Angled Light Screen
Station "B"
Hard Guarding
Station "A"
Retroreflective Targets
Detail B
Station "A" Run-Bar
Station A
Work Envelope
Clamping and Welding Fixtures
Detail A
Angled Light Screen
M1B and M2B Station
"B" Mute Circuit
M1A and M2A
Station "A"
Mute Circuit
Station "B" Run-Bar with
T
wo-Hand Control,
E-Stop, and Clamping
Manual Release
Figure 35. A robot load/unload application with two-station home-position muting, using polarized retroreflective photoelectrics as muting devices
8.1.4 Turret Table Application
Turret Table application is similar to the Robot Load/Unload Station muting application, except that any movement of the
table ends the mute. To accomplish this, small retroreflective targets (or tape) are positioned so that they will initiate the
mute (the sensors must be set to Light Operate) only after the table has finished indexing.
Note: The example shows four pairs of targets, one pair for each position.
When the table begins indexing again, the polarized
retroreflective photoelectrics immediately lose sight of the targets and
end the mute. Since the rotation of the table is the hazard, the size and positioning of the targets must prevent muting while
motion is taking place.
The top of the emitter and receiver are angled outwards to maintain proper separation distance while preventing a pass-
through hazard. Hard guarding, or other safeguarding, must be positioned to prevent personnel from reaching through and
accessing any hazard.
EZ-SCREEN Low-Profile System with Integral Muting
58 www.bannerengineering.com - Tel: + 1 888 373 6767
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