Banner MMD-TA-11B Muting Modules - Manual (Page 49)

P/N 116390 rev. C
47
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
E
R
A B
C
Carrier
Basket
Light
Screen
M1 M3
M2 M4
A ≥ (speed of line ft/sec) x 0.1 sec.
B ≈ 3" or 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
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
R
E
Carrier
Basket
M1
Hard Guarding
M2 M3 M4
Light
Screen
A ≥ (speed of line ft/sec) x 0.1 sec.
B ≈ 3" or 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