Signals & Electrical
PNP
A common transistor output that switches positive voltage to the load or PLC input.
IN ONE SENTENCE
When active, a PNP sensor normally supplies positive voltage on its output.
In normal English
PNP is extremely common in modern European industrial control systems. The PLC input must be wired and designed to work with the sensor's sourcing output.
Why would I use it?
Use it when your receiving input is compatible with PNP/sourcing devices.
THINK OF IT LIKE…
The sensor hands positive voltage to the input when it says 'yes'.
Related terms
NPN, sourcing, sinking, digital input
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