Rockwell Automation Allen-Bradley 140M User manual

User Manual Original Instructions
GuardShield 450L POC and
450L PAC Safety Light Curtain
Catalog Numbers 450L-B4FNxYD, 450L-B4HNxYD,
450L-E4FLxYD, 450L-E4HLxYD, 450L-E4AxLxYD

2Rockwell Automation Publication 450L-UM001F-EN-P - March 2022
GuardShield 450L POC and 450L PAC Safety Light Curtain User Manual
Important User Information
Read this document and the documents listed in the additional resources section about installation, configuration, and
operation of this equipment before you install, configure, operate, or maintain this product. Users are required to familiarize
themselves with installation and wiring instructions in addition to requirements of all applicable codes, laws, and standards.
Activities including installation, adjustments, putting into service, use, assembly, disassembly, and maintenance are required to
be carried out by suitably trained personnel in accordance with applicable code of practice.
If this equipment is used in a manner not specified by the manufacturer, the protection provided by the equipment may be
impaired.
In no event will Rockwell Automation, Inc. be responsible or liable for indirect or consequential damages resulting from the use
or application of this equipment.
The examples and diagrams in this manual are included solely for illustrative purposes. Because of the many variables and
requirements associated with any particular installation, Rockwell Automation, Inc. cannot assume responsibility or liability for
actual use based on the examples and diagrams.
No patent liability is assumed by Rockwell Automation, Inc. with respect to use of information, circuits, equipment, or software
described in this manual.
Reproduction of the contents of this manual, in whole or in part, without written permission of Rockwell Automation, Inc., is
prohibited.
Throughout this manual, when necessary, we use notes to make you aware of safety considerations.
These labels may also be on or inside the equipment to provide specific precautions.
The following icon may appear in the text of this document.
WARNING: Identifies information about practices or circumstances that can cause an explosion in a hazardous environment,
which may lead to personal injury or death, property damage, or economic loss.
ATTENTION: Identifies information about practices or circumstances that can lead to personal injury or death, property
damage, or economic loss. Attentions help you identify a hazard, avoid a hazard, and recognize the consequence.
IMPORTANT Identifies information that is critical for successful application and understanding of the product.
SHOCK HAZARD: Labels may be on or inside the equipment, for example, a drive or motor, to alert people that dangerous
voltage may be present.
BURN HAZARD: Labels may be on or inside the equipment, for example, a drive or motor, to alert people that surfaces may
reach dangerous temperatures.
ARC FLASH HAZARD: Labels may be on or inside the equipment, for example, a motor control center, to alert people to
potential Arc Flash. Arc Flash will cause severe injury or death. Wear proper Personal Protective Equipment (PPE). Follow ALL
Regulatory requirements for safe work practices and for Personal Protective Equipment (PPE).
Identifies information that is useful and can help to make a process easier to do or easier to understand.

Rockwell Automation Publication 450L-UM001F-EN-P - March 2022 3
Table of Contents
Preface
Who Should Use This Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Summary of Changes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Terminology. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Additional Resources . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Chapter 1
Product Overview General Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Package Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Firmware Revisions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Chapter 2
Safety Concepts Safety Standards Applied to GuardShield. . . . . . . . . . . . . . . . . . . . . . . . . . 17
Functional Safety Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Safety Certification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Installation Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Possible Misuse . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Chapter 3
Operation Principle of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Laser Alignment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Chapter 4
Safety Function Start Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Automatic (Re) Start (Default) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Manual (Re) Start. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Manual Cold Start . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Manual (Re) Start with Off Function. . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Power Cycle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
External Device Monitoring (EDM) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Low Operating Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Beam Coding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Interference Rejection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Blanking and Reduced Resolution . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Teach-in Fixed Blanking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Teach-in Blanking Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Configuration Process . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Reduced Resolution (Object Number Limited) . . . . . . . . . . . . . . . . . . . . . 32
Resolution with Blanking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Muting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Muting Lamp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Muting Sensors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Mute Dependent Override Function (MDO) . . . . . . . . . . . . . . . . . . . . 36
Two-sensor T-type Muting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

4Rockwell Automation Publication 450L-UM001F-EN-P - March 2022
Table of Contents
Two-sensor L-type Muting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Two-sensor T-type Muting with Enable . . . . . . . . . . . . . . . . . . . . . . . . 40
Four-sensor Muting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Cascading . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Cascading and Blanking. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
Response Time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
Standard Response Time, Ts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
Advanced Feature Response Time, Ta . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
Multiple Scan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
Short Interruption Time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
Cascading Response Time, Tc. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
Connected Components Workbench Response Time. . . . . . . . . . . . 51
Product Labels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
Chapter 5
System Configuration Receiver Plug-in DIP Switch Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
450L-APR-ON-5 Connection Plug-in . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
450L-APR-ED-8 Connection Plug-in . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
450L-APR-BL-5 Connection Plug-in . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
450L-APR-MU-8 Connection Plug-in. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
450L-APR-UN-8 Connection Plug-in . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
Confirmation of a New System Configuration . . . . . . . . . . . . . . . . . . . . . 59
Confirmation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
Confirmation Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
Chapter 6
Installation and Wiring Determine the Safety Distance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
U.S. Safety Distance Formula . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
OSHA Safety Distance Formula . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
ANSI Safety Distance Formula . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
European Safety Distance Formula. . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
Minimum Distance from Reflective Surfaces . . . . . . . . . . . . . . . . . . . 66
Mirrors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
Install and Mount . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
Correct Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
Incorrect Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
Mount Multiple 450L GuardShield Safety Light Curtains . . . . . . . . 72
450L Safety Light Curtain with Interference Rejection . . . . . . . . . . 75
Mounting Brackets. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76
Standard Top/Bottom Mounting Kit. . . . . . . . . . . . . . . . . . . . . . . . . . . 76
Side Mounting Bracket. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78
Shock Mounting Kit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79
Replacement Mounting Kit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80
Electrical Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81
Plug-ins . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81
Plug-in Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82
Transmitter Plug-in. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82
Receiver Plug-in . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83
Cascading . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85

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Table of Contents
Transmitter Cable Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87
Receiver Cable Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87
Cascading Cable Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89
Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89
Grounding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90
External Device Monitoring (EDM) Connection . . . . . . . . . . . . . . . . 90
Restart Button . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91
OSSD Output. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91
OSSD Signal Processing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91
OSSD Restart Time (from OFF to ON) . . . . . . . . . . . . . . . . . . . . . . . . . 92
Test Pulses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92
Typical Wiring Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93
Direct to Contactors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93
Guardmaster SI Safety Relay. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94
T-connector. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95
GuardLink Tap Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95
1732 ArmorBlock Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96
Two-sensor Muting with Muting Plug-in. . . . . . . . . . . . . . . . . . . . . . . 98
Four-sensor Muting with Muting Plug-in . . . . . . . . . . . . . . . . . . . . . . 99
Chapter 7
Status Indicators and
Troubleshooting
Status Indicators. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101
System Status Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101
Status Indicator for Normal Operation . . . . . . . . . . . . . . . . . . . . . . . 102
Optical Push Button . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103
Troubleshoot . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103
Status Indicator Error Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103
Optical Interface Device (OID) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 106
Troubleshoot with Connected Component
Workbench Software . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107
Chapter 8
Safety Instructions Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109
Regular Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109
Verifying 450L PAC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111
Clean Optic Front Window . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111
Disposal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111
Product Labels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111
Stick Labels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112
Plug-in Label . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113
Chapter 9
Connected Components
Workbench Software
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115
Multiple Subconfigurations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115
Start a New Project . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115
Workbench Layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 118
Project Organizer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 119
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 119

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Hardware. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120
DIP Switch. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120
USB Status. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 121
Subconfigurations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 121
General Settings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 121
GPIO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 123
Diagnose Window . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 127
Export. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 127
Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 128
Lock. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 128
Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 128
Teach . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 128
Laser. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 129
Beam Status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 129
Two-sensor Muting Schematic Example. . . . . . . . . . . . . . . . . . . . . . . . . . 130
Muting Type and Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 131
GPIO Selection and Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 133
Four-sensor Muting Schematic Example . . . . . . . . . . . . . . . . . . . . . . . . . 134
Hardware. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 135
Muting Type and Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 135
GPIO Selection and Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 136
Blanking Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 139
Lens Identification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 139
Zones. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 140
Configuration Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 142
Fixed Blanking. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 142
Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 142
Fixed Blanking Rules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 143
Teach Blanking Zones. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 143
Process Details . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 144
Floating Blanking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 148
Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 148
Floating Blanking Rules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 149
Object Height . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 149
Reduced Resolution Blanking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150
Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150
Reduced Resolution Blanking Rules . . . . . . . . . . . . . . . . . . . . . . . . . . 151
Object Height . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 152
Download and Upload Configurations . . . . . . . . . . . . . . . . . . . . . . . . . . . 153
Change Hardware . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 156
Share Your Project (Export/Import). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 158
Export Project to a Connected Components
Workbench Software Archive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 158
Import Project from a Connected Components
Workbench Software Archive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 159
Export Device to Zip File . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 160
Import a Zip File. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 162
Update Firmware . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 162

Rockwell Automation Publication 450L-UM001F-EN-P - March 2022 7
Table of Contents
Appendix A
Specifications Safety Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 165
Operating Characteristics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 165
Inputs Receiver Plug-in, Cascading Plug-in,
and Universal Plug-in . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 166
Safety Outputs (OSSDs): Receiver Plug-in . . . . . . . . . . . . . . . . . . . . . . . . 167
Status Outputs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 167
Environmental and General Protection . . . . . . . . . . . . . . . . . . . . . . . . . . 167
Electrical Protection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 167
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 168
Certifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 168
Compliance with European Union Directives. . . . . . . . . . . . . . . . . . 169
Approximate Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 169
Product Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 171
Sticks. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 171
450L PAC Catalog Number Explanation. . . . . . . . . . . . . . . . . . . . . . . 172
Plug-ins . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 173
Optional Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 174
Corner Mirror. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 175
Mounting Columns . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 177
Alignment Tool and Bracket . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 178
Weld Shields . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 179
Cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 179
Appendix B
Typical Installations Safety Light Curtain Mounted Vertically . . . . . . . . . . . . . . . . . . . . . . . . . 181
Safety Light Curtain Mounted Horizontally . . . . . . . . . . . . . . . . . . . . . . 181
Fixed Blanking Application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 182
Cascading Application. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 183
Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 185

8Rockwell Automation Publication 450L-UM001F-EN-P - March 2022
Table of Contents
Notes:

Rockwell Automation Publication 450L-UM001F-EN-P - March 2022 9
Preface
This manual is a reference guide for the 450L-B and 450L-E POC and the 450L
GuardShield™ PAC Safety Light Curtains. It describes the procedures to install,
wire, and troubleshoot the safety light curtains.
Who Should 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:
• Undergo the appropriate technical training
• The responsible machine operator must instruct personnel in the
operation of the machine and the current safety guidelines.
• You must read and have access to the user manual.
Qualified personnel must install the light curtain and only use the light curtain
on that specific machine.
Summary of Changes Topic Page
Added 450L PAC safety light curtain information Throughout
Added interference rejection information Throughout
Updated Additional Resources.10
Updated Table 19 50
Updated Mount Multiple 450L GuardShield Safety Light Curtains 72
Updated Plug-in Label 113
Updated Optional Accessories 174
Updated Table 77 167
Updated Table 81 175
Updated Table 82 176

10 Rockwell Automation Publication 450L-UM001F-EN-P - March 2022
Preface
Terminology
Additional Resources These documents contain additional information concerning related products
from Rockwell Automation.
You can view or download publications at rok.auto/literature.
Abbreviation Definition
DoC Declaration of Conformity
EDM External Device Monitoring
ESPE Electro-sensitive protective equipment
FSD Final switching device
NC Not connected
NEC National Electric Code (U.S.)
OID Optical Interface Device
OSSD Output Signal Switching Device: Typically designates a pair of solid-state signals that are pulled up to the DC source supply. The signals are tested for short circuits to the DC power supply, short
circuits to the DC common, and short circuits between the two signals.
PAC Perimeter Access Control: A safety light curtain that is designed for whole body detection to
create a safety perimeter around a machine.
POC
Point of Operation Control: A safety light curtain that is designed for installation close to the
hazard where personnel could frequently interact with the machine as part of the process. These
safety light curtains are therefore designed for partial body detection. The 450L safety light
curtain family offers finger and hand detection.
PL Performance Level
QD Quick disconnect
RB Restart button
Rx Receiver
SIL Safety integrity level
Tx Transmitter
Resource Description
450L GuardShield Safety Light Curtain Quick Start,
publication 450L-QS001 Provides a quick start information to configure and run a
system using 450L Safety Light Curtains.
GuardShield 450L-B Safety Light Curtain Package
Content, publication 450L-PC001 Provides installation information for 450L Safety Light
Curtain replacement units.
450L GuardShield Light-Curtain Weld-Shield
Installation Instructions, publication 450L-IN001 Provides installation information for weld shield kits.
Side Mount Bracket Set for GuardShield Light Curtains
Installation Instructions, publication 450L-IN002 Provides installation information for side mount brackets.
GuardShield Light Curtain Optical Interface Device
Installation Instructions, publication 450L-IN003 Provides installation information for the optical interface
device.
GuardShield Safety Light Curtain Installation
Instructions, publication 450L-IN004 Provides installation information for 450L-B and 450L-E
POC Safety Light Curtains.
GuardShield Muting Distribution Block Installation
Instructions, publication 450L-IN005 Provides installation information for the 450L Muting Distribution Block.
GuardShield Safety Light Curtain Status Light
Installation Instructions, publication 450L-IN007 Provides installation information for the 450L Status Light.
GuardShield 450L PAC Safety Light Curtain
Installation Instructions, publication 450L-IN009 Provides installation information for the 450L PAC Safety
Light Curtains.
Safety Book 5, Safety-related Control Systems for
Machinery, publication SAFEBK-RM002 Provides principles, standards, and implementation of safety-related control systems for machinery.
Industrial Automation Wiring and Grounding
Guidelines, publication 1770-4.1 Provides general guidelines for installing a
Rockwell Automation® industrial system.
Product Certifications website: rok.auto/
certifications Provides declarations of conformity, certificates, and other certification details.

Rockwell Automation Publication 450L-UM001F-EN-P - March 2022 11
Chapter 1
Product Overview
General Description The 450L GuardShield™ safety light curtain family consists of general-purpose
presence sensing devices that are designed for use on hazardous machinery
for both Perimeter Access Control (PAC) and Point of Operation Control (POC)
applications. The product family is certified as Type 4 electro-sensitive
protective equipment (ESPE) (as defined by EN 61496-1 and IEC 61496-2). This
certification allows this product to be used in applications that require PLe
category 4 according to EN ISO 13849-1.
The 450L PAC safety light curtains are based on the 450L-E POC safety light
curtain models and are offered in single-beam (Area Access Control [AAC]), 2-
beam, 3-beam, and 4-beam options and range in length from 150…1050 mm
(5.91…41.34 in.).
The 450L POC safety light curtains are offered in multiple lengths from
150…1950mm (5.9…76.77 in.) in increments of 150 mm (5.9 in.). Each length is
available in finger (14 mm [0.56 in.]) or hand (30 mm [1.19 in.]) resolution with a
basic set of sensing functions.
The 450L POC safety light curtain family consists of two product lines:
• 450L-B (Basic)
• 450L-E (Enhanced)
The 450L-B safety light curtain is suitable for basic ON/OFF applications,
whereas the 450L-E safety light curtain provides enhanced features for more
sophisticated applications. Table 1 provides an overview of the differences
between the two product versions:
Table 1 - Differences Between 450L-B and 450L-E/450L PAC Safety Light Curtain Systems
Description 450L-B 450L-E and 450L PAC
Alignment aid Two zone indicator light-emitting
diode (LED) Integrated laser alignment and two zone indicator LED
Operation range finger
resolution, min…max 0.5…4 m (1.6…13.12 ft) 0.5…9.0 m (1.64…29.53 ft)(1)
(1) Not applicable for 450L PAC, which is based on 450L-E hand resolution.
Operation range hand
resolution, min…max 0.9…7.0 m (2.95…22.97 ft) 0.9…16.2 m (2.95…53.15 ft)
Functionality Start modes External device monitoring (EDM)
Operation range
Start modes
EDM
Operation range
Beam coding
Blanking(2)
Muting
Cascading
(2) Blanking is not available on 450L PAC safety light curtain models.
CIP Safety™
functionality(3)
(3) Only with appropriate plug-in and module. CIP safety is not available on 450L PAC models
Yes Yes

12 Rockwell Automation Publication 450L-UM001F-EN-P - March 2022
Chapter 1 Product Overview
The two 450L safety light curtain versions have no differences in cross section,
protective heights and resolutions, sealing, operating and storage
temperature, and length passive zones at the ends of each stick and mounting
options. The 450L PAC safety light curtain also has the same cross section,
sealing, operating and storage temperatures, and mounting options.
What makes each GuardShield light curtain system unique from other safety
light curtain transmitter and receiver solutions is that it consists of two
identical transceiver sticks. These safety light curtains are not designated as
transmitter or receiver right out-of-the-box. The configuration of a stick as a
transmitter or a receiver is done by inserting either:
• A dedicated transmitter or receiver plug-in into the transceiver sticks
• A universal plug-in module in each transceiver stick, which allows a
selection for the transmitter or the receiver function by wiring.
The GuardShield 450L POC safety light curtains are designed as a two-box
system, which has no inactive sensing area or dead/blind zones at the top and
bottom of each stick. This design allows a perfect and easy integration in
individual machine designs.
The GuardShield 450L PAC safety light curtains are also designed as a two-box
system. By design, PAC systems are produced with several single-beam light
barriers or, for 450L PAC safety light curtains, a combination of active and
passive elements in accordance with EN ISO 13855 [2010].
Figure 1 - 450L PAC Front View - Active and Passive Zones (2-beam model used for illustration)
Figure 2 - 450L PAC Beam Heights
Selectable function depends on the installed receiver plug-in, which can be
inserted in a GuardShield safety light curtain transceiver stick. Different
operation modes can be selected via the DIP switch on the receiver plug-ins.
Distance to reference plane (for example, ground)
1st beam
1st beam 1st beam 1st beam
2nd beam
2nd beam
2nd beam
3rd beam
3rd beam
4th beam

Rockwell Automation Publication 450L-UM001F-EN-P - March 2022 13
Chapter 1 Product Overview
Depending on the type of plug-in that is installed in a GuardShield stick, the
system offers:
• Connectivity to ArmorBlock® Guard I/O™ (5-pin M12 QD) for network
connectivity providing CIP Safety™ over DeviceNet™ or EtherNet/IP™
(not applicable for 450L PAC safety light curtain models).
• Auto or manual start modes
• External device monitoring (EDM)
•Beamcoding
• Muting, blanking, and cascading capabilities (only for the 450L-E safety
light curtain)
Recognized technical regulations and ISO 9001 quality assurance procedures
are carefully applied during the development and production of Allen-Bradley®
GuardShield products.
Figure 3 - Compatibility Limitations
Figure 4 - Assembly Overview for the 450L-B Safety Light Curtain System
LASER LIGHT CLASS 2 HAZARD: Do not stare into the beam. The 450L-E
safety light curtains are equipped with an integrated laser alignment help
option (see Laser Alignment on page 23).
IMPORTANT 450L-B safety light curtain transceiver stick cannot operate with a
450L-E safety light curtain transceiver stick. 450L PAC safety light
curtain transceiver stick cannot operate with a 450L POC safety light
curtain transceiver stick of either kind.
2 x 450L-B
1 x 450L-B
1 x 450L-E
2 x 450L-E
1 x 450L PAC
1 x 450L POC
2 x 450L PAC
Standard
Mounting
Bracket
Transceiver
Sticks
Inserted Plug-ins
Connection
Plug-in
Inserted Connection
Plug-ins

14 Rockwell Automation Publication 450L-UM001F-EN-P - March 2022
Chapter 1 Product Overview
Figure 5 - Assembly Overview for the 450L PAC and 450L-E POC Safety Light Curtain System
A 450L-E and 450L PAC safety light curtain also provides the option to insert a
cascading plug-in into the opposite stick end at the gray slot cover (see
Cascading on page 43 and Figure 7 on page 15).
Package Contents A GuardShield safety light curtain is normally shipped as an individual
component (single transceiver). A functional system includes four individual
boxes.
Figure 6 - Contents of 450L POC Safety Light Curtain Transceiver Stick Box
Standard Mounting
Bracket
450L-ETransceiver
Sticks
Inserted Connection
Plug-ins
Cascading Plug-in
(Optional)
Connection Plug-in
Table 2 - List for a Complete System
Item Required Quantity Description Remark
12
450L GuardShield
safety light curtain
transceiver stick
Each box contains:
•Onestick
• Mounting kit (top and bottom)
• Test rod
• Short instruction manual
2 1 Transmitter plug-in 150 mm (5.9 in.) pigtail with M12 QD connector (convex)
3 1 Receiver plug-in 150 mm (5.9 in.) pigtail with M12 QD connector (convex)
Transceiver Stick Standard Mounting Kit
Test Rod
Installation
Instruction

Rockwell Automation Publication 450L-UM001F-EN-P - March 2022 15
Chapter 1 Product Overview
Figure 7 - Plug-ins
Transmitter Connection Plug-in, No
DIP Switches, 5-pin or 8-pin M12 QD
Receiver and Universal Connection
Plug-in, with DIP Switches, 5-pin or
8-pin M12 QD
Cascading Plug-in (Catalog Number
450L-APC-IO-8), No DIP Switches,
8-pin M12 QD

16 Rockwell Automation Publication 450L-UM001F-EN-P - March 2022
Chapter 1 Product Overview
Firmware Revisions The feature list of the 450L-B and of the 450L-E safety light curtains
continuously expands. Table 3 on page 16 lists the components that have
firmware that can be upgraded using ControlFLASH™ software.
For maintenance reasons, a 450L safety light curtain stick with an old
firmware version can be operated with a 450L safety light curtain stick with
newer firmware.
Table 3 - Firmware Revisions of 450L Safety Light Curtains
Family Version Description
450L-B
1.001 Initial Release. Does not support Connected Components Workbench™
software.
2.001 Support Connected Components Workbench software diagnosis and
connection with T-connector. Can be used as the last pair of cascading.
3.001 Same feature as 2.001 but 4K security key. Engineering version only - not
released to users.
4.001 Support Connected Components Workbench software diagnosis.
5.001 Same feature as 4.001 4K security key.
5.002 Initial release to support CIP Safety functionality.
5.003 Engineering version only - not released to users.
5.004 Introduction of interference rejection option.
450L-E
2.001
Initial release and supports Connected Components Workbench software
diagnosis. Supports Safety Override, Dry Contact Switch, and E-stop.
Cascaded light curtains Tx side cannot use universal plug-in, the host pairs
can still use universal plug-in.
3.001 Same feature as 2.001. Engineering version only - not released to users.
4.001 Support Connected Components Workbench software diagnosis and
configuration. Not backward compatible with 450L-APC-IO-8.
5.001 Same feature as 4.001 4K security key.
5.002 Initial release to support CIP Safety functionality.
5.003 Engineering version only - not released to users.
5.004 Introduction of interference rejection option.
450L PAC 1.001 Initial Release. Does not support Connected Components Workbench
software, or Studio 5000® (CIP Safety).
450L-APC-IO-8
1.001 Initial Release.
2.001 Allows 450L-APU-UN-8 to be used as a transmitter in a cascaded stick.
3.001 Same feature as 2.001.
4.001 Backward compatible with LC.
5.001 Same feature as 4.001 4K security key.
450L-OID
1.001
Initial Release, does not support the 450L-E safety light curtain. If you get a
message, “The connection to the 450L safety light curtain will be terminated
because of repeatedly mismatched checksum calculation errors” then
upgrade the FW to 1.002 or later.
1.002 Support LC Diagnosis and FW update.
3.001 Backward compatible with LC. It supports LC FW 3.001 diagnosis, FW update, reset, confirm, and blanking teach command. Added 4K key certificate
support.
4.001 Backward compatible with LC. Example: 2.001, 3.001, 4.001 LC can work with
5.001 OID, but 3.001, 4.001 OID cannot work with 5.001 LC.
5.001 Backward compatible with LC 4K security key.

Rockwell Automation Publication 450L-UM001F-EN-P - March 2022 17
Chapter 2
Safety Concepts
This section describes the safety Performance Level concept and explains how
the 450L safety light curtains meet the requirements for SIL 3 and PLe for
Category 4 architectures.
Safety Standards Applied to
GuardShield
The 450L safety light curtain satisfies applicable requirements in the following
standards that are related to functional and machinery assembly:
• IEC 61496-1/-2 (Type 4)
•IEC61508(SIL3)
• IEC 62061 (SIL CL 3)
• EN/ISO 13849-1 (Performance Level e (PLe), Category 4)
•UL508
The 450L-E safety light curtain satisfies applicable requirements that are
provided in IEC 60825-1 for the integrated laser alignment aid (see Laser
Alignment on page 23).
Published dates of the individual standards are given in the Declaration of
Conformity (see rok.auto/certifications).
Functional Safety Data The functional safety data are listed in Table 72 on page 165. These values refer
to the longest light curtain system length (1950 mm [76.77 in.]) with the
smallest resolution (14 mm[0.55 in.]).
For cascaded 450L-E safety light curtain applications, the final PFH value of
the complete system is the sum of the individual PFH values of each pair plus
the sum of the PFH values of the cascading plug-in.
The following example (Figure 8) shows the calculation of the PFH of a
cascaded system with 450L-E safety light curtain and two cascading plug-ins.
Figure 8 - Example and PFH Calculation of Cascaded Systems
PFH (total) = 3x PFH (450L pair) + 2 x PFH (cascading plug-in)
IMPORTANT For 450L-E safety light curtains, if cascading the PFH of each cascade
and each cascading plug-in must be considered.
Pair 1 Pair 2 Pair 3
Cascading
Plug-in 1
Cascading
Plug-in 2

18 Rockwell Automation Publication 450L-UM001F-EN-P - March 2022
Chapter 2 Safety Concepts
Safety Certification Each 450L safety light curtain is a Type 4 ESPE as defined by IEC61496-1 and
CLC/TS 61496-2. The safety light curtains are allowed for use with controls in
compliance with these certifications.
• PLe (in a Category 4 architecture) in compliance with EN ISO 13849
• SIL CL3 in accordance with EN 62061
• SIL 3 in accordance with IEC 61508
Safety requirements are based on the standards applicable at the time of
certification with a proof test interval of 20 years.
The device is suitable for the following:
• Point of Operation Control (POC) finger- and hand-detection
• Hazardous area protection
• Access protection
Access to the hazardous point must be allowed only through the protective
field. The machine/system is not allowed to start as long as personnel are
within the hazardous area (see Correct Installation on page 70).
Depending on the application, mechanical protective devices are potentially
required in addition to the safety light curtain.
TÜV Rheinland has approved the 450L GuardShield™ safety light curtains for
use in safety-related applications where Performance Level (PL) up to e and
safety integrity level up to SIL 3 are required.
TÜV Rheinland confirmed that the integrated laser alignment aid in 450L-E
GuardShield safety light curtains conforms to the classification of laser class
two according to IEC 60825-1.
The national/international rules and regulations apply to the installation, use,
and periodic technical inspections of the safety light curtain, in particular:
• Machine Directive
• Low Voltage Directive
• Equipment Usage Directive
• Work safety regulations/safety rules
• Other relevant health and safety regulations
Published dates of the individual standards are given in the Declaration of
Conformity (see Compliance with European Union Directives on page 169).
Manufacturers and users of the machine with which the safety light curtain is
used are responsible for obtaining and observing all applicable safety
regulations and rules:
• The notices, in particular the test regulations of this user manual (for
example, on use, mounting, installation, or integration into the existing
machine controller) must be observed.
• Specialist personnel or specially qualified and authorized personnel
implement the tests and must record and document that the tests can be
reconstructed and retraced at any time.
• This user manual must be made available to the user of the machine
where the GuardShield safety light curtain is installed. The machine
operator is instructed in the use of the device by specialist personnel.
IMPORTANT Observe the following directives, rules, and regulations to help conform
to proper and safe use of the GuardShield safety light curtain.

Rockwell Automation Publication 450L-UM001F-EN-P - March 2022 19
Chapter 2 Safety Concepts
Installation Requirements The GuardShield safety light curtains must be installed in accordance with
applicable regulations and standards.
While the GuardShield safety light curtains can be used for SIL 3, PLe, and
Category 4 applications, the installer must comply with the minimum (safe)
distance requirements. For example, according to EN ISO 13855, if installed in
the European Union.
The installed system, including the safety control system and the means by
which the machine stops, must achieve the needed safety Performance Level.
The GuardShield safety light curtains are only one element in the safety
system. Additional guidance can be found in publication SAFEBK-RM002).
Possible Misuse GuardShield safety light curtains are used as electro-sensitive protective
equipment in the sense of the Machinery Directive. These devices are only used
in applications such as:
•POCdevice
• Access control device
• Hazardous area control device
• Machines, which eject materials, swarf, or component parts
• Risk of injury from thermal or other radiation
• Unacceptable noise levels
• Transparent objects are detected
• An environment, which exceeds the specification, limits provided in
Specifications on page 165.
Some, but not all, possible limits are electrostatic discharge, radio frequency
interference, vibration/shock, ambient light, pollution, temperature, and
humidity.
Without additional measures (IEC 62998), GuardShield safety light curtains
are not designed to be used for the following applications:
• Outdoors
•Underwater
• Explosive atmospheres
• Altitudes over 3000 m (1.86 miles) above sea level
• With enhanced ionizing or radar radiation.
ATTENTION: The following applications and/or environmental conditions can
lead to misuse and potentially cause severe injuries or death (for more
information see IEC 62046).

20 Rockwell Automation Publication 450L-UM001F-EN-P - March 2022
Chapter 2 Safety Concepts
Notes: