Variable Frequency Drive – 11 kW, Three-Phase 380 V

Energy savings where they matter most

On an 11 kW fan running thousands of hours a year, every percent of speed reduction shows on the electricity bill. Power falls roughly with the cube of speed. In theory, an 11 kW fan running 4,000 hours a year at 80% speed can save up to about 20,000 kWh compared with full-speed operation. Actual savings depend on the installation and motor efficiency.

Precise control for large installations

The drive uses high-performance vector control, with stable torque even at low speed. Acceleration and deceleration ramps are adjustable, which suits the heavy impellers of large fans. Speed can follow duct pressure, CO₂ level or CO concentration through the analog inputs.

Automation integration

• Built-in RS485 Modbus; optional PROFINET, EtherCAT, CANopen, Modbus TCP, EtherNet/IP cards
• 8 NPN/PNP digital inputs, 2 analog inputs, analog output, open collector and programmable relay
• Optional remote LCD keypad
• 1.8 m³/min cooling fan with a removable cover for easy maintenance

Applications: large fans for underground car parks, air handling units, high-airflow roof fans, industrial centrifugal fans, supply and circulation pumps.

Technical specifications

FAQ

How much can I save with a drive on an 11 kW fan?
It depends on running hours and average speed. At 80% speed, absorbed power drops to about half. We can calculate the savings for your installation.

What protection should I install on the drive's supply?
Size the fuses or circuit breaker according to the drive manual, based on the 26 A input current.

Can it be installed next to other drives in the same cabinet?
Yes, keeping the ventilation clearances given in the manual. The drive has its own cooling fan.