CN115021390A - Two-way power supply automatic switching PLC system - Google Patents
Two-way power supply automatic switching PLC system Download PDFInfo
- Publication number
- CN115021390A CN115021390A CN202210754552.6A CN202210754552A CN115021390A CN 115021390 A CN115021390 A CN 115021390A CN 202210754552 A CN202210754552 A CN 202210754552A CN 115021390 A CN115021390 A CN 115021390A
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- Prior art keywords
- power supply
- power
- input end
- switching device
- plc
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
- H02J9/062—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems for AC powered loads
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/20—End-user application control systems
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- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Stand-By Power Supply Arrangements (AREA)
Abstract
The invention discloses a PLC system for automatically switching two paths of power supplies, which relates to the technical field of PLC control systems and comprises a power supply switching device, a power supply switching device and a control device, wherein the power supply switching device comprises a first input end, a second input end and an output end, the first input end is connected with a mains supply, and the second input end is connected with a UPS; and the PLC is connected with the output end and is supplied with power by the output end. The power switching device is powered by mains supply and the UPS at the same time, under normal conditions, the mains supply is preferentially adopted by the power switching device to supply power for the PLC, and when the mains supply fails, the power switching device automatically switches to the UPS to supply power for the PLC, so that the controller in the PLC system is ensured to work normally, and the power switching device has high reliability.
Description
Technical Field
The invention relates to the technical field of PLC control systems, in particular to a PLC system capable of automatically switching two paths of power supplies.
Background
At present, a PLC control system of a heating furnace of a bar mill is only connected with commercial power and has no emergency power supply. When the mains supply fails, the heating furnace is in an abnormal state and cannot normally operate, and the production efficiency is seriously influenced.
Disclosure of Invention
The invention aims to solve the technical problem of overcoming the defects of the prior art and provides a PLC system for automatically switching two paths of power supplies.
In order to solve the technical problems, the technical scheme of the invention is as follows:
a PLC system with two-way power supply automatic switching comprises,
the power supply switching device comprises a first input end, a second input end and an output end, wherein the first input end is connected with a mains supply, and the second input end is connected with the UPS;
and the PLC is connected with the output end and is supplied with power by the output end.
As an optimal scheme of the two-path power supply automatic switching PLC system of the present invention, wherein: and a first circuit breaker used for controlling the on-off of the power supply loop is arranged between the first input end and the commercial power.
As an optimal scheme of the two-path power supply automatic switching PLC system of the present invention, wherein: and a second circuit breaker used for controlling the on-off of the power supply loop is arranged between the second input end and the UPS.
As an optimal scheme of the two-path power supply automatic switching PLC system of the present invention, wherein: and a third circuit breaker used for controlling the on-off of the power supply loop is arranged between the output end and the controller.
As a preferred scheme of the two-way power supply automatic switching PLC system of the present invention, wherein: the output voltage of the output end is 24V.
As a preferred scheme of the two-way power supply automatic switching PLC system of the present invention, wherein: the input voltage of the first input end and the second input end is 220V.
The invention has the beneficial effects that:
the power supply switching device supplies power to the power supply switching device through the commercial power and the UPS at the same time, the power supply switching device preferentially adopts the commercial power to supply power to the PLC controller under the normal condition, and when the commercial power fails, the power supply switching device automatically switches to adopt the UPS to supply power to the PLC controller, so that the controller in the PLC system is ensured to work normally, and the power supply switching device has high reliability.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.
Fig. 1 is a schematic diagram of a two-way power supply automatic switching PLC system provided in the present invention.
Detailed Description
In order that the present invention may be more readily and clearly understood, a more particular description of the invention briefly described above will be rendered by reference to specific embodiments that are illustrated in the appended drawings.
Fig. 1 is a schematic diagram of a two-way power supply automatic switching PLC system according to an embodiment of the present application. The system comprises a power supply switching device and a PLC controller.
Specifically, the power switching device is provided with two input ends and an output end. The two input ends are respectively a first input end and a second input end. Wherein the first input end is connected with the output end of the commercial power. The second input end is connected with the output end of the UPS. The output end of the power supply switching device is connected with the PLC and supplies power to the PLC.
Preferably, a first circuit breaker 1QF1 is installed in the power supply circuit between the utility power and the first input end. A second circuit breaker 1QF2 is installed in the supply circuit between the UPS and the second input. The on-off of the power supply loop of the two input ends of the power supply switching device can be controlled by controlling the first circuit breaker 1QF1 and the second circuit breaker 1QF 2.
And a third circuit breaker 2QF1 is also arranged in a power supply loop between the output end of the power supply switching device and the PLC controller. The third breaker 2QF1 can be controlled to switch on or off the power supply loop of the PLC controller.
Under normal conditions, the first circuit breaker 1QF1 and the second circuit breaker 1QF2 are both in a closed state, and at the moment, the power supply switching device preferentially adopts commercial power to supply power for the PLC controller. When the mains supply fails, the power supply switching device automatically switches to adopt the UPS to supply power for the PLC. Therefore, the controller in the PLC system can work normally, and high reliability is achieved.
It should be noted that, the input voltages of the first input terminal and the second input terminal in the power switching device are both 220V. The output voltage of the output end of the power supply switching device is 24V, and power is supplied to electrical equipment such as a PLC (programmable logic controller).
In addition to the above embodiments, the present invention may have other embodiments; all technical solutions formed by adopting equivalent substitutions or equivalent transformations fall within the protection scope of the claims of the present invention.
Claims (6)
1. The utility model provides a PLC system of two way power supply automatic switch-over which characterized in that: comprises the steps of (a) preparing a mixture of a plurality of raw materials,
the power supply switching device comprises a first input end, a second input end and an output end, wherein the first input end is connected with a mains supply, and the second input end is connected with the UPS;
and the PLC is connected with the output end and is supplied with power by the output end.
2. The two-way power supply automatic switching PLC system according to claim 1, characterized in that: and a first circuit breaker used for controlling the on-off of the power supply loop is arranged between the first input end and the commercial power.
3. The two-way power supply automatic switching PLC system according to claim 1, characterized in that: and a second circuit breaker used for controlling the on-off of the power supply loop is arranged between the second input end and the UPS.
4. The two-way power supply automatic switching PLC system according to claim 1, characterized in that: and a third circuit breaker used for controlling the on-off of the power supply loop is arranged between the output end and the controller.
5. The two-way power supply automatic switching PLC system according to claim 1, characterized in that: the output voltage of the output end is 24V.
6. The two-way power supply automatic switching PLC system according to claim 1, characterized in that: the input voltage of the first input end and the second input end is 220V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210754552.6A CN115021390A (en) | 2022-06-30 | 2022-06-30 | Two-way power supply automatic switching PLC system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210754552.6A CN115021390A (en) | 2022-06-30 | 2022-06-30 | Two-way power supply automatic switching PLC system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115021390A true CN115021390A (en) | 2022-09-06 |
Family
ID=83079181
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210754552.6A Pending CN115021390A (en) | 2022-06-30 | 2022-06-30 | Two-way power supply automatic switching PLC system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115021390A (en) |
-
2022
- 2022-06-30 CN CN202210754552.6A patent/CN115021390A/en active Pending
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