Muting – Rockwell Automation 440C Guardmaster 440C-CR30 Configurable Safety Relay User Manual User Manual
Page 52
52
Rockwell Automation Publication 440C-UM001C-EN-P - November 2014
Chapter 9
Safety Monitoring Functions
Muting
Muting is the temporary automatic suspension of the protective function of a
safeguarding device like a light curtain. The muting function allows the transport
of material through a light curtain without stopping a conveyor. To distinguish
between material and persons, a certain sequence of events and timings are used.
Muting sensors are mounted in a certain pattern, and the material must pass by
the sensors and light curtain within specified time limits. If the muting sensor
sequence is incorrect or the timing parameters are violated, the conveyor is
turned off. An override signal moves the material through the light curtain after a
violation.
Figure 45 - Muting Function Block
The light curtain (LC) signals can use the following terminals:
•
EI_00…EI_11 (embedded input terminals 00…11)
•
MP_12…MP_17 (multi-purpose terminals 12…17)
The muting (S1…S4) and override (OV) signals can use the following terminals:
•
EI_00…EI_11 (embedded input terminals 00…11)
•
MP_12…MP_17 (multi-purpose terminals 12…17)
•
P1_00…P1_03 (plug-in 1 terminals 00…03)
•
P2_00…P2_03 (plug-in 2 terminals 00…03)
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