UMI-0055EE-B1 Unitronics | 5.5 kW 3 Phase 380-480VAC | VSD

Why Choose the Unitronics UMI-0055EE-B1 Variable Speed Drive?

The Unitronics UMI-0055EE-B1 is a high-performance AC variable frequency drive (VFD) designed for precise speed and torque control of three-phase motors in demanding industrial environments. As part of the advanced Unitronics UMI-B1 EU series, it is engineered for OEM machine builders and automation engineers requiring reliability, efficiency and seamless system integration.

This drive incorporates advanced sensorless vector control (SVC) and SVPWM technology, ensuring smooth motor operation, stable torque and reduced energy consumption. With integrated dynamic braking and a built-in C3 EMC filter, it delivers enhanced performance and reduced electrical interference in industrial systems.

With a rated output power of 5.5 kW and a three-phase 380–480 V AC supply, the UMI-0055EE-B1 is ideal for medium to heavy-duty machinery such as conveyors, compressors, pumps and processing equipment. Its robust construction and flexible mounting options make it suitable for installation in control panels or industrial enclosures.

Key Advantages

• High-performance variable frequency drive for industrial automation.
• 5.5 kW motor power rating for demanding applications.
• Three-phase 380–480 V AC input for industrial power systems.
• Integrated Safe Torque Off (STO) safety function (PLe, SIL3, Cat.3).
• Built-in dynamic braking for controlled stopping.
• Optimised motor control improves efficiency and machine reliability.

Key Features

• Unitronics UMI-B1 EU series.
• 5.5 kW (7.5 HP) rated output power.
• 14 A nominal output current.
• Three-phase 380–480 V AC input supply.
• Integrated Safe Torque Off (STO) functionality.
• Sensorless vector control (SVC) and SVPWM control modes.
• Built-in PID control and simple PLC functionality.
• Integrated C3 EMC filter and braking transistor.

Technical Specifications

• Manufacturer: Unitronics
• Series: UMI-B1 EU
• Model: UMI-0055EE-B1
• Product type: AC variable frequency drive
• Rated output power: 5.5 kW / 7.5 HP
• Rated output current: 14 A
• Input voltage: 380–440 V AC (typical 400–415 V)
• Input phases: 3-phase
• Frequency: 50 / 60 Hz (output 0–400 Hz)
• Overload capacity: 150% (21 A, 60 s), 180% (25.2 A, 10 s), 200% (28 A, 1 s)
• Protection rating: IP20
• Mounting type: Wall or flange mounting
• Communication: Modbus RTU (RS-485)
• Digital inputs: 4 programmable + 1 high-speed + 1 safety input
• Digital outputs: 2 relay outputs + 1 transistor output
• Analogue inputs: 0–10 V, 0–20 mA
• Analogue outputs: 2 × 0–10 V / 0–20 mA
• Cooling method: Forced air cooling
• Operating temperature: approx. -10 to +50 °C
• Dimensions (H × W × D): approx. 256 × 146 × 167 mm

Reliable Motor Control for Industrial Machinery

Variable frequency drives such as the Unitronics UMI-0055EE-B1 regulate motor speed by adjusting output voltage and frequency. This enables improved process precision, reduced mechanical wear and optimised energy efficiency across industrial systems.

The UMI-B1 series is designed for advanced automation environments, supporting both induction and permanent magnet motors. Its flexible programming, communication and monitoring features allow seamless integration into PLC and HMI-based control systems.

Typical Applications

• Industrial conveyors and material handling systems.
• Compressors and heavy-duty pump systems.
• Packaging and production machinery.
• Fans and HVAC equipment.
• Food and beverage processing lines.
• OEM automation systems and machine building.

Trusted by Machine Builders Worldwide

Unitronics UMI-B1 drives are widely trusted by automation engineers and OEM machine builders for delivering reliable motor control, efficient operation and seamless integration into modern industrial equipment.