What are the reasons for the barrier gate not recognizing and lifting the bar?
2 Answers
The reasons for the barrier gate not recognizing and lifting the bar are as follows: Fuse: Check if the fuse is burnt out. If the fuse is blown, a comprehensive inspection is required. Wiring: Unplug the underground cable connector in the guard room and inspect the red, white, and yellow wires of the motor to check for intermittent short circuits between the lines. Motor: For the barrier motor, only the red and yellow wires should be connected, while the white wire should not be connected to either. Check if the motor is overheating. If it is, it indicates that the motor's thermal protection has caused it to stop, preventing it from opening or closing. If the motor is not overheating, check if the 20UF starting capacitor has failed.
The issue of the barrier gate not recognizing and failing to lift can be caused by several factors. If the sensor is covered with dust or dirt, it cannot accurately detect vehicles. I often observe this scenario in parking lots, especially after rain or during dusty weather when the occurrence rate is high. A malfunction in the control system's circuit board is another major cause, such as aging or short circuits that prevent signals from being transmitted, rendering the entire barrier immobile. Mechanical issues, like the barrier getting stuck in the track or motor damage, are more common in high-traffic areas. I've witnessed barriers getting stuck due to insufficient lubrication. Additionally, input device failures, such as dead remote control batteries or malfunctioning card readers, as well as external interference like power outages or strong electromagnetic environments, can all trigger the problem. When troubleshooting, first try cleaning the sensor surface. If that doesn’t work, contact a professional for inspection. Regular maintenance can effectively prevent such annoying occurrences.
