Plc Input Wiring Diagram
Plc wiring diagrams guide include the discrete signals wiring plc digital input modules wiring plc output modules wiring and basics of plc terminations.
Plc input wiring diagram. Remove and lock out input power from the controller and io before any plc installation and wiring begins. Input and output sink no nc wiring connection. Ppx50581052 refer to this history in all correspondence andor discussion about this manual. When connecting to the plc the plc input acts as the load.
Verify that all modules are in the correct slots. In this article we are sharing the basic concepts of plc and dcs control systems wiring diagrams for digital input di digital output do analog input ai and analog output ao signals. You will notice that the load appears between the 0v blue and switching wire black. Check module type and model number by inspection and on the io wiring diagram.
A brief touch on troubleshooting using plc. The 0v blue will be attached to the common input and the switching wire black will be attached to the input number. Although the program itself appears to be a ladder logic diagram with switch and relay symbols there are no actual switch contacts or relay coils operating inside the plc to create the logical relationships between input and output. Note that these diagrams are without a barrier or isolator fuses and surge protector for keeping it very simple and understandable.