0
\$\begingroup\$

A proximity sensor has the following specs:

enter image description here

It is PNP output and the specs say 100mA at 30VDC.

Does that mean the resistor/load between the sensor's PNP output and the GND should be more than 30V/100mA = 300 Ohm?

How come 35mA supply is enough if the output can source 100mA?

\$\endgroup\$
2
\$\begingroup\$

How come 35mA supply is enough if the output can source 100mA?

The "35 mA or less" is the current taken by the device with no load on the PNP output.

Does that mean the resistor/load between the sensor's PNP output and the GND should be more than 30V/100mA = 300 Ohm?

Yes, at 30 volts but if the supply that feeds the load is only 24 volts then the resistance of the load can drop to 240 ohms and still maintain current no more than 100 mA.

\$\endgroup\$

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.