GD27-0R4G-S2-B INVT frequency inverter GD27-0R4G-S2-B

GD27-0R4G-S2-B — single-phase frequency inverter from INVT GD27 series, rated at 0.4 kW active power capacity (nominal output current 2.5 A) for electrical grids with 1-phase 220V supply voltage. The VFD supports sensorless vector control (SVC) and scalar V/F control, delivering smooth motor speed adjustments and dynamic torque response. The device features IP20 protection standard, integrated EMC filter, and built-in Modbus RTU RS-485 communication interface.

Typical Applications:

• Industrial conveyors, mixers, extruders, and packaging machine drive systems.
• HVAC fans and automated pump systems utilizing built-in PID controller for constant pressure hold.

Please Note: Perform motor autotuning (rotating or static) before first system startup. When installing motor cables longer than 50 meters, an output reactor (du/dt filter) is highly recommended to protect motor winding isolation from voltage spikes.

INVT GD27 — Positioning

In the industrial and municipal sectors, the INVT Goodrive27 (including specialized GD270 models) variable frequency drive series represents a smart generation of drives designed specifically for water supply, heating, and ventilation (HVAC) systems. The drive combines the capabilities of classic scalar V/F control and energy-efficient Sensorless Vector Control (SVC), providing stable startup and precise speed regulation for both asynchronous induction motors (AM) and high-efficiency permanent magnet synchronous motors (PMSM). Thanks to its slim book-style design, the units can be mounted side-by-side with zero clearance, saving up to 50% of valuable cabinet space.

Key Industrial Applications for INVT GD27

• Multi-Pump Booster Stations: Integrated specialized algorithms enable cascade control of up to 4 pumps without an external PLC, ensuring smooth rotation of units for uniform wear and elimination of water hammer.
• Heating, Ventilation, and Air Conditioning (HVAC): Precise control of heavy-duty intake and exhaust fans, and automatic integration into building management networks via the built-in RS-485 Modbus RTU interface or optional BACnet/Profinet communication cards.
• Municipal Water Utility and Sewage Stations: Utilizing the built-in intelligent ECO energy-saving algorithm, the drive optimizes power consumption under partial loads, while the anti-clogging function automatically clears pump impeller obstructions.

What Differentiates INVT GD27 from Competitors

Compared to competitors, the GD27 series offers excellent book-style compactness and highly flexible braking resistor integration in low-power ratings, whereas Danfoss FC-102 requires a significantly higher initial investment in expansion modules.

When INVT GD27 is NOT Suitable

• For mechanisms with ultra-heavy startup conditions and high dynamic requirements (such as crane hoisting mechanisms, industrial crushers, or heavy centrifuges), we recommend utilizing high-dynamic vector control series with closed-loop support, such as INVT GD350 or INVT GD200A.

Our Practical Experience with INVT GD27

We regularly integrate the GD27/GD270 series into pump control cabinets for municipal utility companies in Ukraine. The drives exhibit high resilience to grid voltage fluctuations common in domestic power networks, operating reliably across a wide input window (-15% to +10%). When configuring vector mode for PMSM motors, the autotuning function accurately measures winding parameters even with the load connected, significantly simplifying commissioning work on-site.