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Two-speed fan control box Two-speed intelligent fan control box
Key attributes
Industry-specific attributes
Place of Origin
chengdu, China
Brand Name
JHL
Model Number
JHL/FJ
Product Name
Intelligent fan control box
Application
Security and Protection,fire control,Intelligent patrol
Power supply
AC 380V, controller voltage 12V
Communication mode
2-way RS485, photoelectric isolation
Switching acquisition
high, medium and low flooding signal input
fan control
2-way, single-channel support for the maximum power: 11kw-75KW
Communication protocol
meet the standard Modbus_RTU protocol
Motor Compatibility
Power Rating: The control box is designed to be compatible with fans of different power ratings. For small - scale applications, it can control fans with a power of a few hundred watts, while for industrial or large - scale ventilation systems, it can handle fans with power ratings up to several kilowatts.
Motor Type: It can be used with different types of motors, such as induction motors and permanent - magnet motors. The control box should be able to provide the appropriate electrical signals and control logic to ensure proper operation of the motor at both speeds.
Two - Speed Operation
Speed Settings: The control box allows the fan to operate at two distinct speeds. The low - speed setting is usually around 30% - 60% of the high - speed setting. For example, if the high - speed is 1500 RPM (revolutions per minute), the low - speed may be set at 600 - 900 RPM.
Speed Regulation Accuracy: The accuracy of speed regulation is an important parameter. It is typically within ± 1% - ± 3% of the set speed. This ensures that the fan operates at a stable speed at both the low - speed and high - speed settings.
Intelligent Control Parameters
Sensor Integration
Temperature Sensors: If the control box is equipped with temperature sensors, the temperature measurement range is usually from - 20°C to 80°C, with an accuracy of ± 0.5°C - ± 1°C. The control box can use the temperature data to automatically switch between the two fan speeds. For example, when the temperature exceeds a pre - set high threshold, it switches the fan to high - speed; when the temperature drops below a low threshold, it switches to low - speed.
Humidity Sensors: For control boxes with humidity sensors, the humidity measurement range is typically from 0% - 100% relative humidity, with an accuracy of ± 3% - ± 5%. Similar to temperature control, the fan speed can be adjusted based on the humidity level.
Programmability
Set - point Adjustment: Users can adjust various set - points, such as the temperature or humidity thresholds for speed switching, the duration of operation at each speed, and the time intervals for automatic control. The set - points can usually be adjusted with a resolution of 0.1°C for temperature and 1% for humidity.
Control Logic Programming: Some advanced two - speed intelligent fan control boxes support programming of more complex control logic. This may include multi - stage speed control based on multiple environmental parameters, or time - based scheduling of fan operation.
Self - Diagnosis and Fault Detection
Fault Detection Range: The control box can detect a variety of faults, including motor over - current, over - temperature, sensor malfunctions, and abnormal electrical connections.
Alarm Output: When a fault is detected, the control box can provide an alarm output. This can be in the form of a visual indicator (such as an LED light) on the control box panel or an electrical signal that can be sent to a remote monitoring system.
Sichuan Jinhuili Electric Co., Ltd. is specialized in distribution automation, power quality, energy efficiency management of the main products and services; The products include high and low voltage power distribution equipment, uninterruptible UPS power supply, emergency power supply, DC power supply, complete sets of intelligent control equipment, solar photovoltaic power generation, energy storage management, operation and maintenance and other comprehensive automation.
The company is located in Chengdu, Sichuan Province, China, covers an area of more than 10,000 square meters, has a large number of outstanding management personnel, senior engineers and power professional and technical personnel, has been awarded by the government and departments "civilized private enterprise", advanced private enterprise, scientific and technological innovation enterprise, contract-respecting, trustworthy units and other honorary titles.
Company Details
Bronze Gleitlager
,
Bronze Sleeve Bushings
and
Graphite Plugged Bushings
from Quality China Factory
Business Type:
Manufacturer
Year Established:
2019
Total Annual:
10000000-30000000
Employee Number:
150~165
Ecer Certification：
Verified Supplier
Sichuan Jinhuili Electric Co., Ltd. is specialized in distribution automation, power quality, energy efficiency management of the main products and services; The products include high and low voltage power distribution equipment, uninterruptible UPS power supply, emergency power supply, DC power sup... Sichuan Jinhuili Electric Co., Ltd. is specialized in distribution automation, power quality, energy efficiency management of the main products and services; The products include high and low voltage power distribution equipment, uninterruptible UPS power supply, emergency power supply, DC power sup...
