Power supply device of PLC system

Abstract

The invention discloses a power supply device of a PLC system, which is characterized by comprising a first power supply, a second power supply, an UPS and a power supply distributor; the first powersupply and the second power supply are from different transformers; wherein the first power supply is the power supply of the UPS and the UPS by-pass, and the output of the UPS is connected to the branch A of the power supply distributor; the second power supply is connected with the branch B of the power supply distributor; the output of the power supply distributor is connected to the whole input line of the power supply of the PLC control cabinet. The device can greatly reduce the power failure of the PLC system caused by power loss or UPS power failure, can quickly isolate faults, repair the fault equipment under the condition of uninterrupted power supply of the PLC system, can improve the stable supply of the energy medium and ensure the continuity of production.

Description

technical field [0001] The invention relates to a power supply device, in particular to a device for providing reliable power supply to an automation system of a production device. Background technique [0002] PLC systems are widely used in production lines in various industrial fields, and the usual power supply method uses UPS to power PLC systems. In the case of mains power failure, grid fluctuations, etc., it can ensure the continuous operation of the PLC system. [0003] With the improvement of the degree of automation of the production line, higher requirements are put forward for the continuous work of the PLC system. Looking back at the many equipment accidents caused by PLC system power outages, the above-mentioned power supply mode of the PLC system cannot guarantee the continuous operation of the PLC system when one power supply fails or the UPS fails: [0004] 1. When the UPS power supply loses power, it will cause a power outage in the PLC system. [0005]...

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to overcome the shortcoming that the PLC power supply system in the prior art cannot work reliably and continuously, and provide a PLC system power supply device, which can ensure the quality of the system power supply when the PLC system mains power grid fluctuates; When there is a power failure, the power supply of the PLC system is uninterrupted; when the UPS power supply fails and loses the ability to switch bypasses, the uninterrupted power supply of the PLC system is guaranteed

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