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GSI Group - Laser Division
JK300HP/JK300P/JK125P
Issue 2.0
Pre-installation and User Manual
Part No: 1EA300E01
Page
37 of 172
2.7.6 Workstation Interlock
Where safety interlock switches are operated frequently, a RIC is not suitable. In these
circumstances, workstation interlocks are used.
If the terminals of the workstation interlock are open-circuit (not electrically joined) then the
Laser Shutter closes, preventing the Laser beam from emitting from the Laser.
To enable Laser output, the terminals of the workstation interlock must be electrically joined,
either by fitting a short-circuit link within the Shutter interlock plug or by connecting a safety
interlock switch to the Shutter interlock plug.
WARNINGS
NO-ONE MUST ENTER AN AREA WHERE EXPOSURE TO HARMFUL
LEVELS OF RADIATION IS POSSIBLE.
DO NOT CLOSE THE SHUTTER BY MEANS OF THE SHUTTER CLOSE
COMMAND OR FROM A REMOTE CONTROLLER AS A MEANS OF
PREVENTING EXPOSURE TO LASER RADIATION.
IF A SHUTTER INTERLOCK PLUG IS FITTED WITH A SHORT-
CIRCUITING LINK, THE PLUG MUST BE WITHDRAWN FROM THE
SOCKET BEFORE ENTERING AN AREA WHERE LASER RADIATION
IS LIKELY TO EXCEED THE CLASS 1 (I) LIMIT.
IF THE LASER BEAM TERMINATES IN A CLASS 1 (I) WORK
ENCLOSURE, THE ACCESS DOORS MUST BE PROTECTED BY
SAFETY INTERLOCK SHUTTER SWITCHES CONNECTED TO THE
SHUTTER INTERLOCK SOCKET.
Petitioners Canadian Solar Inc. and Canadian Solar (USA) Inc.
Ex. 1025, p. 37