The TrolMaster VFD-1 is a dedicated Variable Frequency Drive Station that connects compatible industrial fan inverters directly to the Hydro-X Pro environmental controller. It provides stepless, automated fan-speed regulation based on live temperature, humidity, or scheduled conditions, allowing large exhaust, recirculation, and dehumidification fans to operate at the required speed instead of simply switching ON/OFF. The VFD-1 is bus-powered through RJ12, so it does not require a separate power supply.
• SKU: VFD-1
• Manufacturer: TrolMaster
• Compatible Controller: Hydro-X Pro
• Power Supply: 12 VDC / 0.2A, bus-powered
• Controller Connection: RJ12 phone cable
• Control Type: Variable-frequency / stepless fan-speed control
• Speed Adjustment: Hydro-X Pro controls fan speed as a percentage of the configured maximum frequency
• Control Conditions: Temperature, humidity, or schedule-based conditions
• Compatible Inverters: TECO E510, DELTA ME300, ABB ACS355
• ABB ACS355 Requirement: FMBA-01 communication module required
• Maximum Frequency: Configurable through VFD-1 for compatible TECO and DELTA drives; ABB ACS355 maximum frequency is configured at the inverter
• Display: Built-in LCD with local menu navigation
• Addressing: Individually addressed through Hydro-X Pro
• Firmware Updates: Micro-SD card, ≤32GB
• Operating Temperature: 32–122°F (0–50°C)
• Operating Humidity: <90% RH, non-condensing
• External Power Supply: Not required
• Typical Applications: Large exhaust fans, recirculation fans, dehumidification air handlers, and industrial ventilation systems
• Package Contents: 1× VFD-1 station
• Warranty: 3 years
Key Advantage: The VFD-1 brings industrial VFD-driven fans directly into Hydro-X Pro automation, allowing airflow to continuously track actual environmental requirements rather than relying on fixed-speed ON/OFF cycling. This is particularly useful for large commercial ventilation systems where maintaining stable conditions and avoiding unnecessary full-speed operation are important.