Datasheet
11、Installation drawing
Model no.: RD12038B24L
Item Major components Material & Specification Grade Rmark
Stainless steel
(SUS420J2)
Ball bearing or sleeve bearing
(Cu+GLY) 2100
Strontium ferrite
(BQB 14W)
MW 2
UEW
Polyvinyl Choride enamelled
copper wires (AWG#22)
7 10 Label Polyester
8 1、 100% Electric, rotating, dead spot, fan blade fasten, and primary noise test on production line
8 2、 100% Current wave test with scope on production line
8 3、 100% Strike test by hand and noise filter in quiet room
8 4、 10 cm drop test at random in accordance with MIL STD 105E standard
8 5、 Random inspection in accordance with MIL STD 105E standard
8 6、 Pass/Reject standard:
Critical AQL:0 4 Major AQL:0 65 Minor AQL:1 0
7 7
7 8 94V 0
7 6 Silicon steel strip (H23) (H 8)
7 5 Rubber magnet
7 4 Bearing Two Ball bearing
7 3 Stator core
7 1
7 2 PBT 85% + Fiber 15% 94V 0
CAM 1
T:0 8mm
Red wire:+polarity Black wire:
polarity
8、Product inspection procedure
Inspection procedures below are extremely followed
Wiring printed single layer boardPrinted Circuit Board
7 9 Lead wires 94V 0
7、Material
Heat resistance120℃
Fan housing
Fan blade
Material & Specification
0 22 0 23mm
Enamelled copper wires
PBT 70% + Fiber 30% 94V 0
9 2、
9、Notes:
9 1、
9 7、
9 8、
9 3、
9 4、
9 9、
9 10、
9 11、
The torque of the screw which locked the frame should not exceed 4 Kgf
It is very important to notify that avoid to drop from 60cm height when in any movement or
operation,it will impact the balance of blade Especially ball bearing structure is avoided to drop down
During the installation of the fan, please pay substantial attention to possible notice caused by
resonance vibration and shock
While the fan is in operation, please do not lock the fan intentionally for a long periods of time, since
the continuous stoppage will result in overheat and thus burnt out the fan
Please do not store the fan in the environment of high/low temperature or detrimental gas
We will not guarantee the products if the application of our products are exceeded the limitation which
is specified on this specification
In case of changes of the specification specified on this document A written notice is requested in
advance
Please do not touch the impeller with the pressure and never bring the fan with lead wire The bearing
and lead wire may be damaged
No guarantee on the products against the safety problem or failure caused by powder dust or insect
If there is any data or related documentation different from this data sheet This data sheet is the
principle reference
Please do not use the fan in the environment of corrosive liquid or detrimental gas
9 5、
9 6、
34 0dBA(Max 34 0dBA)
At rated voltage in sound proof room Suspension
Background noise:14 9dBA 1m
Free air
(Aim to center of the fan)
★
Fan
4 12、Accoustic sound level
MIC Sensor
4 12 1、 Accoustic sound level test descriptions
4 13 2、 Starting voltage is the least voltage that enables to start the fan by sudden power on
4 13 1、 Rated current, rated speed, and rated input power shall reach bottom line of specification after 5
minutes continuous rotation at rated voltage and reach standard specification after 10 minutes continuous at rated
voltage
5、 Protection:
4 13、 Characteristics definition:
Reversal voltage test: We took 200pcs for reversal voltage test at 24V for 1 minutes and all remain still
Fans work normally after corrected voltage
6、Safety
UL CE RoHS
√ √
Life ecpectance:50,000Hours continuous operation at rated voltage and normal temperature & humidity
4 11、Tensible strength of connector
Connector will not be any broken at 1 Kg for 15 seconds per
piece
14V(ON/OFF)
0 22A(Reference)
10℃ +70℃
30℃ +85℃
4 6、 Waterproof class
4 8、 Insulation resistance
4 9、 Dielectric strength
4 10、MTBF：50,000Hours
Grade IP58 to an immersion depth of 1 0 metre in water
At least 10MΩ at 500 VDC between housing and both lead
wires
Withstand 500 VAC 1 minute 1mA between housing and both
lead wires
4 2、 Starting voltage
4 3、 Locked current
4 4、 Operating temperature
4 5、 Storage temperature
3 2、Maximum air flow
3 3、Maximum static air pressure
4、 Characteristics
4 1、 Operating voltage range
83 6CFM
4 72mm H2O
14V 28V
2 2、Rated current
2 3、Rated input power
3、 Efficiency
3 1、Rated speed( range)
0 13±10%A
3 12±10%W
1950RPM±10%
1 2、Weight
1 3、Bearing
2、 Electrical characteristics( in free air at rated voltage)
2 1、Rated voltage
246g/pcs (Lead wire length x 300mm & without connector)
Two Ball bearing
24V
1、Mechanical
1 1、External dimension 120*120*38mm
Running
T1 T3 VOH
T2 T4
VOL
T=T1+T2+T3+T4
1、 Output waveform:square wave
2、 When the voltage value is higher (Voltage Y )then output waveform is higher
3、 When the fan is shutdown then output waveform is a horizontal line
4、 The cyclic distance is longer then the RPM is Slower
5、 RPM formula as follows:
Lmin=29250ns
=1950
10、RPM detection
RPM =
2925
15
Example
X=15ns
Voltage Strength(y)
Ls=1000ns
(Magnetism Strength
RPM =
2925
X(ns)
1 Cycle
Timer (X)