Rockwell Automation Publication 1734-UM013J-EN-P - July 2014
41
Safety Inputs, Safety Outputs, and Safety Data
Chapter 2
Figure 20 - Muting Lamp Timing Diagram
shows the expected behavior of the muting status for test outputs T1 and
T3. Keep these points in mind as well:
•
When power is applied to the 1734-IB8S module, and T1 or T3 remains
commanded off, the muting status defaults to on.
This bit operation is designed to help prevent erroneous muting
instruction faults from the GuardLogix controller. This bit status may not
be the true indication of a burned-out lamp.
IMPORTANT
Before checking the state of the corresponding muting status, be sure the test
output is commanded on. Once the test output is commanded on, a maximum
time of 6 seconds is required for the module to detect a burned-out lamp.
Summary of Contents for Allen-Bradley 1734-IB8S
Page 1: ...POINT Guard I O Safety Modules Catalog Numbers 1734 IB8S 1734 OB8S 1734 IE4S User Manual ...
Page 4: ...4 Rockwell Automation Publication 1734 UM013J EN P July 2014 Summary of Changes Notes ...
Page 10: ...10 Rockwell Automation Publication 1734 UM013J EN P July 2014 Table of Contents ...
Page 14: ...14 Rockwell Automation Publication 1734 UM013J EN P July 2014 Preface Notes ...
Page 186: ...186 Rockwell Automation Publication 1734 UM013J EN P July 2014 Appendix D Safety Data Notes ...
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