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PLC Front Panel

PLC Front Panel. PLC Wiring. Power Inputs Signal Inputs Control Outputs. PLC Isolation. Power Wiring. Three levels of protection: PLC logic - shutdown sequence PLC output power disconnect E-Stop shutdown of all energy sources. PLC Inputs and Outputs. Sinking = drawing current

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PLC Front Panel

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  1. PLC Front Panel

  2. PLC Wiring • Power Inputs • Signal Inputs • Control Outputs

  3. PLC Isolation

  4. Power Wiring • Three levels of protection: • PLC logic - shutdown sequence • PLC output power disconnect • E-Stop shutdown of all energy sources

  5. PLC Inputs and Outputs • Sinking = drawing current • Sourcing = supplying current • Sinking output connects to sourcing input • Sourcing output connects to sinking input

  6. DL06 Signal Inputs

  7. Signal Inputs

  8. Typical Input Device • The tag indicates that the LOAD (PLC input) has a +DC common • this is a sinking output • Sinking output => sourcing input

  9. Another Input Device • Photosensor – comes in either NPN (sinking) or PNP (sourcing)‏

  10. DC Control Outputs

  11. DC Control Outputs

  12. Wiring Methods

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