W2G110-AK43-31: Rugged DC Cooling Solution
The W2G110-AK43-31 is a heavy-duty compact axial fan designed by ebm-papst for harsh industrial environments where standard plastic fans might fail. What sets this 119mm fan apart is its die-cast aluminum housing, which provides superior structural integrity and electromagnetic shielding. Operating on 24 VDC, this fan is a staple in telecommunications, railway technology, and automation cabinets where a low-voltage DC bus is available. The impeller is typically made of fiberglass-reinforced plastic or sheet steel (depending on the specific revision), driven by a brushless DC motor that offers long service life and high efficiency.
Technical Specifications
- Dimensions: 119 x 119 x 38 mm.
- Nominal Voltage: 24 VDC (Operating range 12-28 VDC).
- Housing Material: Die-cast aluminum.
- Motor Type: Brushless DC motor.
- Connection: Wire leads or flat plugs.
- Protection: Electronic protection against reverse polarity and locked rotor.
Maintenance & Engineering Insights
Lifecycle State: Active. This model is chosen for its robustness. Diagnosis: Unlike AC fans, if a DC fan like this stops, first check the 24V power supply output. Often, the issue is not the fan but a tripped breaker on the DC rail. If the voltage is present (24V) and the fan doesn’t spin, the internal electronics may have suffered a surge. Installation Advice: The aluminum housing allows for tighter torquing of mounting screws compared to plastic frames. Ensure the polarity is correct during wiring (Red +, Blue – typically), although the unit has built-in protection. Compatibility: Perfectly suited for Siemens SITOP power supply environments. It can be monitored via digital inputs on a PLC if the specific sub-version includes a tachometer output (checking the third wire is recommended).
| Metric | Performance Data |
|---|---|
| Nominal Speed | 2800 – 3250 RPM |
| Airflow | 160 – 180 m³/h |
| Power Consumption | 5 – 7 W |
| Operating Temp | -20°C to +75°C |
Why Aluminum Housing?
The metal housing acts as a heat sink for the motor electronics, allowing for operation in higher ambient temperatures than equivalent plastic models.
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