What are the most common sensor outputs?
Four of the most common sensor outputs are NPN current sinking, PNP current sourcing, Two-wire DC/AC and Relay.
How do you know which sensor you need if you aren’t sure whether it is NPN or PNP?
One good question is to ask whether or not the common of the PLC is connected to + voltage or 0 voltage.
Response time requirement for rotating targets.
In order to calculate response time of a rotating target we have to convert rotational speed to linear speed.
Calculating Response Time Requirements
Response time of a sensor is the maximum amount of time it takes for the sensor to detect a target object and change the state of the output signal.
IP69K is a rating of German standard DIN 40050-9 extending the IEC 60529 rating system for high-pressure, high-temperature wash down applications.