
Appendix B
MM-TA-12B Muting Module
Instruction Manual
Carrier
Basket
Light
Screen
M1
M3
M2
M4
E
R
A
≥
(speed of line ft/sec) x 0.1 sec.
B
≈
3" (suggested position must hinder
personnel following muted object)
C
≤
Length of carrier basket
– Trapping hazards must be avoided and
clearance requirements complied with.
– Switch actuators can not be so long that they
allow a single person to initiate a
muted condition.
– Polarized-retroreflective (with targets
mounted on carrier) and inductive
proximity sensors could be used in a
similar manner, if an individual can
not ride into the hazardous area.
One-way (directional) muting can be used
in "Exit" applications to reduce the
possibility of intentional defeat.
Hard Guarding
A
B
C
Whisker/Limit
Switches
Transfer Line
Figure B-4. Entry/exit system using 4 whisker/limit switches as muting devices
Figure B-5. An entry/exit system using four photoelectric sensors as M1, M2, M3, and M4
Carrier
Basket
R
E
M1
Hard Guarding
M2
M3
M4
Light
Screen
A
≥
(speed of line ft/sec) x 0.1 sec.
B
≈
3" (suggested position must hinder personnel
following muted object)
C
≤
Length of carrier basket
D
<
(speed of line ft/sec) x 3.0 sec., but beams M1 and M2
must be far enough apart to hinder an individual
from triggering both sensors.
One-way (directional) muting can be used in "Exit" applications to reduce the possibility of intentional defeat.
Safety Mat
D
A
C
B
D
Buy: www.ValinOnline.com | Phone 844-385-3099 | Email: [email protected]