A multi-machine control panel for digital arc power supply

Abstract

The utility model relates to the technical field of coating power supply, in particular to a multi-machine control panel of a digital arc power supply, comprising: a host unit and a host 485 communication unit, and a voltage and current display unit; the host 485 communication unit is connected and communicates with a plurality of slave 485 communication units; wherein the host 485 communication unit comprises a host 485 communication chip and a 485 communication interface connected, the communication interface has three pins, the first and second pins are connected to the host 485 communication chip, and the third pin is directly grounded; the multi-machine control panel of the digital arc power supply can connect seven slave units and perform 485 communication exchange data therewith, and only one 485 bus is needed to realize it, and the output of the slave unit is controlled and the size of the output current is adjusted by key operation, and the current and voltage of multiple slaves are displayed in real time, and the multi-machine control panel has the characteristics of simple wiring and real-time and accurate results.

Description

Technical Field

[0001] The utility model relates to the technical field of film coating power supplies, in particular to a multi-machine control panel of a digital arc power supply. Background Art

[0002] Welding power supply is a device used to provide the electrical energy required for the welding process. During the welding process, it is necessary to generate heat through electric current to melt the welding material and form a weld after cooling. The main function of the welding power supply is to provide appropriate current and voltage to meet the requirements of different welding processes and materials.

[0003] The multi-machine control panel of the digital arc power supply needs to connect the host and multiple slaves. The existing connection has certain limitations. The connection between the host 485 communication unit and the slaves is relatively complicated and the adjustment is troublesome. At the same time, if one or more slaves fail and have no output, it is easy to affect each other.

[0004] Therefore, a multi-machine control panel of a digital arc power supply is proposed to solve the above problems. Utility Model Content

[0005] The purpose of the utility model is to provide a multi-machine control panel of a digital arc power supply in order to solve the above-mentioned problem, which improves the problem that the connection between the host 485 communication unit and the slaves is relatively complicated and the adjustment is relatively troublesome. At the same time, if one or more slaves fail and have no output, it is easy to cause mutual influence.

[0006] The utility model achieves the above-mentioned purpose through the following technical solutions, a multi-machine control panel of a digital arc power supply, comprising:

[0007] Host unit and host 485 communication unit, display voltage and current unit;

[0008] The host 485 communication unit is connected and communicates with multiple slave 485 communication units;

[0009] The host 485 communication unit includes a host 485 communication chip and a 485 communication interface, the communication interface has three pins, the first and second pins are connected to the host 485 communication chip, and the third pin is directly grounded.

[0010] Preferably, the slave 485 communication unit includes a slave 485 communication chip and a 485 communication interface, the communication interface has three pins, the first and second pins are connected to the slave 485 communication chip, and the third pin is grounded.

[0011] Preferably, the communication interface of the host 485 communication unit is connected one-to-one with the communication interface of the slave 485 communication unit, wherein the first and second pins of the host interface are connected to the first and second pins of the slave communication interface through a 485 communication bus, and the third pin is grounded.

[0012] The beneficial effects of the utility model are:

[0013] 1. The multi-machine control panel of the digital arc power supply can connect seven slave units and exchange data through 485 communication. Only one 485 bus is needed, and the wiring is simple;

[0014] 2. The seven slave unit display windows on the multi-machine control panel display current and voltage respectively. There are four buttons on each slave display window, namely start, stop, increase and decrease, which can adjust the current. Each slave display window displays the current and voltage information of the corresponding ID, which can realize remote monitoring and detection of long-distance current and voltage. Whether it is started or stopped, the current of the slave unit can be adjusted in real time by pressing buttons. Each slave unit can be started and stopped separately, or all seven slave units can be started or stopped by all start switches. After all are started, each slave can also be operated by the buttons of each slave. You only need to restart the multi-machine panel. If the communication is successful, you can join. If there are more than seven units, you need another panel or more panels plus the corresponding 485 bus to achieve it. The output of the slave unit can be controlled and the output current can be adjusted by key operation. Real-time current and voltage display of multiple slaves is simple in wiring and the results are real-time and accurate. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the structure of a multi-machine control panel of the utility model;

[0016] Figure 2 This is a circuit diagram of the host unit of the utility model;

[0017] Figure 3 This is a circuit diagram of the host display unit of the utility model. DETAILED DESCRIPTION

[0018] 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 in 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.

[0019] When implementing: Figure 1-3As shown, a multi-machine control panel of a digital arc power supply comprises:

[0020] Host unit and host 485 communication unit, display voltage and current unit;

[0021] The host 485 communication unit is connected and communicates with multiple slave 485 communication units;

[0022] The host 485 communication unit includes a host 485 communication chip and a 485 communication interface. The communication interface has three pins. The first and second pins are connected to the host 485 communication chip, and the third pin is directly grounded.

[0023] The slave 485 communication unit includes a slave 485 communication chip and a 485 communication interface. The communication interface has three pins. The first and second pins are connected to the slave 485 communication chip, and the third pin is grounded.

[0024] The communication interfaces of the host 485 communication unit and the slave 485 communication unit are connected one-to-one, wherein the first and second pins of the host interface are connected to the first and second pins of the slave communication interface through a 485 communication bus, and the third pin is grounded.

[0025] Working principle: The multi-machine control panel of the digital arc power supply can connect seven slave units and exchange data through 485 communication. Only one 485 bus is needed. After completing the preliminary connection, there are seven slave unit display windows on the multi-machine control panel, which display the current and voltage respectively. There are four buttons on each slave display window, which are start, stop, increase and decrease, and the current can be adjusted. Each slave display window displays the current and voltage information of the corresponding ID, which can realize the remote monitoring and detection of long-distance current and voltage. Regardless of the start or stop state, the current of the slave unit can be adjusted in real time through the button. Each slave unit can be started and stopped separately, or all seven slave units can be controlled to start or stop through the start switch. After all are started, each slave can also be operated through the buttons of each slave;

[0026] The host can collect the current, voltage, alarm and other information of the seven slaves through polling, and then send them to the slave units for display. After the multi-machine panel is powered on, it will communicate with the seven slaves. If some slaves do not respond, ignore this ID and proceed to the next one. After the last seven slaves have completed the communication, store the ID of the slave that can communicate and communicate with it. If you want to add less than seven slaves, you only need to restart the multi-machine panel. If the communication is successful, you can add them. If it is more than seven, you need another panel or more panels with the corresponding 485 bus to achieve it.

[0027] It should be noted that each slave has a corresponding display unit. If a fault occurs, such as a temperature alarm or an overcurrent alarm, the machine will shut down and the display will be displayed. If a temperature alarm occurs, it can be restarted when the temperature returns to normal. If a communication failure occurs, first check whether the communication cable is disconnected. If disconnected, you only need to reconnect the slave to achieve communication. If not, it will not affect the communication between the host and other slaves.

[0028] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A multi-machine control panel of a digital arc power supply, characterized in that: include: Host unit and host 485 communication unit, display voltage and current unit; The host 485 communication unit is connected and communicates with multiple slave 485 communication units; The host 485 communication unit includes a host 485 communication chip and a 485 communication interface, the communication interface has three pins, the first and second pins are connected to the host 485 communication chip, and the third pin is directly grounded.

2. The multi-machine control panel of the digital arc power supply according to claim 1, characterized in that: The slave 485 communication unit includes a slave 485 communication chip and a 485 communication interface. The communication interface has three pins, the first and second pins are connected to the slave 485 communication chip, and the third pin is grounded.

3. The multi-machine control panel of the digital arc power supply according to claim 2, characterized in that: The communication interfaces of the host 485 communication unit and the slave 485 communication unit are connected one-to-one, wherein the first and second pins of the host interface are connected to the first and second pins of the slave communication interface through a 485 communication bus, and the third pin is grounded.

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