device that uses frequency conversion technology and microelectronics to control the speed of an AC motor by changing the frequency of the motor's power supply. ABB VDCs are primarily used for speed control in coal mining machines, playing a crucial role in the entire electrical system. With the increasing number of VDC devices, the variety of VDC parameters is also increasing. Current technology involves configuring these parameters using a computer and ABB fiber optic modules. However, the demanding environment required for computer operation necessitates configuring each VDC in a specific space. Furthermore, the need for ABB fiber optic modules places demands on network infrastructure. This results in high costs, a cumbersome configuration process, and lengthy setup times for ABB VDC parameter configuration.

[0003] In summary, the existing ABB frequency converter parameter configurations suffer from low configuration efficiency and high configuration costs. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a one-button parameter configuration device for mining frequency converters, which is small in size, light in weight and easy to carry, in order to address the shortcomings of the prior art.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0006] A one-button parameter configuration device for a mining frequency converter includes a PLC controller, a touch screen, a power module, and at least two physical buttons; the power module is connected to the PLC controller and the display screen for power supply.

[0007] The PLC controller is equipped with expansion interface 1 and expansion interface 2. Expansion interface 1 is connected to the RS-422 interface of the touch screen, and expansion interface 2 is used to connect to the RS-485 interface of the frequency converter.

[0008] The PLC controller has a built-in memory that stores configuration parameter groups for the frequency converter and a table showing the correspondence between frequency converter attribute data and configuration parameter groups; the PLC controller collects frequency converter attribute data through a touch screen.

[0009] Each button's normally open contact is connected to a different digital input terminal of the PLC controller, and the button's common terminal is connected to the PLC controller's common terminal; each digital input terminal of the PLC controller is bound to a configuration parameter group transmission instruction.

[0010] The PLC controller, frequency converter, and touch screen all use the ModBus communication protocol for data interaction.

[0011] Furthermore, the PLC controller and the frequency converter use a master-slave communication protocol for data exchange, with the PLC controller acting as the master station.

[0012] Furthermore, the inverter attribute data includes rated voltage, rated current, rated frequency, rated speed, rated power, traction method, and inverter type.

[0013] Furthermore, the configuration parameter group includes acceleration / deceleration time, motor rotation direction, motor shutdown method, motor voltage upper and lower limits, torque boost, and communication parameters.

[0014] Furthermore, the power module includes a 220VAC main power supply and an AC / DC transformer, wherein the AC / DC transformer converts 220VAC to 24VDC to power the touch screen, and the 220VAC main power supply directly powers the controller.

[0015] Furthermore, an air switch is connected in series on the live wire of the power supply module.

[0016] Furthermore, the PLC controller adopts the CP1H-X40DR-A controller, and both expansion interface 1 and expansion interface 2 adopt the CP1W-CIF12 option board.

[0017] Furthermore, the touchscreen uses the NS10-TV00B-ECV2 touchscreen.

[0018] This utility model has the following advantages compared with the prior art:

[0019] This invention utilizes physical buttons, with each button's normally open contact connected to a different digital input terminal of the PLC controller, and each digital input terminal bound to a configuration parameter group transmission command. Operators can transmit configuration parameter groups through simple button operations. By connecting a touchscreen to the PLC controller, operators can intuitively collect the inverter's attribute data. Using the PLC controller for inverter parameter configuration offers better adaptability to the operating environment of mining inverters compared to existing PC devices, as the PLC controller pre-stores relevant configuration parameter group data, allowing it to select appropriate parameters based on the collected data. Sending appropriate configuration parameter sets improves configuration accuracy. Since the PLC controller interacts with the data based on the ModBus protocol and connects to the touchscreen and frequency converter via RS-422 and RS-485 interfaces respectively, these interfaces have strong anti-interference capabilities, making them suitable for use in mining environments where electromagnetic interference may exist. The ModBus protocol itself also has a data verification mechanism, ensuring that the frequency converter attribute data collected from the touchscreen and the configuration parameters sent to the frequency converter can be exchanged accurately during data transmission. This communication method guarantees the accuracy of data transmission.

[0020] The technical solution of this utility model will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0021] Figure 1 This is a circuit block diagram of an embodiment of a one-button mining frequency converter parameter configuration device of the present invention;

[0022] Figure 2 This is a circuit block diagram of the power module of an embodiment of a one-button mining frequency converter parameter configuration device of the present invention.

[0023] Figure 3 This is a schematic diagram of the graphical interface of a touch screen in an embodiment of a one-button mining frequency converter parameter configuration device of the present invention. Detailed Implementation

[0024] An embodiment of a one-button parameter configuration device for mining frequency converters:

[0025] like Figure 1 , Figure 2As shown, a one-button parameter configuration device for a mining frequency converter includes a PLC controller, a touch screen, a power supply module, and at least two physical buttons; the power supply module is connected to both the PLC controller and the display screen. The PLC controller is a CP1H-X40DR-A controller, and the touch screen is an NS10-TV00B-ECV2 touch screen. The function of this parameter configuration device is to send configuration parameter sets to the frequency converter, facilitating the frequency converter's control of the coal mining machine's motor based on the configuration parameter sets.

[0026] To facilitate operation of the PLC controller, the PLC controller is equipped with expansion interface 1 and expansion interface 2. Expansion interface 1 connects to the RS-422 interface of the touch screen, and expansion interface 2 connects to the RS-485 interface of the frequency converter. Both expansion interfaces 1 and 2 utilize the CP1W-CIF12 option board. Data transmission can be achieved by connecting the touch screen and the frequency converter via the RS-422 and RS-485 interfaces respectively. Compared to existing fiber optic communication methods, this application offers lower communication costs and is more adaptable to the working environment of coal mining machines. The touch screen facilitates viewing relevant data from the PLC controller and allows operators to easily input data that the PLC controller needs to collect. Expansion interface 2 connects to the frequency converter to be configured; this frequency converter is replaceable. For example, if the frequency converter is an ACS800 frequency converter, the A, B, and GND interfaces of the RMBA-01 module connected to this frequency converter are connected to expansion interface 2 to achieve communication.

[0027] To facilitate the PLC controller in sending corresponding available configuration parameter sets based on the inverter's attribute data, the PLC controller has an internal memory that stores the inverter's configuration parameter sets and a mapping table between inverter attribute data and configuration parameter sets. The PLC controller also collects inverter attribute data via a touchscreen. This eliminates the need for the user to manually input and consult relevant data when sending configuration parameter sets to the inverter. The user selects the corresponding configuration parameter set based on the data stored in the PLC controller.

[0028] Specifically, the inverter attribute data includes rated voltage, rated current, rated frequency, rated speed, rated power, traction method, and inverter type. The configuration parameter group includes acceleration / deceleration time, motor rotation direction, motor shutdown method, motor voltage upper and lower limits, torque boost, and communication parameters.

[0029] like Figure 1As shown, to facilitate the rapid distribution of configuration parameter groups to the frequency converter, the normally open contacts of each button are connected to different digital input terminals of the PLC controller, and the common terminal of the button is connected to the common terminal of the PLC controller. Each digital input terminal of the PLC controller is bound to a configuration parameter group transmission command. In this embodiment, two buttons are provided, SB1 and SB2, because the frequency converter only needs to send two configuration parameter groups, corresponding to the digital input terminals of the PLC controller, OCH.00 and OCH.01, respectively. A spare button SB3 is also provided, with the corresponding digital input terminal being OCH.02.

[0030] To ensure the accuracy and reliability of data transmission, the PLC controller uses the ModBus communication protocol for data interaction with the frequency converter and touch screen.

[0031] To ensure simple and efficient communication, the PLC controller and the frequency converter use a master-slave communication protocol for data exchange, with the PLC controller acting as the master station. Because the master station can control the pace and sequence of communication, communication conflicts can be effectively avoided.

[0032] like Figure 2 As shown, the power module includes a 220VAC main power supply and an AC / DC transformer. The AC / DC transformer converts the 220VAC to 24VDC to power the touchscreen, while the 220VAC main power supply directly powers the controller. A power bank can be used as needed. An air switch is connected in series on the live wire of the power module's power supply line. Figure 2 F1 in the diagram represents a circuit breaker. SQ1 represents a push-button switch, used to control the on / off state of the circuit.

[0033] To facilitate assembly and connection, a terminal block 1X1 is also included, which includes four terminals. The 220VAC main power supply live wire L and neutral wire N are electrically connected to the L1 and N terminals of the PLC controller through terminals 1X11 and 1X12. The output terminal of the 24VAC power supply is electrically connected to the power input terminal of the touch screen through terminals 1X13 and 1X14.

[0034] Current inverter parameter configuration technology involves combining a computer and an ABB configuration module to configure parameter data. This combination requires an additional fiber optic cable, making it inconvenient to carry and cumbersome to operate, significantly increasing the workload of operators. Furthermore, the lack of data backup necessitates manual input of parameters. Sometimes, on-site parameter configuration requires operating the computer underground, which necessitates an external AC 220V power supply, which is often unavailable on-site. This results in significant waste of human and material resources for on-site data configuration, troubleshooting, and manual input.

[0035] This design adopts an integrated design, combining all the necessary functional modules together, which greatly saves physical space and reduces the weight of the original equipment. The system device is small in size and can be moved by a single person. The configuration work can be completed through simple button operation. The software program arranges and processes the configuration data, and the detailed status of the configuration data can be intuitively observed on the touch screen. The configuration system is also equipped with a fuse module to protect the internal system from damage caused by high voltage entering the system.

[0036] Current inverter parameter configuration technology relies on a combination of a computer and ABB modules, requiring additional fiber optic cables, resulting in bulky and inconvenient equipment. Manual parameter input and troubleshooting by operators are time-consuming and error-prone. This traditional method not only increases labor costs but also reduces work efficiency. This design adopts an integrated design, combining all required functional modules together, significantly saving physical space, reducing the weight of the original equipment, and making the system compact enough to be moved by a single person. Configuration can be completed through simple button operations, and detailed configuration data can be displayed intuitively on a touchscreen.

[0037] The above description is merely a preferred embodiment of the present utility model and does not constitute any limitation on the present utility model. Any simple modifications, alterations, or equivalent structural changes made to the above embodiments based on the technical essence of the present utility model shall still fall within the protection scope of the present utility model.

Claims

1. A one-button parameter configuration device for a mining frequency converter, characterized in that: It includes a PLC controller, a touch screen, a power module, and at least two physical buttons; the power module is connected to supply power to both the PLC controller and the display screen. The PLC controller is equipped with expansion interface 1 and expansion interface 2. Expansion interface 1 is connected to the RS-422 interface of the touch screen, and expansion interface 2 is used to connect to the RS-485 interface of the frequency converter. The PLC controller has a built-in memory that stores configuration parameter groups for the frequency converter and a table showing the correspondence between frequency converter attribute data and configuration parameter groups; the PLC controller collects frequency converter attribute data through a touch screen. Each button's normally open contact is connected to a different digital input terminal of the PLC controller, and the button's common terminal is connected to the PLC controller's common terminal; each digital input terminal of the PLC controller is bound to a configuration parameter group transmission instruction. The PLC controller, frequency converter, and touch screen all use the ModBus communication protocol for data interaction.

2. The one-button parameter configuration device for a mining frequency converter according to claim 1, characterized in that: The PLC controller and the frequency converter use a master-slave communication protocol for data interaction, with the PLC controller acting as the master station.

3. The one-button parameter configuration device for a mining frequency converter according to claim 1, characterized in that: The inverter attribute data includes rated voltage, rated current, rated frequency, rated speed, rated power, traction method, and inverter type.

4. A one-button parameter configuration device for a mining frequency converter according to claim 1, characterized in that: The configuration parameter group includes acceleration / deceleration time, motor rotation direction, motor stopping method, motor voltage upper and lower limits, torque boost, and communication parameters.

5. A one-button parameter configuration device for a mining frequency converter according to claim 1, characterized in that: The power module includes a 220VAC main power supply and an AC / DC transformer, wherein the AC / DC transformer converts 220VAC to 24VDC to power the touch screen, and the 220VAC main power supply directly powers the controller.

6. A one-button parameter configuration device for a mining frequency converter according to any one of claims 1 or 5, characterized in that: An air switch is connected in series on the live wire of the power supply module.

7. A one-button parameter configuration device for a mining frequency converter according to claim 1, characterized in that: The PLC controller is a CP1H-X40DR-A controller, and both expansion interface 1 and expansion interface 2 use the CP1W-CIF12 option board.

8. A one-button parameter configuration device for a mining frequency converter according to claim 1, characterized in that: The touchscreen is an NS10-TV00B-ECV2 touchscreen.

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