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Covers voltage selection, installation, grounding, connections, high-voltage safety, cooling system, internal components, and environmental conditions.
Details the terminal block for connecting power supply to laser tube cathode and main power input.
Describes the terminal block for connecting the power supply to the engraver's control system.
The MYJG-40W Laser Power Supply is an essential component for laser engravers, designed to convert standard AC power into the high-voltage DC power required by a laser tube. This lightweight and compact power supply is engineered for ease of operation and high compatibility with a variety of 40W CO2 lasers. It connects directly to your laser system, eliminating the need for heat-generating heavy ballast resistance often found in similar devices. By ensuring quick operation and maximizing the performance of your laser device, this power supply contributes to extending its service life.
Before using the device, it is crucial to read the safety information carefully and keep the manual for future reference. A key safety feature is the input voltage switch located on the right side of the device. Users must ensure that the selected voltage matches their country's power supply to prevent damage. Installation, adjustment, or removal of the device should only be performed when all power to the engraver is turned off and unplugged. Proper grounding of the engraver is also paramount, and the device should only be used with engraving machines that employ a three-prong plug with a ground terminal. For optimal results and safety, using an EMI filter is recommended.
Careful attention must be paid to the proper connection of the positive and negative output terminals to the corresponding poles of the laser device. The high-voltage anode wire and its connections require extreme caution. To prevent sparking, the connection to the laser tube should be sealed.
Maintaining the CO2 laser's water cooling system is critical during operation. For systems equipped with a protective sensor in their water system, this power supply will automatically cut off power to the laser if a malfunction is detected in the sensor's circuit. In systems without such a circuit, users must manually ensure the proper operation of the water cooling system before each use.
Internally, the power supply includes a bleeder resistor that typically discharges harmlessly into the ground connection. However, users should not open the device without specialized training. Like the CO2 laser itself, the power supply should be operated in an environmentally-controlled room to ensure proper function. It is important not to use the device outside of its approved temperature and humidity ranges.
The power supply features multiple terminal banks for various connections. The first bank is a screw terminal block that connects the laser power supply to the laser tube's cathode and the main power input. For new installations, users will need to correctly install the wiring by placing the wires into the proper slots and tightening them with the built-in screws. If the device is a compatible replacement part, users can simply plug in their existing block. This bank includes terminals for Laser Return (L-), Ground Wire for the Mains & Case (FG), Neutral Wire to 110/220V Power (AC1), and Live Input from 110/220V Power (AC2).
The second and third terminal banks connect the laser power supply to the engraver's control system. Similar to the first bank, if an existing setup is in place, users can plug in their old screw terminal block directly. Otherwise, careful attention is needed to install the wiring correctly, and using separately colored wiring is recommended for clarity. These banks include terminals for Ground Wire for the Laser Trigger & Water System (G1), Line to the Laser Trigger, Water, & Other Systems (P), Active Low Pin1 (L1) for the engraver's test switch, Ground Wire for the Engraver Laser Trigger & Test Switch Circuit (G2), Input Power for PWM Level Shifters or Potentiometers (IN), 5V Connection for PWM Level Shifters or Potentiometers (5V1), 24V Connection to the Motherboard (24V), Ground Wire for the Motherboard (G3), 5V Connection for Digital Signals (5V2), Active Low (L2), and LO Control Line to Motherboard (Pin2).
A useful diagnostic feature is the Test Button, which may be mislabeled "TEXT." If the laser is powered but fails to fire, this button can be used to determine if the problem lies with the display panel, controller, or their wiring (if a test beam successfully fires). If the laser fails to fire even with the test button, the issue likely resides with the power supply or its connection to the laser, in which case customer service should be contacted.
For any questions or comments, users can contact customer support via email. A PDF copy of the latest version of the instructions can be accessed by scanning a QR code provided in the manual with a smartphone.
General| Output Power | 40W |
|---|---|
| AC Frequency | 47-440Hz |
| Output Voltage (Low Voltage) | DC 5V |
| Response Time | ≤1ms |
| Input Voltage | AC 220V or AC 110V (selectable) |
| TTL Voltage | 5V |
| Operating Temperature | 0°C to 40°C |
| Storage Temperature | -20°C to 60°C |
| Cooling | Forced Air |
| Protection Features | Over Current Protection |
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