24V DC Cooling Fan monitoring and protection

Although the "24V DC Cooling Fan" inverter motor has a high reliability, but it is still mechanical devices, in the long-term use, the speed may be reduced or stopped, so the best fan of running real-time monitoring, facilitate the timely detection of problems. Currently, "iphone下载雷竞技 " own alarm monitoring methods are two types of sensor and speed sensor, alarm sensors can use the fan speed is lower than the alarm signal is given when a certain threshold, and the speed signal output can be achieved Real-time monitoring of fan speeds. From the "iphone下载雷竞技 " alarm signal output circuit have "high" and "low" two states, meaning two levels represented generally in accordance with positive logic system, high indicates "failure" "Low" indicates "normal."