CN208904878U - A kind of anti-voltage wave device for low voltage frequency converter - Google Patents
A kind of anti-voltage wave device for low voltage frequency converter Download PDFInfo
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- CN208904878U CN208904878U CN201821641452.8U CN201821641452U CN208904878U CN 208904878 U CN208904878 U CN 208904878U CN 201821641452 U CN201821641452 U CN 201821641452U CN 208904878 U CN208904878 U CN 208904878U
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- China
- Prior art keywords
- frequency converter
- low voltage
- voltage frequency
- programmable controller
- voltage
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Abstract
The utility model relates to a kind of anti-voltage wave devices for low voltage frequency converter, it is characterized by comprising PLC programmable controllers, 24V Switching Power Supply and voltage transmitter, the digital-quantity input terminal DIa of the PLC programmable controller and the operation contact of the low voltage frequency converter, failure contact, rise/stop relay tip to be electrically connected, the analog input terminal AI of the PLC programmable controller is connected with voltage transmitter output terminal, the digital output terminal DQa of the PLC programmable controller and low voltage frequency converter rise/stop control terminal, the electrical connection of failure reset terminal, the input terminal of the voltage transmitter is connect with busbar voltage.The utility model, which has, shakes electricity identification, and automatically reset low voltage frequency converter failure when shaking electricity, realizes restarting for low voltage frequency converter.
Description
Technical field
The utility model relates to a kind of anti-voltage wave device, especially a kind of anti-voltage fluctuation for low voltage frequency converter
Device.
Background technique
Low voltage frequency converter is with its excellent speed adjusting performance and significant energy-saving effect, using very in modern industrial enterprises
Extensively.But low voltage frequency converter is more sensitive to voltage ripple of power network, power supply system in operation, have a large amount of impacts
Load and intermittent load, the generation of the various short troubles of power supply system all easily causes network voltage wave in short-term occur in addition
Dynamic, this voltage fluctuation is very big on low voltage frequency converter influence, will lead to low voltage frequency converter and stops working, even if system voltage is quickly
Restore normal, but low voltage frequency converter need manual reset after could complete start-up course again, seriously affect device and normally produce,
Especially for the enterprise of consecutive production, very huge economic loss and secondary safety accident can be also caused to enterprise.
Summary of the invention
Purpose of the utility model is to solve the above problems and provide a kind of anti-voltage wave devices, when network voltage is sent out
When raw short-time fluctuations, it can realize and restart automatically after frequency converter stop jumping, not influence device and normally produce.
The technical solution of the utility model is: a kind of anti-voltage wave device for low voltage frequency converter, including PLC can be compiled
Range controller, 24V Switching Power Supply and voltage transmitter, the digital-quantity input terminal DIa of the PLC programmable controller and described
The operation contact of low voltage frequency converter, failure contact rise/stop relay tip and are electrically connected, the PLC programmable controller
Analog input terminal AI is connected with voltage transmitter output terminal, the digital output terminal of the PLC programmable controller
DQa and low voltage frequency converter rise/stop control terminal, the electrical connection of failure reset terminal.
The utility model has the beneficial effects that by PLC programmable controller according to the operation contact of the low voltage frequency converter,
Failure contact, rise/stop relay tip electric signal can accurate judgement whether occur shake electricity, voltage occur fluctuation be not belonging to
When the faults itself of low voltage frequency converter, digital output terminal exports electric signal, so that low voltage frequency converter carries out failure reset, and
Low voltage frequency converter is started into junction closure, is again started up low voltage frequency converter.
Detailed description of the invention
Fig. 1 is the structure chart of the utility model；
In figure, 1 is PLC programmable controller, and 2 be 24V Switching Power Supply, and 3 be voltage transmitter；
Wiring: DIa0 connects the operation contact of low voltage frequency converter, and DIa1 connects the failure contact of low voltage frequency converter, and DIa2 connects low pressure
Frequency converter rise/stops relay tip；DQa0 connects the control terminal that rise/stops of low voltage frequency converter, and DQa1 connects the event of low voltage frequency converter
Hinder reseting terminal.
Specific embodiment
The utility model is described in further detail below in conjunction with the drawings and specific embodiments.
It is shown in Figure 1, the anti-voltage wave device of the utility model, including PLC programmable controller, 24V Switching Power Supply
And voltage transmitter, the operation of the digital-quantity input terminal DIa and the low voltage frequency converter of the PLC programmable controller connect
Point, failure contact rise/stop relay tip and are electrically connected, the analog input terminal AI of the PLC programmable controller and
The connection of voltage transmitter output terminal, the digital output terminal DQa of the PLC programmable controller and low voltage frequency converter
Rise/stop control terminal, the electrical connection of failure reset terminal, the input terminal of the voltage transmitter is connect with busbar voltage.
The utility model PLC programmable controller is Siemens S7-1200.
The utility model is according to operation contact, the failure contact, the telecommunications for rise/stopping relay tip of the low voltage frequency converter
Number to determine whether occur shake electricity, voltage occur fluctuation be not belonging to the faults itself of low voltage frequency converter when, digital output end
Son output electric signal, so that low voltage frequency converter carries out failure reset, and starts junction closure for low voltage frequency converter, makes low-voltage variable frequency
Device is again started up.
Above-described is only preferred embodiments of the present invention, it is noted that for the ordinary skill of this field
For personnel, under the premise of not departing from the utility model structure, various modifications and improvements can be made, these belong to this
The protection scope of utility model.
Claims (2)
1. a kind of anti-voltage wave device for low voltage frequency converter, it is characterised in that: opened including PLC programmable controller, 24V
Powered-down source and voltage transmitter, the digital-quantity input terminal DIa of the PLC programmable controller and the fortune of the low voltage frequency converter
Row contact, failure contact rise/stop relay tip and are electrically connected, the analog input terminal of the PLC programmable controller
AI is connected with voltage transmitter output terminal, the digital output terminal DQa and low voltage frequency converter of the PLC programmable controller
Rise/stop control terminal, the electrical connection of failure reset terminal, the input terminal of the voltage transmitter connect with busbar voltage.
2. the anti-voltage wave device according to claim 1 for low voltage frequency converter, it is characterised in that: the PLC can
Programmable controller is Siemens S7-1200.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821641452.8U CN208904878U (en) | 2018-10-10 | 2018-10-10 | A kind of anti-voltage wave device for low voltage frequency converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821641452.8U CN208904878U (en) | 2018-10-10 | 2018-10-10 | A kind of anti-voltage wave device for low voltage frequency converter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208904878U true CN208904878U (en) | 2019-05-24 |
Family
ID=66575301
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821641452.8U Active CN208904878U (en) | 2018-10-10 | 2018-10-10 | A kind of anti-voltage wave device for low voltage frequency converter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208904878U (en) |
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2018
- 2018-10-10 CN CN201821641452.8U patent/CN208904878U/en active Active
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