CN-224205008-U - Frequency converter control system

Abstract

The utility model discloses a control system of a frequency converter, and aims to solve the problems of complex structure and low working efficiency of the existing frequency converter. The system comprises a frequency converter main circuit module, a switching power supply module, a PLC module, a display screen module and a temperature control module. The main circuit module is composed of a transformer and a frequency converter, wherein the transformer is connected with external alternating current and a switching power supply module to provide power for the system. The switch power supply module supplies power to the PLC module, the display screen module and the temperature control module, and stable operation of the modules is ensured. The PLC module is used as a core control unit and is connected with the frequency converter group, the display screen module and the temperature control module, so that accurate control of the motor and real-time monitoring of the system state are realized. The display screen module is used for displaying operation parameters, and the temperature control module is responsible for monitoring and adjusting the temperature of equipment.

Inventors

• DENG LIMING
• Lai Changhui

Assignees

• 中山市启锐机电有限公司

Dates

Publication Date

20260505

Application Date

20250707

Claims (10)

1. 1. The frequency converter control system is characterized by comprising a frequency converter main circuit module, a switching power supply module, a PLC module, a display screen module and a temperature control module, wherein the frequency converter main circuit module comprises a transformer and a frequency converter group, the transformer is respectively connected with external alternating current and the switching power supply module, the switching power supply module is respectively connected with the PLC module, the display screen module and the temperature control module, the PLC module is respectively connected with the frequency converter group, the display screen module and the temperature control module, and the frequency converter group is respectively connected with the external alternating current and the external motor group.
2. 2. The inverter control system of claim 1 further comprising a circuit breaker C100, the circuit breaker C100 having an input connected to the external ac power and an output connected to the input of the transformer and the inverter group.
3. 3. The inverter control system of claim 2, wherein the inverter group comprises a main inverter and an auxiliary inverter connected in parallel.
4. 4. A frequency converter control system according to claim 3, wherein the model of the main frequency converter is MD500T37G, the three-phase power input terminal of the main frequency converter is connected to the circuit breaker C100, the three-phase motor output terminal is connected to the motor in the external electrode group, and the control terminal is connected to the PLC module.
5. 5. The inverter control system of claim 4, wherein the auxiliary inverter is MD310T3.7B, a three-phase power input terminal of the auxiliary inverter is connected to the circuit breaker C100, a three-phase motor output terminal is connected to a motor in the external electrode group, and a control terminal is connected to the PLC module.
6. 6. The inverter control system of claim 5, wherein the PLC module is a PLC analog expansion module, and the model of the PLC analog expansion module is GL10-4DA.
7. 7. The frequency converter control system according to claim 6, wherein the switching power supply module comprises a circuit breaker C10 and a switching power supply S, the input end of the circuit breaker C10 is connected with the transformer, the output end of the circuit breaker C10 is connected with the PLC module, the input end of the switching power supply S is connected with the output end of the circuit breaker, and the output ends of the switching power supply S are respectively connected with the PLC module, the display screen module and the temperature control module.
8. 8. The inverter control system of claim 7 wherein the display screen module is a touch display screen module, the touch display screen module being of the type IT7100E.
9. 9. The frequency converter control system of claim 8, wherein the temperature control module is a WK8H temperature control module, an input end of the WK8H temperature control module is connected to an external thermocouple, an output end of the WK8H temperature control module is connected to an external heating module and an external heat dissipation module, and a communication end of the WK8H temperature control module is connected to the PLC module.
10. 10. The inverter control system of claim 5, further comprising a PLC extension module, the PLC extension module being of model H3U-1616MT-XP, the PLC extension module being coupled to the PLC module.

Description

Frequency converter control system Technical Field The utility model relates to the technical field of frequency converters, in particular to a frequency converter control system. Background With the continuous development of industrial automation and electric transmission technology, frequency converters are increasingly used in various devices. The frequency converter is mainly used for controlling the rotating speed and the power of the motor, and the running state of the motor is accurately regulated by changing the frequency of an input power supply, so that the motor driving diversified requirements of different industrial scenes are met. However, the existing frequency converter has a complex structure and is generally composed of a plurality of independent components, such as a main circuit, a control circuit, a power module, and the like, and the connection and the cooperation between the components require complex wiring and debugging processes. This complex structure not only increases the volume and cost of the device, but also reduces the reliability and stability of the system. Disclosure of utility model The utility model provides a frequency converter control system, which aims to solve the problem that the existing frequency converter control system is complex in structure. The specific technical scheme of the utility model is as follows: The frequency converter control system comprises a frequency converter main circuit module, a switching power supply module, a PLC module, a display screen module and a temperature control module, wherein the frequency converter main circuit module comprises a transformer and a frequency converter group, the transformer is respectively connected with external alternating current and the switching power supply module, the switching power supply module is respectively connected with the PLC module, the display screen module and the temperature control module, the PLC module is respectively connected with the frequency converter group, the display screen module and the temperature control module, and the frequency converter group is respectively connected with the external alternating current and the external motor group. Further, the frequency converter control system further comprises a circuit breaker C100, wherein the input end of the circuit breaker C100 is connected with external alternating current, and the output end of the circuit breaker C100 is connected with the input end of the transformer and the frequency converter group. Further, the frequency converter group comprises a main machine frequency converter and an auxiliary machine frequency converter which are connected in parallel. Further, the model of the host frequency converter is MD500T37G, a three-phase power input terminal of the host frequency converter is connected with the circuit breaker C100, a three-phase motor output terminal is connected with a motor in the external electrode group, and a control terminal is connected with the PLC module. Further, the model of auxiliary machine converter is MD310T3.7B, the three-phase power input terminal of auxiliary machine converter links to each other with circuit breaker C100, and three-phase motor output terminal links to each other with the motor in the external electrode group, and control terminal links to each other with the PLC module. Further, the PLC module is a PLC analog quantity expansion module, and the model of the PLC analog quantity expansion module is GL10-4DA. Further, the switching power supply module comprises a breaker C10 and a switching power supply S, wherein the input end of the breaker C10 is connected with the transformer, the output end of the breaker C is connected with the PLC module, the input end of the switching power supply S is connected with the output end of the breaker, and the output end of the switching power supply S is respectively connected with the PLC module, the display screen module and the temperature control module. Further, the display screen module is a touch display screen module, and the model of the touch display screen module is IT7100E. Further, the temperature control module is a WK8H temperature control module, the input end of the WK8H temperature control module is connected with an external thermocouple, the output end of the WK8H temperature control module is connected with an external heating module and an external heat dissipation module, and the communication end of the WK8H temperature control module is connected with the PLC module. Further, the frequency converter control system further comprises a PLC expansion module, the model of the PLC expansion module is H3U-1616MT-XP, and the PLC expansion module is connected with the PLC module. Compared with the prior art, the utility model has the beneficial effects that the independence among all the components is reduced and complex wiring and complicated debugging processes are avoided by organically integrating the frequency conve