1SDA038292R161000599 ABB

ABB 10A4555ZZBHCFBXX2211A41SR0554US
ABB PFTL301E 1.0KN 3BSE0190050R1000
ABB TVOC-2-240 ISFA 664 001 R1001
ABB TVOC-2-E1 1SFA 664 002 R1001
ABB TVOC-1T02-OP2 ISFA 664 004 R2020

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Description

PLC外部负载的供电线路应具有失压保护措施,当临时停电再恢复供电时,不按下“启动”按钮PLC的外部负载就不能自行启动。这种接线方法的另一个作用是,当特殊情况下需要紧急停机时,按下“停止”按钮就可以切断负载电源,而与PLC毫无关系。

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