LC-C50 Laser Controller, for Coherent Diamond G50 and G100 CO2-Lasers
The laser controller LC-C50 is designed to control the operation of the Coherent DIAMONDTM G-50/100 OEM CO2-Lasers. Typical applications include laser cutting and engraving, but also the scientific use is supported. With the LC-C50 controller AED offers a complete solution, so there is need for in-house development of a system.
Front panel of the AED LC-C50 controller.
Features of the LC-C50 controller:
(For more details, please check the tail of this page.)
LC-C50 with Coherent DIAMONDTM G-50 in an experimental setup for ignition of solid rocket propellants, at Delft University of Technology, department of Applied Physics.
For more details, download the LC-C50 user manual (402kB, pdf format).
Pricing and Availability:
For more information, or pricing and availability information, please contact us.
Theory of operation
The main components of the laser controller are shown schematically in the figure below. The controller is divided into two printed circuit boards, the main board and the front panel printed circuit board. The main board contains the core of the controller: the microprocessor (uP) and its memory (RAM, ROM and E2PROM). The E2PROM is used to store user data, even if the controller is shut off (like custom waveforms and calibration data). The microprocessor communicates with the user through the front panel by means of switches, potentiometers and a LCD.
Block diagram of the LC-50 laser controller.
The power output of the Coherent DIAMONDTM G-50/100 Laser is set by a Pulse-Width-Modulation (PWM) signal . The output power increases with increasing Duty Cycle (DC) of the PWM-signal. Varying the frequency of the PWM-signal sets the properties of the laser beam. The LC-C50 controller contains a computer programmable PWM-generator with variable frequency. The laser can only be enabled when the enable safety key is in the enable position, and the interlock switch is closed.
Several control signals are available to check the laser status. These signals are generated by the laser as differential signals (RS-485). RS-485 receivers at the front panel convert these signals to normal signals available at the front panel. In case of an error situation, light emitting diodes (LEDs) light up at the front panel. As several of these signals are only active during the high period of the PWM signal, warning pulses as short as 1 us may be generated. To make these pulses visible, the extension circuit elongates these signals to 0.3 seconds.