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Laser power supply is a high-performance automatic ignition constant current power supply, which is divided into two types: continuous laser power supply and pulse laser power supply. Below, the editor will introduce the maintenance methods of laser power supply and the maintenance techniques for CO2 laser power supply not emitting light.   There are several maintenance methods for laser power supply:   1. Replace key components method. Generally, it does not emit light. You can first replace the amplifier tube 460 or 450, and then consider replacing the high-voltage package.   2. Voltage detection method.   3. Electric observation method.   Maintenance tips for CO2 laser power supply not emitting light:   1. First, power on and observe the fault point of the laser power supply.   2. Firstly, determine whether the cooling fan is running: if the fan is running, it indicates that there is a fault in the high-voltage circuit; On the contrary, if the fan does not rotate, it indicates that there is a malfunction in the control circuit.   3. When the fan is running, check if there is voltage output from the 220V power supply after rectification, and then check if the power amplifier tube is burned out. Check if the voltage after power amplification is normal, which is a DC pulse of 400-600V. If it is normal, it can be concluded that there is a fault in the high-voltage package and it should be replaced.   4. When the fan is not running, check whether the voltage after bridge rectification and voltage stabilization is normal, and then check whether the voltage after transformation is normal. Usually, the control chip is prone to malfunctions.   The above are the maintenance methods for laser power supply and the maintenance tips for CO2 non emission, hoping to help everyone.

Laser engraving machine is a type of laser marking machine. Mastering methods and careful maintenance are necessary in use and maintenance to ensure that the machine can play its role more stably. The laser engraving machine should have a well grounded laser power supply, and the machine bed should have good grounding protection. The ground wire should be a dedicated ground wire with a resistance of less than 4 Ω. The necessity of grounding is:   1. It can ensure the normal operation of the laser power supply,   2. Can extend the service life of laser tubes,   3. It can prevent external interference from causing machine tool jumping,   4. Prevent accidental circuit damage caused by high-voltage discharge.   The ambient temperature and humidity should be within the range of 5-35 ℃. It should be noted that if used in environments below freezing point, the following measures should be taken:   To prevent the circulating water inside the laser tube from freezing, the water should be drained after shutdown;   When starting up, the laser current needs to be preheated for more than 5 minutes before it can work. In cloudy, rainy and humid environments, the laser power supply needs to be preheated for a longer time. Only after removing moisture can high voltage be applied to prevent breakdown of the high voltage circuit.

1) Connection of laser tubes: The high voltage (HV+) of the laser power supply must be connected to the anode (total reflection end) of the carbon dioxide laser tube. The current circuit of the laser power supply is connected to the cathode (laser output end) of the carbon dioxide laser tube through an ammeter (or directly). (2) Connection of control signals: As shown in Figure 1 (or Figure 2), reliably connect the control signal lines to the control terminals of the laser power supply. (3) Input of control signals: As shown in Figure 3, by inputting the DAC signal and TTL signal output by the external computer into the laser power supply as required, the laser tube can be controlled to output laser as required. (4) Voltage selection: The laser power supply requires an input of 220VAC/50Hz, and special orders should be made for 110VAC. (5) Additional features: The laser power supply has a set of protective switches that can be connected in series for water protection and protection when the casing is opened. Notes: 1. The laser tube must be cooled with water during operation! 2. The high-voltage output terminal must not be open circuit! (The positive and negative terminals of the high-voltage output must be correctly connected to the positive and negative terminals of the laser.) 3. A discharge resistor has been added to the power supply, and the residual voltage can generally be discharged within two seconds after a power outage. But for safety reasons, attention should still be paid to electric shock! (Both ends of the high-voltage output must meet the insulation safety requirements for a 40KV high-voltage suspension.) 4. The laser power supply must use a three hole socket with a grounding terminal. The casing must be strictly grounded! To avoid electric shock.

In recent years, the application of laser cutting machine power supply in our production and daily life has become increasingly widespread. Perhaps it is not very common or well understood, and the power control mode of laser cutting machines generally refers to the method of stable voltage output. From the sampling quantity, it can be divided into current mode and voltage mode, and from the transfer function, it can be divided into PID and Bang Bang control. Below, the editor will give you a specific introduction to the control mode of the laser cutting machine power supply.   1. The voltage mode is a control mode that samples the output voltage and provides negative feedback.   2. The dual voltage mode is a control mode that samples the output voltage and input voltage for negative feedback.   3. Current mode is a control mode that samples input current and output voltage for negative feedback.   4. A first-order or second-order PID control system is constructed using a sawtooth wave generator and a compensation network for PID control.   5. Bang Bang control generally only uses hysteresis control systems constructed by comparators, also known as hysteresis mode.   The above is about the control mode of the laser cutting machine power supply. Jinan Zhenyu Electronics Co., Ltd. is dedicated to serving you