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Product description: Engraving laser 3D/CNC PLH3D 6W Hobby
The third generation engraving laser head for fans of the Lasers Optcompany. It uses the same high powerdiode laser and an excellent aluminum designand driver asthe XF version, but it has a simplified cooling system with fan for15 m3/h, which is suitable for less demanding tasks.
Engraving laser PLH3D Hobby allows the user to performhigh quality design, cutting and engraving on different materials such as wood, cardboard, rubber, paper, textile, leather, plastic, balsa, plywood and many others, stainless steel, titanium, and steel, characterized by low conductivity.
Tripletlens with high resolution that has been pre-installed in the head is set to focus at a height of60 mm(measured from the front surface of the laser head to the engraving plane). Built-in lens has a relatively long and effectivefocal length (EFL) at 8 mm, which allows to focus the laser beam on a small point. All6 of the lens surfaces are covered with an anti-reflective coating (AD) operating at450 nm. It is preferred for engraving thin lines, cutting thicker material due to the reduction in convergence and divergence, or when there is a large distance between the laser head and the engraving plane. The focal length can be quickly set or altered using the includedcontrol lens (without additional tools).
In addition to the standard functionality, the small spot allows you to use this device for quickPCB prototyping. This is done by exposure of the copper layer plates after applying a photosensitive paste.
The kit was supplied with a second lens- high performanceaspherical lens. It was designed to get as much of the power of the laser diode. Its short effective focal length(EFL) of 4 mmallows a variety of working distances. However, the stain is almost two times bigger when compared to a triplet lens. This lens can be used for engraving thick lines in wood or plastic. Aspherical lens should be set closer to the laser diode.
The device hasa built-in driver in the laser head. Short connection between the laser diode and the driver providesthe best protection of LED, the possibility of modulation the high frequency current, and it also eliminates the effects of inductance when switching on.
The device acceptsa wide range of power supply 12 - 24 Vwith built-in functions of DC-DC converter regulating the input voltage to the desired voltage compatible with the diode. This reduces the amount of heat, and provides surge protection.
The laser headrequires no additional cooling as it was supplied with the method prevents heating of the head above 10 degrees Celsius throughout the hours of continuous operation with full capacity.
The thermal protection systemautomatically switches off the device in the case the case temperature exceeds 45°C.
The analog input is protected by Zener diode 5 V, when sometimes there is a voltage above 5 V. In spite of everything, this input should not be used at higher voltages because of the risk of damage.
The laser diode is protected by a Schottky diode, which protects it from solid particles of metal in the CNC environment.
The connection method of the engraving laser
The laser head has two separate controls.
The modulation input 1 receives a voltage in the range of
- from 0 V to 5 V
- or 0 V to 10 V (with added resistor 4.2 kOhm connected in series) for analog modulation.
The modulation input 2 accepts voltage in the range
- from 0 V to 5 V
- from 0 V to 10 V
- or 0 V to 24 V
for TTL / PWM and turns the laser on when the voltage exceeds 2.5 V.
The connection of the analog signal 10 (X-Cut, CS-Lab and other devices)
To connect an analog signal from 0 V to 10 V to the modulating input No. 1 you should add a serial resistor 4.2 kΩ (included in the supplied universal power adapter or in the "hobby" kit).
| Electric outputs | |
|---|---|
| Pin | Function |
| 1 | the modulation input 1 |
| 2 | the modulation input 2 |
| 3 | GND |
| 4 | Vcc GND |
| 5 | VCC GND 12-24 V |
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IMPORTANT:the laser gead needs to be a supplied with a high quality power source without connecting other elements. NOTE:it is not recommended to connect the laser head to the same PSU as a stepper motor or other equipment with high resistance. This can lead to damage of the laser diode. |
Specification of engraving laser
- The wavelength of laser diode: 450nm
- The power of optical laser diode: 6 In
- Focal length: 20 - 120 mm
- The spot size of the focused beam:
- @ 30 mm 0.1 x 0.1 mm
- @ 55 mm - 0.1 x 0.125 mm
- @ 80 mm - 0.1 x 0.3 mm
- Input voltage: 12 - 24 V
- Maximum input current: 2 A
- Maximum power consumption: 25 W
- Type of modulation: analogue / TTL
- Noise level: 23 DBA
- Mounting method: 4 holes 24 x 15 mm
- Type mounting holes: M3 x 0.5 x 4.5 mm
- The possible range of ambient temperature operating: 0 - 40°C
- The modulation input 1: 0 - 5 V analog / TTL / PWM
- The modulation input 2: 0 - 24 V TTL / PWM
- The maximum modulation range: 30 kHz
- Laser diode drivers high power and high frequency
- Built-in microcontroller to measure temperature
- Built-in restriction system current (high current in a short period of time) when switching devices
- Thermal protection - 45°C
- Protection from static electricity
- Overload protection laser diode
- The overcurrent protection
- Compact size and efficiency > 90 %
- CW mode and the control input mode
- Inputs PWM / TTL or analog
- Dimensions: 40 x 55 x 69 mm
- Weight: 190 g
The contents of the set
- Laser head PLH3D 6W Hobby
- High-speed controller with analog inputs and PWM / TTL
- Engraving lens high resolution (default)
- High-performance engravinglens
- Connecting strip for extending the wires, if necessary
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