Banner Engineering Maxi-Beam® RPBT Power Block, Photoelectric Sensor, 10 to 30 VDC, Bi-Polar NPN/PNP Output

Power block RPBT is the one most often used in low voltage dc applications. There are two solid state output switches (transistors), each rated at 1/4 amp. The NPN output at terminal #3 of the wiring base sinks current to the negative side of the power supply. The PNP output at terminal #4 sources current to the load from the positive side of the power supply. Both outputs may be used simultaneously. Response time of a MAXI-BEAM which uses model RPBT is the response time which is programmed at the sensor head (plus logic delays, if any).