Overview
This BLDC controller platform from Versa Drives is intended for ventilators and small HVAC air-moving units that require efficient, variable-speed operation. Typical applications include energy-recovery ventilators (ERV/HRV), small air-handling units, inline duct fans, and compact blowers used in commercial and light-industrial buildings.
The controller is designed for 230 V BLDC motors, delivering high efficiency, precise speed control, and reliable operation in continuous-duty environments. It can be offered as a standard controller or adapted as a customised platform to match your blower, enclosure constraints, and control interface.
Key Features
- High-efficiency BLDC drive for ventilators and small HVAC blowers
- Wide input voltage range suitable for typical 230 V, 50 Hz single-phase supplies
- Sensorless FOC control for smooth torque and low acoustic noise
- Stable low-speed operation to support energy-saving ventilation modes
- Analog or digital speed command options to interface with building controllers / thermostats
- Programmable soft-start and ramp profiles to reduce mechanical stress and noise
- Integrated protections: under-voltage, over-voltage, over-current, overload, and locked rotor
- Compact controller design enabling integration inside ventilator or AHU housings
- Designed with reference to IEC 61800-3 and IEC 61800-5 when used as part of a compliant system
Applications
- Heat recovery / energy recovery ventilators (HRV / ERV)
- Small air-handling units and compact duct blowers
- Ventilation modules for modular cleanrooms, labs, and medical spaces (subject to system certification)
- Commercial and institutional ventilation where variable speed and energy savings are important
- Replacement of AC induction-based controls with BLDC drives for efficiency upgrade
Technical Specifications
| Input supply | 180–265 V AC, 50 Hz (single phase) |
|---|---|
| Motor type | 3-phase BLDC blower / ventilator motor |
| Typical motor power range | Up to a few hundred watts class (exact rating configurable per OEM design) |
| Control method | Sensorless FOC (field-oriented control) |
| Speed command | Analog input (0–10 V or potentiometer) and/or digital I/O (as per custom design) |
| Protections | Under-voltage, Over-voltage, Over-current, Overload, Locked rotor |
| User indication | LED fault indication (patterns configurable in firmware) |
| Operating temperature | 0 to 50 °C (controller), depending on enclosure cooling |
| Intended standards | IEC 61800-3, IEC 61800-5 (system-level compliance during OEM integration) |
Enquiry Note
If you are interested, please share a few lines about your product, motor rating and supply voltage. We will review your requirement, map it to the closest Versa motor–drive platform and get back to you with next steps.
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