Rotary Screw Compressors With Sigma Frequency Control

Rotary Screw Compressors With Sigma Frequency Control

SM SFC to HSD SFC series compressors from Kaeser are exceptionally efficient variable-speed rotary screw compressors. SM, SK and ASK SFC models use Kaeser’s minimal maintenance V-belt drive system, which features automatic belt tensioning to ensure optimum power transmission. Larger models from the ASD SFC upwards are equipped with the speed-controlled 1:1 direct drive. The large, slow-speed KAESER airends with energy-saving SIGMA PROFILE rotors provide outstanding performance across the entire control range. Every Kaeser SFC compressor model is capable of 100 percent duty cycles without any increase in maintenance requirement.

Sigma Control 2
The control unit features an easy to read display and durable input keys. All relevant information can be viewed at a glance and user-friendliness is further enhanced by the logical menu structure coupled with the ability to display data in any one of 30 selectable languages.

Optimised Specific Power
If installed, it is the frequency-controlled compressor that runs for longer than any other unit within the compressed air station. KAESER SFC models are therefore designed with maximum efficiency and low-speed operation in mind. This saves energy, extends service life and enhances reliability.

Maximum Dependability Eeven At High Ambient Temperatures
Contained in its own separately cooled cabinet, the generously sized SFC module enables perfect performance at ambient temperatures of up to +45°C.

Entire Package EMC Certified
The electro-magnetic compatibility (EMC) of components and of the complete machine has been tested and certified in accordance with all applicable regulations.

Soft Start With No Damaging Current Spikes
The soft rise in motor starting current from zero to full load without current spikes leads to an almost unlimited motor starting frequency (the number of possible motor starts within a given time period without overheating occurring). The continuously variable acceleration and deceleration significantly reduces component stress.

Technical Specification
Series: SM SFC to HSD SFC
Motor Power: 7.5 to 515 kW
Delivery: 0.39 to 89 m³/min
Standard Pressure: 5.5 to 15 bar(g)
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