CN202231741U - Frequency converter communication system - Google Patents
Frequency converter communication system Download PDFInfo
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- CN202231741U CN202231741U CN2011203541345U CN201120354134U CN202231741U CN 202231741 U CN202231741 U CN 202231741U CN 2011203541345 U CN2011203541345 U CN 2011203541345U CN 201120354134 U CN201120354134 U CN 201120354134U CN 202231741 U CN202231741 U CN 202231741U
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- frequency converter
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- communication system
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Abstract
The utility model provides a frequency converter communication system, comprising a main station device. The main station device is connected with a communication protocol converter, and the communication protocol converter is connected with the RS 485 serial ports of the frequency converters used as sub-stations via shielding twisted pairs; wherein, the main station device comprises a central processing unit (CPU)connected with a serial port communication processing unit and a power supply module, and the serial port communication processing unit is connected with the communication protocol converter. Compared with the conventional communication card or I/O control mode, and under the premise of guaranteeing the device response speed and stability, the frequency converter communication system of the utility model employs a low cost RS485 serial port mode, enables the investment cost to be reduced substantially and the field complicated wiring tasks to be reduced, is suitable for a piler, a rail guided vehicle (RGV) and a conveyor system, and can be widely used in the relevant industries, such as logistics, storage, automation, etc.
Description
Technical field
The utility model relates to a kind of inverter communication system, realizes and the frequency converter serial communication through controller, solves the difficult point of the distributed control of logistic industry, realizes monitoring and controlled function in real time.
Background technology
Present inverter communication system mainly contains 2 kinds.A kind of is to be connected with PLC through Frequency Converter Control terminal digital quantity I/O mouth to realize control.The advantage of this communication system is: control method is simple, but its shortcoming is: early stage, the installation wiring workload was big, and failure rate is high.Another kind of then be to adopt the special-purpose Communication Card of frequency converter of each big PLC manufacturer to realize control.The advantage of this communication system is: control method is simple, but its shortcoming is: communications protocol is opaque, needs to buy special-purpose Communication Card, increases project cost.
Summary of the invention
The purpose of the utility model provides a kind of reduction cost of investment, improves the inverter communication system of equipment dependability and integrated degree.
In order to achieve the above object, the technical scheme of the utility model has provided a kind of inverter communication system, comprises main website equipment; Main website equipment connects a communications protocol transducer; The communications protocol transducer links to each other with each RS485 serial ports as the frequency converter of substation through Shielded Twisted Pair, and wherein, main website equipment comprises CPU element; CPU element connects serial communication processing unit and power module, and the serial communication processing unit links to each other with the communications protocol transducer.
Preferably, said CPU element connects an I/O signaling module and the 2nd I/O signaling module.
Preferably, on said RS485 serial ports, be connected with terminal resistance.
The utility model adopts RS485 serial mode cheaply; Compare with Traditional use address card or I/O control mode; Under the response speed and stability of the equipment of assurance, greatly reduced cost of investment, reduce on-the-spot complicated wiring task; Be applicable to piler, RGV and conveyer system, can be widely used in relevant industries such as logistic storage automation.
Description of drawings
A kind of inverter communication system schematic that Fig. 1 provides for the utility model.
Embodiment
For making the utility model more obviously understandable, now with a preferred embodiment, and conjunction with figs. elaborates as follows.
As shown in Figure 1; The disclosed a kind of inverter communication of present embodiment system comprises main website equipment; Main website equipment connects a communications protocol transducer 1, and communications protocol transducer 1 links to each other with each RS485 serial ports as the frequency converter 11 of substation through Shielded Twisted Pair 9, on the RS485 serial ports, is connected with terminal resistance 2; Wherein, Main website equipment comprises CPU element 4, and CPU element 4 connects serial communication processing unit 7, power module 3, an I/O signaling module 5 and the 2nd I/O signaling module 6, and serial communication processing unit 7 links to each other with communications protocol transducer 1.
In the present embodiment, frequency converter 11 adopts Siemens MM440 frequency converter, and BOP guidance panel 10 is arranged on the frequency converter 11; In order to let MM440 realize Communication Control; Through BOP guidance panel 10, can carry out the parameter setting, detailed step can be with reference to the operation manual of Siemens MM440 frequency converter.
During work, by main website equipment a frequency converter 11 is sent packet, this frequency converter 11 can carry out the calculating of BCC sign indicating number effect to it after receiving packet, if the BCC sign indicating number is incorrect, will can not respond, also can be to its feedback message or reporting errors; If BCC effect sign indicating number is correct, will respond and move, will feed back current states through after the of short duration time-delay.Simultaneously other frequency converters 11 also can passive reception packet, but can not respond to it, also can not feed back to main website equipment.After main website equipment receives the slave station packet, can change its packet content, ready for send next time.When sending at every turn and finishing receiving, corresponding monitoring is arranged all, if find communication failure, the measure that will in time reset guarantees that communication can not stop up.Communication time to every single inverter 11 all can carry out overtime monitoring, guarantees that all frequency converter 11 time slots are normal.Through after the of short duration time-delay, pressing said process will be successively to other frequency converter 11 transmissions and acceptance.After the communication of accomplishing last frequency converter 11, promptly represent end of polling(EOP) of this system.
Claims (3)
1. inverter communication system; Comprise main website equipment, main website equipment connects a communications protocol transducer (1), and communications protocol transducer (1) links to each other with the RS485 serial ports of each frequency converter as the substation (11) through Shielded Twisted Pair (9); Wherein, Main website equipment comprises CPU element (4), and CPU element (4) connects serial communication processing unit (7) and power module (3), and serial communication processing unit (7) links to each other with communications protocol transducer (1).
2. a kind of inverter communication as claimed in claim 1 system, it is characterized in that: said CPU element (4) connects an I/O signaling module (5) and the 2nd I/O signaling module (6).
3. a kind of inverter communication as claimed in claim 1 system is characterized in that: on said RS485 serial ports, be connected with terminal resistance (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203541345U CN202231741U (en) | 2011-09-21 | 2011-09-21 | Frequency converter communication system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203541345U CN202231741U (en) | 2011-09-21 | 2011-09-21 | Frequency converter communication system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202231741U true CN202231741U (en) | 2012-05-23 |
Family
ID=46082313
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203541345U Expired - Lifetime CN202231741U (en) | 2011-09-21 | 2011-09-21 | Frequency converter communication system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202231741U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103513586A (en) * | 2012-06-29 | 2014-01-15 | 中国科学院大连化学物理研究所 | Frequency converter remote control method based on serial instruction sequence |
| US10908596B2 (en) | 2017-06-21 | 2021-02-02 | EWAB Engineering AB | Conveyor system method of operating a conveyor system and flow devices for use in such conveyor system |
-
2011
- 2011-09-21 CN CN2011203541345U patent/CN202231741U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103513586A (en) * | 2012-06-29 | 2014-01-15 | 中国科学院大连化学物理研究所 | Frequency converter remote control method based on serial instruction sequence |
| US10908596B2 (en) | 2017-06-21 | 2021-02-02 | EWAB Engineering AB | Conveyor system method of operating a conveyor system and flow devices for use in such conveyor system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120523 |
|
| CX01 | Expiry of patent term |