We use cookies to make your experience better. To comply with the new e-Privacy directive, we need to ask for your consent to set the cookies. Learn more.
UMI-0550EE-B1 Unitronics | 55 kW 3 Phase 380-480VAC | VSD
MPN: UMI-0550EE-B1
Alt. SKU: UMI0550EEB1
Special Price
£2,916.70
£2,430.58
Regular Price
£3,431.40
Why Choose the Unitronics UMI-0550EE-B1 Variable Frequency Drive?
The Unitronics UMI-0550EE-B1 is a high-capacity variable frequency drive (VFD) from the UMI-B1 EU series designed for heavy-duty industrial motor control. Rated at 55 kW (75 HP), the inverter operates from a 380–440 V AC three-phase supply, providing reliable speed regulation and stable torque for large industrial machinery such as pumps, compressors, conveyors and processing equipment.
The drive utilises advanced inverter technologies including sensorless vector control (SVC) and space vector PWM (SVPWM), enabling smooth acceleration, high torque performance and accurate speed regulation under varying load conditions. These technologies help improve motor efficiency while maintaining consistent operation in demanding industrial environments.
Designed for integration with modern automation systems, the UMI-0550EE-B1 includes RS-485 communication with Modbus RTU, allowing direct connection to PLC and HMI systems. The UMI-B1 series also includes heavy-duty overload capability and comprehensive protection functions, ensuring reliable operation in critical automation applications.
Key Features
- 55 kW (75 HP) variable frequency drive for high-power industrial motor control.
- 380–440 V AC three phase input power supply.
- Output frequency range 0–400 Hz for flexible motor speed regulation.
- Sensorless vector control with SVPWM for stable torque and precise speed control.
- Heavy-duty overload capability up to 200% for short durations.
- Integrated RS-485 Modbus RTU communication for PLC and automation integration.
- Industrial design suitable for demanding automation systems.
- Built-in protection functions for safe motor and inverter operation.
Technical Specifications
- Manufacturer: Unitronics
- Series: UMI-B1 EU
- Model: UMI-0550EE-B1
- Product type: Variable frequency drive (VFD)
- Rated motor power: 55 kW (75 HP)
- Input voltage: 380–440 V AC
- Input phase: Three phase
- Output frequency range: 0–400 Hz
- Motor control methods: Sensorless vector control, V/F control
- Communication: RS-485 with Modbus RTU
- Overload capability: up to 200% for short duration
- Protection rating: IP20
- Cooling: Forced air cooling
- Operating temperature: −10 °C to +50 °C
- Mounting: Panel or cabinet mounting
Typical Applications
- Large conveyor and material handling systems.
- Industrial pumps, compressors and ventilation systems.
- Heavy manufacturing and process machinery.
- Packaging and production lines.
- Energy-efficient speed control of high-power AC motors.
Frequently Asked Questions
What is the UMI-0550EE-B1 used for?
This inverter controls the speed and torque of large three phase AC motors by adjusting the output frequency and voltage supplied to the motor.
What motor power can this drive control?
The UMI-0550EE-B1 is designed for motors up to 55 kW (75 HP).
What power supply does the inverter require?
The drive operates from a 380–440 V AC three phase power supply, commonly used in industrial power systems.
Does the drive support PLC communication?
Yes. The inverter includes RS-485 communication supporting Modbus RTU, enabling integration with PLC and industrial automation systems.
What protection features are included?
The drive includes protection functions such as overcurrent, overload, overvoltage, undervoltage and overheating protection to safeguard both the motor and the inverter.
Trusted by Automation Engineers
Unitronics UMI-B1 drives are widely used by machine builders and industrial engineers to deliver reliable motor control, energy efficiency and dependable performance in demanding automation environments.
| Manufacturer Part Number | UMI-0550EE-B1 |
|---|---|
| Communication | MODBUS RTU RS-485 |
| Height | 560mm |
| Width | 282mm |
| Depth | 238mm |
| Amperage | 115A |
| Number of analogue inputs | 1 x 0-10V/0-20mA, 1x 0-10V |
| Number of analogue outputs | 2 x 0-10V, 0-20mA |
| Brake - Safe-Stop | Safe Stop |
| Compliance | CE, cUL, TUV-SUD, UL |
| Control Method | SVPWM (Space Vector PWM), SVC (Sensorless Vector Control) |
| Coating PCB | Coated PCB |
| Control Panel | Removeable Keypad |
| Control Panel Included | Yes |
| Control Setting | Analog, Digital, Modbus, PID, Pulse |
| Cooling | Air Cooling |
| Number of digital inputs | 1 x 50kHz, 4 x 1kHz |
| Number of digital outputs | 1 x sink/source |
| Dynamic Breaking Unit | Optional |
| Filter | C3 Filter Built In |
| HP Rating | 75 |
| Input Phases | Three Phase |
| Input Frequency | 50/60Hz |
| Degree of protection (IP) | IP20 |
| KW Rating | 55kW |
| Mounting Options | Flange, Wall |
| Output Frequency | 400Hz |
| Overload Capacity 150% | 60 Seconds |
| Overload Capacity 180% | 10 Seconds |
| Overload Capacity 200% | 1 Second |
| Output Phases | Three phase |
| Supported Motors | Asynchronous Induction Motors, Three Phase Input |
| Voltage | 380/480VAC |
| VSD Range | Unitronics B1 |
| Manufacturer | Unitronics |
| Alternative Product SKU | UMI0550EEB1 |
Write Your Own Review
