System Installation
MM-TA-12B Muting Module
Instruction Manual
3.5.5.3 USSI Supplemental Safety System Hookup
A variety of safety systems can be interfaced with the MSSI and the USSI. Each
safety application has a unique set of application requirements; the user is
responsible to ensure proper installation, and use, and that all relevant standards
and regulations are complied with. The following figure is a generic example of
the flexibility of the USSI.
Entry/Exit Application with a Multiple Beam safety system (muted) and a safe-
ty mat system
(see Appendix B for more information)
This application is widely used in a variety of situations, including manufacturing
cell, robotic cells, palletizers, and de-stackers. One of the many requirements of
this muting application is that it must not be possible for personnel to walk in
front of, behind, or next to the muted object (e.g., the carrier basket) without
being detected and stopping the hazardous motion.
Below is one example of how supplemental safeguarding (such as a safety mat
system or horizontal safety light screen) can be interfaced to prevent personnel
from entering the hazardous area during a mute condition.
123
4
56
78
123
4
56
78
MM-TA-12B
B
B
A
A
2
1
STATUS
MACHINE
INTERFACE
GUARDING
SYSTEM
AMP
/
AUX
USSI
OVERRIDE
BANNER ENGINEERING CORP
., USA
(763) 544-3164
RESET
M4
M3
M2
M1
MODEL NO.
7
3
8
Machine
Interface
(see figures
3-17, 3-18, 3-19)
Safety Mat
Monitor Module
(or Light Screen
Controller)
Reset
K1
K2
Mute Lamp
(Indicator)
3-Beam
EZ-SCREEN Grid
(see note below)
+24V dc
0V dc
GND
M1
M2
+
–
+
–
+
–
+
–
Carrier
Basket
Safe Area
(free movement of personnel)
Hazardous Area
(protected from personnel entry)
Hard Guarding
Safety Mat (or
Horizontal-Mounted
Safety Light Screen)
4-Wire Safety Mat
(or Horizontal-Mounted
Safety Light Screen)
M1
M2
EZ-SCREEN Grid
Receiver
EZ-SCREEN Grid
Emitter
NOTE: Depending on the application, the 3-beam EZ-SCREEN Grid
system shown typically would be configured for Trip Output
(Automatic Reset). The Muting Module's manual reset
would be used to reset the system in the event of a stop
command being sent to the machine interface. This allows
the EZ-SCREEN to be interrupted as materials pass through
during a muted condition, without requiring a reset each
time a blocked condition occurs.
Figure 3-15. Interfacing supplemental safeguarding to prevent personnel from entering the hazardous area during the mute
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