8314/19H DC Axial Fan 80mm axial fan with high air flow. The DC drive employs an electronically commutated external rotor motor with high efficiency. Drive electronics is com- pletely integrated into the fan hub. The air flow and noise level can be controlled by varying the supply voltage range. General Data Nominal voltage V DC 24 Features Voltage range V DC 12 ... 26.5 Electronic protection against lock- Nominal speed rpm 5000 (+/- 7,5 %) ing or overload. 3 Max. flow rate m /h 80 Electronic reverse polarity protec- Max. flow rate CFM 47 tion. Fan starts only with correct polarity. Noise free air dB(A) 48 Alarm output signal type /19 high Noise in optimum operating range bels 6.2 on fail for details please refer to alarm specification attached. Current consumption mA 270 Electrical connection via 3 leads Power consumtion W 6.4 AWG 22, TR64, 310mm long, stripped and tinned ends (red = Permanent ambient temperature C -20 ... +65 +24V black = GND yellow = at max. voltage alarm) Service life (65 C) h 37.500 Service life (40 C) h 70.000 Patents granted or applied for. Approvals UL, VDE, CSA Fan housing / impeller PBTP / PA 6.6 Bearing system Ball bearings Mass kg 0,170 All data are mean values at nominal conditions. Subject to change without notice -3 3 0 5 10 15 x10 m /s 140 Pa 100 80 60 40 20 0 3 0 102030 405060 m/h80 Volumenstrom V ebm-papst St. Georgen GmbH & Co KG 8314 19H.doc 24.11.2009 Druckerhhung pf Alarm Signal Output: U (+) I Source U a I Sink U ba R a GND U (+) = Supply Voltage (+) U = Alarm Signal a UU - b a a L U = Alarm Supply Voltage R = ba a I sink GND = Ground (-) Ra = External Pull up-Resistor nn> nn> nn> G G G n U/m in nn< blockiert G n= 0 U/m in t U(+ ) Volt t Ua Volt t Technical Data Designation Test conditionSymbol Value Alarm Circuit Alarm output voltage U max 60 V DC ba Max. sink current I max 20 mA sink This fan is equipped with an integrated alarm circuit producing a continuous Output voltage Low I = 20 mA U L 0,3 V sink a output signal U for monitoring fan a n<n G speed. At proper operation in the nomi- nal voltage range the alarm output is a Output voltage High U H 60 V a low level. n>n G When speed decreases below limit Leakage current U = 60 V I max. 15A speed n = 1500rpm (+/-100rpm), e.g. a sink G by high friction torque, locked rotor n>n G condition, or low operating voltage, a Alarm delay time at start up only t < 15 s +/- 1s 2 high level output will occur. When speed recovers, the alarm signal Signal rise and fall time t , t min.0,5V/s r f goes back to low, i.e. alarm is non- U (Stand TTL) a latched. Alarm trip speed n 1500pm G +/- 100rpm t Low-High t High-Low Alarm Signal suppressed at start-up r f ebm-papst St. Georgen GmbH & Co KG 8314 19H.doc 24.11.2009