1: Brushless DC Air Blower Features:
1: High speed, specialized high-speed ball bearing(NMB) offering long service life and lower noise
2: High pressure and airflow output by compact size design
3: High efficiency, much more efficient than brush motor blower
4: High reliability, specialized controller make the working more reliable
5: High intelligent, PWM speed regulation, positive inversion, PG signal feedback, intelligent controlling
2: Products Parameters
| Model | OWB9250-240 | OWB9250-220 |
| Rated Voltage | 24VDC | 24VDC |
| Rated current(open) | 6.5A | 5A |
| Air flow(open) | 42M3/H | 37M3/H |
| Motor Speed(open) | 24000 RPM | 22000RPM |
| | | |
| Rated current(closed) | 2.3A | 2.2A |
| Air pressure(closed) | 8kPa | 6.8kPa |
| Motor Speed(closed) | 28500 RPM | 26500RPM |
| | | |
| Motor pole | 4 | 4 |
| Phase Resistance | 0.62 Ohm | 0.66 Ohm |
| Noise | 80 dBA | 80 dBA |
| Ball Bearing | NMB High-speed ball bearing |
| Driving motor | 3 phase brushless DC motor |
| Hall sensor angle | 120° |
| RPM-Pulse | 1 Hz=30rpm |
| Winding type | Delta |
| Winding withstand Voltage | 500VDC (1 minute ) |
| Insulation Class | Class F |
| Blower weight | 400 g |
| IP grade | IP54 |
| Operation temperature | -20℃~ 50℃ |
| Service life (under 40℃) | 10000 hours |
3: Products performance
OWB9250 24V DC brushless blower commutating period
OWB9250 brushless DC blower Performance curves
4: Overall dimensions
5: Wiring diagram
| Pin 4 | Red | +5V |
| Pin 5 | Purple | Hall A |
| Pin 6 | Green | Hall B |
| Pin 7 | Grey | Hall C |
| Pin 8 | Black | GND |
| Pin 1 | Yellow | Motor phase A |
| Pin 2 | Blue | Motor phase B |
| Pin 3 | White | Motor phase C |
6: Attentions
1: Do not working under the max air pressure, the air flow is too small at max air pressure, and it's not safe for using.
2: Add a filter attach to the intake makes the blower bearing longer service life.
3: The correct rotation direction is CCW
4: Do not use the blower in High temperature ,high humidity, high magnetic fields
5: Please use suitable power supply for the blower.
FAQ:
Can you design a new blower fan if we give you target performance?
Yes, we offer ODM service for both blower fan and controller board
Can we connect this centrifugal air blower directly onto power source?
This blower fan is with BLDC motor inside and it needs a controller board to run.
What kind of power source shall we use to drive this blower fan?
Generally, our customers use 24vdc switching power supply or Li-on battery.
Do you also sell controller board for this blower fan?
Yes, we can supply adapted controller board for this blower fan.
How to change impeller speed if we use your controller board?
You can use 0~5v or PWM to change speed. Our standard controller board is also with a
potentiometer to change speed conveniently.
What is the MTTF of this centrifugal air blower?
MTTF of this centrifugal air blower is 20,000+ hours under 25 C degree.
Product Tags:
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