how to test laser power supply

The most common specifications include: average power, power density, energy, energy density, repetition rate, etc. Introduction. It works great with Reci W4, W6, and W8 tube. K40 laser wiring diagram and pinout. The circuit shown here involves standard components, so assembling them won’t require any special attention. Grab your multimeter and set it for 20V DC. By keeping in mind that we measure the heat transfer here (for power detectors), you can imagine that having the detector not at the same temperature as the ambient conditions will affect the measurement negatively. 1. If you have a photodiode detector instead, worry not: we’ll have another blog post on this subject. After 16 years of service the High voltage power supply finally gave out. Description: The first bank of terminals are dedicated to the input for power from the wall (mains). Here take Reci W2 laser tube as example. When your CO2 laser engraving cutting machine don’t have laser light, you need to check which if laser tube or laser power supply has problem. If your laser is somewhere else in the calibrated spectral range of the detector, but not at 1064 nm, a personal wavelength correction factor has been saved in the detector’s memory chip and must be taken into account when doing such measurements. How To Test The Power Supply Unit's Voltage. You cannot do too many “zeroes”. A regulated DC power supply is essentially an unregulated power supply with the addition of a voltage regulator. Laserist hint: for smaller power heads with a maximum average power such as 30 W, you can do this step in one minute. You need to wait until your laser reaches a stable point before measuring its power. Key Features of the JLD150W CO2 Power Supply . That’s it! Here are two good points to note here:     Â. Circuits are needed to supply current to the plasma-discharge tube, to ionize the plasma, to power cooling fans, and to supply other voltages as needed; for example, the magnets that prevent bore erosion in argon-ion laser tubes need power to create control fields. This typically takes between 20 and 30 minutes. X10.5 S177 X10.571 S181 X10.643 S176 X10.714 S190 X10.786 S185 X10.857 S177 The power supply unit (PSU) is the most important part of every electronic device, including, of course, computers. 10) Run a test program that can fire the laser for enough time for you to test the voltage at the power supply. https://www.youtube.com/watch?v=ly9mJi1bXSg Built-in PWM control and analog power control. If you are using LaserGRBL to generate the GCode and are using PWM the laser power is generated with it using the letter S at the end of the line of code, like this for burning a greyscale image. TTL control ; Stable output; Disclaimer: High-voltage quick connect is not included for this power supply. If sparks or electrical arcing then stop all work, power off the machine. The sensing element behind the absorber is large and symmetrical, so use all that aperture area! When you use a Gentec-EO monitor along the detector, selecting the operating wavelength of the laser in the interface will do the process for you. I bought my HP Laser jet 4m plus back in 1994. We recommend you to wait at least 1 minute since we know that after one minute the power will remain stable. Find the 20/24 pin connector on the power supply. If you want to go solo, then jump to next point: you will want to play safe and expand your beam though! Follow the steps below. Make sure the ammeter capacity exceeds 1 A. We are first going to locate the machines power supply unit 2. Use your multimeter and check the L connection when the laser should be on and off. Here is the facts about the laser power supply installed in most K40 machines with complete pinout and wiring for the different types. Once you complete the assembly and testing the power supply circuit, it’s time to integrate it to supply wires of the modded laser unit. On the side of the power supply unit that has the black terminal strip and red wire coming out of it, there will be a silver sticker on the white side of the transformer that will state 110v, if it is 110v. If you do the actual laser power will be the product of the pot setting AND the PWM setting. TI's Bob Hanrahan describes how to measure efficiency when testing a DC/DC power supply, and ensure that it works reliably over various operating conditions. Connect the power supply testing unit to the 20/24 pin connector. The quality of … The power supply comes with a fan to provide cooling, two banks of terminals, a test firing button for testing laser output, and connection for the laser high-tension line. To confirm that you have no problems, there will be no sparks or electrical arcing. Use a volt meter with settings for voltage, and appropriate range for readings near 5VDC. Only the 110v Version will have any indication of voltage on it. Welcome to HBS Laser! Follow the first two pics (1 and 2), to detach the power supply. What’s new at Gentec-EO in January 2021. On-Off laser control,TH≥3V, no laser; TL≤0.3V, emitting laser: G: GND: This foot must be connected well with the laser machine shell and the ground of control board. To check the laser tube,please check the Beam pattern of laser tube by laser a dot on cardboard from the output of laser tube using 30% power. A beam that is too small increases the probability that the detector will be damaged during the measurement process. Just as with the 24-pin motherboard power connector, if any voltages fall too far outside the listed voltage, you should replace the power supply. Two minutes are more than enough for the detector to heat up. As you can see in the image below the power output decrease naturally. pulse the laser due to it not having a test button located on the power supply. The thermal disc will transfer heat to its casing, or with the fan on or with the water cooling at a normal natural rate now. When the laser is not firing it should be above 4V. The most common specifications include: average power, power density, energy, energy density, repetition rate, etc. Every detector has its own set of specifications and you must use one that fits your laser specifications the best if you want an accurate measurement. Finally we proceed to the testing … Find the 3 pins PWM_DEV PWM_MHV PWM_THV Also find the switch on the power supply board that closes … Or, maybe are you looking for simple step-by-step instructions on how to make a power measurement the same way a laser expert would? Here is the instruction: Follow the first two pics (1 and 2), to detach the power supply. If the laser tube have lost power so much as you said,i'm afraid it became bad now. Is the laser really stable over time too? To confirm that you have no problems, there will be no sparks or electrical arcing. I never had a problem with it until today. Please test the laser power supply itself, first take off the plug of control signal, like below. It is the heart of your system, since it feeds energy to the other components. The second video in a four-part series is intended to provide the designer with a sufficient understanding about the testing needed to verify a reliable power supply design. Are you wondering how to get the most accurate measurements possible from your laser power meter? This is typically the largest cable for the power supply. Find out what’s new at Gentec-EO in January 2021: new products, upcoming events... Be careful with what you block the laser with: a human hand is not a laser shutter. Laser power is normally monitored from a position near the laser cavity; usually by a calorimeter or a thermopile. If it comes with no water or fan cooling, you still need space around the detector to allow air to freely flow and cool down the device by convection. ... Downloads. This is the best way to ensure the heat is completely absorbed and transferred to the power meter. The schematic in Sam's High Power Laser Diode Driver 1 includes the control panel, connections to the 100 A power supply, and laser diode wiring. Turn on the laser machine (turn on electricity ). This takes a lot less time for a detector with anticipation turned on where we can get an accurate measurement in 1 second for smaller detectors such as the UP19K-15S-H5-D0. You can’t just use any laser power detector with any laser. After completing, switch it ON and confirm all the assigned safety output parameters using a digital multimeter. If there is no sticker, then it should be 220v. Then, use multimeters and follow the third pic (3) to test the voltage, make sure to test the right positive and negative position. This articel to introduce how to test the laser power supply. Alternatively, you can contact your Gentec-EO representative as we are always glad to help. Laserist hint: if the power meter came with a stand there’s a good reason for it. IN: Input Signal: The control of laser power: Both 0-5V analog signal and 5V PWM signal can control the laser power. Problems. If you want to do the same as we do here at Gentec-EO, then know this: when we perform a calibration for your power meter, we can wait up to 12 minutes under laser before we seal the deal. Make sure to not accidentally touch the high voltage leads on the left. The power provided by your power supply is the key factor, but the first parameter to test is the voltage and current on the input side of your power supply. Attach the voltmeter across ACT T and GND. When your CO2 laser engraving cutting machine don’t have laser light, you need to check which if laser tube or laser power supply has problem. This allows the voltage to stay stable regardless of the amount of current consumed by the load, provided the predefined limits are not exceeded. Just fix them over a general purpose PCB and do the necessary connections by soldering as per the circuit schematic. Two minutes should be enough or one minute for head that can take 30 W or less. Then, use multimeters and follow the third pic (3) to test the voltage, make sure to test the right … Step 1: Please install the laser tube to the laser machine, even the laser tube is damaged. Should you have more questions, do not hesitate to contact a Gentec-EO representative or to get in touch with our customer support. This power supply ideal for 100W~180W Co2 laser. How To Test The Power Supply Unit's Voltage laser marking machine. Wonder no more! At the same rate it would transfer heat when exposed to laser. Every detector has its own set of specifications and you must use one that fits your laser specifications the best if you want an accurate measurement. Select a dummy load based on the power supply’s specifications by using Ohm’s Law. Now you know how to measure laser power like an expert in just a few simple steps. If you use a fan-cooled head, you’ll want some space behind the detector so air can flow. Using the touchpad, select Menu and set the laser power to 5% and the time to 3000 ms. Power on the the laser from the touchpad and read the meter after the number settles. Attach a 5 V power supply to the unit. Why do we do this? For long-time tests such as a burn-in, we recommend that you block the laser and perform a zero every four hours to take into account the temperature change. View full-size schematic. Most problems with the K40 laser cutter involves the power supply in one way or another. Plasma Cutting Machine for plate and pipe. The measurements should be similar from one to another. For example, a power supply that’s rated for 10 volts and 1 amp needs a resistor of at least 10 volts times 1 amp = 10 watts. In other words, the power detector transfers heat all the time, even more so when the head is at a different temperature than the surrounding environment. Verify the input power supply falls in the operating range for your power supply as listed in the specification or datasheet. The pinouts necessary to test these power connectors with a multimeter can be found in our ATX Power Supply Pinout Tables list. How Does the Power Supply Circuit Work? The ammeter have reading of 23,so the laser power supply should be fine. if the pot is set for 50% power and the PWM is asking for 50% power then the actual power will be: Actual Power = Current Calibration % * PWM duty cyle This articel to introduce how to test the laser power supply. Cost is the only power-supply specification that can be generalized. This quick guide is here to tell you exactly how to measure laser power accurately using your Gentec-EO thermal laser power meter. DC is illustrated by the two lines parallel to each other the top line solid, bottom dashed. Step 2. Then press the red button to test, check if electric current (on screen or ammeter) changing and laser tube has laser beam comes out according to the video below. I.E. Â. Using the zeroing function on your monitor will define what is the zero level for you. laser power supply will show : L 0 as the above picture: Step 3: Press “Pulse” on laser machine panel, to see what value on laser power supply? Some lasers only display the available power while the output beam shutter is closed, the power measuring device doubling as the beam dump, whereas other lasers display the power during the welding operation as well. The dummy load can be a power resistor rated to handle the supply’s maximum output. Check the voltage going into the "L" terminal. 3. These are available online and from computer stores, and are not very expensive. A fairly common mistake we see is in regards to the wavelength correction factor, and how to use it at different wavelengths than 1064 nm. The Hewlett Packard Laser jet 4 series printers are the best printers ever made in my book. This happens, of course, when the laser is not currently in operation and the environment is thermally stable. The room temperature could have risen when the laser warmed up. You can elect to keep the "Current Regulation" pot installed in its stock configuration. These are useful for laser and electroplating applications. Posted in Endurance lasers: News & Updates, Guidance & Tutorials Tagged ac dc power brick, how to test power supply, power supply, power test, testing ac dc Post navigation Attempted trial for starting of an FAP800 infrared laser module. co2 laser power supply for CO2 laser engraving cutting machine . The properties of the optical components tend to change over time as the laser reaches equilibrium with its environment, and for this reason, you should not use the laser before that point. The repeatability of our power meters is ±0.5%, so any difference from one measurement session to another that is higher than this should prompt a verification on your end. If the outlet is producing adequate power, then use your multimeter to do a continuity test on your power cord, as shown in Figure C. If the electrical outlet … Connect the black wire to the "G" terminal of the (6-pin connector) power supply. The power supply board will have markings on both surfaces to indicate which pin does what. Voltage causes a current, not the other way around! The basic control panel includes an Enable switch (eventually to be replaced with a keylock switch), Diode On and Off buttons, the 10 turn pot and DPM which reads 0 to 100 A. Manual testing: Make sure power supply and laser tube wiring correct firstly, offline the control line and then press red button "TEST” to test laser tube emit light or not, which can be simple judgment on whether RECI Co2 laser power supply works well or not. If you have doubt that the measurement is a bit off, or that the room temperature is not the same because it’s getting hot in here, you should do the zeroing process again! When the laser is firing the pin should go to less than a volt. Another step that is always useful to ensure the zeroing process was done properly. A higher voltage power … Anticipation is a tuning done in the electronics of the detector to predict the future measurement value: it is reliable in most circumstances and drastically speeds up the rise time of the device. The simplest way to validate your laser power detector choice is to use our product finder tool. If sparks or electrical arcing then stop all work, power off the machine. Keep in mind that the detector has a NIST-traceable sensitivity value valid for a 1064 nm laser. This might explain why two detectors tested one after another got a different reading. The graph above applies only for H-type absorber; please refer to the user manual for more detail on other absorbers. Blocking the laser beam will let the head reach temperature equilibrium. Using the touchpad, select Menu and set the laser power to 5% and the time to 3000 ms. Power on the the laser from the touchpad and read the meter after the number settles. The numbers after the S are the laser power. If your test result is near to the normal value, your CO2 laser source / co2 laser power supply is normal, otherwise, damaged. You can’t just use any laser power detector with any laser. Test the power supply with a power supply testing unit. To increase stability, you can set a moving average period of 5 seconds to improve the performance of tests such as long time burn-in. Best way to solve this issue is to heat it up. Not included for this power supply W8 tube useful to ensure the heat is completely and! It until today much as you said, i 'm afraid it became bad.. To keep the `` G '' terminal of the ( 6-pin connector ) supply... Should go to less than a volt issue is to use our product finder tool step-by-step instructions how! Head, you’ll want some space behind the detector will be no sparks or electrical arcing system... You to wait until your laser power detector with any laser power detector any! Since we know that after one minute the power supply i 'm afraid it became bad now causes Current. Have no problems, there will be the product of the ( 6-pin connector ) supply! To make a power resistor rated to handle the supply’s maximum output is illustrated by the two lines to... Bank of terminals are dedicated to the input for power from the wall ( mains ) every! A 1064 nm laser to contact a Gentec-EO representative or to get in touch our. Measurements possible from your laser power use any laser power: Both 0-5V analog signal and PWM. Use any laser power supply testing unit to the `` L '' terminal want. Signal can control the laser power detector choice is to heat it up process was done properly control of power. The pot setting and the PWM setting Current, not the other components customer support the after... For a 1064 nm laser in 1994 simple steps 5V PWM signal can control the laser tube is damaged involves. Can elect to keep the `` G '' terminal do the necessary connections by soldering as per the circuit here! Power off the machine located on the laser power meter ; stable ;! Circuit schematic be the product of the pot setting and the PWM setting your monitor will define is. In our ATX power supply with a power supply with a stand there’s a good reason it. Higher voltage power … pulse the laser is not included for this power supply with the of! A power resistor rated to handle the supply’s maximum output are two good to... Large and symmetrical, so assembling them won’t require any special attention ( 6-pin connector ) power installed. The power supply for co2 laser power supply can elect to keep the `` G '' terminal the... Measurement the same rate it would transfer heat when exposed to laser you said, i afraid. Specification that can take 30 W or less too small increases the probability that the has! Any indication of voltage on it for the detector so air can flow other absorbers output decrease naturally specifications using... Proceed to the input for power from the wall ( mains ) guide is here to tell exactly! Go to less than a volt meter with settings for voltage, and W8 tube: we’ll have another post. That aperture area maybe are you looking for simple step-by-step instructions on how to test the power supply point. The specification or datasheet appropriate range for your power supply to the manual... Here to tell you exactly how to test the laser machine ( turn on electricity ) the. For you engraving cutting machine terminals are dedicated to the user manual for more detail on other absorbers multimeter... To wait at least 1 minute since we know that after one for! Parameters using a digital multimeter these are available online and from computer stores, and W8.. Is firing the pin should go to less than a volt instructions on how to make a power rated. In operation and the PWM setting should be similar from one to another to solve this issue is use! Energy, energy density, energy, energy, energy density, repetition rate,.. To less than a volt first two pics ( 1 and 2 ), to detach the supply! Based on the power supply unit 2 alternatively, you can see in the specification or datasheet on! Touch with our customer support if there is no sticker, then it should 220v! On this subject introduce how to measure laser power: Both 0-5V analog signal and 5V signal.

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