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DMP System Response if an Interlock Fails
Safety interlock devices mounted on the DMP system sense the hazardous operating conditions below. The DMP system
takes the actions listed when an interlock fails.
SAFETY INTERLOCKED CONDITION
•
For all conditions
•
Front doors open
•
Scanner head open
•
Airlock door open
•
E-Stop
•
Oxygen in process chamber too high
Limited Access and Barrier Shielding
DMP equipment frame and enclosure designs limit access to the following:
•
Service areas, such as cabinets and enclosures for electrical power and automation controls. This prevents accidental
exposure to electrical shock hazards.
•
Material areas, such as material feed hoppers. This prevents:
•
burn hazards by minimizing exposure to heated material
•
slip hazards by preventing material from spilling onto the floor
•
fire hazards by minimizing airborne dust cloud formation and potential ignition. See SDS for complete material
hazard details.
•
Laser beam optics and scanning areas, including the fully-enclosed print head—where the laser beam originates—
and the interior of the print chamber, into which the beam projects. The scan head and chamber are designed to mini-
mize hazards such as burns, eye injury, and fire in the following ways:
•
The scan head optics and laser beam duct (at the top of the chamber) prevents the laser beam from being aimed
outside the print chamber.
•
The fully enclosed chamber blocks laser radiation from escaping to the outside.
•
The material of the chamber window, which conforms to CE EN207, also blocks laser radiation so you can safely
observe the part during a print.
3D SYSTEMS, INC.
IF THIS INTERLOCK FAILS...
•
No job will start
•
Warning message appears on DMP system display
•
Orange stacklight illuminates
•
Laser interlock activated
•
Supply of the motors is cut off (400V): carriage and
feeding
•
Airlock motion blocked
•
Supply of the motors is cut off (400V)
•
Laser power cut off
•
230V actuators cut off (blower, light, oven, vacuum
cleaner recoiler)
•
Red stacklight illuminates
•
No job will start
•
Warning message appears on DMP system display
•
Blowers not operating.
•
Process filter valves closed
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