GSE NexControl 32A AC/EC (230V EU) CO₂ Fan Controller

Multifunction controller for CO₂, ventilation and lighting

The GSE NexControl 32A AC/EC 230V EU is a multifunctional electronic control unit for climate control in grow rooms, indoor greenhouses and cultivation environments. It integrates AC and EC ventilation control, CO₂ dosing, lighting management and temperature and humidity monitoring into a single device. It features four programmable outputs, two 16A power supply lines and dedicated environmental sensors, enabling the automation of various pieces of equipment via independent parameters for day and night cycles.

Integrated microclimate management with ventilation and CO₂ dosing

The NexControl system automatically regulates the operation of exhaust and supply fans based on values detected by the sensors, modulating their speed to maintain temperature and humidity within the set ranges. It supports traditional adjustable AC fans and EC motors with 0–5V, 0–10V or PWM control signals. The negative pressure control allows an air flow to be maintained that is predominantly directed into the growing environment, helping to limit the spread of odours. Day and night setpoints, together with hysteresis values, allow air exchange to be adapted to the climatic conditions of the grow room.

Automatic CO₂ control allows the dosage to be programmed during the photoperiod, coordinating gas injection with the ventilation phases to minimise its loss through the extractor fans. The control unit also manages lighting via a dimmable signal, with programmable timings, dawn and dusk simulation, and automatic reduction of light intensity in the event of high temperatures. The four configurable sockets allow for the connection of additional equipment for heating, cooling, humidification, dehumidification, timing, or control of a CO₂ solenoid valve. The interface, featuring a display and rotary knob, allows users to view environmental values, adjust settings and display any alarms.

Technical specifications

• Model: NexControl 32A AC/EC
• Power supply: 230V / 50Hz
• Total electrical capacity: 32A, distributed across 2 independent 16A circuits
• Maximum total power: approximately 7360W at 230V, with resistive load
• Programmable outputs: 4, of which 2 are variable and 2 are relay-based ON/OFF
• Variable output 1: minimum 200W, maximum 10A (2300W, cos φ = 1)
• Variable output 2: minimum 200W, maximum 10A (2300W, cos φ = 1)
• Output 3 ON/OFF: maximum 10A (2300W, cos φ = 1)
• Output 4 ON/OFF: maximum 10A (2300W, cos φ = 1)
• Limit for each pair of outputs: 16A in total
• AC fan control: speed regulation via phase-cut control (TRIAC), generally for single-speed extractor fans
• EC fan control: dedicated outputs for supply and extract air, with 0–5V, 0–10V or PWM signals depending on the configuration
• Ventilation control: minimum and maximum speeds, temperature, humidity and negative pressure control
• Day/night management: independent climate setpoints
• CO₂ control: automatic dosing with concentration setting
• Lighting control: 0–10V or PWM dimming, timers and dawn/dusk simulation
• Lighting thermal protection: reduction in brightness and switch-off when configured thresholds are reached
• Programmable socket functions: heating, cooling, humidification, dehumidification, timer and CO₂ solenoid valve control
• Timer: up to 24 programmable intervals
• Alarms: configurable thresholds for temperature, humidity and CO₂ concentration
• Connectivity: integrated ESP32 Wi-Fi module; IoT functionality provided by firmware version 2.0
• Planned IoT integration: TCP/IP REST API, MQTT and Matter
• Protection rating: IP54
• Housing dimensions: 120×180×80mm (W×H×D)
• Control unit dimensions: 150×210×110 mm (W×H×D)
• Weight: 3.3 kg

CO₂, temperature, humidity and light

The detection system includes a combined sensor for CO₂, temperature, humidity and light, used to monitor environmental conditions and automatically activate climate control functions. The DS18B20 external temperature sensor also allows for independent measurements, even in applications requiring a humidity-resistant probe. The detected parameters can be used to control the programmable outputs, set action thresholds and trigger alarms.

• Environmental sensor: CO₂, temperature, humidity and light
• Environmental sensor power supply: 5V
• CO₂ measurement range: 400–5000ppm
• CO₂ accuracy: ±(40ppm + 5% of reading)
• Environmental sensor temperature range: -10°C to +60°C
• Environmental sensor temperature accuracy: ±0.8°C
• Relative humidity accuracy: ±5% RH
• External temperature sensor: DS18B20
• External sensor power supply: 3–5.5V
• External sensor measurement range: -55°C to +125°C
• External sensor accuracy: ±0.5°C within the range from -10°C to +85°C
• External sensor resolution: 9–12 bits

Compatibility with Can-Fan and Prima Klima EC fans

The GSE NexControl 32A AC/EC can also control EC fans from other manufacturers, including Can-Fan and Prima Klima, using the appropriate connection cables available separately. For Can-Fan fans, a cable with a 4-pin 3.5mm stereo jack is provided, whilst for compatible Prima Klima models, a cable with an RJ45 connector is available. These connections allow the control unit to electronically regulate the fans’ speed via 0–10V or PWM signals, without directly interfering with their power supply. Before connecting, it is necessary to check the compatibility of the EC model and ensure the electrical contacts match.

Specifications

Attachments

Schema Cavo Jack Can-Fan

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Schema Cavo RJ45 PrimaKlima

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Manuale Utente IT GSE NexControl

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User Manual EN GSE NexControl

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