A dual motor drive

Abstract

The utility model discloses a double motor driver. The driver includes circuit board, is provided with power unit, main control unit, first drive unit, second drive unit, communication unit, display unit and corresponding detection unit and IO unit on the circuit board. The driver power supply port is composed of the pin 8EDGRC 3.5 03P and the plug 8EDGK 3.5 03P, has logic power positive pole, system reference ground, motor power positive pole, supports two power supply modes of single power supply and double power supply. The first IO unit and the second IO unit respectively include function IO port and extension IO port, and the function IO port supports PNP and NPN input and output mode, and the extension IO port is directly connected with the photoelectric sensor with the power supply unit. The mechanical structure includes the fin, the light guide column and the shell. The utility model can drive control two electric roller simultaneously, realizes the NPN / PNP compatible access of IO port, can cut off the motor power supply and keep the logic power supply in the emergency, improves the system integration and the security.

Description

Technical Field

[0001] This utility model relates to the field of motor control technology, and in particular to a dual-motor driver. Background Technology

[0002] With the rapid development of industrial automation technology, electric rollers, as core components of material conveying systems, are playing an increasingly important role in modern production lines. Traditional motor drives typically employ a single-motor control scheme, with each drive controlling only one motor. This design has significant limitations in applications requiring coordinated control of multiple motors. While existing motor drives support multiple protocols for industrial fieldbus communication, their I / O interface compatibility design remains insufficient, especially when connecting different types of sensors, requiring additional signal conditioning circuitry. Furthermore, the power supply system design of existing drives is relatively simple, typically providing only a single power supply mode, failing to achieve independent control of motor power and logic power in emergency situations. This poses a potential risk in industrial environments with high safety requirements.

[0003] Existing motor drivers suffer from the following technical limitations: First, they lack a single I / O interface type, failing to simultaneously support both NPN and PNP input / output methods. This necessitates additional interface conversion circuits when connecting sensors from different manufacturers, increasing system complexity and cost. Second, they lack integrated power supply functionality, requiring independent power supplies for external sensors, thus increasing installation and maintenance difficulty. Third, in multi-motor synchronous control applications, multiple independent drivers are needed for coordinated control, occupying more installation space and increasing the complexity and potential for failure in the control system. These limitations severely impact the high efficiency, high reliability, and ease of maintenance requirements of modern automated production lines, urgently necessitating the development of a new driver solution capable of simultaneously driving multiple motors with comprehensive I / O interface compatibility and flexible power supply options. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a dual-motor driver.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A dual-motor driver, comprising: The circuit board has the following components: The power supply unit is used to convert the input voltage to 12V and 5V. The main control unit uses the Renesas R7FA4M2A series microcontroller; The first drive unit and the second drive unit are respectively connected to the first motor port of the driver and the second motor port of the driver; The first detection unit and the second detection unit are used to detect the operating parameters of the corresponding motors, respectively. The communication unit is provided with a first communication port and a second communication port for the driver. The first communication port and the second communication port for the driver are connected in parallel using an RJ45 connector. The driver power supply port consists of a pin 8EDGRC-3.5-03P and a plug 8EDGK-3.5-03P, and has a logic power positive terminal LOG+, a system reference ground GND, and a motor power positive terminal MDR+. USB port for the driver; The first I / O unit includes a first functional I / O port of the driver and a first extended I / O port of the driver; the second I / O unit includes a second functional I / O port of the driver and a second extended I / O port of the driver. Driver for OLED displays; Drive a first-speed rotary encoder, drive a first-acceleration / deceleration time rotary encoder, drive a second-speed rotary encoder, drive a second-acceleration / deceleration time rotary encoder; Also includes: The housing includes the driver housing shell and the driver housing film; The first heat sink and the second heat sink are connected to the circuit board through the heat sink and circuit board mounting holes; Light guide column, including 9mm flat-head light guide column.

[0006] Furthermore, the first and second function I / O ports of the driver are composed of connector pins 8EDGRC-2.5-05P and plugs 8EDGK-2.5-05P, supporting PNP and NPN input / output modes.

[0007] Furthermore, the first and second extended I / O ports of the driver are composed of ECON-B034 connector pins and ECON-xx03-P / ECON-xx03-S plugs. The extended I / O ports are equipped with power supply units and support PNP and NPN input / output modes.

[0008] Furthermore, the driver OLED display is a 0.96-inch OLED display used to display the voltage, current, MOS temperature, operating speed, set speed, fault code, and acceleration / deceleration time of the first and second motors.

[0009] Furthermore, the model of the first speed rotary encoder, the first acceleration / deceleration time rotary encoder, the second speed rotary encoder, and the second acceleration / deceleration time rotary encoder is SA-7050B.

[0010] Furthermore, the driver also includes a first function DIP switch and a second function DIP switch, the model of which is EM-08KP.

[0011] Furthermore, the first motor port and the second motor port of the driver are 9P 2.54mm pitch connectors, model number CS-1001R-09K.

[0012] The beneficial effects of this utility model are as follows: 1. The I / O ports of the electric roller driver can be connected in NPN / PNP mode.

[0013] 2. The IO ports of this system are divided into general-purpose IO ports and IO ports with power supply units. IO ports with power supply units are convenient for connecting photoelectric sensors, enabling quick installation and increasing the convenience of the system.

[0014] 3. The power supply port has both logic power and motor power. In an emergency, the motor power can be cut off while the logic power is maintained. Under safe conditions, communication within the system can be maintained and appropriate processing can be performed.

[0015] 4. One driver can simultaneously drive and control two electric rollers, enabling synchronous control of the electric rollers.

[0016] The above description is merely an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this utility model more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the control circuit structure of a dual-motor driver according to the present invention; Figure 2 This is a schematic diagram of a single power supply for a dual-motor driver according to the present invention; Figure 3 This is a schematic diagram of a dual power supply for a dual motor driver according to the present invention; Figure 4 This is a schematic diagram of the overall structure of a dual-motor driver according to the present invention; Figure 5 This is an exploded view of a dual-motor driver according to the present invention.

[0018] In the diagram: 1. First heat sink; 101. Mounting hole for heat sink and circuit board; 102. Second heat sink; 2. Light guide post; 201. 9mm flat-head light guide post; 3. Housing; 301. Driver housing film; 302. Driver housing shell; 4. Circuit board; 401. Driver OLED display; 402. Driver first motor port; 403. Driver second motor port; 404. Driver first function I / O port; 405. Driver second function I / O port; 406. Driver first expansion I / O port; 407. Driver second expansion I / O port; 408. Driver first communication port; 409. Driver second communication port; 410. Driver power supply port; 411. Driver USB port; 412. Driver first speed rotary encoder; 413. Driver first acceleration / deceleration time rotary encoder; 414. Driver second speed rotary encoder; 415. Driver second acceleration / deceleration time rotary encoder. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0020] This utility model provides a dual-motor driver, mainly applied in the fields of motor control technology and industrial fieldbus technology. The driver adopts a modular design, enabling simultaneous driving and control of two electric rollers, achieving synchronous control of the electric rollers, and significantly improving the integration and control efficiency of industrial automation systems.

[0021] The dual-motor driver control circuit consists of a power supply unit, a communication unit, a display unit, an indicator light unit, a main control unit, a first detection unit, a first drive unit, a first setting unit, a first I / O unit, a second detection unit, a second drive unit, a second setting unit, a second I / O unit, a driver power supply port 410, a driver first communication port 408, a driver second communication port 409, a first indicator light, a second indicator light, a driver first motor port 402, a driver second motor port 403, a driver first functional I / O port 404, a driver first extended I / O port 406, a driver second functional I / O port 405, and a driver second extended I / O port 407.

[0022] The driver power supply port 410 connector consists of a pin 8EDGRC-3.5-03P and a plug 8EDGK-3.5-03P, and has three interfaces: logic power positive LOG+, system reference ground GND, and motor power positive MDR+, enabling both single power supply and dual power supply operation modes.

[0023] In single-power-supply mode, the positive terminal of the power supply is connected to the MDR+ port of the driver card, and the 0V power supply is connected to the GND port of the driver card, simultaneously powering the motor circuit of the electric roller and the logic circuit of the driver. In dual-power-supply mode, LOG+ provides an independent logic power supply, which can be configured with an emergency stop switch to cut off the power supply to the electric roller while maintaining power to the driver card chip. In an emergency, the driver card can still maintain communication functionality after the electric roller loses power, ensuring system safety. Regardless of the power supply mode used, the 0V terminals of different power supplies must be connected together and then connected to the driver's GND.

[0024] The power supply unit supports 24V or 48V input voltage and adopts a dual-channel DC-DC power conversion architecture. The input power is converted into 12V and 5V voltages respectively through two DC-DC power supplies. The 12V power supply provides power to the first and second drive units; the 5V power supply provides power to the logic control circuits such as the communication unit, display unit, indicator light unit, main control unit, and first detection unit.

[0025] The main control unit uses the Renesas R7FA4M2A series microcontroller as its core controller. This microcontroller features high performance and low power consumption, meeting the real-time requirements of synchronous control of dual motors. The main control unit is responsible for coordinating the work of various functional modules, processing communication protocols, and executing motor control algorithms.

[0026] The communication unit supports multiple communication protocols, including but not limited to RS485, CAN bus, and Ethernet, and can support standard Modbus and CANOpen protocols. Both the driver's first communication port 408 and the driver's second communication port 409 use RJ45 connectors, and the two communication ports are connected in parallel, enabling bus cascading and facilitating the construction of a distributed control network.

[0027] The display unit uses a driver OLED display 401, a 0.96-inch OLED display with high contrast and low power consumption. The driver OLED display 401 can display the driver's operating status information in real time, including important parameters such as voltage, current, MOSFET temperature, actual operating speed, set speed, fault codes, acceleration and deceleration time of the first and second motors, providing users with intuitive equipment status monitoring.

[0028] The indicator unit includes multiple status indicators, specifically a power indicator, a system status indicator, a first motor operation indicator, a first communication data transmission / reception indicator, a first communication connection status indicator, a second motor operation indicator, a second communication data transmission / reception indicator, and a second communication connection status indicator. Through combinations of different colors and flashing patterns, it provides users with quick information to determine the device's operating status. The light from the indicator lights is transmitted to the outer casing surface via light guide posts 2 for easy observation by the user.

[0029] The detection unit is divided into a first detection unit and a second detection unit, corresponding to the detection functions of the two motor channels respectively. The first detection unit includes functions such as first total voltage detection, first total current detection, first MOS temperature detection, first motor temperature detection, first motor short circuit detection, and first motor Hall position detection. The second detection unit has the same detection function configuration, ensuring comprehensive monitoring of both motor channels.

[0030] The drive unit includes a first drive unit and a second drive unit, which are respectively connected to the first motor port 402 and the second motor port 403 of the driver. The first motor port 402 and the second motor port 403 of the driver use 9-pin 2.54mm pitch connectors, model CS-1001R-09K or equivalent connectors. Each drive unit has independent PWM control capability, enabling precise motor speed and position control.

[0031] The setting unit is divided into a first setting unit and a second setting unit, providing users with convenient parameter configuration functions. The first setting unit includes a driver first speed rotary encoder 412, a driver first acceleration / deceleration time rotary encoder 413, and a first function DIP switch. The second setting unit includes a driver second speed rotary encoder 414, a driver second acceleration / deceleration time rotary encoder 415, and a second function DIP switch. The driver first speed rotary encoder 412, driver first acceleration / deceleration time rotary encoder 413, driver second speed rotary encoder 414, and driver second acceleration / deceleration time rotary encoder 415 all use the SA-7050B model, and the DIP switch uses the EM-08KP model to ensure the accuracy and reliability of the settings.

[0032] The IO unit includes a first IO unit and a second IO unit. Each IO unit is divided into two parts: a functional IO port and an extended IO port.

[0033] Regarding the functional I / O ports, the driver's first functional I / O port 404 and the driver's second functional I / O port 405 are composed of connector pins 8EDGRC-2.5-05P and plugs 8EDGK-2.5-05P, supporting PNP and NPN input / output modes, and can adapt to the interface requirements of different types of sensors and actuators.

[0034] Regarding the expansion I / O ports, the driver's first expansion I / O port 406 and the driver's second expansion I / O port 407 consist of connector pins ECON-B034 and plugs ECON-xx03-P / ECON-xx03-S, and also support PNP and NPN input / output modes. The expansion I / O ports have power supply units, allowing direct connection to power-required sensor devices such as photoelectric sensors, enabling quick installation and increasing system convenience.

[0035] The USB port 411 of the driver provides convenient program updates, parameter configuration and debugging functions for the device, facilitating device maintenance and function upgrades.

[0036] The driver's mechanical structure consists of three main parts: a first heat sink 1, a second heat sink 102, a circuit board 4, and a housing 3. The first and second heat sinks 1 and 102 are made of aluminum alloy, providing excellent heat dissipation. They are reliably connected to the circuit board 4 via mounting holes 101. The housing 3 includes a driver housing film 301 and a driver housing shell 302, providing a good level of protection. The light guide post 2 includes a 9mm flat-head light guide post 201 to ensure effective transmission of indicator light.

[0037] Example 1 Reference Figure 1 The schematic diagram of the dual-motor driver control circuit shown in this embodiment provides a specific implementation scheme for a dual-motor driver.

[0038] The circuit board 4 integrates all functional units, including the driver OLED display 401, the driver first motor port 402, the driver second motor port 403, the driver first functional IO port 404, the driver second functional IO port 405, the driver first expansion IO port 406, the driver second expansion IO port 407, the driver first communication port 408, the driver second communication port 409, the driver power supply port 410, the driver USB port 411, and other interfaces.

[0039] The user interface includes a first speed rotary encoder 412, a first acceleration / deceleration time rotary encoder 413, a second speed rotary encoder 414, and a second acceleration / deceleration time rotary encoder 415, providing users with intuitive parameter setting functions.

[0040] Example 2 Reference Figure 2The diagram shown illustrates a single power supply. In single power supply mode, the positive terminal of an external 24V or 48V power supply is connected to the MDR+ interface of the driver power supply port 410, and the negative terminal is connected to the GND interface. The power supply unit converts the input voltage into two stable power supplies, 12V and 5V, to power the driver circuit and logic control circuit respectively.

[0041] Example 3 Reference Figure 3 The diagram shows a dual power supply configuration. In this mode, the motor power supply is connected to the MDR+ interface, and the logic power supply is connected to the LOG+ interface. The negative terminals of both power supplies are connected to the GND interface. This configuration allows the motor power to be cut off via an emergency stop switch in an emergency, while maintaining power to the logic circuits to ensure continuous communication functionality.

[0042] Example 4 Reference Figure 4 and Figure 5 The overall structural schematic and exploded view shown demonstrate that the mechanical assembly of the driver adopts a modular design. The first heat sink 1 and the second heat sink 102 are reliably connected to the circuit board 4 via the heat sink and circuit board mounting holes 101, ensuring effective heat dissipation for the power devices. The light guide post 2 transmits the indicator light from the circuit board 4 to the surface of the housing 3, facilitating user observation of the device status. The housing 3 provides complete protection, and the driver housing film 301 identifies the functions of each interface for easy user identification and operation.

[0043] By implementing the above technical solution, this utility model achieves the following technical effects.

[0044] First, the NPN / PNP compatible design of the IO port enables the driver to adapt to different types of sensors and control signals, improving the system's versatility and compatibility.

[0045] Secondly, the design of the extended I / O port with power supply unit can directly power devices such as photoelectric sensors, simplifying system connection and reducing installation complexity.

[0046] Third, the independent logic power supply and motor power supply design can cut off the motor power supply while maintaining communication function in an emergency, improving the system's safety and maintainability.

[0047] Fourth, the dual-motor synchronous control function enables coordinated control of two electric rollers through a single driver, reducing the number of devices, lowering system costs, and improving control accuracy and synchronization performance.

[0048] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A dual-motor driver, characterized in that, include: Circuit board (4), wherein the circuit board (4) is provided with: The power supply unit is used to convert the input voltage to 12V and 5V. The main control unit uses the Renesas R7FA4M2A series microcontroller; The first drive unit and the second drive unit are respectively connected to the first motor port (402) and the second motor port (403) of the driver. The first detection unit and the second detection unit are used to detect the operating parameters of the corresponding motors, respectively. The communication unit is provided with a first driver communication port (408) and a second driver communication port (409), wherein the first driver communication port (408) and the second driver communication port (409) are connected in parallel using an RJ45 connector; The driver power supply port (410) consists of a pin 8EDGRC-3.5-03P and a plug 8EDGK-3.5-03P, and has a logic power positive terminal LOG+, a system reference ground GND, and a motor power positive terminal MDR+. Driver USB port (411); The first IO unit includes a first functional IO port (404) and a first extended IO port (406) of the driver, and the second IO unit includes a second functional IO port (405) and a second extended IO port (407) of the driver. Driver for OLED display (401); Driver first speed rotary encoder (412), driver first acceleration and deceleration time rotary encoder (413), driver second speed rotary encoder (414), driver second acceleration and deceleration time rotary encoder (415). Also includes: The housing (3) includes a driver housing shell (302) and a driver housing film (301). The first heat sink (1) and the second heat sink (102) are connected to the circuit board (4) through the heat sink and circuit board fixing mounting holes (101); Light guide post (2), the light guide post (2) includes a 9mm flat-head light guide post (201).

2. The dual-motor driver according to claim 1, characterized in that, The first functional IO port (404) and the second functional IO port (405) of the driver are composed of connector pins 8EDGRC-2.5-05P and plugs 8EDGK-2.5-05P, supporting PNP and NPN input / output modes.

3. The dual-motor driver according to claim 1, characterized in that, The first extended IO port (406) and the second extended IO port (407) of the driver are composed of connector pins ECON-B034 and plugs ECON-xx03-P / ECON-xx03-S. The extended IO port is equipped with a power supply unit and supports PNP and NPN input / output modes.

4. The dual-motor driver according to claim 1, characterized in that, The driver OLED display (401) is a 0.96-inch OLED display used to display the voltage, current, MOS temperature, operating speed, set speed, fault code, and acceleration / deceleration time of the first motor and the second motor.

5. The dual-motor driver according to claim 1, characterized in that, The first speed rotary encoder (412), the first acceleration / deceleration time rotary encoder (413), the second speed rotary encoder (414), and the second acceleration / deceleration time rotary encoder (415) of the driver are model SA-7050B.

6. The dual-motor driver according to claim 1, characterized in that, It also includes a first function DIP switch and a second function DIP switch, the model of which is EM-08KP.

7. The dual-motor driver according to claim 1, characterized in that, The first motor port (402) and the second motor port (403) of the driver are 9P 2.54mm pitch connectors, model CS-1001R-09K.

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