Homing Sensors

[flytyree]

I am not sure if I have damaged or the sensor has failed but, the sensor (for the Y axis) no longer functions. That is the red and green light are both illuminated and when I pass something between the posts the light status remains the same.

I am ordering two new sensors but wonder if the current sensors can be salvaged?

C

 

[x-cnc]

Ordinarily sensors can't be salvaged. You should be able to test if it's good or bad though. With both LED's on at the same time it sounds bad, but I would first find out what damaged it before installing a new one.

 

[flytyree]

Thank you for that information.

After close examination there is no wear or damage to the contacts.

Are the sensors normally red and turn green when "homed" ?

 

[masso-support]

Yes if both the LED's are ON then its not normal.

1. How did you wire the sensors
   
2. How much voltage you used to power the sensor
   

 

[x-cnc]

Sensors should be red - OR - green, not red and green.



This video might help you;

 

[flytyree]

Thank you X-cnc and MASSO.

The lights on the two working sensors are red and turn green when the light is interrupted.

The voltage to the sensors is a measured 5.07 V

The sensors are wired as depicted in the manual diagrahm

I plugged the "non working" sensor into the connector of a working homing sensor and this resulted in the same red - green illumination. To me that confirms the sensor is malfunctioning / bad.

My two new sensor are scheduled to arrive sometime Monday. I am somewhat reluctant to use a new sensor until I do more trouble shooting. The sensors are not that expensive but the shipping to the USA is.

C

 

[masso-support]

• Yes its a good idea to first find why the sensor got damaged because you might damage the new ones, all sensors are tested before shipping.
  
• The only way I can see them getting damaged if 5v was supplied to the sensor output pin or if the voltage to the sensor was more than 5v.
  

 

[flytyree]

This sensor had been working for quite a few hours and all of a sudden it malfunction during a homing operation. There was no change to input / output.

If the "pin" that was the trigger for this sensor touched the legs of the sensor could that have caused the fault? Even using a magnifying glass I could not see any mechanical damage to the sensor.

 

[masso-support]

Yes it depends which pin and where it touched.