Ultrasonic sensors UNDK 20 (Sd = 400 mm) Ultrasonic distance measuring sensors sample drawing 20 15 LED M8 x 1 14 42 6,5 3,2 29,5 9,5 Teach- in 5,7 11,8 general data sample picture scanning range sd 60 ... 400 mm scanning range close limit Sdc 60 ... 400 mm scanning range far limit Sde 60 ... 400 mm repeat accuracy < 0,5 mm resolution < 0,3 mm response time ton < 60 ms release time toff < 60 ms temperature drift < 2 % of distance to target So sonic frequency 290 kHz adjustment Teach-in alignment aid target indication flashing light indicator yellow LED / red LED electrical data voltage supply range +Vs 15 ... 30 VDC output current < 20 mA residual ripple < 10 % Vs short circuit protection yes reverse polarity protection yes voltage output current consumption max. (no load) 35 mA output signal 0 ... 10 V / 10 ... 0 V current output current consumption max. (no load) 55 mA output signal 4 ... 20 mA / 20 ... 4 mA load resistance +Vs max. < 1100 Ohm load resistance +Vs min. < 400 Ohm mechanical data type rectangular housing material polyester width / diameter 20 mm height / length 42 mm depth 15 mm connection types connector M8 1 www.baumer.com 2/6/2015 Ultrasonic sensors UNDK 20 (Sd = 400 mm) Ultrasonic distance measuring sensors ambient conditions operating temperature -10 ... +60 °C protection class IP 67 order reference output circuit UNDK 20I6912/S35A current output UNDK 20U6912/S35A voltage output 2 www.baumer.com 2/6/2015