612N/2GH DC Axial Fan 25mm compact low profile fan with high air flow value and minimum noise level. The DC drive employs an electronically commutated external rotor motor with high efficiency. Drive electronics is completely integrated into the fan hub. Features General Data Electronic protection against reverse Nominal voltage V DC 12 polarity, blocking and overloading. Voltage range V DC 8...15 Extremely low EMI. -1 Nominal speed min 5600 Electrical connection via 3 leads AWG 3 24, TR 64. Max. flow rate m /h 46 Max. flow rate CFM 27 Noise free air dB(A) 38 DBPe and DBPe registered Current consumption mA 200 Power consumption W 2,4 Permanent ambient temperature C -20 ... +70 Service life (70 C) h 35.000 Service life (40 C) h 70.000 Approvals UL, CSA, VDE Fan housing / impeller PBTP / PA 6.6 Bearing system Sleeve bearing Mass g 85 All data are average figures at nominal voltage Subject to technical change -3 3 0 2,5 5 7,5 10 x10 m /s 80 Pa 60 40 20 0 3 0 10 2030 405m/h0 Volumenstrom V ebmpapst GmbH & Co KG, Hermann-Papst-Strae 1, D-78106 St. Georgen 612N 2GHengl.doc 30.11.2006 Druckerhhung pf Tacho Signal /2 U (+) U s ISource U s U s high ISink U bs t 1 t 2 R a U s low GND 1 Revolution U (+) Supply Voltage UU- bs slow U Tacho Signal s R = a U Sensor Supply Voltage I bs sink GND Ground (-) R External Pull-Up Resistor a Output 2 pulses per revolution U 4...30 VDC bs U 4...30 VDC at I = 0 mA s high source U <= 0,4 VDC at I = 2 mA s low sink I = 4 mA sink max t / t 0,8 - 1,2 1 2 ebmpapst GmbH & Co KG, Hermann-Papst-Strae 1, D-78106 St. Georgen 612N 2GHengl.doc 30.11.2006