CN204270157U - Without the closed-loop control system of PLC - Google Patents
Without the closed-loop control system of PLC Download PDFInfo
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- CN204270157U CN204270157U CN201420648216.4U CN201420648216U CN204270157U CN 204270157 U CN204270157 U CN 204270157U CN 201420648216 U CN201420648216 U CN 201420648216U CN 204270157 U CN204270157 U CN 204270157U
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- control system
- loop control
- frequency converter
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Abstract
Without a closed-loop control system of PLC, this closed-loop control system without PLC is made up of touch-screen and at least two group volume control devices that are connected with touch-screen; Volume control device comprises frequency converter, controls motor and flowmeter; Frequency converter is by controlling motor incoming stream gauge; Flowmeter access frequency converter.The utility model provides a kind of control efficiency closed-loop control system without PLC high and with low cost.
Description
Technical field
The utility model belongs to electric field, relates to a kind of closed-loop control system, particularly relates to a kind of closed-loop control system without PLC.
Background technology
Traditional industrial control system adopts frequency converter, flowmeter, PLC and touch-screen to form closed-loop control system.Frequency converter is used for that controlled frequency, flowmeter are used for measuring, PLC is used for gathering and controlling, and touch-screen is used for setting and display, himself be convenient to control and the feature of convenient adjustment by Long-Time Service.But this control system has inefficiency, cost high (containing PLC) and controls the defects such as length of corresponding time.
Utility model content
In order to solve the above-mentioned technical matters existed in background technology, the utility model provides a kind of control efficiency closed-loop control system without PLC high and with low cost.
Technical solution of the present utility model is: the utility model provides a kind of closed-loop control system without PLC, and its special character is: the described closed-loop control system without PLC is made up of touch-screen and at least two group volume control devices that are connected with touch-screen; Described volume control device comprises frequency converter, controls motor and flowmeter; Described frequency converter is by controlling motor incoming stream gauge; Described flowmeter access frequency converter.
Above-mentioned touch-screen is connected with at least two group volume control devices respectively by RS485 bus.
The utility model has the advantages that:
The utility model provides a kind of closed-loop control system without PLC, and this closed-loop control system without PLC is made up of touch-screen and at least two group volume control devices that are connected with touch-screen; The utility model all realizes Control loop and does not need to pass through PLC by the PID of self according to frequency converter in actual condition, touch-screen is used for setting and showing, by serial port, data are sent to frequency converter, just can realize the complete complete closed-loop control system with setting, display; Owing to not re-using PLC, therefore, utility model with low cost, efficiency is high, controls the corresponding time short.
Accompanying drawing explanation
Fig. 1 is the structural representation of the closed-loop control system without PLC provided by the utility model;
Wherein:
1-touch-screen; 2-frequency converter; 3-controls motor; 4-flowmeter; 5-volume control device.
Embodiment
See Fig. 1, the utility model provides a kind of closed-loop control system without PLC, and this closed-loop control system without PLC is made up of touch-screen 1 and at least two group volume control devices 5 that are connected with touch-screen 1; Volume control device 5 comprises frequency converter 2, controls motor 3 and flowmeter 4; Frequency converter 2 is by controlling motor 3 incoming stream gauge 4; Flowmeter 4 accesses frequency converter 2; Touch-screen 1 is connected with at least two group volume control devices 5 respectively by RS485 bus.
Closed-loop control system without PLC provided by the utility model is made up of touch-screen 1 and at least two group volume control devices 5 that are connected with touch-screen 1; The utility model all realizes Control loop and does not need to pass through PLC by the PID of self according to frequency converter in actual condition 2, touch-screen 1 is used for setting and showing, by serial port, data are sent to frequency converter 2, just can realize the complete complete closed-loop control system with setting, display; Owing to not re-using PLC, therefore, utility model with low cost, efficiency is high, controls the corresponding time short.
Claims (2)
1. without a closed-loop control system of PLC, it is characterized in that: the described closed-loop control system without PLC is made up of touch-screen and at least two group volume control devices that are connected with touch-screen; Described volume control device comprises frequency converter, controls motor and flowmeter; Described frequency converter is by controlling motor incoming stream gauge; Described flowmeter access frequency converter.
2. the closed-loop control system without PLC according to claim 1, is characterized in that: described touch-screen is connected with at least two group volume control devices respectively by RS485 bus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420648216.4U CN204270157U (en) | 2014-10-31 | 2014-10-31 | Without the closed-loop control system of PLC |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420648216.4U CN204270157U (en) | 2014-10-31 | 2014-10-31 | Without the closed-loop control system of PLC |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204270157U true CN204270157U (en) | 2015-04-15 |
Family
ID=52805013
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420648216.4U Active CN204270157U (en) | 2014-10-31 | 2014-10-31 | Without the closed-loop control system of PLC |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204270157U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104881052A (en) * | 2015-06-23 | 2015-09-02 | 佛山市飞凌皮革化工有限公司 | Flow intermittence closed-loop control method and special device for solvent-free synthetic leather feeding machine |
-
2014
- 2014-10-31 CN CN201420648216.4U patent/CN204270157U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104881052A (en) * | 2015-06-23 | 2015-09-02 | 佛山市飞凌皮革化工有限公司 | Flow intermittence closed-loop control method and special device for solvent-free synthetic leather feeding machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |