DC Brushless Axial fan W38S12BS1B5-57
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High Airflow, Low Power Consumption And Long Lifespan
FeaturesFeatures
- 38 x 38 mm 12 VDC Brushless Fan
- High Airflow (21.1 CFM @ 0.60 m3 /min )
- Low Current Consumption 0.77A (Nominal) 0.84 A (Peak)
- Long Lifespan 70,000 hours @ 40°C & 65 % R.H.(L10 Expectancy)
- Ball Bearings
- Single Rotor Fan
- PWM Speed Control With Tach Output
- The highly reliable fan motor is widely used in various applications.
- Manufactured by NIDEC CORPORATION
Characteristic Curve
1.Mechanical Specifications
| Housing material | PBT (UL94 V-0) |
|---|---|
| Impeller material | PBT (UL94 V-0) |
| Bearing | Ball bearings |
| Mass | About 60 g |
| Life expectancy L10 | 70,000 hours 1）At 40°C (65 % R.H.), continuous operation at rated voltage. 2）Life is defined when the motor speed decreases more than 30% against its initial speed. |
2.Electrical Specifications
| No. | Item | Specifications | Remarks |
|---|---|---|---|
| 2-1 | Rated voltage | 12 VDC | |
| 2-2 | Operating range | 10.8~13.2 V | (Note 5) |
| 2-3 | Current consumption | Max. 0.84 A 0.77 A (Nominal) |
In free air at rated voltage (Note 4)(Note 6) |
| 2-4 | Power consumption | Max. 10.08 W 9.24 W (Nominal) |
In free air at rated voltage (Note 4) |
| 2-5 | Rated speed | Min. 22500 min-1 25000 min-1 (Nominal) Max. 27500 min-1 |
In free air at rated voltage Inlet side |
| 2-6 | Maximum air flow | Min. 0.51 m3 /min (18.0 CFM) 0.60 m3 /min (21.1 CFM) |
At rated voltage At zero static pressure (Note 4) |
| 2-7 | Maximum static pressure | Min.688 Pa (2.76 inch-H2O) 895 Pa (3.59 inch-H2O) |
At rated voltage At zero air flow (Note 4) |
| 2-8 | Acoustic noise | Max. 66.0 dB (A) 59.5 dB (A)(Nominal) |
In free air at rated voltage
|
| 2-9 | Operating temperature | -10°C~70°C (Normal humidity) | Reffer to item 5-1 about the operating temperature at 80°C |
| 2-10 | Storage temperature | -40°C~75°C(Normal humidity) |
Standards for ltems 2-3~2-8 should be |
| 2-11 | Direction of rotation | Clockwise from label side | |
| 2-12 | Direction of air flow | Label side discharge | |
| 2-13 | Insulation resistance | Min.10 MΩ | At 500 VDC between frame and lead wires |
| 2-14 | Dielectric strength | Must withstand 500 VAC 1min | Max. 1mA between frame and leads (Usually inspect at 600 VAC,1 sec,1 mA) |
| 2-15 | Protection | Current limit protection | (Note 2) |
| Reverse polarity protection | (Note 3) |
- Note1:The above standard should be the specified value at normal temperature(23°C) and normal humidity (60~65%) unless otherwise notice. As to the value of item 2-3~2-8, it should be measured after 10 minutes operation.
- Note2: In the case that power is turned on during fan rotor is locked, the fan shall attempt to restart at a typical repetition rate (Temperature rise will be prevented). The fan will automatically restart when the locked rotor condition is released.
- Note3: Power supply voltage must not be applied between signal output line and any other line directly. Reverse polarity protection is effective to just switch the positive and negative power line.
- Note4: Control signal(Blue lead wire) should be applied 2.6 V to 6.0 V, or should be open.
- Note5: 10.8 V~13.2 V operating voltage range is for continuous DC voltage. Power supply voltage ripple 5% maximum.
- Note6: The max value of current consumption does not represent the peak value.
3.Provision of Revolution Signal
3-1 Output of Revolution Signal
● Output type: open collector type
● Electrical specification
Remark: As for measuring VOL , it is necessary to put cr low pass filter which is constructed of R1 and C1. The time constant of R1 x C1 is to be more than 24us such as R1=2.4 kΩ C1=0.01 uF.
● Absolute maximum specification
Collector current IC=10 mA Max.
Release Voltage VOH= 15 V Max.
● Electrical characteristics
Saturation Voltage VOL = 0.8 V Max.
At IC=5 mA
● Output waveform
- Remark: At locked position, output becomes VOH OR VOL .
- T=T1+T2+T3+T4=60/N (Sec) N: Fan Speed (min-1)
- DUTY =T1/T1+T2= 50±10%
⚠ CAUTION
Please be careful that revolution signal lead wire (Yellow wire) shall not have any voltage directly applied. (It should damage inner circuit.)
4.PWN Control
4-1 TYPE
● The method of active/inactive drive mosfet for speed control.
*Actual machine side is TTL/CMOS(OD/OC) PWM controlled.
- VCONT is above 2.6 V ··· Fan should run full speed.
- VCONT is below 0.8 V ··· Fan should run low speed.
- Control wire should accept PWM control, PWM frequency is from 20 kHz to 30 kHz.
4-2 PWM CONTROL SIGNAL
● Signal voltage range:0~6.0 VDC
- The frequency for control signal of the fan shall be able to accept at 20 kHz-30 kHz.
- PWM signal with 3.3 VDC TTL/COMS(OD/OC) level. The preferred operating point for the fan is 25 kHz, and duty cycle from 0% to 100%.
- If the PWM control wire connect to ground, the rotor will spin at low speed.
- At 100% duty cycle, the rotor will spin at maximum speed.
- If the PWM control wire open, the rotor will spin at maximum speed.
4-3 SPEED VS PWM CONTROL SIGNAL, AT RATED VOLTAGE
| Duty cycle (Positive)(％) | Speed min-1 |
|---|---|
| 0 | 3000±1500 |
| 100 | 25000±2500 |
- Note: Stop duty is 10%±5%.the standards should be the specified value at normal temperature(21~25°C) and normal humidity(60~65%) and free air unless otherwise notice.
5.Special Test
5-1 VIBRATION TEST
- Standards for items 2-3~2-8 and 6-2 should be met after 30 minutes 0.2 mm amplitude, 55 Hz vibration in each direction: up-down, right-left, forward-back, in nonoperating condition.
5-2 SHOCK TEST
- Standards for items 2-3~2-8 and 6-2 should be met if the fans fall naturally from a height of 30cm in the packing box for each direction.
*Dimensions of Packing Box (W x D x H) : 360 x 540 x 180 (mm)
6.Others
6-1 CONNECTION
6-2 LOCKED ROTOR
No damage shall be found for continuous 1 hour at locked rotor.
6-3 ⚠ CAUTIONS IN INSTALLATION OF FAN MOTORS
- Please consider system layout not to place any obstacles within 3mm from the fan housing edge of inlet side (Impeller side).
- In case of screwing the fan housing, flatness of installation surface should be max. 0.1, otherwise the housing may transform and interfere with the impeller.
- The fan should not get any impact or vibration during rotation. When vibration or impact is applied to the fan during rotation, the fan may break by interfering with obstacle in the system.
- Please fix the fan in the system so that it will not rattle.
- Vibration of the fan may cause contact between the fan and the system, which will generate noise.
- Please do not place any obstacle near outlet and inlet side of the fan.
- Placing obstacles near the fan may deteriorate air flow.
- It may cause cooling performance reduction as well as fan motor life deterioration due to heavy load on the bearings.
- For any usage that does not meet above conditions, please evaluate at user's side or consult with us.
6-4 ⚠ USAGE OF FAN MOTOR
- Please do not put resistors or other electronic components on the extension of the fan motor lead wires for the purpose of fan motor speed reduction.
- It may make the voltage to the fan fluctuate and become lower than lower limit of operating voltage range.
- In this case, there may be such failures like no start or unstable rotation of fan motor.
- Please do not plug in or plug out the connector when the power is on. It may damage the fan.
7.Special Items
7-1 WARRANTY
- Our warranty is limited to the replacement of failed fan at free of charge, if and only if the failure is found within two years after it was shipped out from our production facility and if the cause of the failure is proven to be attributable to the supplier.
- Our liability does not extend to the consequential damages caused by the failed fan.
7-2 NOTE
Please consider having an independent protection system in the customer's instruments in the event that the fan should stop operating.
7-3 POWER SOURCE
Brushless DC fans are designed to be used at DC power source with bypass capacitor. We would recommend you to use DC power source which is filtered ripple and noise.
- Fans are designed to perform as expected when stable voltage is supplied.
- Fluctuation of the voltage between Vcc(+) and GND while the fan is powered must be within the specified operating voltage range.
- Fluctuation cycle of the voltage between Vcc(+) and GND while the fan is powered must be longer than the fan's rotation cycle.
- GND of the fan must be kept below the voltage of its Vcc(+) when the voltage is switched ON/OFF or the fan is not running.
- Devices that use the fans are supposed to be designed so that the voltage applied on the revolution signal is not affected by power ON/OFF.
7-4 ENVIRONMENT-RELATED SUBSTANCES
Based on RoHS3, cadmium, lead, mercury and compound of these substances and hexavalent chromium compound, Polybromo bi-phenyl(PBB) and polybromo di-phenyl ether(PBDE) are not included in this product
8.Outline Dimensions
(Unit: mm)
Documents
- ●The above contents and descriptions are subject to change without notice.
