Inductive Sensor NPN TL-W5MC1 above 5v

Other Hardware Sensors
1

I bought some units of the TL-W5MC1 to use with my Arduino

Specification:

1.Product Name:Proximity Switch
2.Type:DC 3-wire NPN NO
3.Theory:Inductance Sensor
4.Output:Switching Transducer
5.Sensing Distance:5mm±10%
6.Sensing Object:Metal
7.Sensing Object:Iron 18x18x1mm
8.Rated Voltage:DC 6-36V
9.Rated Current:200mA

As my cnc structure is made of aluminum, I did some tests and saw that it detects between 2 ~ 3mm instead of 5mm when the material is iron.

If I use 12v or 24v the distance is a little longer than 6v for example. So I would like to use them with 24v, but the black cable responsible for the signal will burn (if not in hours, it will be in days/months) my arduino

How do I do to be able to connect the sensor to the pins of the limit switches? using the resistors?

2

They have open collector outputs. Connect the sensor output to an Arduino pin configured as INPUT_PULLUP. Connect the ground of the sensor to the ground of the Arduino.

3

Also to be absolutely safe you can add a signal diode in series with the sensor so it can only pull down.

Use physical 2k2 pull-up resistors to 5V on the Arduino, not the built-in pullups, as you need a strong pullup in an electrically noisy environment with long wiring looms carrying stepper motor and limit-switch wiring together.