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for more information, please visit the product page. ????????? ?????????????????? cui .com 07/26/2017 1 of 11 series : CFM-120V description: dc axial fan features ? omnicool tm bearing system ? 120 x 120 mm frame ? multiple speed options for different cooling needs ? tachometer signal and rotation detect options available ? auto restart protection standard on all models model input voltage input current 1 input power 1 rated speed 1 air fow 2 static pressure 3 noise 4 rated (vdc) range (vdc) max (ma) max (w) typ (rpm10%) (cfm) (inch h 2 o) max (dba) cfm-a225v-122-340 12 4.5~13.8 161 1.94 2200 75.0 0.16 34.0 cfm-a225v-127-405 12 4.5~13.8 288 3.46 2700 93.0 0.22 40.5 cfm-a225v-131-445 12 4.5~13.2 403 4.84 3100 108.2 0.28 44.5 cfm-a225v-222-340 24 10.0~27.6 97 2.32 2200 75.0 0.16 34.0 cfm-a225v-227-405 24 10.0~27.6 168 4.03 2700 93.0 0.22 40.5 cfm-a225v-231-445 24 10.0~27.6 238 5.71 3100 108.2 0.28 44.5 cfm-a225v-322-340 48 24.0~56.0 62 2.98 2200 75.0 0.16 34.0 cfm-a225v-327-405 48 24.0~56.0 91 4.36 2700 93.0 0.22 40.5 cfm-a225v-331-445 48 24.0~56.0 137 6.57 3100 108.2 0.28 44.5 cfm-a238v-121-370 12 6.0~13.8 277 3.33 2100 93.0 0.18 37.0 cfm-a238v-126-440 12 6.0~13.8 484 5.81 2600 116.0 0.26 44.0 cfm-a238v-131-480 12 6.0~13.8 958 11.50 3100 138.0 0.36 48.0 cfm-a238v-221-370 24 10.0~27.6 150 3.59 2100 93.0 0.18 37.0 cfm-a238v-226-440 24 10.0~27.6 258 6.18 2600 116.0 0.26 44.0 cfm-a238v-231-480 24 10.0~27.6 440 10.57 3100 138.0 0.36 48.0 cfm-a238v-321-370 48 24.0~56.0 79 3.81 2100 93.0 0.18 37.0 cfm-a238v-326-440 48 24.0~56.0 138 6.62 2600 116.0 0.26 44.0 cfm-a238v-331-480 48 24.0~56.0 233 11.21 3100 138.0 0.36 48.0 notes: 1. at rated voltage, 25c, 0 inch h 2 0 static pressure, after 10 minutes 2. as per amca 210 or din 24163, at rated voltage, stabilized rpm, 0 inch h 2 0 static pressure 3. as per amca 210 or din 24163, at rated voltage, stabilized rpm, 0 cfm airfow. 4. measured in a semi-anechoic chamber with background noise < 15 dba at 1 m from the fan intake. 5. all specifcations are measured at 25c, 65% relativ e humidity unless otherwise specifed. part number key cfm-a225v-122-340 - xx - cxx reserved for custom confgurations base number fan signals blank = no signals 11 = rotation detector signal 20 = tachometer signal date page
for more information, please visit the product page. ?????????????????? cui .com date 07/26/2017 page 2 of 11 cui inc series : CFM-120V description: dc axial fan input parameter conditions/description min typ max units operating input voltage 1 12 vdc input models 24 vdc input models 48 vdc input models 4.5 10.0 24.0 12 24 48 13.8 27.6 56.0 vdc vdc vdc starting voltage 2 12 vdc input models 24 vdc input models 48 vdc input models 4.5 10 24 vdc vdc vdc note: 1. see model section on page 1 for specifc input voltage ranges. 2. starting voltage for models cfm-a238v-121-370, cfm-a238v-126-440, and cfm-a238v-131-480 is 6 vdc. performance 3 parameter conditions/description min typ max units rated speed at rated voltage, 25c, after 10 minutes 2100 3100 rpm air fow at 0 inch h 2 o, see performance curves 75.0 138.0 cfm static pressure at 0 cfm, see performance curves 0.16 0.36 inch h 2 o noise at 1 m 34.0 48.0 dba note: 3. see model section on page 1 for specifc values. protections / features 4 parameter conditions/description min typ max units auto restart on all models rotation detector signal available on 11 models tachometer signal available on 20 models notes: 4. see application notes for details. safety & compliance parameter conditions/description min typ max units insulation resistance of frame at 500 vdc between internal stator and positive lead wire 10 m? dielectric strength apply 500 vac for 1 minute between housing and positive lead wire safety approvals ul/cul 507, tuv (en 60950-1) emi/emc en 61000-6-1:2007, en 61000-6-3:2007+a1 life expectancy at 40c, 65% rh 70,000 hours rohs 2011/65/eu environmental parameter conditions/description min typ max units operating temperature -10 70 c storage temperature -40 70 c
for more information, please visit the product page. ?????????????????? cui .com date 07/26/2017 page 3 of 11 cui inc series : CFM-120V description: dc axial fan performance curves 1 1/16 1/ 2 1/26 1/ 3 1/36 13 15 17 19 12 11 1 2 3 4 5 6 11 /5 1/92 /3 2/73 3/ 53 /9 ai r flow (cfm ) static pressure (inch h 2 o) air flow (cmm ) static pressure (mm h 2 o) cfm-a225v-122-340 cfm-a225v-127-405 1 1/16 1/2 1/26 1/3 1/36 1/4 13 15 17 19 1 211 23 1 1 2 3 4 5 6 7 8 9 11 /6 22 /6 33 /6 4 ai r flow (cfm ) static pressure (inch h 2 o) air flow (cmm ) static pressure (mm h 2 o) cfm-a225v-131-445 0 1.42 2.84 0.25 0.125 0 50 10 0 7.5 5 2.5 0 cfm cmm air flow inch h o 2 mm h o 2 static pressure cfm-a225v-222-340 1 1/16 1/2 1/26 1/3 13 15 17 19 1 1 1/6 2 2/6 3 3/6 4 4/6 5 11 /4 1/ 71 /: 2/3 2/62 /9 3/23 /5 ai r flow (cfm ) static pressure (inch h 2 o) air flow (cmm) static pressure (mm h 2 o)
for more information, please visit the product page. ?????????????????? cui .com date 07/26/2017 page 4 of 11 cui inc series : CFM-120V description: dc axial fan performance curves ( continued ) 0 1.42 2.84 0.25 0.125 0 50 10 0 7.5 5 2. 5 0 cfm cmm air flow inch h o 2 mm h o 2 static pressure cfm-a225v-227-405 cfm-a225v-231-445 0 1.42 2.84 0.25 0.125 0 50 10 0 7.5 5 2. 5 0 cfm cmm air flow inch h o 2 mm h o 2 static pressure cfm-a225v-322-340 0 1.42 2.84 0.25 0.125 0 50 10 0 7.5 5 2. 5 0 cfm cmm air flow inch h o 2 mm h o 2 static pressure cfm-a225v-327-405 0 1.42 2.84 0.25 0.125 0 50 10 0 7.5 5 2. 5 0 cfm cmm air flow inch h o 2 mm h o 2 static pressure
for more information, please visit the product page. ?????????????????? cui .com date 07/26/2017 page 5 of 11 cui inc series : CFM-120V description: dc axial fan performance curves ( continued ) 0 1.42 2.84 0.20 0.10 0 50 10 0 6 4 2 0 cfm cmm air flow inch h o 2 mm h o 2 static pressure cfm-a225v-331-445 cfm-a238v-121-370 0 1.70 3.40 0.25 0.125 0 60 12 0 7.5 5 2. 5 0 cfm cmm air flow inch h o 2 mm h o 2 static pressure cfm-a238v-126-440 0 1.70 3.40 0.40 0.20 0 60 12 0 12 8 4 0 cfm cmm air flow inch h o 2 mm h o 2 static pressure cfm-a238v-131-480 0 1.42 2.84 0.25 0.125 0 50 10 0 7.5 5 2. 5 0 cfm cmm air flow inch h o 2 mm h o 2 static pressure
for more information, please visit the product page. ?????????????????? cui .com date 07/26/2017 page 6 of 11 cui inc series : CFM-120V description: dc axial fan performance curves ( continued ) 0 1.70 3.40 0.25 0.125 0 60 12 0 7.5 5 2. 5 0 cfm cmm air flow inch h o 2 mm h o 2 static pressure cfm-a238v-221-370 cfm-a238v-226-440 0 1.70 3.40 0.40 0.20 0 60 12 0 12 8 4 0 cfm cmm air flow inch h o 2 mm h o 2 static pressure cfm-a238v-231-480 0 1.42 2.84 0.20 0.10 0 50 10 0 6 4 2 0 cfm cmm air flow inch h o 2 mm h o 2 static pressure cfm-a238v-321-370 0 1.42 2.84 0.20 0.10 0 50 10 0 6 4 2 0 cfm cmm air flow inch h o 2 mm h o 2 static pressure
for more information, please visit the product page. ?????????????????? cui .com date 07/26/2017 page 7 of 11 cui inc series : CFM-120V description: dc axial fan performance curves ( continued ) 0 1.70 3.40 0.40 0.20 0 60 12 0 12 8 4 0 cfm cmm air flow inch h o 2 mm h o 2 static pressure cfm-a238v-326-440 cfm-a238v-331-480 0 1.70 3.40 0.25 0.125 0 60 12 0 7.5 5 2. 5 0 cfm cmm air flow inch h o 2 mm h o 2 static pressure
for more information, please visit the product page. ?????????????????? cui .com date 07/26/2017 page 8 of 11 cui inc series : CFM-120V description: dc axial fan mechanical parameter conditions/description min typ max units motor 4 pole dc brushless bearing system omnicool tm direction of rotation counter-clockwise viewed from front of fan blade dimensions cfm-a225v models: 120 x 120 x 25 cfm-a238v models: 120 x 120 x 38 mm mm material pbt (ul94v-0) weight cfm-a225v models cfm-a238v models 162 218 g g mechanical drawings cfm-a225v cfm-a238v wire connections wire color function red +vin black -vin white 1 rd signal yellow 1 tach signal mounting screw (pan head) screw type size standard torque machine screw m4 jis b1111-1974 3~4 kgf-cm self-tapping screw m5 jis b1122 type 2 6~8 kgf-cm units: mm wire: ul 1007, 24 awg wire connections wire color function red +vin black -vin white 1 rd signal yellow 1 tach signal notes: 1. wires only present on versions with output signals.
for more information, please visit the product page. ?????????????????? cui .com date 07/26/2017 page 9 of 11 cui inc series : CFM-120V description: dc axial fan application notes figure 1: auto start protection auto restart protection when the fan motor is locked by an external force, the device will temporarily turn off electrical power to the motor and restart automatically when the locked rotor condition is released. tachometer signal (yellow wire) the tachometer signal is for detecting the rotational speed of the fan motor . the output will be a square wave when fan is operating and logical high (vcc) when fan motor is locked (see figures 4~5 below). the relationship between rpm & output pulses from the signal wire is as follows. 1 rpm = 2 pulses 1 pulse 1 rpm run locked vsi g t vl vcc figure 5: tachometer output circuit dc fa n red (+) yellow black (- ) customer circui t vc c ic rl vcc max input voltage ic 4 ma rl vcc/ic vl 0.5 v vsig figure 4: tachometer output waveform rotation detector signal (white wire) the rotation detector signal is used to detect if the fan motor is oper ating or stopped. the output will be logical low (vl) when fan is operating and be logical high (vcc) when fan motor is locked. (see figures 2~3 below). figure 2: rotation detector output waveform figure 3: rotation detector output circuit run locked vsi g t vl vcc dc fa n red (+) white black (-) customer circuit vc c ic rl vcc max input voltage ic 4 ma rl vcc/ic vl 0.5 v vsig run input current t locked
for more information, please visit the product page. ?????????????????? cui .com date 07/26/2017 page 10 of 11 cui inc series : CFM-120V description: dc axial fan safety considerations 1. do not use or operate this fan in excess of the limitations set forth in this specifcation. cui is not responsible for the non-performance of this fan and/or any damages resulting from its use, if it is not used or operated in accordance with the specifcations. 2. cui recommends adding a protection circuit to the product or application in which this fan is installed, such as a thermo-fuse, or current fuse or thermo-protector. the failure to use such a device may result in smoke, fre, electric shock by insulation degradation in cases of motor lead short circuit, overload, or over voltage, and/or other failure. 3. cui recommends installing a protection device to the product or application in which this fan is installed if there is a possibility of reverse connection between vdc (+) and gnd (-). the failue to install such a device may result in smoke, fre, and/or destruction, although these conditions may not manifest immediately. 4. this fan mush be installed and used in compliance with all applicable safet y standards and regulations. 5. use proper care when handling and/or installing this fan. improper handling of installation of this fan ma y cause damage that could result in unsafe conditions. 6. use proper care during installation and/or wiring. failure to use proper care may cause damage to certain components of the fan including, but not limited to, the coil and lead wires, which could result in smoke and/or fre. 7. do not use power or ground pwm to control the fan speed. if the fan speed needs to be adjusted, please contact cui to customize the product design for your application. 8. for critical or extreme environments, including non-stop operation, please contact cui and we will gladly provide assistance with your product selection to ensure an appropriate cooling product for your application. 9. when building your device, please examine thouroughly any variation of emc, temperature rise, life data, quality, etc. of this product by shock/drop/vibration testing, etc. if there are any problems or accidents in connection with this product, it should be mutually discussed and examined. 10. use proper care when handling these fans. components such as fan holders or bearings ma y be damaged, if touched with fngers or other objects. additionally, static electricity (esd) may damage internal circuits of the fan. 11. do not operate these fans in proximity to hazardous materials such as organic silicon, cyanogens, formalin, phenol, or corrosive gas environments including, but not limited to, h 2 s, so 2 , no 2 , or cl 2 . 12. cui recommends that you protect these fans from exposure to outside elements such as dust, condensation, humidity, or insects. exposure of this fan to such elements may affect its performance and my cause safety hazards. cui does not warrant against damage to the product caused by outside elements. 13. the fans must be installed properly and securely. improper mounting may cause harsh resonance, vibration, and noise. 14. do not store these fans in an environment with high humidity. these fans must be stored in accordance with the specifed storage temperature. 15. cui reserves the right to use components from multiple sources at its discretion. the use of components from other sources will not affect the specifcations as described herein. 16. the life expectancy of these fans has not been evaluated for use in combination with any end application. therefore, the life expectancy that relate to these fans are only for reference.
for more information, please visit the product page. ????????? date 07/26/2017 page 11 of 11 cui inc series : CFM-120V description: dc axial fan cui offers a one (1) year limited warranty. complete warranty information is listed on our website. cui reserves the right to make changes to the product at any time without notice. information provided by cui is believed to be accurate and reliable. however, no responsibility is assumed by cui for its use, nor for any infringements of patents or other rights of third parties which may result from its use. cui products are not authorized or warranted for use as critical components in equipment that requires an extremely high level of reliability. a critical component is any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its safet y or effectiveness. headquarters 20050 sw 112th ave. tualatin, or 97062 800.275.4899 fax 503.612.2383 cui .com techsupport@cui.com rev. description date 1.0 initial release 07/26/2017 the revision history provided is for informational purposes only and is believed to be accurate. revision history

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