758014 ABB

ABB S252SDC-B6 DC250V 6A
ABB S253S-B2 AC400V 2A
ABB CI534V02

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Description

晶体管输出只能用于直流负载。此外,PLC的输出端子带负载能力是有限的,如果超过了规定的最大限值,必须外接继电器或接触器,才能正常工作。外接继电器、接触器、电磁阀等执行元件的质量,是影响系统可靠性的重要因素。常见的故障有线圈短路、

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