Wintriss Shadow 8, User Manual

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Shadow 8 User Manual 1139300
Operation 3-9
Enabling Both Blanking Options
Programmable fixed blanking and floating blanking can be used simultaneously. Both
features, for example, can be used in an application where part of the tool physically protrudes
into the light field and an air blow-off randomly ejects parts. You would program a fixed
blanking window for the tool and a floating blanking window for the air-ejected parts.
If you program two fixed blanking windows on the same head, there must be a minimum of
two unblanked beams between the blanked areas to allow vibration in either blanked object.
In other words, if there is only one unblanked beam between two fixed blanking windows,
that beam must remain unobstructed all the time. A floating blanking window will not affect
the one unblanked beam.
OBSERVE CORRECT SAFETY DISTANCE WHEN USING BLANKING WINDOWS
• Ensure that the correct safety distance exists between the light curtain and the hazardous area.
See Calculating the Safety Distance, page 2-2 for detailed information on object sensitivity,
depth penetration factor, and OSHA and ANSI safety distance formulas.
• Add 5.38 in. (136.6 mm) to the calculated safety distance for a one-beam fixed blanking
window; add 2.69 in. (68.3 mm) for a one-beam floating window (see Increasing Safety Distance
To Compensate for Blanking Windows, page 2-10).
• When more than one beam is programmed as a fixed blanking window, and the blanked area is
not completely obstructed, the depth penetration factor is at least 36 in. (0.91 m).
• You do not have to change the safety distance if the blanked area is entirely blocked by a fixture
from the transmitter to the receiver so that operator intrusion into this area is impossible.
• Place ability to set floating blanking windows under supervisory control to avoid unauthorized usage.
Failure to comply with these instructions will result in death or serious injury.
MARK CORRECT MINIMUM OBJECT RESOLUTION ON SERIAL NUMBER LABELS
During installation strike out with a permanent marker the minimum object resolutions printed on
the serial number labels of receivers and transmitters that do not apply to your system. Make sure
to adjust the object resolution based on any blanking windows that have been set (see Increasing
Safety Distance To Compensate for Blanking Windows, page 2-10). Four object resolutions are
printed on each label.
DANGER
!
NOTICE