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UMI-0550CU-B7 Unitronics | 55 kW 3 Phase 200-240 VAC | VSD
Unitronics UMI-0550CU-B7 variable frequency drive featuring 55 kW output power, 200-240 V AC three-phase input, Modbus RTU communication, advanced vector control and integrated Safe Torque Off functionality for industrial automation applications.
£3,361.86
Why Choose the Unitronics UMI-0550CU-B7 Variable Speed Drive?
The Unitronics UMI-0550CU-B7 is a high-capacity AC variable frequency drive (VFD) engineered for precise speed, torque and motor control in demanding industrial automation applications. As part of the advanced Unitronics UMI-B7 series, it combines powerful motor control, integrated safety functions and flexible communication options to support modern machine-building and process control requirements.
Featuring advanced control technologies including SVPWM, Sensorless Vector Control (SVC) and Closed-Loop Vector Control, the UMI-0550CU-B7 delivers excellent speed regulation, high starting torque and reliable performance under varying load conditions. Its expandable architecture supports communication, encoder and I/O expansion modules, allowing seamless integration into industrial automation systems.
With a rated output power of 55 kW (75 HP), an approximate output current of 200 A and operation from a three-phase 200–240 V AC supply, the UMI-0550CU-B7 is ideally suited to pumps, compressors, conveyors, HVAC equipment and heavy-duty industrial machinery. Integrated Safe Torque Off (STO) functionality enhances machine safety while reducing system complexity.
Key Advantages
- High-power 55 kW variable frequency drive for industrial motor control.
- Three-phase 200–240 V AC input suitable for low-voltage industrial installations.
- Integrated Safe Torque Off (STO) safety functionality.
- Advanced vector control algorithms for precise speed and torque regulation.
- Built-in Modbus RTU (RS-485) communication.
- Expandable architecture supporting communication, encoder and I/O modules.
- Supports both induction and permanent magnet synchronous motors.
Key Features
- Unitronics UMI-B7 variable frequency drive series.
- 55 kW / 75 HP rated output power.
- Approx. 200 A rated output current.
- Three-phase 200–240 V AC input supply.
- Integrated Safe Torque Off (STO).
- SVPWM, SVC and closed-loop vector control modes.
- Built-in Modbus RTU RS-485 communication.
- Optional Ethernet and fieldbus communication cards.
- Removable LCD keypad with setup wizard.
- Expandable communication, encoder and I/O architecture.
Efficient Motor Control for Industrial Systems
Variable frequency drives such as the Unitronics UMI-0550CU-B7 regulate motor speed by controlling output voltage and frequency. This allows industrial machinery to operate more efficiently, reduces energy consumption, minimises mechanical wear and improves overall process performance.
The UMI-B7 platform has been developed for integration into modern automation systems. Advanced control functionality, flexible communications and compatibility with both induction and permanent magnet motors make it a versatile solution for demanding industrial applications.
Typical Applications
- Industrial pumps and water treatment systems.
- HVAC fans and ventilation equipment.
- Conveyors and material handling systems.
- Compressors and process machinery.
- Manufacturing and production lines.
- OEM machine building and automation systems.
Technical Specifications
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| Power | 55 kW | |
|---|---|---|
| Current | 200 A | |
| Voltage | 240 V | |
| Phase | Three Phase | |
| IP Rating | IP20 | |
| EMC Filter | None | |
| Series | UMI-B7 | |
| Product type | AC variable frequency drive | |
| Rated output power | 55 kW / 75 HP | |
| Rated output current | Approx. 200 A | |
| Input voltage | 200–240 V AC | |
| Input phases | 3-phase | |
| Input frequency | 50 / 60 Hz (47–63 Hz) | |
| Output frequency | 0–400 Hz | |
| Control methods | SVPWM, sensorless vector control, closed-loop vector control | |
| Supported motors | Asynchronous induction motors and permanent magnet synchronous motors | |
| Overload capacity | 150% for 60 s, 180% for 10 s, 200% for 1 s | |
| Protection rating | IP20 | |
| Cooling method | Air cooling | |
| Mounting type | Flange, floor or wall mounting | |
| Dimensions (H × W × D) | Approx. 682 × 325 × 365 mm | |
| Safety function | Safe Torque Off (STO) |
Frequently Asked Questions
What is the Unitronics UMI-0550CU-B7 used for?
This drive controls the speed and torque of three-phase AC motors in industrial automation, process control and machinery applications.
What motor power does this drive support?
The UMI-0550CU-B7 is rated for motors up to 55 kW (75 HP).
What supply voltage does the drive require?
The drive operates from a three-phase 200–240 V AC power supply.
Does the drive include safety features?
Yes, it includes integrated Safe Torque Off (STO) functionality to help prevent unintended motor operation.
Can the drive be integrated into automation systems?
Yes, it includes Modbus RTU communication and supports optional communication expansion modules for integration with PLCs and industrial networks.
Trusted by Industrial Automation Professionals
Unitronics UMI-B7 variable frequency drives are trusted by automation engineers and machine builders worldwide for delivering reliable motor control, flexible integration and efficient operation across a wide range of industrial applications.
