The smoke prevention and exhaust fan control box mainly controls the start and stop of the fan. The fan can be operated by manual and automatic and on-site buttons in the control room, and the operation of the equipment can be fed back through the smoke prevention and exhaust intelligent control panel. The fan control box can run at low speed during normal ventilation, start the fan locally, or start the high-speed button to make the fan run at high speed. In the automatic state, accept the signal of the fire alarm center, and the fan will be changed from low speed to high speed operation. If the fan stops working, the fan can be stopped at high speed directly in the fire center, and the signal will be returned to the fire center at the same time. Usually the low-speed gear is connected to the intelligent control system, usually used as an exhaust fan, and the high-speed gear is connected to the fire control system (DC24V elimination control interface). Low-speed control loop to achieve rapid exhaust ventilation.

Features of fan control box

 1. It has a fire valve control interface, which can cut off the power supply of the fire fan according to the environmental requirements to prevent the subsequent electrical spread of the fire;

2. It can be divided into single power supply and dual power supply mode;

3. It has convenient installation methods: wall-mounted installation and vertical installation and other installation methods;

4. Fire fan control box/smoke prevention fan control box has traditional button type and controller type, with automatic and manual control;

5. It can be divided into control single-speed fan and double-speed fan;

6. It has automatic protection functions such as output overcurrent, phase loss, open circuit, overload and power loss, which can reliably protect the motor;

7. Remote automatic control, external elimination control system and intelligent control system, and feedback of high and low speed running status signals of the fan at the same time;

8. Small size, convenient installation, simple operation, suitable for various fan start-up needs;