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MM-TA-12B Muting Module
Instruction Manual
3-Beam
EZ-SCREEN Grid
(see note below)
+24V dc
3
0V dc
GND
M1
–
+
M2
–
+
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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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.
Safe Area
(free movement of personnel)
Carrier
Basket
MODEL NO.
MM-TA-12B
7
+
–
+
–
STATUS
System Installation
EZ-SCREEN Grid
Receiver
M1
(protected from personnel entry)
EZ-SCREEN Grid
Hard Guarding
Emitter
Mute Lamp
GUARDING
Safety Mat
SYSTEM
(Indicator)
Monitor Module
(or Light Screen
A
B
Controller)
K1
A
B
1
2
Reset
MACHINE
INTERFACE
Machine
Interface
8
(see figures
3-17, 3-18, 3-19)
M2
Hazardous Area
Safety Mat (or
Horizontal-Mounted
Safety Light Screen)
K2
4-Wire Safety Mat
(or Horizontal-Mounted
Safety Light Screen)
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