This document applies to the following problem manifestations: 1. When the trigger is not pulled, the trigger signal is always on. 2. When the safe lock does not touch the workpiece, the safe lock is always on. 3. When there is no above actions, the light will be automatically emitted. The analysis of causes and solutions: By unplugging the signal pin of the signal interface one, if there is a [Safe Lock Signal] and [Trigger Button Signal] with one or both lights, replace the main control board directly. If you unplugging them and it is not lit, it means that the line is short-circuited. In this situation, please measure the corresponding on-off by the multimeter. The specific circuit logic can be referred to as the safe lockandtrigger button. Root causes: Since the main function of the device is that the protection voltage is too large, and that will lead to the internal device of the motherboard is burned out and the voltage here will not exceed the supply voltage. Therefore, it is likely that the customer's on-site environment leads to strong static electricity or instantaneous high voltage to break through it. Recommendations and improvements: 1.It is recommended that the customers keep the welding platform a good grounded connection and the machine shell a good grounded connection. If it is necessary, please dig the pile separately. 2.The welding torch should be placed in the designated position when not in use, do not place it arbitrarily. 3.Wearing static protective equipment has a certain protective effect on individuals and machines.

Manifestation: The light appear strong at first, and then become weaken or light is going to become weaken gradually, which results in it is unable to fuse or sparks generated at the copper nozzle. The analysis of causes: Usually it is that the welding gun lenses to be damaged, including but not limited to protective mirrors, focusing, collimation and reflection. Any one or more of these damages can cause this to happen. Replace the protective lens and look at the focus at first, and then check the reflection and collimation. And in the end to replace the damaged lens. Also check the laser fiber tip for whether it is dirty or be damaged or not. Analysis of lens damage: 1. Classification of damage: the abnormal of motor swing caused by interference, or the red light is too biased to be adjusted. And the sealing ring will burn out together commonly in this situation. 2. Convex damage to the lens: it is generally common to be seen in pollution, such as unprotected when replacing, and the form is a punctate black spot. 3. Damage to the plane of the lens: due to laser diffuse reflection, most of them are caused by reflection, forming a focal point on the lens, and burning out the coating. In this situation, the form is white spots. Convex surfaces also have this form, and the formation principle is consistent with it. Trouble solutions: Replace the damaged lens, please check the replacement plan in the structural installation How to avoid it in the later time: In handheld welding, the highest replacement frequency is related to the lens. As to the cause of damage, please take the following precautions. 1. Use original lenses 2. Pay attention to prevent from pollution when in the replacing process. 3. Do not weld vertically as much as possible, especially when in the process of welding highly reflective materials. 4. Damages of Protective lens:precautions 5. Replace the damaged protective glasses in time.

Manifestation: In a short period of time, the protective lens is damaged and there is a burning spot, and the light-emitting surface of the protective lens is dotted with damaged spots, showing black or white black spots The analysis of causes: Due to the influence of process/method/setting, etc., the anti-slag causes damage, and very few are abnormal laser light output Solution: ①Appropriately increase the air pressure. Usually, the flow rate is not less than 15, and the pressure is not less than 0.3-0.6Mpa ②When welding, try to weld the welding gun and the plate at 30-70°, not vertical ③Set the parameters as much as possible to slowly rise and fall, such as the on/off delay of 200-500ms, the on/off optical power 20%, and the on/off progressive time 200-300ms, as shown in the figure, you cannot set 0 ④When welding aluminum and galvanized sheets, this material will damage the lens more easily than other materials, so the minimum power should be used for welding. ⑤The quality of the protective mirror also determines the durability of its use. It is recommended to use the original lens ⑥At high power, the loss of the lens will increase compared to low power, which is an uncontrollable range ⑦When the above cannot be handled, you can replace the F200 focusing lens + lengthened and wide scale tube to reduce splashes (additional purchase is required)

Performance: Rear wire blocking between wire feeding wheels Cause analysis: Due to the high resistance after this structure, it is impossible to feed wire and get stuck in the wire feeding wheel. The resistance problem should be solved Solution ① Improvement of wire feeding structure The longer the wire feed pipe is, the greater the resistance will be. Therefore, use a shorter wire feed pipe as far as possible, such as 0.8 welding wire matching 3M wire feed pipe During welding, straighten the wire feed pipe as far as possible without distortion In addition, when the wire is blocked, properly leak out part of the wire feed pipe ② Improvement of welding wire material For stainless steel and iron wire, there is almost no need to optimize, but for aluminum wire, we recommend using at least 5 series of aluminum alloy welding wire, which will have higher hardness ③ If the above improvement is still stuck, replace the wire feed pipe

Operation logic: The wire feeder is connected to the 5 / 6 pin of the signal interface 2 of the control box through the two core plug signal wire at the tail. When the system is running, the 5 / 6 pin is connected after the built-in relay on the main board of the control box is pulled in, and the wire feeder starts to work (i.e. the 5 / 6 pin is controlled on and off) In case of outgassing but no wire feeding: Let's first decide whether there is a problem with the control of the wire feeder Click [manual wire feeding] on the front panel of the wire feeder to check whether the wire feeding wheel is running 1. The wire feeder does not work, and there is a problem with the wire feeder itself 2. Continue to operate the wire feeder according to the following operation According to its operation logic, we first short-circuit the signal line of the wire feeder, pull it out from pin 5 / 6 and then short-circuit the signal line (not pin 5 / 6) Then there are two situations 1. If the wire feeder operates, it can be determined that the wire feeder is OK and the 5 / 6 pin of the system control board is wrong 2. If the wire feeder does not operate, it can be judged that the signal line is open circuit and the signal line can be checked The following is the first case. The problem of pin 5 / 6 of signal interface 2 of control board is handled Operation logic of control card: When the system is running, the 3 / 4 pin of signal interface 2 outputs 24V, the 5 / 6 pin is connected, and the two groups of signals are synchronized (excluding setting delay) The wire feeding signal (pin 5 / 6) has a built-in jump cap (J10 * j11). By default, the jump cap uses a relay to control the on-off at 1 / 2 (as shown in the figure below). If the jump cap is at 2 / 3, MOS is used to control the on-off Exception handling scheme: If the system is running, after the 3 / 4 pin outputs 24V (i.e. air outlet state), but the 5 / 6 pin is blocked, try to put the jump cap at 2 / 3 and choose to use MOS control Please note that if MOS control is used, the two signal lines are distinguished by ± 2. Therefore, if you use MOS control and there is an abnormality (direct wire feeding or no wire feeding), replace the signal lines When the MOS cannot be used, the external relay (DC24V) can be used to control the pull in or replace the board The signal sent by the external 4 / 4 pin of the relay is defined as follows （The normally open pin of relay is used for two core signal of wire feeder）

Manifestation: In the welding state, the exit is intermittent and the wire feed or outlet is intermittent. The analysis of causes: The trigger button signal or the safety lock signal is lost solution： According to its operating logic, only when the [Laser Trigger Signal] and [Safe Lock Signal] are valid, the light will be emitted (the laser state is normal), and at the same time, no alarm will appear on the home page. When the light is intermittent, check the above two signals to observe which one will disappear by the monitoring page, and do the next step of monitoring for the disappeared signals. If both signals are present ① The safety lock signal disappears Put the safe lock clip directly on the graduated tube to see if it is normal, if normal, it may be the cause of the plate, some plates such as rust or oil will cause poor contact. ②The trigger button signal disappears Try to press and hold the trigger button firmly, if the signal flashes, there may be a bad trigger button contact, and you should replace the trigger button (new and old models are not universal) ③Signal loss cannot be detected Because the refresh rate of the detection page is much lower than the chip sampling interval, when the circuit is disconnected in an instant and it returns to normal immediately, and in this situation the detection page cannot be seen. In this case, you should short circuit the 5/6 pin of the signal interface one, so that it can make safety locker effective. And then to weld in a normal way to see if it will appear.

Definition of wiring between display and main control board V/G: provide 24V power supply, where V represents 24V + and G represents 0V R/T: transmission, transmission and reception of data without cross First check the communication between the display and the main control board, and then check whether the programs of the display and the main control board match. Check the system version through the monitoring page. If three groups of numbers are completely displayed and the authorization duration is displayed, there is no problem with communication, as shown in the figure below: In case of communication failure, check whether the wiring is correct and whether the interface is loose If there is no problem in communication and the data cannot be operated or saved, the program version may be wrong. Take photos of the monitoring interface and send it to our after-sales service. Method of brushing program.‍

Manifestation: In the welding state, after pulling the trigger, the air is sent to the wire, and the red light is normally visible, but the laser cannot be emitted Cause analysis: Logically, when the gas is out, the outgoing signal will also be sent out. When the laser does not receive the outgoing signal (port failure) or the laser has a problem Solution； (1) First exclude the presence of an alarm in the laser itself (2) Where it involves normal after shutdown and restart, most of them may be resettable alarms of the laser itself, it is recommended to contact the laser manufacturer or monitor the internal alarm (3) For whether the laser has received a trigger signal, two schemes to test The simplest thing is to link the laser's monitoring software to see which signal is missing. In addition, the signal port of the signal interface three can be measured Typically, the laser emits light only when it receives an enable/PWM/analog signal, so we can measure whether the signal is emitted in the operating state (Please be sure to measure each port of signal interface 3 and unplug the laser wire in working condition when air output) Enable signal: 2/4 pin output 24V voltage; PWM modulation demodulation signal: 6/7 pin   Output voltage 24V; Analog signal: 4/5 pin equal proportional voltage, 10V at full power; If the above signal is normal and still does not emit light, contact the laser manufacturer to deal with it; If one of the enable/PWM has no voltage, it can be used together, such as PWM connecting the enable signal pin; If there is no voltage in the analog quantity and the red light is a line, return to the factory to repair or replace the motherboard; If there is no voltage in the analog, and the red light is a point, check whether the 15V switching power supply ± is reversed.