Shadow VI User Manual 1107200
Fixed and Floating Blanking Chapter 3 page 77
Floating Window
DANGER
!
INCORRECT SAFETY DISTANCE WHEN USING FLOATING WINDOW
• Ensure that the correct safety distance exists between the light curtain and the hazardous
area. See Chapter 2 for detailed information on object sensitivity, depth penetration factor
and calculating the safety distance.
• Maintain access to blanking windows and floating window under supervisory control to avoid
unauthorized usage.
Failure to comply with these instructions will result in death or serious injury.
The built-in floating window feature provides a means for the random bypass of only one
beam of the light curtain. It is useful in those applications where material or air ejected parts
must pass through, or move within the sensing field in a random pattern.
The next illustration shows how coil stock cuts different light beams as the coil unwinds. As
long as only one beam is cut at a time (no matter which one it is), Shadow continues to allow
machinery to operate.
coil stock
straightener
light beams
Figure 3-3. Coil Stock Unwinding Using Floating Window
The floating window may only be used when material or parts take up a space no greater than
1
1/8" (2.9 cm) within the sensing field. Larger material would block more than one light
beam at a time and send a stop command.
To Next Page
Loading...