SMARTSCAN 053B101, Руководство по установке, Страница: 24 / 49

T4 (053B) Series Installation Guide
CD354/220116 Smartscan Ltd 20
1) Floating Beam Blanking
Floating beam blanking allows the user to create a larger unprotected opening in
the light curtain infrared field. The name floating beam blanking originated due to
the fact that the disabled beams are not fixed at a specific location. The object
can move or Float within the detection zone of the light curtain without initiating a
stop signal providing the object does not interrupt more than the selected number
of Floating beams.
The T4 (053B) series safety light curtain will allow a specified number of beams
(maximum of 3 adjacent beams) to be blocked without it sending a stop signal to
the safe guarded machine. The examples above show 2 beam floating blanking
in the T4 (053B) series safety light curtain. The light guard will remain active with
one or two beams blocked at a single point entry in the light curtain’s detection
zone. If any additional beams are blocked it will trip the guard and the safety
outputs will go off sending a stop signal to the safe guarded machine.
The object may also be required to move
through the detection zone of the light curtain,
e.g. from the top of the detection zone to the
bottom of the detection zone. As long as the
object does not block more than the number of
beams blanked it can travel through the
detection zone without tripping the guard and
sending a stop signal to the machine.