Danfoss VLT 6011 HVAC Frequency Drive

Description

This is a Danfoss VLT 6000 series frequency converter, model VLT6011, part number 178B0520. It is an obsolete but highly reliable drive designed specifically for HVAC applications such as pumps, fans, and compressors. With a power rating of 7.5 kW (10 HP) and a voltage range of 380-460V, it offers precise and efficient motor speed control, contributing to significant energy savings and optimized system performance. The rugged IP54 / NEMA 12 enclosure protects it from dust and water splashes, making it suitable for various industrial environments.

Specifications

• Manufacturer: Danfoss
• Series: VLT 6000 HVAC
• Model: VLT6011 (VLT6011HT4C54STR3DLF10A00C0)
• Part Number: 178B0520
• Power Rating: 7.5 kW / 10 HP
• Input Voltage: 3 x 380-460V AC, 50/60Hz
• Input Current: 15A / 14A
• Output Voltage: 3 x 0-Uin
• Output Current: 16A / 14A
• Output Frequency: 0-1000Hz
• Enclosure: IP54 / NEMA 12

Label Info

• T/C: VLT6011HT4C54STR3DLF10A00C0
• C/N: 178B0520
• S/N: 011539G115

Application

Ideal for controlling motors in HVAC systems, including centrifugal pumps, fans, blowers, and compressors, to improve energy efficiency and process control.

Country of Origin

Made in Denmark

CO2 Impact

By purchasing this pre-owned drive, you are helping to avoid the emission of approximately 280 kg of CO2, which would have been generated during the production of a new unit. This is comparable to the emissions from driving a car for over 1400 kilometers.

Availability

This is an obsolete item, but it is available from our stock as a reliable spare part for existing installations. Order now from PLC2Day for expert support and fast delivery.

FAQ

Can this VLT 6000 be used with a standard induction motor, or does it require a special vector-duty motor?

The VLT 6000 series is designed to work excellently with standard asynchronous (induction) motors. It operates on a V/Hz (Voltage/Frequency) control principle, which is ideal for common HVAC applications like pumps and fans without requiring a special motor.

For the VLT 6000 series, the electrolytic DC-link capacitors generally have a design life of 8-10 years under normal operating conditions. The cooling fan is also a component with a finite lifespan, typically around 40,000 to 60,000 operating hours. It's recommended to check these components during preventive maintenance, especially on older units.

Yes, the Local Control Panel (LCP) is removable. It can be mounted remotely using an optional kit. The LCP has a copy function that allows you to upload the entire parameter set from one drive and download it to another identical drive, which is extremely useful for commissioning multiple units.

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Last Update: Friday, March 13, 2026