Cloudray MYJG-40W User manual

MYJG-40W
Laser Power Supply
Instruction Manual
Read Carefully Before Use
Keep for Future Reference
V20220713

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With its high e󰀩ciency, frequency, and speed, this power supply is an essential part of your laser
engraver, converting standard AC power into the high-voltage DC power needed for your laser tube.
The lightweight, compact MYJG-40W laser power supply is easy to operate and highly compatible
with a variety of 40W CO₂ lasers. It connects directly to your system and works without similar
devices’ usual heat-generating heavy ballast resistance. Using this power supply ensures quick
operation and maximizes the performance of your laser device, extending its service life.
Specications
Model MYJG-40W
Input Power A110–120 V~ 60 Hz
B220–240 V~ 50 Hz
Output Power 20 kV DC
Max. Current 20 mA
Max. Response Time 1 Millisecond
Max. Safe Humidity 85%
Operational Temp. Range 14 to 104°F −10 to 40°C
Dimensions 6.5×5.6×3.1 in. 165×142×78 mm
Net Weight 2.4 lb. 1.1 kg
Safety Information
• The input voltage for this device is controlled by a switch on the right side. Make sure that the
selected voltage matches your country’s power supply prior to use.
• ONLY install, adjust, or remove this device when all power to your engraver is turned o󰀨 and
unplugged.
• Similarly, make sure that your engraver is properly grounded prior to use. Use only with
engraving machines that employ a three-prong plug with a ground terminal. For best results,
use with an EMI lter.
• Be careful that the positive and negative output terminals are properly connected to the
proper poles of your laser device prior to use.
• Be
EXTREMELY careful around the high-voltage anode wire and its connections. The
connection to the laser tube should be sealed to prevent sparking.
• Ensure that your CO₂ laser’s water cooling system is operating properly during use. In
systems equipped with a protective sensor in their water system, this power supply will
automatically cut o󰀨 power to the laser if a malfunction is detected on the sensor’s circuit. In
systems without such a circuit, however, the water cooling system is no less important and its
proper operation should be manually ensured prior to each use.
• There is a bleeder resistor inside your power supply. It generally discharges harmlessly into
the ground connection, but do not open this device without specialized training.
• Just like your CO₂ laser, this power supply should be kept in an environmentally-controlled
room to ensure proper operation. Do not use the device outside of its approved temperature
and humidity ranges.
Warning!

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Terminals
The rst bank is a screw terminal block that connects your laser power supply to the laser tube's
cathode and the power input from your home or business's main power. If you are assembling
your laser, you will need to install the wiring correctly yourself. Place the wires into the proper
slot & tighten them into place with the block's built-in screws. If this is a compatible replacement
part, you can simply plug in your current block.
L−: Laser Return: Connection to the Laser Tube Cathode (and usually Ammeter)
FG: Ground Wire for the Mains & Case
AC₁: Neutral Wire to 110/220V Power
AC₂: Live Input from 110/220V Power
The second & third bank connect your laser power supply to the engraver's control system. Just
like the rst bank, if you have one already set up, you can simply plug in your old screw terminal
block directly. Otherwise, take care to install the wiring correctly. Use of separately colored
wiring is recommended.
G₁: Ground Wire for the Laser Trigger & Water System
P: Line to the Laser Trigger, Water, & Other Systems (such as a door switch)
L₁: Active Low Pin₁: Line to the Engraver's Test Switch for Alignment and Checking
G₂: Ground Wire for the Engraver Laser Trigger & Test Switch Circuit
IN: Input Power for PWM Level Shifters or Potentiometers
5V₁: 5V Connection for PWM Level Shifters or Potentiometers
24V: 24V Connection to the Motherboard
G₃: Ground Wire for the Motherboard
5V₂: 5V Connection for Digital Signals
L₂: Active Low
Pin₂: L0 Control Line to Motherboard
In the event that your laser is powered but fails to fire, the Test Button (possibly mislabeled
TEXT) can be used to see if the problem lies with the display panel, controller, or their wiring (if
it successfully res a test beam) or if the problem lies with the power supply or its connection to
the laser (if the laser fails to re). In the event of a problem with the power supply or connection,
contact customer service.
L − F G A C₁ A C₂G₁ P L₁ G₂ I N 5V₁24V G₃ 5V₂L₂

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Contact Us
Thank you for choosing our products! If you have any questions or
comments, contact us at [email protected] and we'll resolve your
issue ASAP!
For a .pdf copy of the latest version of these instructions, use the
appropriate app on your smartphone to scan the QR code to the right.
LPS-0040-US
LPS-0040-UK
LPS-0040-01
Rev. 13 Jul. 2022