Slide #1.

PLC Front Panel
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Slide #2.

PLC Wiring • Power Inputs • Signal Inputs • Control Outputs
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Slide #3.

PLC Isolation
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Slide #4.

Power Wiring • Three levels of protection: – PLC logic - shutdown sequence – PLC output power disconnect – E-Stop shutdown of all energy sources
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Slide #5.

PLC Inputs and Outputs • Sinking = drawing current • Sourcing = supplying current • Sinking output connects to sourcing input • Sourcing output connects to sinking input
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Slide #6.

DL06 Signal Inputs
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Slide #7.

Signal Inputs
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Slide #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
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Slide #9.

Another Input Device • Photosensor – comes in either NPN (sinking) or PNP (sourcing)
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Slide #10.

DC Control Outputs
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Slide #11.

DC Control Outputs
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Slide #12.

Wiring Methods
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