Jtech Laser Lcd Current Monitor Site Discuss.Inventables.Com

Caution: eye protection is necessary at all times.

Remember that it is not a toy. Laser radiation is dangerous even when scattered or reflected from any surface.

Always use proper protection laser filter on your CNC machine dedicated to 430 - 480nm in order to avoid reflected radiation.

Never point laser head at people or animals. Do not touch the beam, it may cause burns or other injury.

Do not stare at the beam or the beam spot while the material is being cut.

Laser radiation - Avoid eye or skin exposure to direct or scattered radiation.

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With this Laser upgrade you can transform your 3D printer or CNC into a Laser Engraving & cutting machine! With the powerful 2.8W laser you will be able to:

• Engrave and cut Acrylic
• Image Engraving
• Engrave on Wood
• Engrave anodized aluminium
• Engrave on Leather
• Engrave plastic, fiberglass, carbon fibre, etc
• Cut Balsa and Basswood
• Cut Foam
• Cut thin plastics
• Make custom prototype PCBs
• and more!!

Check loads of examples here

This kit is compatible with almost any 3D printer and CNC available in the market as the Makerbot Replicator 2 & 2X, Ultimaker 1 & 2, Shapeoko 2, X-Carve, etc. Check this page to see how to install the kit in different printers.

The kits gives you a bunch of features that makes it awesome – precision laser trimmed regulators for constant current to the laser, 0.01 tuning resolution, digital isolation, soft start, esd protection, current limiting, and the list goes on. It was also manufactured with safety in mind! The US Federal Government has a list of things that are required for operating these high power class 4 lasers. They might seem trivial, but they could save your eyesight! Here is a run down of the new safety feature s to protect yourself and others:

Key Switch – This key is needed to enable the laser. When the key switch is turned on, the laser is enabled and the key CANNOT come out. You can only remove the key when it is disabled. This feature is good if you have curious children have your laser in a shared area and want to limit use. Just take the key out and hide it!

Remote Interlocks – This feature allows for addition of switches to your enclosure so when it is open, the laser will automatically turn off. Also provides for the addition of an E Stop button for the laser, which is always good for if you need to stop the laser super quick! Add as many switches as you want to make a super safe area for your laser machine so nobody can accidentally look into the laser.

Power Fault Protection - This one may seem like it is not needed, but hear us out. Consider your power goes out in your area where the laser is located. You were running your program and then everything is dark… Power doesn't come back on for awhile… long enough for you to forget that the laser was left ON! You come back and are checking your laser and boom, the power is back on, right when you are looking straight at it. Well, don't worry because the laser will be disabled whenever the power to the driver is lost. Press the reset button and you are back in action!

Emission Indicator - The small little LED on the front to let you know your really super bright laser is on… They require this in case you are using an infrared invisible laser.

What this kit includes

This kit is a combination of the new 2.8W 445nm 9mm Laser Diode Component and the 2.5 Amp matching safety compliant laser driver kit with a 12V adapter. We now include a pair of safety goggles with every kit as well! This has everything you need to get your laser up and running in your product or project. The kit includes:

• 2.8W 445nm 9mm Laser Diode Component (with 2.5′ Mini Fit Jr. Connector Cable included)
• 2.5 Amp Adjustable Safety Compliant Laser Diode Driver
• Power Adapter 12V 2.5A, International Style Plugs
• Laser Safety Goggles for 445nm Lasers
• Fan upgrade Kit

Laser Overview

This is the bigger 445nm 9mm laser diode with an added very high quality G2 optic lens with 30% higher efficiency than our traditional three element glass lens!  It has way more power than the 1.7W laser we have been offering. The difference is that this bad boy can run for extended times at 2.2W at 1.7amps!  This laser has a maximum limit of over 2.8W at 2.5amps and should only be over-driven like this for very short times.   This level of power certainly creates the ability to cut more and do more with your laser.  The spot size is a bit bigger, so very small engraving will be a bit more difficult, but the trade-off in more optical power on the work surface is worth it.  This laser is very effective and can run for extended times in the 1.3amp to 1.7amp range and we recommend not going much over 2 amps for extended periods of "on time".  This laser also has internal ESD device for an extra level of static protection.

This multi transverse mode laser diode component is pressed fit mounted in an aluminium housing and has an aluminium mountable heat-sink.  The laser is set in the heat sink with thermally conductive paste.  The front of the component contains a adjustable glass focusing lens for the laser output.  The laser has an ABSOLUTE MAXIMUM of 2.8W at 2.5amps and should only be run at this level for very short times.  Additional cooling techniques would be advisable if you want to run for extended periods at higher powers.  1.7 amp at 2.2W will allow for longer "on" times and will not degrade the laser as quickly.  Thermal issues are the number one reason for catastrophic failure of the laser.  While the mounting case provides heat sinking capability for the laser diode, it is up to the consumer to make sure the laser is operating effectively within these limits.

Absolute Maximum Ratings

Item	Absolute Maximum Ratings	Unit
Forward Current (Tc = 25°C)	2.5	A
Absolute max output optical power	>2.8	W
Allowable Reverse Current (Tc = 25°C)	85	mA
Operating Case Temperature	50	°C

Electrical / Optical Characteristics

Item	Min	Typ.	Max	Unit
Optical Output Power @1.3 amps		1.6		W
Optical Output Power @1.7 amps		2.2		W
Dominant Wavelength	435		455	nm
Threshold Current	80		220	mA
Operating Voltage	3.7		5.5	V
Focused Spot Size	0.008	0.01		Inches
Beam Divergence Full Angle (1/e^2) //	5	14	25	deg.
Beam Divergence Full Angle (1/e^2) – Perp	30	44	50	deg.

*Above specifications are for reference purposes only and are subject to change.  Figures in specifications may contain measurement errors.

Driver Overview

This is the fourth generation of the popular High Current Laser Diode Driver series. We designed this new generation to follow the federal guidelines for safety compliance for high power Class 4 laser operation. This includes the use of a key enable switch, safety interlock system, power off reset, and laser LED indicators. All of these features make for a safer laser operation and will comply with federal laws regulating such operations.

At the heart of the product are laser trimmed parallel regulators to give constant current without the large temperature dissipation of other regulators. Couple this with inherent safety features like soft starting, current isolation, reverse protection, ESD protection, and thermal shutdown control and you have all you need in a small package.

The high power laser diode driver is cost effective and easily integrated into industrial, research, or enthusiast projects and products. The driver can be operated in CW mode or in Input Control Mode to be interfaced to remote electronics. This design uses digital isolators for super fast response and input range while protecting the laser from deadly ground loops. The board has screw terminal connections as well as Molex mini-fit Jr. connectors for easy connections to external equipment for control and the laser diode output.

Features

• High power current source for driving Laser Diodes and Light Emitting Diodes.
• Current Range of 2.5 Amps.
• Current Ranges are adjustable in 500ma increments.
• Integrated cooling fan
• Soft start for diode protection.
• Reverse diode and ESD protection.
• Thermal Protection and Over Current Protection.
• Federal Compliant Safety Features
• Key switch, Remote Interlock, Power Fault Reset
• Compact Size.
• CW Mode and Input Control Mode.
• Digitally isolated control input.
• Control from CW to 5KHz.
• Configurable Input signal: Inverting /Non-Inverting.
• Multiple connector options for both Laser/LED output and control input.
• LED status lights for input laser enabled and laser on.

Specifications

Current Source Range:	0 – 2.5 Amps
Current Limit Jumper Settings:	0.5, 1.0, 1.5, 2.0, 2.5 Amps
Compliance Voltage w/12V adapter:	8 volts
Current Resolution:	0.1%
Current Adjustment:	Analog Trim Pot
Current Range Accuracy	Always greater than limit, no more than 15%
Laser Diode Protection:	Soft Start, Reverse Voltage, Current Limit, Thermal Shutdown
Integrated Safety Features	Laser Enable Key Switch, Integrated Laser Interlock, Power off Reset, LED Indicators
AC Adapter Input Voltage:	100 – 240 VAC
Control Signal Digital Isolation Voltage:	4500 Vrms
Minimum Control Signal "Turn On" Voltage:	2.8 Volts
Control Signal Maximum Voltage:	36 Volts
Control Signal Maximum Current:	50 ma
Control Signal Maximum Frequency:	5KHz
Connectors:	Screw Terminal and Molex Mini-Fit Jr™ Connectors
Operating Temperature:	0 to 40 °C
Storage Temperature:	-40 to 70 °C
Dimensions:	3.6″ x 2.2″

EAN / UPC: 3183970760741
Manufacturer part No: LD445_2_8WKIT_FDA_INT

Jtech Laser Lcd Current Monitor Site Discuss.Inventables.Com

Source: https://robosavvy.com/store/jtechphotonics-2-8w-laser-engraving-cutting-kit.html

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