Dynatect has supplied custom roll-up machine doors and curtains for over 30 years. While customers have used Dynatect roll-up doors in laser-safe applications, Dynatect’s doors are not rated nor certified laser safe and may require the approval of a site laser safety officer. Dynatect’s customers have consistently and successfully conducted their own safety analysis and approval for each application. See below for video and design details.
Dynatect has evolved the door design to combine two well-established technologies of Alumaflex Doors and Gortite® Automated Machine Safety Doors (AMSD).
Alumaflex “Type B” double-wall anodized aluminum slats feature a ball-and-socket style configuration that is both strong and light tight. This type of hollow aluminum semi-reflective extrusion serves as a functional light-tight heat-dissipating barrier. For larger doors, Dynatect may reinforce the integrity of the Alumaflex by adhering performance enhancing fabric to the non-laser side of the door.
Results from customer tests on Alumaflex include: 6kW laser power, 1100mm defocus distance; burn-through time exceeds 100 seconds. (The testing was performed by a customer, not an independent lab)
Gortite Automated Machine Safety Doors feature modular base plates, header and legs specifically designed for large, fast, mission critical doors. The legs feature guides that accept the Alumaflex door to maintain a light-safe labyrinth. The Alumaflex door is rolled up onto a drum in the header. The base plates allow for free-standing door. There are integrated T-slot channels on multiple surfaces to easily mount other components and/or safety considerations. This technology includes a motor/gearbox/brake drive and non-contact travel-end sensors. Options include LiDAR scanner (door auto-reverse), door closed safety interlock switch, and control systems.
Together these AMSD & Alumaflex technologies provide modular, economical, light-tight, secure, robust, and rapid doors ideal for laser applications. Door travel speed up to 20”/second. Door widths up to 12 feet, door height up to 10 feet. No additional counterweights, tension springs, or hold-down switches are required.
These safety sensor options are available with any control system option.
Sensor for detecting interference and supporting door-auto reverse function:
LiDAR Scanner (Non-Safety Rated or Safety Rated)
Fixed Photo Eye(s) for sensing interference while door traveling closed
Fixed 40” Light Curtain
Door Hold-Down Switch:
Latches door in closed-position, controlled by signal from machine
Door Closed Safety Interlock Switch and Safety Relay:
Helps meet PLe/Cat-4 safety requirements when combined with appropriate logic and conformance to risk assessment
Optional safety relay shipped loose or integrated into operator control unit
Safety circuit wiring required during installation
Note: The installer must ensure that the door, its controls, and any safety devices conform to applicable safety standards
Photo: LiDAR Scanner – The LiDAR scan is a 2D plane. 3D is shown for clarification.
Control System Options
Motor & 2 Travel-End Sensors only – (2) 24VDC Proximity limit switches. Motor with industry standard quick disconnect interface (4 conductor). No control box. Contactors, phase-relay, drive, logic, AC-power and DC-power by others. NOTE: Please advise Dynatect if a VFD will be used.
Integrator Control Box Option
Upgrade from “Standard Offering” that includes NEMA 4X (IP66)
control box with contactors, motor starter, and phase-relay. Pre-wired to accept “up” signal, “down” signal, and Standard Travel-End Sensors. Box mounting, field wiring, logic, AC-power and DC-power by others. All pushbuttons by others. Any “Sensor Options” are field wired to customer controls and logic by others. In-box safety relay mounting option.
Variable Speed Controller Option
Upgrade from “Integrator Control Box” with added pushbuttons
(Up, Down, E-stop), external disconnect switch, variable speed drive, 24VDC power and logic for all sensor options. Includes termination to accommodate options of: “LiDAR”, “Fixed Photo Eye”, “Fixed Light Curtain”, and safety interlock. In-box safety relay mounting option.
Motor Mounting Options
Right Angle Motor Mount (up, down, front, back)
In-Line Motor Mount (facing front, facing back, above top roll header) – adds $1700 to total price