In recent years, more and more attention has been paid to the application of lighting and outdoor landscape for the purpose of beautifying urban landscape; With its unique advantages, LED point light source can not only be used for decoration, but also be combined into lines for contour lighting, but also can be combined into large pixel screen in array distribution, and play all kinds of video animation effects synchronously online. It has become a main product in lighting projects; LED point light source will always encounter more or less faults in practical use. Now let me introduce some common fault phenomena and analysis solutions of LED point light source in detail.
Fault I: after power on, the controller fault light (error) flashes, the point light source is not on, and there is no animation effect output?
Answer: generally, this situation is because the controller does not read the card correctly and does not output effective control program. The reasons may be:
(1). The SD card is empty and there is no effect file
(2). SD card program file name error
(3). The SD card was not formatted as required before copying the effect file
(4). The effect file in SD card does not match the model of lamp chip and controller, so the manufacturer should be contacted to make the effect file again
(5). Replace the SD card with a new one and then conduct the test to eliminate the possibility of SD card failure
Fault II: after power on, the indicator light of the controller is normal and there is signal output, but the point light source has no effect change?
A: there are generally the following reasons for this:
(1). Check whether the signal line of the lamp is correctly connected with the controller
(2). The signal of the external control lamp has an in / out direction. Check whether the control signal enters from the signal end of the first lamp
(3). Check the effect file *. In the SD card Is the selected model of LED consistent with the chip used in the current lamp
(4). The lamp and controller must be grounded together, that is, the ground wire GND of the lamp must be connected with the ground wire GND of the controller
Fault III: after the controller is connected to the lamp, the effect changes, but the lamp flashes, and the indicator light of the controller displays normally?)
Answer: (1) The ground wire between the controller and the lamp is not connected
(2). The power supply voltage of lamps is insufficient
(3). The effect made in the SD card is wrong. The lamp chip selected during the effect is inconsistent with the chip of the actual lamp
(4). The distance from the controller to the head lamp is far (distance > 10m), and the signal transmission is unstable
Fault IV: after power on, the controller and some front lamps work normally. Starting from a certain lamp, the rear lamps are not normal?
Answer: in this case, some of the lamps behind fail to receive signals normally. The reasons are usually as follows:
(1). If the IC of individual lamps fails or the front and rear signal lines of the lamp are damaged, generally replace the first lamp that does not light at the abnormal position or the lamp in front of it
(2). When writing the program, the number of point light sources is less (for example, 9000 are actually used, and only 8000 are written in the program), so the latter part has no animation effect, so you need to contact the manufacturer to rewrite the program
Fault V: after power on, the controller works normally, and the position of lamps changes abnormally, which is different from the designed video picture effect?
A: this situation is caused by the inconsistency between the lighting sequence and the designed wiring diagram. It is necessary to adjust the lighting sequence and position according to the designed wiring diagram, or input the arrangement and wiring of the actual lighting into the computer to re program