Encryption start-stop control circuit suitable for industrial assembly line

Abstract

The invention discloses an encryption start-stop control circuit suitable for an industrial assembly line. The circuit comprises a secondary line power supply port A and a power supply port B which are connected with an external 220V alternating current power supply, a pre-start contactor KM1, a pre-stop contactor KM2, an operation contactor KM, a thermal relay FR, a pre-start time relay KT1, a pre-stop time relay KT2, a bipolar circuit breaker QF1, a bipolar circuit breaker QF2, a button SB1, a button SB2, an operation indicating lamp HD1 and a shutdown indicating lamp HD2. The circuit has the characteristics of simple structure, simplicity and convenience in operation, multiple protection and clear indication, is suitable for electrical control of an assembly line which cannot be startedand stopped randomly, can effectively prevent false start and false stop, and ensures normal operation of production line equipment.

Description

technical field [0001] The invention relates to a control circuit, in particular to an encrypted start-stop control circuit. Background technique [0002] In the field of industrial manufacturing, the assembly line cannot be started and stopped at will, mainly because of three aspects: output, quality and energy consumption. Moreover, abnormal shutdown of some assembly lines will cause serious accidents, such as steelmaking plants and glass factories. For example, the float glass production line is about one kilometer long. The kiln melts various raw materials into glass water, and then follows the production line down. The liquid glass water floats on the melted tin water, and then goes down step by step, the glass liquid is gradually cooled, flattened, and finally cut into shape. If the furnace is shut down due to misoperation, the glass will quickly cool and harden. Once hardened, the production equipment will be blocked, and the entire factory will be shut down. In sev...

AI Technical Summary

Problems solved by technology

If the furnace is shut down due to misoperation, the glass will quickly cool and harden. Once hardened, the production equipment will be blocked, and the entire factory will be shut down. In severe cases, the entire production line will be scrapped.

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