Photoelectric sensors FHDK 20 Diffuse sensors with background suppression sample drawing Button LED 15 * 18,2 6,5 3 3,2 42 LED M8 x 1 14 20 3 5,7 11,8 * emitter axis general data sample picture type background suppression light source pulsed red LED sensing distance Tw 30 ... 200 mm sensing range Tb (at Tw max.) 2 ... 200 mm sensing range Tb (at Tw min.) 12 ... 30 mm alignment / soiled lens indicator flashing light indicator light indicator LED green output indicator LED yellow sensing distance adjustment Teach-in wave length 660 nm suppression of reciprocal influence yes electrical data response time / release time < 0,5 ms voltage supply range +Vs 12 ... 30 VDC current consumption max. (no load) 48 mA current consumption typ. 28 mA voltage drop Vd < 1,8 VDC output function light / dark operate output current < 100 mA short circuit protection yes reverse polarity protection yes mechanical data width / diameter 20 mm height / length 42 mm depth 15 mm type rectangular housing material plastic (PBT-ASA) front (optics) PMMA connection types connector M8 4 pin ambient conditions operating temperature -25 ... +65 °C protection class IP 67 1 www.baumer.com 2/6/2015 Photoelectric sensors FHDK 20 Diffuse sensors with background suppression order reference output circuit FHDK 20N6901/S35A NPN FHDK 20P6901/S35A PNP 2 www.baumer.com 2/6/2015