o 111 R 96,5 5 5 , 5o 6448/17U 365 DC Axial Fan Axial fan with DC drive. This DC drive em- ploys an electronically commutated exter- nal rotor motor with high efficiency at low operating noise. The drive electronics is completely integrated into the fan hub. Darstellung entspricht Systembild Features Technical Data Low noise level through aerodynami- Nominal Voltage V DC 48 cally optimized housing and impeller. Voltage Range V DC 28-60 Electronic motor current limiting during -1 Nominal Speed min 3400 start-up or blocking. 3 Electronically safeguarded against in- Max. flow rate m /h 410 correct polarity. -3 3 Max. flow rate x10 m /s 241 Extremely low EMI. Noise free air dB(A) 56 Electrical connection via cable 1950mm Noise in opt. Operating range bels 6,2 long. Current consumption mA 355 Encapsulation of stator, winding and PCB (protection class IP 54) Power consumption W 17 Perm. Ambient temperature C -20 ... +72 at max. voltage. Service life (T h 35.000 Max) Service life (40 C) h 75.000 Approvals Can be approved for CSA, UL, VDE Bearing system Ball bearings Mass kg 0,760 All data are average figures at nominal voltage. Subject to technical change. 0,2 30,5 15 1 86 Performance Graph: 7,5 7,5 0,8 0,8 0,15 0,3 162 50,8 0,3 0,5 171,5 Air flow * Schraube (screw) DIN 7500C - M4 x 6 nur bei Typ 6448 (only model 6448) PAPST-MOTOREN GmbH & Co KG, Postfach 1435, D-78106 St. Georgen 6448/17U-365engl.DOC Static pressure p f 0,5 150 1 73 47,7 0,15 4,3 (8x) 10 *M4 10U (+) I Source U a I Sink U ba R a GND U (+) = Supply Voltage (+) U = Alarm Signal a U U - b a a L U = Alarm Supply Voltage R = ba a I sink GND = Ground (-) Ra = External Pull up-Resistor n>n n>n n>n G G G n (U /m in) *) N < n G lo ck ed n = 0 U /m in t U (+ (V o lt) t 2 t U U = U a aH ba (V o lt) U 0 ,3 V aL t Technical Data Alarm Circuit Designation Test condition Symbol Value This fan is equipped with an integrated alarm circuit producing a continuous output signal U a Alarm output voltage U max 60 V DC ba for monitoring fan speed. At proper operation in Max. sink current I max 20 mA the nominal voltage range the alarm output is a sink high level. Output voltage Low I = 2 mA U L 0,3 V sink a When speed decreases below limit speed n = G n<n G 1150 rpm, e.g. by high friction torque, locked Output voltage High U H 60 V rotor condition, or low operating voltage, a a n>n low level output will occur. G When speed recovers, the alarm signal goes Leakage current U = 60 V I max. 15 A a sink back to high, i.e. alarm is non-latched. n>n G Alarm delay time at start up only t 15 s 2 Signal rise and fall time t , t min. 0,5V/ s r f U (Stand TTL) a Alarm trip speed n 1150 U/min G tLow-High t High-Low Alarm Signal suppressed at start-up r f