GD270 Series VFD for Fan and Pump

High Energy Efficiency：Equipped with a new ECO algorithm, it saves about 8100kWh annually for a 4kW IE2 asynchronous motor under 40% load. It supports bypass function for power frequency operation and automatic sleep mode at low load, meeting the demand for "energy-saving VFD for fans and pumps".
Precise Control Performance：The speed ratio is 1:200 (SVC) for asynchronous motors and 1:20 (SVC) for synchronous motors, with a speed control accuracy of ±0.2%. It supports 16-step speed settings, suitable for "multi-step speed control VFD" scenarios.
Safety & Reliability：EU models have built-in STO function complying with EN ISO 13849-1 Cat.3 PL e and SIL3. The core PCB has a triple-protection coating, enabling stable operation at -10℃~50℃.
Flexible Configuration：It supports industrial buses like PROFINET, PROFIBUS-DP, and CANopen. DC reactors are optional for 11kW~355kW models, and output reactors are optional for models above 220kW, fitting "communicable VFD" needs.
Scenario Adaptability：It can switch up to 8 pumps, with pipeline water hammer prevention and pipe break detection. The fan speed tracking startup reduces equipment impact, ensuring stable operation.

Input Voltage AC 3PH 380V~480V, allowable voltage fluctuation: -15%~+10%
Input Frequency 50Hz/60Hz, allowable range: 47~63Hz
Output Frequency 0~400Hz
Control Mode Space vector control, sensorless vector control (SVC)
Motor Type Asynchronous motor (AM), permanent magnet synchronous motor (SM)
Speed Ratio Asynchronous motor: 1:200 (SVC); Synchronous motor: 1:20 (SVC)
Speed Control Accuracy ±0.2% (SVC mode)
Overload Capacity 110% rated current for 1min, 1 overload allowed every 5min
Safety Function STO (EU models only), complying with EN ISO 13849-1 Cat.3 PL e, EN IEC 62061 SIL3
Environmental Adaptability Operating temp: -10℃~50℃ (derating required above 40℃), humidity <95%RH (no condensation), pollution degree 2
Protection Level IP20 (≤200kW); IP00 (>200kW)
Installation Method Wall-mounted (1.5~250kW), floor-mounted (1.5~132kW), flange-mounted (220~500kW)
Analog I/O 2 inputs (AI1: 0~10V/0~20mA; AI2: -10~+10V); 2 outputs (0~10V/0~20mA)
Communication Expansion Supports PROFINET, PROFIBUS-DP, CANopen (with optional expansion cards)

HVAC Systems：The ECO algorithm reduces operation costs. 16-step speed adapts to different air volume demands day and night. The anti-frost function prevents equipment damage from freezing, ensuring stable indoor temperature and humidity.
Municipal Water Supply：It can switch up to 8 pumps. The soft water filling design avoids water hammer, and pipe break detection stops operation timely to save water. PID control maintains constant water pressure.
Sewage Treatment：Periodic motor forward/reverse rotation + sleep realizes self-cleaning of sludge, reducing manual maintenance. Instant power failure non-stop operation ensures continuous sewage treatment.
Farm Irrigation：Automatic sleep mode saves energy at low load. It adapts to -10℃~50℃ outdoor temperature differences, and stable water pressure control ensures uniform irrigation, improving crop survival rate.

Frequent Questions

1. How many pumps can it control at most?

It can control up to 8 pumps, supporting cyclic/fixed VFD pump modes, requiring an additional relay card.
2. Is STO function only for EU models? How to activate it?

Only EU models support it. Remove the jumper between H1/H2 and +24V, and connect external NC contacts, complying with SIL3.
3. What to note when ambient temperature exceeds 40℃?

Derating is required above 40℃. The core PCB has a triple-protection coating for harsh conditions.
4. Can it expand communication functions? Which protocols are supported?

It can expand via SLOT1/SLOT2, supporting PROFINET, PROFIBUS-DP, and CANopen.

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