Rockwell Automation Publication 450L-UM001D-EN-P - December 2019 9
Preface
This manual is a reference guide for the 450L-B and 450L-E GuardShield™ Safety
Light Curtains. It describes the procedures to install, wire, and troubleshoot the
safety light curtains.
Who Would Use This Manual
Use this manual if you design, install, program, or troubleshoot systems that use
the 450L GuardShield safety light curtain.
You must have a basic understanding of electrical circuitry and familiarity with
safety-related systems. If you do not, obtain the proper training before using this
product.
Qualified personnel must conduct all inspections. A qualified person must
perform these tasks:
• Undergone the appropriate technical training
• The responsible machine operator has instructed personnel in the
operation of the machine and the current safety guidelines.
• Has read and has access to the user manual.
Qualified personnel must install the light curtain and only use it on that specific
machine.
Summary of Changes
Topic Page
Updated Terminology table. 10
Updated Table 3
.15
Updated Figure 10.25
Updated Low Operating Range section 29
Changed Mute Fault Override Function (MFO) to Mute Dependent Override Function (MDO). 40
Updated Two-sensor T-type Muting section. 41
Added Two-sensor L-type Muting with Enable section. 44
Updated Cascading section. 48
Updated Response Time section. 52
Made System Configuration its own chapter. 59
Updated Table 2 3
.62
Added Plug-in Installation section. 89
Updated Transmitter Plug-in section. 90
Updated Receiver Plug-in section. 91
Updated Power Supply section. 98
Added Grounding section. 98
Updated footnote under Figure 65
.101
Updated figures and text throughout the Typical Wiring Diagram section. 102…110
Added GuardLink Tap Connections section. 105
Added marking symbols to Table 52
.115
Updated Table 7 1
.189
Updated Corner Mirror catalog numbers. 198
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