Banner MMD-TA-11B Muting Modules - Manual (Page 52)

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P/N 116390 rev. C
Banner Engineering Corp. • Minneapolis, U.S.A.
www.bannerengineering.com • Tel: 763.544.3164
MMD-TA-11B / MMD-TA-12B Muting Module
Instruction Manual
Appendix B
Turret Table Application
A “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.)
Muting Sensors and Retroreflective
Targets at Different Heights and
Positions
Load
Conveyor
Unload
Conveyor
Milling
and
Drilling
Operations
M1
Retroreflective
Targets at Each Position
to Initiate a Mute
M2
Defined Area
Hard Guarding
Load
Unload
Figure B-8. A typical application for turret table inspection or operation station muting, using retroreflective photoelectric sensors
as muting devices
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.