EC401-50 EC401-50 S3 YOKOGAWA

HIEE450932R1
HIEE401 481R0001
HIEE300698R0001
HIEE205010R001
HIEE300888R0002
ICSK20F1
815-BOV169
1786-RPA
1786-RPFM
1747-L542

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描述

PLC的供电电源,除了引进设备时同时引进PLC应根据产品说明书要求设计和选用外,一般PLC的供电电源应设计选用220VAC电源,与国内电网电压一致。重要的应用场合,应采用不间断电源或稳压电源供电。

如果PLC本身带有可使用电源时,应核对提供的电流是否满足应用要求,否则应设计外接供电电源。为防止外部高压电源因误操作而引入PLC,对输入和输出信号的隔离是必要的,有时也可采用简单的二极管或熔丝管隔离。

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