Product Description:

The VLT 5011 is a frequency converter manufactured by Danfoss for the VLT 5000 Frequency Converters series. It modulates three-phase mains voltage so standard induction motors can run at variable speeds, making it suitable for pumps, conveyors, and general machinery in automated plants. The converter supports open-loop or closed-loop motor control and is designed for cabinet installation in industrial environments.

The drive delivers a typical shaft output of 7.5 kW, matching medium-frame motors used in HVAC systems or light process applications. Overall conversion efficiency reaches 0.96, so only a small fraction of the input power is lost as heat. A true power factor of 0.90 keeps reactive current low, easing the load on upstream breakers and busbars. The unit tolerates a supply voltage imbalance of ±2.0%, maintaining stable output without nuisance trips when the phases are slightly unequal. The system response time is 3 ms, allowing the control loop to react rapidly to speed references from a PLC. The open-loop speed range is 1:100, and two relay outputs provide run-status or fault signals. Power, motor, and 24 V auxiliary connections accept 4 mm² conductors, simplifying wiring with common ferrules and terminals.

High starting demands are supported by a sustained torque reserve of 160% for 1 minute, while brief accelerations can draw up to 180% for 0.5 seconds to overcome static friction. The inverter can withstand prospective fault currents up to 100,000 A without internal damage when protected by the correct upstream devices. Speed commands are resolved to ±0.003 Hz, permitting fine adjustments in low-speed applications. A 24 V control circuit is protected by a 6 A prefuse and limited to 2 V DC ripple. The circuit is wired through a dedicated 4 mm² conductor pair to help keep logic power stable during line disturbances.