Rockwell Automation Publication 450L-UM001F-EN-P - March 2022
43
Chapter 4 Safety Function
A time (t
sens
) of 4 s is recommended in IEC 62046.
The behavior of the muting lamp indicator is analogous to the behavior
described in
Two-sensor T-type Muting on page 37
.
It is not possible for a person to pass undetected to the left or right of the object
during the muting process.
Cascading
The cascading feature is only available for the 450L-E and 450L PAC safety light
curtain. A 450L-B safety light curtain can only be used as the last pair of a
cascaded 450L-E safety light curtain system.
The insertion of an additional cascading plug-in (450L-APC-IO-8) at the top
cascading end of the stick enables cascading. Depending on the configuration
of the DIP switches at the connection plug-in module, the functions of the I/Os
at the cascading plug-in can be changed (for example, for muting
applications). The different settings for the pins of the cascading plug-in are
provided in
…
.
Once the 450L-APC-IO-8 cascading plug-in is inserted, the I/Os of the
cascading plug-in provide the option to connect an additional 450L safety light
curtain with an 8-pin connection in series (see
). This
feature allows up to four pairs of 450L-E or 450L PAC safety light curtain
transmitters and receivers to be interconnected in series.
specify the nomenclature that is used for
cascaded systems.
Figure 24 - Nomenclature Used for a Noncascaded Setup
IMPORTANT
Unless you are using either 450L-E firmware 5.004 (min) with interface
rejection enabled, or 450L PAC, cascading with the 450L-APC-IO-8
cascading plug-in requires a minimum distance between two adjacent
cascaded pairs (
See
450L Safety Light Curtain with Interference Rejection on page 75
for more information on interference rejection.
Pair = System
Stick
Содержание Allen-Bradley 140M
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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 ...