Hello,
I studied electronics in high school 23 years ago and my dad is a retired electrical engineer. Between the two of us we can figure out a schematic so any help here is appreciated. I am building a dust collection cyclone for my wood shop and assembled a sawdust bin level shutoff circuit but I have a concern. A normally open 110 vac photoelectric switch energizes a dpdt relay and shuts off power to a 40amp motor relay when the sensor see's an object within four inches. My concern is the sawdust in the bin will be swirling around and might trigger the sensor before the bin is full. I dropped a handful of sawdust in front of the photoelectric switch and it rapidly switched the 40amp relay on and off. I do not want this happening to a 5hp compressor duty motor. My thoughts are to integrate a time delay relay that only shuts off the 40amp relay after it has a steady object sensed for at least :30 seconds and ignore intermittent object sensing.
Thanks,
John
I studied electronics in high school 23 years ago and my dad is a retired electrical engineer. Between the two of us we can figure out a schematic so any help here is appreciated. I am building a dust collection cyclone for my wood shop and assembled a sawdust bin level shutoff circuit but I have a concern. A normally open 110 vac photoelectric switch energizes a dpdt relay and shuts off power to a 40amp motor relay when the sensor see's an object within four inches. My concern is the sawdust in the bin will be swirling around and might trigger the sensor before the bin is full. I dropped a handful of sawdust in front of the photoelectric switch and it rapidly switched the 40amp relay on and off. I do not want this happening to a 5hp compressor duty motor. My thoughts are to integrate a time delay relay that only shuts off the 40amp relay after it has a steady object sensed for at least :30 seconds and ignore intermittent object sensing.
Thanks,
John