Photoelectric switch control time relay control AC contactor delay closed
The way they control is such that the normally open contacts of the photoelectric switch relay are connected to the time relay coil to control the time relay. Time relay delay disconnect contact to connect the transmission mechanism of the AC contactor coil, control AC contactor.
Photoelectric switch relay is through the box or the container within the material flow, fall, making the photoelectric switch infrared or bright or dark optical reaction, the resulting photoelectric signal amplification circuit, so that the photoelectric switch relay closed. Because the flow of material and the speed of the fall soon, the photoelectric switch relay closed off frequently, can not be used by the transmission mechanism, so to install the time relay to extend the signal time so that the transmission mechanism has enough time to run, use.
Photoelectric switch relay is through the box or the container within the material flow, fall, making the photoelectric switch infrared or bright or dark optical reaction, the resulting photoelectric signal amplification circuit, so that the photoelectric switch relay closed.
Because the flow of material and the speed of the fall soon, the photoelectric switch relay closed off frequently, can not be used by the transmission mechanism, so to install the time relay to extend the signal time so that the transmission mechanism has enough time to run, use. The way they control is such that the normally open contacts of the photoelectric switch relay are connected to the time relay coil to control the time relay. Time relay delay disconnect contact to connect the transmission mechanism of the AC contactor coil, control AC contactor.
