CN214252956U - Control device for controlling frequency conversion all-in-one machine and frequency conversion all-in-one machine system - Google Patents
Control device for controlling frequency conversion all-in-one machine and frequency conversion all-in-one machine system Download PDFInfo
- Publication number
- CN214252956U CN214252956U CN202120394125.2U CN202120394125U CN214252956U CN 214252956 U CN214252956 U CN 214252956U CN 202120394125 U CN202120394125 U CN 202120394125U CN 214252956 U CN214252956 U CN 214252956U
- Authority
- CN
- China
- Prior art keywords
- circuit
- control
- signal
- machine
- control device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Communication Control (AREA)
Abstract
The utility model discloses a controlling means and frequency conversion all-in-one system for controlling frequency conversion all-in-one. The control device comprises an I/O circuit, a control circuit and a CAN communication circuit which are connected in sequence. The I/O circuit is used for sending an external control signal received from the external control equipment to the control circuit and sending an output signal of the control circuit to the external control equipment; the control circuit is used for converting an external control signal into a CAN control signal and sending the CAN control signal to the CAN communication circuit and sending a CAN output signal received from the CAN communication circuit to the I/O circuit. The CAN communication circuit is used for sending CAN control signals to the frequency conversion all-in-one machine and sending CAN output signals received from the frequency conversion all-in-one machine to the control circuit. Because the utility model discloses a controlling means has the signal conversion function, can use various types of external control equipment to control the frequency conversion all-in-one, and need not reprogramming when changing external control equipment.
Description
Technical Field
The present invention relates generally to the field of electric machines. More specifically, the utility model relates to a controlling means and frequency conversion all-in-one system for being controlled frequency conversion all-in-one.
Background
The frequency conversion all-in-one machine is equipment which integrates a frequency converter part and a motor part to form a driving unit. Compared with the structure that the prior frequency converter is separated from the motor, the frequency conversion all-in-one machine has the characteristics of simple structure, small occupied space, convenience in maintenance and the like.
The underground coal mine is a widely used occasion of the frequency conversion all-in-one machine. In general, a down-conversion all-in-one machine needs a small-sized human-machine controller to perform control such as driving, and specifically, control data is input through a human-machine interface of the human-machine controller. Currently, a Controller Area Network ("CAN") open protocol is used inside the human-machine Controller to communicate with the frequency converter of the frequency converter all-in-one machine, for example, to read data output by the frequency converter of the frequency converter all-in-one machine and to send control data to the frequency converter of the frequency converter all-in-one machine, so that the frequency converter controls the motor according to the control data.
However, in general, mine mining conditions are variable, and therefore, a plurality of control devices of a plurality of manufacturers need to be coordinated and matched to control the frequency conversion all-in-one machine according to the change of the mine conditions. Because the types of different control devices, such as ports, of different manufacturers are different and the human-machine controller is placed downhole, the human-machine controller needs to be programmed downhole when the different control devices are replaced. This practice is often time consuming, labor intensive and carries a safety risk.
Disclosure of Invention
At least to the defect among the above-mentioned background art, the embodiment of the utility model provides a controlling means and frequency conversion all-in-one system for controlling frequency conversion all-in-one. Because the utility model discloses a control circuit has and to convert external control equipment's input signal into the signal that is applicable to the inside communication protocol of frequency conversion all-in-one to convert the signal conversion of frequency conversion all-in-one output into the conversion function of the signal that is applicable to external control equipment, can use various types of external control equipment to control frequency conversion all-in-one, also need not reprogramming when using the external control equipment of different grade type moreover. Therefore, adopt the utility model discloses controlling means as external control equipment and frequency conversion all-in-one has labour saving and time saving and saves the cost and to the dangerous operation environment such as in the pit higher advantage of security.
In a first aspect, the utility model provides a controlling means for being controlled frequency conversion all-in-one, include: the frequency conversion integrated machine comprises an I/O circuit, a control circuit and a CAN communication circuit which are sequentially connected, wherein the I/O circuit is used for sending an external control signal received from an external control device to the control circuit and sending an output signal of the control circuit to the external control device, and the external control signal is used for controlling the frequency conversion integrated machine; the control circuit is used for converting the external control signal into a CAN control signal and sending the CAN control signal to the CAN communication circuit, and is also used for sending a CAN output signal received from the CAN communication circuit to the I/O circuit; and the CAN communication circuit is used for sending the CAN control signal to the frequency conversion all-in-one machine and sending a CAN output signal received from the frequency conversion all-in-one machine to the control circuit.
In one embodiment, the control circuit further comprises an RS485 communication interface used for communicating with an external control device, receiving a serial control signal used for controlling the frequency conversion all-in-one machine from the external control device and sending an output signal of the control circuit to the external control device.
In one embodiment, the I/O circuit includes a plurality of control interfaces for connection with the external control device, and the control apparatus further includes a mode selection circuit configured to connect a path between the I/O circuit and the control circuit or to connect the RS485 communication interface of the control circuit with the RS485 communication interface of the external control device according to a selection of a mode.
In one embodiment, the mode selection circuit includes a dip switch.
In one embodiment, the I/O circuit includes an optical coupler and a relay, the optical coupler and the relay are respectively connected to the control circuit, the optical coupler is configured to receive the external control signal and send the external control signal to the control circuit, and the relay is configured to receive the output signal and send the output signal to the external control device.
In one embodiment, the control circuit further comprises a power supply circuit, wherein the power supply circuit is connected with the control circuit and is used for providing direct current power supply for the control circuit.
In one embodiment, the external control signal comprises a starting signal, a steering signal, a reset signal or a voltage driving signal for operating the variable frequency all-in-one machine, and the output signal comprises an operation signal or a fault signal.
In a second aspect, the utility model also provides a frequency conversion all-in-one machine system, include: an external control device; a frequency conversion all-in-one machine; and the control device is used for controlling the frequency conversion all-in-one machine.
In one embodiment, the external control device comprises an RS485 communication interface, and the control circuit is connected with the RS485 communication interface of the external control device.
In one embodiment, the external control device includes a plurality of I/O interfaces, the I/O circuitry being coupled to the I/O interfaces.
Based on the above-mentioned about the utility model discloses the description of scheme can know because control circuit has and can be applicable to the signal of the inside communication protocol of frequency conversion all-in-one with external control equipment's input signal conversion to signal conversion that is applicable to external control equipment's signal with frequency conversion all-in-one output's conversion function. Therefore, the control device of the present invention has no particular requirements or restrictions on the type of external control device connected thereto. Therefore, the utility model discloses a scheme supports various types of external control equipment to control the frequency conversion all-in-one. In addition, the control device provided by the embodiment of the invention does not need to be reprogrammed when different types of external control equipment are replaced. Therefore, adopt the utility model discloses controlling means as external control equipment and frequency conversion all-in-one machine's controlling means has labour saving and time saving and saves cost's advantage. Further, since the external control device does not need to be reprogrammed when replaced, safety is high for a dangerous working environment such as a downhole environment.
Drawings
The above and other objects, features and advantages of exemplary embodiments of the present invention will become readily apparent from the following detailed description read in conjunction with the accompanying drawings. In the accompanying drawings, several embodiments of the present invention are illustrated by way of example and not by way of limitation, and like reference numerals designate like or corresponding parts throughout the several views:
fig. 1 is a schematic block diagram of a control device for controlling a variable frequency all-in-one machine according to an embodiment of the present invention;
fig. 2 is a schematic block diagram of a control device for controlling a variable frequency all-in-one machine according to another embodiment of the present invention;
fig. 3 is a schematic block diagram of a control device for controlling a variable frequency all-in-one machine according to another embodiment of the present invention;
fig. 4 is a schematic block diagram of a frequency conversion all-in-one machine system according to an embodiment of the present invention; and
fig. 5 is a schematic block diagram of a frequency conversion all-in-one machine system according to another embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, of the embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by the skilled in the art without creative work belong to the protection scope of the present invention.
Fig. 1 is a schematic block diagram of a control device 2 for controlling a variable frequency all-in-one machine according to an embodiment of the present invention.
As shown in fig. 1, the control device 2 of the present invention may include: an I/O circuit 201, a control circuit 202 and a CAN communication circuit 203 which are connected in sequence. Wherein the I/O circuit 201 is configured to transmit an external control signal received from an external control device to the control circuit 202, and to transmit an output signal of the control circuit 202 to the external control device. And the external control signal is used for controlling the frequency conversion all-in-one machine. The control circuit 202 is configured to convert the external control signal into a CAN control signal and transmit the CAN control signal to the CAN communication circuit 203, and is configured to transmit a CAN output signal received from the CAN communication circuit 203 to the I/O circuit 201. The CAN communication circuit 203 is configured to send the CAN control signal to the variable frequency all-in-one machine, and is configured to send a CAN output signal received from the variable frequency all-in-one machine to the control circuit 202.
In one particular embodiment, the control circuit 202 may include a Microcontroller Unit ("MCU"). MCU is small, can realize multiple functions, is convenient for realize the utility model discloses well control circuit 202's multiple functions. And the CAN communication circuit 203 may include a CAN chip. The CAN chip is small, CAN reduce CAN communication circuit 203's volume, and the CAN chip of being convenient for CAN realize multiple functions, consequently makes the utility model discloses well CAN communication circuit 203 also CAN realize multiple functions. Of course, the control circuit 202 and the CAN communication circuit 203 may also be other electronic components or integrated circuits, which is not limited in the present invention.
The embodiment of the utility model provides a when external control equipment sends control signal to frequency conversion all-in-one, at first pass through IO circuit 201 will follow external control equipment received external control signal send to control circuit 202. And the external control signal is used for controlling the frequency conversion all-in-one machine. The control circuit 202 then converts the external control signal to a CAN control signal and sends it to the CAN communication circuit 203. Finally, the CAN communication circuit 203 sends the CAN control signal to the frequency conversion all-in-one machine. When the variable frequency all-in-one machine sends an output signal to external control equipment, firstly, the CAN communication circuit 203 sends the CAN output signal received from the variable frequency all-in-one machine to the control circuit 202. The control circuit 202 then sends the CAN output signal to the I/O circuit 201 (where the output signal sent to the I/O circuit 201 is the I/O output signal that the control circuit 202 converts the CAN output signal). Finally, the I/O circuit 201 transmits the output signal of the control circuit 202 to the external control device. In a specific implementation scenario, the external control signal may include a start signal, a steering signal, a reset signal or a voltage driving signal for operating the convertible frequency all-in-one machine, and the output signal may include an operation signal or a fault signal. Of course, the external control signal and the output signal may also be other types of signals, which the present invention is not limited to. To sum up, the embodiment of the utility model provides a can realize the IO data transmission of external control equipment and frequency conversion all-in-one.
As can be seen from the above description, the control circuit 202 in the embodiment of the present invention has a conversion function that can convert the input signal of the external control device into a signal suitable for the communication protocol inside the frequency conversion all-in-one machine, and convert the signal output by the frequency conversion all-in-one machine into a signal suitable for the external control device. Therefore, the control device 2 of the present invention has no particular requirement or limitation on the type of the external control apparatus connected thereto. Therefore, the utility model discloses a scheme supports various types of external control equipment to control the frequency conversion all-in-one. In addition, the control device 2 according to the embodiment of the present invention does not need to be reprogrammed when different types of external control devices are replaced. Therefore, adopt the utility model discloses controlling means 2 as external control equipment and frequency conversion all-in-one machine's controlling means 2 has labour saving and time saving and saves cost's advantage. Further, since the external control device does not need to be reprogrammed when replaced, safety is high for a dangerous working environment such as a downhole environment.
In one embodiment, the control device 2 of the present invention can be installed in the box of the external control device, so as to make the external control device more integrated.
As shown in fig. 2, the control circuit 202 further includes an RS485 communication interface 2021 for communicating with an external control device. The RS485 communication interface 2021 of the control circuit 202 is configured to receive a serial control signal for controlling the variable frequency all-in-one machine from an external control device, and is configured to send an output signal of the control circuit 202 to the external control device (here, the output signal sent to the control device is a serial output signal formed by converting a CAN output signal by the control circuit 202). Therefore, the embodiment of the utility model provides a can realize the serial ports data transmission of external control equipment and frequency conversion all-in-one.
The I/O circuit 201 in the above embodiments includes a plurality of control interfaces 2022 for connection with the external control devices. The control device 2 further comprises a mode selection circuit configured to connect a via connection between the I/O circuit 201 and the control circuit 202 or to connect the RS485 communication interface 2021 of the control circuit 202 with the RS485 communication interface 101 (see fig. 5 for details) of the external control device in accordance with a selection of a mode.
In the embodiment of the present invention, the I/O circuit 201 and the channel between the control circuits 202 can be connected in advance through the mode selection circuit, and the RS485 communication interface 2021 of the control circuit 202 and the RS485 communication interface 101 of the external control device are also connected, so as to meet the requirements of the external control devices of different types. The use of the mode selection circuit to select the connection path between the external control device and the inverter all-in-one machine makes the structure of the control device 2 simple. In one embodiment, the mode selection circuit may include a dip switch, and the path of the connection may be selected by the switch position of the dip switch. The dial switch has simple structure, convenient realization and high reliability, can ensure the reliability of the selection of the access, thereby ensuring the working reliability of the control device 2, simplifying the structure of the control device 2 and ensuring the easy realization of the selection of the access. Of course, the mode selection circuit can also be realized by other electronic components, and the present invention is not limited thereto.
In one implementation scenario, the I/O circuit 201 includes an optocoupler and a relay, which are respectively connected to the control circuit 202. The optocoupler is configured to receive the external control signal and send the external control signal to the control circuit 202. Since the optical coupler has good isolation, the input and output of the I/O circuit 201 can be electrically isolated from each other, and the reliability of signal input can be improved. The relay is used for receiving the output signal and sending the output signal to the external control equipment. Since the relay has high reliability, the reliability of signal output can be improved by using the relay as an output switch of the I/O circuit 201.
As shown in fig. 3, the control device 2 further includes a power circuit 204, and the power circuit 204 is connected to the control circuit 202 and is configured to provide a dc power to the control circuit 202. The voltage of the dc power supply is a voltage value adapted to the control circuit 202.
The control device 2 described in the above embodiment needs to be configured with the frequency conversion all-in-one machine before operation to establish communication connection. When the control device 2 and the frequency conversion all-in-one machine are configured, firstly, the control mode is judged according to the setting of the mode selection circuit. Then, the control circuit 202 sends a motor type query instruction to the variable frequency all-in-one machine through the CAN communication circuit 203, and the variable frequency all-in-one machine feeds back a motor type ID to the control circuit 202 according to the motor type query instruction, wherein the motor type ID comprises a motor type. The control circuit 202 obtains the motor type according to the motor model, and determines whether the motor type is the motor type supported by the control circuit 202 (the control circuit 202 may store the motor type of each variable frequency all-in-one machine in advance. If the motor type of the variable frequency all-in-one machine is the motor type supported by the control circuit 202, the motor model ID is stored in the control circuit 202.
After the motor model ID is saved, the control circuit 202 may prepare an SDO configuration stream for communication with the variable frequency all-in-one machine. Preparing the SDO configuration stream includes the control circuit 202 sending Service Data Objects ("SDO") Data to the convertible frequency all-in-one machine, the manner of Data feedback performed by the convertible frequency all-in-one machine, and the specific instruction used for Data sending. The SDO Data includes a Data type required by the control circuit 202, the Data feedback mode may include a Data flow mode and a feedback speed, and the Data flow mode may be a Process Data Object (PDO) flow. According to different application scenarios, the instruction for data transmission may be, for example, a starting signal, a steering signal, and a speed signal transmitted to the variable frequency all-in-one machine through a certain PDO command.
Next, the control circuit 202 sends an inquiry command for inquiring whether the variable frequency all-in-one machine is on-line to the variable frequency all-in-one machine. If the variable frequency integrated machine is on-line (if the variable frequency integrated machine can work normally), the variable frequency integrated machine feeds back a feedback signal indicating that the variable frequency integrated machine is on-line to the control circuit 202, and then the control circuit 202 sends the prepared SDO configuration stream to the variable frequency integrated machine. If the convertible all-in-one is disconnected, it can feed back a feedback signal indicating that it is not on-line, such as a fault signal, to the control circuit 202. After the SDO configuration stream is sent, the control device 2 may perform PDO data stream communication with the frequency conversion all-in-one machine. The communicating of the PDO data stream may specifically include the frequency conversion all-in-one machine packing its corresponding parameters into the PDO after receiving the SDO configuration stream data and feeding back the parameters in a feedback manner required by the control circuit 202. In one scenario, the variable frequency integrated machine may periodically feed back the present current, the present speed, and the bus voltage signal to the control circuit 202, for example, at 0.5s intervals. After the configuration operation between the control device 2 and the inverter-unified machine is completed in the foregoing manner, both the control device 2 and the inverter-unified machine can start the normal operation.
Fig. 4 is a schematic block diagram of a frequency conversion all-in-one machine system according to an embodiment of the present invention.
As shown in fig. 4, the utility model discloses a frequency conversion all-in-one machine system can include: the device comprises an external control device 1, a frequency conversion all-in-one machine 3 and a control device 2 for controlling the frequency conversion all-in-one machine.
In conjunction with the foregoing description of the control apparatus 2, those skilled in the art will understand that the control apparatus has a conversion function of converting an input signal of the external control device 1 into a signal suitable for a communication protocol inside the convertible all-in-one machine 3, and converting a signal output by the convertible all-in-one machine 3 into a signal suitable for the external control device 1. Therefore, the control device 2 of the present invention has no particular requirement or limitation on the type of the external control apparatus 1 connected thereto. Therefore, the utility model discloses a scheme supports various types of external control equipment 1 to the control of frequency conversion all-in-one 3. In addition, the control device 2 according to the embodiment of the present invention does not need to be reprogrammed when different types of external control apparatuses 1 are replaced. Therefore, adopt the utility model discloses controlling means 2 as external control equipment 1 and frequency conversion all-in-one 3's controlling means 2 has labour saving and time saving and cost-effective advantage. Further, since the external control device does not need to be reprogrammed when replaced, safety is high for a dangerous working environment such as a downhole environment.
For the above frequency conversion all-in-one machine system, as shown in fig. 5, the external control device 1 may include an RS485 communication interface 101, and the control circuit 202 is connected to the RS485 communication interface 101 of the external control device 1, and is configured to send a serial control signal to the control apparatus 2 or receive an output signal sent by the control apparatus 2. The external control device 1 may further include a plurality of I/O interfaces 102, and the I/O circuit 201 is connected to the I/O interfaces 102 and configured to transmit an I/O control signal to the control apparatus 2 or receive an output signal transmitted by the control apparatus 2. Therefore, the utility model discloses external control equipment 1 can realize with the serial ports data transmission or the IO data transmission of frequency conversion all-in-one 3.
Those of ordinary skill in the art will understand that: all or part of the steps for implementing the method embodiments may be implemented by hardware related to program instructions, and the program may be stored in a computer readable storage medium, and when executed, the program performs the steps including the method embodiments; and the aforementioned storage medium includes: various media that can store program codes, such as ROM, RAM, magnetic or optical disks.
The above-described embodiments of the electronic device and the like are merely illustrative, where the units described as separate parts may or may not be physically separate, and the parts displayed as units may or may not be physical units, may be located in one place, or may also be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
Through the above description of the embodiments, those skilled in the art will clearly understand that each embodiment can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware. With this understanding in mind, the above-described technical solutions may be embodied in the form of a software product, which can be stored in a computer-readable storage medium such as ROM/RAM, magnetic disk, optical disk, etc., and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the methods described in the embodiments or some parts of the embodiments.
It should be understood that when the terms "first", "second", "third", fourth ", etc. are used in the claims, the specification and the drawings of the present invention, they are used only for distinguishing different objects, and not for describing a particular order. The terms "comprises" and "comprising," when used in the specification and claims of the present invention, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.
It is also to be understood that the terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the specification and claims of this application, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should be further understood that the term "and/or" as used in the specification and claims of the present invention refers to any and all possible combinations of one or more of the associated listed items and includes such combinations.
The above embodiments are only used to illustrate the technical solutions of the embodiments of the present invention, and not to limit the same; although embodiments of the present invention have been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (10)
1. The utility model provides a controlling means for being directed at frequency conversion all-in-one machine carries out control which characterized in that includes: an I/O circuit, a control circuit and a CAN communication circuit which are connected in sequence,
the I/O circuit is used for sending an external control signal received from external control equipment to the control circuit and sending an output signal of the control circuit to the external control equipment, wherein the external control signal is used for controlling the frequency conversion all-in-one machine;
the control circuit is used for converting the external control signal into a CAN control signal and sending the CAN control signal to the CAN communication circuit, and is also used for sending a CAN output signal received from the CAN communication circuit to the I/O circuit; and
the CAN communication circuit is used for sending the CAN control signal to the frequency conversion all-in-one machine and sending a CAN output signal received from the frequency conversion all-in-one machine to the control circuit.
2. The control device of claim 1, wherein the control circuit further comprises an RS485 communication interface for communicating with an external control device, for receiving a serial control signal for controlling the variable frequency all-in-one machine from the external control device, and for sending an output signal of the control circuit to the external control device.
3. The control apparatus of claim 2, wherein the I/O circuit comprises a plurality of control interfaces for connection with the external control device, the control apparatus further comprising a mode selection circuit configured to connect a path between the I/O circuit and the control circuit or to connect the RS485 communication interface of the control circuit with the RS485 communication interface of the external control device according to a selection of a mode.
4. The control device of claim 3, wherein the mode selection circuit comprises a dip switch.
5. The control device of claim 1, wherein the I/O circuit comprises an optocoupler and a relay, the optocoupler and the relay being respectively connected to the control circuit, the optocoupler being configured to receive the external control signal and send the external control signal to the control circuit, and the relay being configured to receive the output signal and send the output signal to the external control apparatus.
6. The control device according to any one of claims 1-5, further comprising a power circuit connected to the control circuit for providing dc power to the control circuit.
7. The control device according to any one of claims 1 to 5, wherein the external control signal comprises a start signal, a steering signal, a reset signal or a voltage driving signal for operating the variable frequency all-in-one machine, and the output signal comprises an operation signal or a fault signal.
8. A frequency conversion all-in-one machine system is characterized by comprising:
an external control device;
a frequency conversion all-in-one machine; and
the control device for controlling the variable-frequency all-in-one machine according to any one of claims 1 to 7.
9. The variable-frequency all-in-one machine system according to claim 8, wherein the external control device comprises an RS485 communication interface, and the control circuit is connected with the RS485 communication interface of the external control device.
10. The variable frequency all-in-one machine system according to claim 8, wherein the external control device comprises a plurality of I/O interfaces, and the I/O circuit is connected to the I/O interfaces.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120394125.2U CN214252956U (en) | 2021-02-22 | 2021-02-22 | Control device for controlling frequency conversion all-in-one machine and frequency conversion all-in-one machine system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120394125.2U CN214252956U (en) | 2021-02-22 | 2021-02-22 | Control device for controlling frequency conversion all-in-one machine and frequency conversion all-in-one machine system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214252956U true CN214252956U (en) | 2021-09-21 |
Family
ID=77728385
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120394125.2U Active CN214252956U (en) | 2021-02-22 | 2021-02-22 | Control device for controlling frequency conversion all-in-one machine and frequency conversion all-in-one machine system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214252956U (en) |
-
2021
- 2021-02-22 CN CN202120394125.2U patent/CN214252956U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP2472939B1 (en) | System and method for monitoring parallel base station power supply | |
| CN204116932U (en) | Expedition pump station control system | |
| US20170093310A1 (en) | Bluetooth motor controller, brushless direct current motor, and multi-motor system comprising the same | |
| CN106533874B (en) | A kind of permanent magnet synchronous motor data communication system and method based on Modbus rtu protocol | |
| CN102130669A (en) | Method, system, device and network equipment for detecting state of hot-plug module | |
| CN104378137A (en) | Repeater and information transmission method thereof | |
| CN111542130A (en) | Method and device for controlling household appliance and terminal equipment | |
| CN104378273A (en) | Method and bus management device for configuring MVB networks and relays | |
| CN104597827A (en) | Smart electric control execution system supporting loop redundancy control and control method thereof | |
| CN214252956U (en) | Control device for controlling frequency conversion all-in-one machine and frequency conversion all-in-one machine system | |
| CN101639685B (en) | Assembly control method, assembly control system and assembly control equipment | |
| JP2009005361A (en) | Power line communication for control center | |
| CN201550064U (en) | Multi-motor synchronous control device | |
| CN105116838A (en) | Numerical-control cutter changing control device and method | |
| EP2533400B1 (en) | Inverter, inverter communication system, communication method thereof | |
| US6668209B2 (en) | Injection molding machine arrangement | |
| CN204989930U (en) | NC cutting tool tool changing controlling means | |
| AU2009311067A1 (en) | Master-slave mode direct current carrier communication system | |
| CN102576222B (en) | For the method for operation site bus interface | |
| CN211015116U (en) | Equipment switching system | |
| CN211918407U (en) | One-inlet four-outlet switch module device for power distribution of direct current charging pile | |
| CN103269189A (en) | Mine locomotive single-frequency-converter and double-frequency-converter automatic shifting operating device and control method | |
| CN203217282U (en) | Mechano-electronic integrated switch | |
| CN204462766U (en) | The intelligent electric of support loop Redundant Control controls executive system | |
| CN201638070U (en) | Electric control system of CAN bus modularized coal mining machine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |