Rockwell Automation Publication 450L-UM001F-EN-P - March 2022
73
Chapter 6 Installation and Wiring
Measures to avoid optical interference or optical cross talk are:
1. Minimum installation distance S between adjacent installed pairs (see
2. Installation of optical barriers (see
).
For 450L-E safety light curtains, a measure to help prevent optical cross talk is
also the beam code function (see
). The beam code
function helps prevent optical cross talking. It also reduces the probability for
optical interferences but it does not fully stop them. You can also use
interference rejection, see
Interference Rejection on page 28
Figure 49 - Two Adjacent Installed Pairs without Optical Crosstalk
Figure 50 - Two Adjacent Installed Pairs with Optical Crosstalk
shows a number of installation techniques to stop optical
interference or optical crosstalk between adjacent light curtains.
•
Check that the maximum operation range can be reduced (see
Low Operating Range on page 27
•
Invert adjacent pairs.
•
Install mechanical (optical) barriers to help prevent optical interference
(
•
For 450L-E safety light curtains only: Check if the beam code feature is a
possible option (see
).
Rx (2)
Rx (1)
Tx (1) <-> Rx (1)
Tx (2) <-> Rx (2)
Tx (1)
Tx (2)
Rx (2)
Rx (1)
Tx (1) <-> Rx (2)
Tx (2) <-> Rx (1)
Tx (1)
Tx (2)
Содержание Allen-Bradley 140M
Страница 8: ...8 Rockwell Automation Publication 450L UM001F EN P March 2022 Table of Contents Notes ...
Страница 20: ...20 Rockwell Automation Publication 450L UM001F EN P March 2022 Chapter 2 Safety Concepts Notes ...
Страница 108: ...108 Rockwell Automation Publication 450L UM001F EN P March 2022 Chapter 7 Status Indicators and Troubleshooting Notes ...
Страница 114: ...114 Rockwell Automation Publication 450L UM001F EN P March 2022 Chapter 8 Safety Instructions Notes ...
Страница 184: ...184 Rockwell Automation Publication 450L UM001F EN P March 2022 Appendix B Typical Installations Notes ...
Страница 190: ...190 Rockwell Automation Publication 450L UM001F EN P March 2022 Index ...
Страница 191: ...Rockwell Automation Publication 450L UM001F EN P March 2022 191 GuardShield Safety Light Curtain User Manual ...