Description of external connection scheme
The external connection diagram is a diagram that shows the electrical connections between devices and automation equipment installed on the process equipment, outside the boards and on the boards, as well as wiring connections to the devices and boards. The wiring diagram shows the external connections of the automation cabinet. The diagram shows the cabinet, its input and output elements (connectors, clamps, etc.) and the ends of the wires and cables connected to them for external installation, data on connecting the cabinet (characteristics of external circuits, addresses, marking) are indicated. The external wiring connection diagram is performed as a separate document in the presence of single multi-section or composite shields, a large number of junction boxes, group instrument racks, when connections to them make it difficult to read the connection diagram.
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