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1. What is a connector?
2. Xiaomi 400G Kitchen Water Purifier Mainboard Interface Definition
The Xiaomi 400G Kitchen Water Purifier Mainboard interface is mainly divided into five categories: power supply, waterway control, filter monitoring, sensors, and communication. The details of different models may vary slightly, and need to be confirmed in conjunction with the specific product manual..
1. Power interface 1 DC input interface: usually labeled as DC IN , with a voltage of 24V/360mA (some models are 12V), used to connect external power adapters and provide working power for the motherboard.
2. Power output interface: labeled as DC OUT, it outputs stable voltage to loads such as water pumps and solenoid valves, paying attention to positive and negative polarity (some interfaces have fail safe design).
II. Waterway Control Interface 1 High pressure switch interface: labeled as HP SW , connect the high pressure switch, detect the pipeline pressure, and trigger the shutdown when the pressure reaches the fast draft mountain standard to prevent overflow.
2. Low pressure switch interface: labeled as LP SW, connect the low pressure switch, and trigger the protection shutdown when the inlet pressure is too low (such as<0.05MPa) to avoid the water pump from idling.
3. Electromagnetic valve interface: • Inlet solenoid valve (IN SOL): controls the raw water to enter the RO membrane;
; FLUSH SOL: Control the flushing of the RO membrane to extend the lifespan of the filter element; • Waste Water Solenoid Valve (WASTE SOL): regulates the proportion of wastewater, and some models have combination interfaces.4. Booster Pump Interface: labeled as PUMP , connected to R
III. Filter element monitoring interface 1 RO membrane filter interface: labeled as RO , some models have a RO TDS sub interface to monitor the TDS values before and after the RO membrane and determine the filter life
2. Pre filter interface: • PP (PP cotton), GAC (activated carbon), CTO (compressed activated carbon), some models monitor water flux through a FLOW METER (flowmeter) to assist in determining filter blockage
3. Post filter interface: labeled as POST (post activated carbon allowance), some models are integrated into the RO membrane monitoring circuit.
IV. Sensors and Auxiliary Interfaces 1 TDS sensor interface: labeled as TDS, monitoring the TDS value of pure water production, displayed on the body or APP
2. Temperature sensor interface: labeled as TEMP , detecting the inlet water temperature (suitable temperature for Xiaomi water purifiers is 5-38 ℃), triggering protection in case of abnormal temperature
3. Leakage sensor interface: labeled as LEAK, connected to the bottom leakage sensor of the body, automatically stops and alarms when leakage is detected.
Fifth, Communication and Display Interface 1 WiFi module interface: labeled as WIFI , connected to WiFi module to achieve remote control of APP (such as Xiaomi Mi Home APP)
2. Display screen interface: labeled as LCD or OLED, connected to the body display screen, displaying information such as filter life and TDS value
3. Button interface: labeled as KEY , connected to physical buttons on the machine (such as reset button and flush button). Attention: The interface definition should be based on the offici
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