Banner MM-TA-12B Instruction Manual page 51

MM-TA-12B Muting Module
Instruction Manual
WARNING . . .
User is Responsible
for Safe Application
of this Product
The muting application examples
described in Appendix B depict gen-
eralized guarding situations. Every
guarding application has a unique
set of application requirements.
Extreme care is urged to ensure
that all legal requirements are met
and that all installation instruc-
tions are followed.
In addition, any questions regarding
safeguarding should be directed to
the factory applications department
at the telephone number or
addresses listed on the front cover.
Buy: www.ValinOnline.com | Phone 844-385-3099 | Email: CustomerService@valin.com
Home or Station Applications
The muting devices must be placed to ensure that the safety light screen is
muted only when the hazard does not exist or is in another area so that person-
nel are not exposed. The muting devices must be placed so that if a hazard aris-
es, or the hazard enters the safeguarded area, the mute will immediately end and
the safeguard will be active once again.
Light Screen
Emitter
M3
Automated
M4
Figure B-6. A "home position" (door) muting application, using 4 safety switches as
muting devices
In "home position" muting applications, the light screen is active only while
motion is taking place or a hazard is present, such as the closing of an automat-
ed door. In this example, the door is interlocked and the machine can not start
until the opening is completely closed. The hazard being guarded by the light
screen is the pinch point caused by the door closing.
M3 and M4 could be two SI-QS75MC safety switches, each with a single safety
contact used for the muting input. M1 and M2 could be SI-QS90MF safety
switches, each with two safety contacts (one for muting and one for interlocking)
and one monitoring contact for a logic input.
If the light screen is also guarding hazards within the enclosure when the door is
open or preventing cycle initiation, then switches M3 and M4 would not be used.
The door could also be "locked" by using locking style safety switches, such as
the SI-QM100 or SI-LS42 as M1 and M2.
Light Screen
M1
Hazardous
Door Area
M2
Appendix B
Receiver