Rockwell Automation Allen-Bradley Guardmaster 440R-GL2S2P User manual

User Manual Original Instructions
Guard Locking Proximity
Inputs Safety Relay
Catalog Number 440R-GL2S2P

2Rockwell Automation Publication 440R-UM012F-EN-P - October 2022
Guard Locking Proximity Inputs Safety Relay 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 440R-UM012F-EN-P - October 2022 3
Table of Contents
About This Publication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Who Should Use This Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Firmware Revision History . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Summary of Changes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Additional Resources . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Chapter 1
Overview Hardware Features. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Logic Functions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Logic Setting 1 - Cat 1 Stop, Logic IN Off . . . . . . . . . . . . . . . . . . . . . . . 10
Logic Setting 2 - Cat 1 Stop with Logic IN . . . . . . . . . . . . . . . . . . . . . . 10
Logic Setting 3 - Safe Limited Slow Speed, Logic IN Off . . . . . . . . . 11
Logic Setting 4 - Safe Limited Slow Speed with Logic IN . . . . . . . . . 11
Logic Setting 5…8 - Guard Locking with Delayed Unlock and
Automatic Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Logic Setting 8 - Speed Status Only. . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Chapter 2
Installation Mounting Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
DIN Rail Mounting and Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Spacing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Removable Terminals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Enclosure Considerations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Help Prevent Excessive Heat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Chapter 3
Power, Ground, and Wire Wiring Requirements and Recommendation . . . . . . . . . . . . . . . . . . . . . . 17
Wire Size . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Terminal Torque . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Terminal Assignments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Ground the Controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Connect a Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Proximity Sensor Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Guard Locking Connections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Devices with Mechanical Contacts . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Safety Devices with OSSD Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Unlock Request Input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Lock and Reset Request Input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Lock and Unlock Signals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Lock Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
TLS3-GD2 Guard Locking Switch Connections . . . . . . . . . . . . . . . . . 22
TLS-Z Guard Locking Switch, 440G-LZ Guard Locking Switch, and
MAB Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Single Wire Safety (SWS) Connections . . . . . . . . . . . . . . . . . . . . . . . . 23

4Rockwell Automation Publication 440R-UM012F-EN-P - October 2022
Multiple Guard Locking Devices and Power to Lock . . . . . . . . . . . . . 23
No Guard Locking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Safety Outputs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Single Wire Safety (SWS) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Chapter 4
Configuration Logic Switch Settings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
SLS1 Switch Setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Case 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Case 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
SLS2/Time Switch Setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Configuration Process. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Chapter 5
Diagnostic Status Indicators
and Troubleshooting
Status Indicators During Power-up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Status Indicators During Normal Operation. . . . . . . . . . . . . . . . . . . . . . . 31
Status Indicators During Diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Chapter 6
Pulse Testing Functions Introduction to Pulse Testing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Pulse Testing for Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Test of OSSD Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Chapter 7
Ethernet Communication Webpage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Logix AOP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Chapter 8
Proximity Sensors and Targets Proximity Sensor Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Proximity Sensor Targets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Chapter 9
Example Operational Sequence
Diagrams
Stop Cat 1 Example. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Example Schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Sequence Diagram. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
Sequence Steps. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
Example with EMSS Contacts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
Example Schematic with Mechanical Guard Locking Outputs. . . . 45
SLS Example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
Example Schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
Sequence Diagram. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
Sequence Steps. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
Delayed Unlock with Auto Reset Example . . . . . . . . . . . . . . . . . . . . . . . . . 50
Example Schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
Sequence Diagram. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
Sequence Steps. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
Status Only Example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52

Rockwell Automation Publication 440R-UM012F-EN-P - October 2022 5
Example Schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
Sequence Diagram. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
Sequence Steps. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
Appendix A
Specifications General Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
Environmental Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
Input IN1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
Proximity Sensor Signals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
Lock Unlock Request . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
Lock Unlock Signals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
Auxiliary Signal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
Single Wire Safety Input Signal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
Single Wire Safety Output Signal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
Safety/Pulse Test Outputs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
Response Times. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
Appendix B
Regulatory Approvals Agency Certifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
Declaration of Conformity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
CE Conformity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
UKCA Conformity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
SIL Rating. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
Performance Level/Category . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .63

6Rockwell Automation Publication 440R-UM012F-EN-P - October 2022
Notes:

Rockwell Automation Publication 440R-UM012F-EN-P - October 2022 7
Preface
About This Publication This manual is a reference guide for the Guard Locking Proximity (GLP) safety
relay, plug-in modules, and accessories. This manual describes the procedures
to install, wire, and troubleshoot your controller. This manual also explains
how to install and wire your controller. It also gives you an overview of the GLP
controller system.
Who Should Use This
Manual
Use this manual if you are responsible for the design, installation,
programming, or troubleshooting of control systems that use the guard
locking with proximity (GLP) safety relay.
You must have a basic understanding of electrical circuitry and familiarity
with safety-related control systems. If you do not, obtain the proper training
before using this product.
Firmware Revision History
Definitions Publication AG-7.1 contains a glossary of terms and abbreviations that are used
by Rockwell Automation to describe industrial automation systems. Table 1
includes specific terms and abbreviations that are used in this manual.
Series Firmware Description
A 100 Initial release. Logic settings 1…4 functions only; 5…8 reserved for future use.
A 202 Added logic settings 5…8 (CU2 functionality).
A 203 New microprocessor technology (no change for user).
A204
CU2 functionality removed. Internal testing revealed an undetected proximity
sensor fault. Affected manufacturing date codes from 1601…1707.
A 205 CU2 functionality restored.
A 206 Additional EMC filtering for proximity sensors.
Table 1 - Terms and Abbreviations
Term Description
AOP Add-on Profile
N.C. Normally Closed - An electrical contact whose normal state (for example, no pressure
or electrical potential applied) is in the closed position.
N.O. Normally Open - An electrical contact whose normal state (for example, no pressure or
electrical potential applied) is in the open position.
Reaction Time Describes the time between the true states of one input to the on state of the output.
Recovery Time Describes the time that is required for the input to be in the LO state before returning
to the HI state.
Response Time Describes the time between the trigger of one input to the off state of the output.
OSSD Output Signal Switching Device - Typically 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 shorts circuits between the two signals.
SLS Safety-limeted Speed
SWS Single Wire Safety - A unique, safety-rated signal that is sent over one wire to indicate a safety status. Use the SWS in Category 4, Performance Level e, per ISO 13849-1 and
safety integrity level (SIL) 3, per IEC 62061 and IEC 61508.

8Rockwell Automation Publication 440R-UM012F-EN-P - October 2022
Preface
Summary of Changes This publication contains the following new or updated information. This list
includes substantive updates only and is not intended to reflect all changes.
Additional Resources These documents contain additional information concerning related products
from Rockwell Automation.
You can view or download publications at rok.auto/literature.
Topic Page
Updated Agency Certifications 59
Updated TLS3-GD2 Guard Locking Switch Connections 22
Updated TLS-Z Guard Locking Switch, 440G-LZ Guard Locking Switch, and MAB Connections 22
Added Single Wire Safety (SWS) Connections 23
Updated SLS1 Switch Setting 27
Updated Table 6 30
Updated Proximity Sensor Targets 39
Updated Example with EMSS Contacts 45
Updated Table 15 57
Updated Regulatory Approvals 59
Resource Description
Next Generation Guardmaster Safety Relay (GSR) Wiring Diagram,
publication SAFETY-WD001 Provides example wiring diagrams for applications using Guadmaster® safety relays.
Allen-Bradley® Industrial Automation Glossary, publication AG-7.1 A glossary of industrial automation terms and abbreviations.
Safety Guidelines for the Application, Installation, and Maintenance of
Solid-state Control, publication SGI-1.1
Designed to harmonize with NEMA Standards Publication No. ICS 1.1-1987 and provides
general guidelines for the application, installation, and maintenance of solid-state control in
the form of individual devices or packaged assemblies incorporating solid-state
components.
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 440R-UM012F-EN-P - October 2022 9
Chapter 1
Overview
Hardware Features The Guard Locking Proximity (GLP) inputs special-purpose safety relay is
designed to use proximity sensors to detect the safe speed of a machine. The
GLP safety relay issues lock or unlock commands to a guard locking interlock,
which are based on the speed of the signals that the proximity sensors emit.
The GLP safety relay has three rotary switches for you to set its configuration.
A logic switch sets the functionality. Two other switches set speed limits and
time delay: Switch SLS1 sets the safe limited slow speed. Switch SLS2 sets the
Safe Maximum Speed limit, or a percentage of the timing range.
Figure 1 - GLP Safety Relay
Five status indicators provide status and diagnostic information.
The GLP safety relay has four removable terminal blocks; two on the top and
two on the bottom.
The optical communication bus is on the sides of the housing. The GLP safety
relay operates with the EtherNet/IP™ network interface (catalog number
440R-ENETR) to transmit its status to the machine control system over an
EtherNet/IP network.
Table 2 - Status Indicator Information
Indicator Description
PWR/Fault Indicates that power is applied or a fault condition
IN1 Indicates that the safety gate is closed, input valid.
51/L61 Indicates that power is applied to unlock the guard locking interlock.
Logic IN Indicates the presence of the Single Wire Safety input signal.
X14/X24 L11 Indicates that the safety outputs are on.
Removable terminal blocks
Five status indicators for status and diagnostics
SLS1 sets the safe limited slow speed
Logic switch sets functionality
SLS2/Time sets the maximum safe speed
or percentage of time delay
Optical communication bus

10 Rockwell Automation Publication 440R-UM012F-EN-P - October 2022
Chapter 1 Overview
Use the single wire safety (SWS) connection to operate the GLP safety relay
with other safety relays in the GSR family. When the GLP safety relay receives
an SWS signal from other GSR relays, the GLP safety relay issues an unlock
command. When the GLP safety relay turns on its safety output, it also turns
on its SWS output for use by other GSR safety relays.
Logic Functions You can configure the GLP safety relay to operate in one of eight logic safety
functions.
Logic Setting 1 - Cat 1 Stop, Logic IN Off
Initiate a stop command by pressing the Unlock push button. The GLP safety
relay issues an immediate stop command from the Y32 auxiliary output to the
machine control system. When the GLP safety relay determines that the
proximity sensor speed has dropped below the SLS1 setting, it starts the
Frequency Measuring Timer that SLS1 specifies. If the proximity sensor speed
remains below the SLS1 setting, the GLP safety relay turns off its safety outputs
and powers the guard locking interlock through 51 and L61 to unlock the gate.
If the proximity sensor speed does not decrease below the SLS1 setting, the
GLP safety relay continues to wait, the 51/L61 status indicator flashes, and the
safety gate remains locked. Once the proximity sensor speed drops below SLS1
setting, the GLP safety relay begins the Frequency Measurement timer. The
proximity sensor speed must remain below SLS1 during the Frequency
Measurement timer.
The SWS signal at wiring terminal L12 is ignored.
Logic Setting 2 - Cat 1 Stop with Logic IN
To initiate a stop command, either press the Unlock push button or turn off the
single-wire safety signal at wiring terminal L12. The GLP safety relay issues an
immediate stop command from the Y32 auxiliary output to the machine
control system. When the GLP safety relay determines that the proximity
sensor speed has dropped below the SLS1 setting, it starts the Frequency
Measuring Timer that SLS1 specifies. If the proximity sensor speed remains
below the SLS1 setting, the GLP safety relay turns off its safety outputs and
powers the guard locking interlock through 51 and L61 to unlock the gate.
If the proximity sensor speed does not decrease below the SLS1 setting, the
GLP safety relay continues to wait, the 51/L61 status indicator flashes, and the
safety gate remains locked. Once the proximity sensor speed drops below SLS1
setting, the GLP safety relay begins the Frequency Measurement timer. The
proximity sensor speed must remain below SLS1 during the Frequency
Measurement timer.
If the Reset button is pressed within the Frequency Measuring Time, the GLP
safety relay turns the Y32 auxiliary output back on.
If the SWS input turns back on or if the Reset button is pressed within the
Frequency Measuring Time, the GLP safety relay turns the Y32 auxiliary output
back on.

Rockwell Automation Publication 440R-UM012F-EN-P - October 2022 11
Chapter 1 Overview
Logic Setting 3 - Safe Limited Slow Speed, Logic IN Off
Initiate a slow speed command by pressing a momentary push button. The
GLP safety relay issues a slow speed command to the machine control system
by turning on terminal Y32. When the GLP safety relay determines that the
speed of the proximity signals is less than the SLS1 setting, the GLP safety relay
issues an unlock command to the guard locking interlock, while keeping its
safety outputs on. If the speed of the machine exceeds the SLS1 setting, the
GLP safety relay turns it safety outputs off.
The single wire safety signal at wiring terminal L12 is ignored.
Logic Setting 4 - Safe Limited Slow Speed with Logic IN
The single wire safety signal at wiring terminal L12 must be active to turn on
the GLP safety relay outputs.
Initiate a slow speed command by pressing the Unlock push button. The GLP
safety relay issues a slow speed command to the machine control system by
turning on terminal Y32. When the GLP safety relay determines that the speed
of the proximity signals is less than the SLS1 setting, the GLP safety relay issues
an unlock command to the guard locking interlock, while keeping its safety
outputs on. If the speed of the machine exceeds the SLS1 setting, the GLP
safety relay turns it safety outputs off.
When the single wire safety signal at terminal L12 becomes inactive, the GLP
safety relay initiates a shutdown. If the machine is running at production
speed, the GLP safety relay turns on Y32. When the proximity speed falls below
the Safely-limited Speed, the GLP safety relay turns off its outputs. If the
machine is already running at safe limited slow speed, the GLP safety relay
turns off its safety outputs and issues an unlock command to the guard locking
interlock.
Logic Setting 5…8 - Guard Locking with Delayed Unlock and
Automatic Reset
The GLP safety relay uses two timers to delay the turning on of the safety
outputs and unlocking the gate.
When the proximity sensor speed falls below SLS1, the GLP safety relay starts
the Frequency Measurement timer. The timer duration depends on the SLS1
setting. The GLP safety relay waits to verify that the proximity sensor speed is
maintained below SLS1. For slower SLS1 settings, the GLP safety relay waits
longer. For higher SLS1 settings, the GLP safety relay responds a little faster.
If the proximity sensor speed is maintained below SLS1, the GLP safety relay
turns on the X14, X24, Y32, and L11 outputs. The GLP safety relay also starts the
unlock timer.
After the unlock timer expires, the GLP safety relay turns on the 51 and L61
outputs, which unlock the safety gate.
A combination of the Logic switch and SLS2 sets the duration of the unlock
timer. The Logic switch sets a range of delay and the SLS2 switch sets a
percentage of that range.
As the speed of the proximity sensors increases or decreases and crosses the
SLS1 setting, the outputs and locking functions are automatic. The frequency
measurement and unlock timers only apply when the proximity sensor speed
decreases below the SLS1 setting.

12 Rockwell Automation Publication 440R-UM012F-EN-P - October 2022
Chapter 1 Overview
The S12, S22, S44, and S54 inputs do not have any functionality and do not need
any connections.
Logic Setting 8 - Speed Status Only
This logic setting does not control a guard locking interlock. This setting
ignores the unlock, lock, L12 inputs, and also the safety inputs S12 and S22.
When the proximity sensors measure speed that is below SLS1, all outputs are
off. When the speed is greater than SLS1, but less than SLS2, the 51 and L61
terminals are high and the 51/L61 status indicator is on. When the speed
exceeds SLS2, all outputs (51, L61, X14, X24, Y32, and L11) are high and the 51/L61
and X14/X24 L11 status indicators are on. When the speed crosses the SLS1 and
SLS2 levels, the outputs turn on and off automatically.

Rockwell Automation Publication 440R-UM012F-EN-P - October 2022 13
Chapter 2
Installation
This chapter explains the mounting and terminal removal procedures. This
chapter also provides information to select the proper enclosure and help
prevent overheating.
Mounting Dimensions Figure 2 - Dimensions [mm (in.)]
DIN Rail Mounting and
Removal
The GLP safety relay mounts onto a 35 mm DIN rail:
35 x 7.5 x 1 mm (1.38 x 0.3 x 0.04 in.) (EN50022 - 35 x 7.5).
1. Hold the top of the safety relay at an angle.
2. Slide the safety relay down until the housing catches the DIN rail.
3. Swing the bottom of the safety relay down and push until the latch clips
onto the DIN rail.
Figure 3 - DIN Rail Mounting
113.6 (4.47)
119.14
(4.69)
22.5
(0.88)
DIN Rail
DIN Rail Latch
DIN Rail Latch DIN Rail

14 Rockwell Automation Publication 440R-UM012F-EN-P - October 2022
Chapter 2 Installation
Removal
To remove the GLP safety relay, use a screwdriver to pry the DIN rail latch
downwards until it is in the unlatched position. Then, swing the safety relay
up.
Spacing
You can mount the GLP safety relay directly next to other GSR safety relays.
When you use the EtherNet/IP™ network interface (catalog number
440R-ENETR), mount the GSR safety relay within 10 mm (0.4 in.) of adjacent
modules to maintain effective communication.
For adequate ventilation, maintain a space of 50.8 mm (2 in.) above and below
the relay.
Removable Terminals The GLP safety relay has removable terminals to ease wiring and replacement.
Figure 4 - Removable Terminals
1. Insert the tip of a screwdriver into the slot near the terminal screws.
2. To unlock the terminal block, rotate the screwdriver.
3. Remove the terminal block from the housing.
Enclosure Considerations Most applications require installation in an industrial enclosure to reduce the
effects of electrical interference and environmental exposure. Pollution
Degree 2 is an environment where normally only non-conductive pollution
occurs, except that occasionally temporary conductivity that condensation
causes is expected. Overvoltage Category II is the load level section of the
electrical distribution system. At this level, transient voltages are controlled
and do not exceed the impulse voltage capability of the products insulation.
This equipment is intended for use in a Pollution Degree 2 industrial
environment, in overvoltage Category II applications (as defined in
IEC60664-1), at altitudes up to 2000 m (6562 ft) without derating. This
equipment is considered Group 1, Class A industrial equipment according to
IEC/CISPR 11. Without appropriate precautions, there can be difficulties with
electromagnetic compatibility in residential and other environments due to
conducted and radiated disturbances.
This equipment is supplied as open-type equipment. Mount the equipment
within an enclosure that is suitably designed for those specific environmental
conditions that are present and appropriately designed to help prevent
personal injury as a result of accessibility to live parts. The enclosure must have
suitable flame-retardant properties to help prevent or minimize the spread of
flame, and that complies with a flame spread rating of 5VA, V2, V1, V0 (or
equivalent) if non-metallic. The interior of the enclosure must be accessible
only by the use of a tool. Subsequent sections of this publication can contain
additional information regarding specific enclosure type ratings that are
required to comply with certain product safety certifications.
1
2

Rockwell Automation Publication 440R-UM012F-EN-P - October 2022 15
Chapter 2 Installation
For more information, see:
• Publication 1770-4.1, for additional installation requirements.
• NEMA Standard 250 and IEC 60529, as applicable, for explanations of the
degrees of protection that are provided by different types of enclosure.
Help Prevent Excessive
Heat
For most applications, normal convective cooling keeps the relay within the
specified operating range. Verify that the specified temperature range is
maintained. Proper spacing of components within an enclosure is sufficient
for heat dissipation.
In some applications, other equipment inside or outside the enclosure can
produce a substantial amount of heat. In this case, place blower fans inside the
enclosure to help with air circulation and to reduce hot spots near the
controller.
Additional GLP safety relay cooling provisions can be necessary when high
ambient temperatures are encountered. Do not bring in unfiltered outside air.
Place the controller in an enclosure to help protect it from a corrosive
atmosphere. Harmful contaminants or dirt could cause improper operation or
damage components. In extreme cases, you need air conditioning to help
protect against heat buildup within the enclosure.

16 Rockwell Automation Publication 440R-UM012F-EN-P - October 2022
Chapter 2 Installation
Notes:

Rockwell Automation Publication 440R-UM012F-EN-P - October 2022 17
Chapter 3
Power, Ground, and Wire
Wiring Requirements and
Recommendation
• Allow for at least 50 mm (2 in.) between I/O wiring ducts or terminal
strips and the relay.
• Route incoming power to the relay by a path separate from the device
wiring. Where paths must cross, their intersection must be
perpendicular.
• Do not run signal or communication wiring and power wiring in the
same conduit. Rout wires with different signal characteristics by
separate paths.
• Separate wiring by signal type. Bundle wiring with similar electrical
characteristics together.
• Separate input wiring from output wiring.
• Label wiring to all devices in the system. Use tape, shrink-tubing, or
other more dependable means for labeling purposes. Also use colored
insulation to identify wiring based on signal characteristics. For
example, you can use blue for DC wiring and red for AC wiring.
Wire Size
Each terminal can accommodate copper wire with size from 0.2…2.5 mm
(24…14 AWG). Use copper that withstands 60…75 °C (140…167 °F).
Terminal Torque
Torque terminals to 0.4 N•m (4 lb•in).
Terminal Assignments
Some terminals are designed to have one specific function. Some terminals
can perform multiple functions; configure these terminals during a power-up
routine.
ATTENTION: Before you install and wire any device, disconnect power to the
system.
ATTENTION: Calculate the maximum possible current in each power and
common wire. Observe all electrical codes that dictate the maximum current
allowable for each wire size. Current above the maximum ratings can cause
wiring to overheat, which can cause damage.

18 Rockwell Automation Publication 440R-UM012F-EN-P - October 2022
Chapter 3 Power, Ground, and Wire
Figure 5 - Terminal Identification
Ground the Controller There are no special grounding requirements. Terminal A2 must connect to
the common of a 24V supply.
Connect a Power Supply An external 24V DC power supply source must provide power for the GLP
safety relay.
To comply with the CE (European) Low Voltage Directive (LVD), a DC source
compliant with safety extra low voltage (SELV) or protected extra low voltage
(PELV) must power the GLP safety relay.
To comply with the USA NFPA 79, a DC power source compliant with a
protected extra low voltage (PELV) must power the GLP safety relay. That is,
the 0V must connect to protective earth.
Terminal Function
A1 +24V supply (+10%, -15%)
A2 24V common
AP Power supply for proximity sensors
P12 Proximity sensor input Channel 1
P22 Proximity sensor input Channel 2
S12 Safety input for Channel 1
S22 Safety input for Channel 2
S44 Reset and lock request input
S54 Guard locking unlock request input
Y32 Auxiliary non-safety output
L11 Single wire safety output
L12 Single wire safety input
51 Guard locking solenoid output Channel 1 (High Side)
L61 Guard locking solenoid output Channel 2 (Low Side, High Side, or Logic Link Output)
X14 Configured as either a pulse test output that is expected at one of the safety input channels or an
OSSD safety output
X24 Configured as either a pulse test output that is expected at one of the safety input channels or an
OSSD safety output
S12 S22 AP S54
A1 A2 P12 P22
X2
X1 X1 X2
X3
X4
X3 X4
PWR/Fault
IN1
51/L61
Logic IN
X14/X24 L11
L12 L11 Y32 S44
X14 X24 51 L61

Rockwell Automation Publication 440R-UM012F-EN-P - October 2022 19
Chapter 3 Power, Ground, and Wire
The following Bulletin 1606 power supply catalog numbers are SELV and
PELV-compliant.
• 1606-XLP30E
• 1606-XLP50E
• 1606-XLP50EZ
• 1606-XLP72E
• 1606-XLP95E
• 1606-XLDNET4
• 1606-XLSDNET4
Figure 6 - Power Supply Connections
Proximity Sensor
Connections
Figure 7 - PNP Proximity Sensor Connections
Figure 8 shows how to connect an NPN (sinking) proximity sensor. You must
provide an NPN to PNP converter. The converter must get power from AP and
have the same ground reference as the GLP safety relay. When an NPN/PNP
converter is used, a 4 A slow-blow fuse is required, and the NPN/PNP power (+)
must connect after the fuse.
Figure 8 - PNP and NPN Proximity Sensor Connections
Connect +24V DC to
Terminal A1
Connect 24V Common
to Terminal A2
A2 GLP
+24V DC
Power Monitoring
24V Com
P12 AP
A1 P22
Brown Brown
Black (PNP) Black (PNP)
Blue
Blue
Proximity Sensors
Power Monitoring
Proximity Sensors
Brown Brown Black (PNP) Black (PNP)
Blue Blue
User Supplied
NPN/PNP Converter
+24V DC
24V Com
A2 GLP
Power Monitoring
P12 AP
A1 P22
Fuse
4A SB
Brown Brown
Black (NPN) Black (PNP)
Blue
Blue
Proximity Sensors
NPN
PNP
+-
Power Monitoring
Proximity Sensors
Brown Brown Black (PNP) Black (NPN)
Blue Blue
Fuse User Supplied
NPN/PNP Converter

20 Rockwell Automation Publication 440R-UM012F-EN-P - October 2022
Chapter 3 Power, Ground, and Wire
Guard Locking Connections Devices with Mechanical Contacts
Guard locking devices, like the TLS3-GD2 guard locking switch, have
mechanical contact outputs, where the solenoid lock monitoring contacts
typically connect in series with the gate monitoring contacts. Some models of
the TLS3-GD2 guard locking switch allow you to monitor the gate and solenoid
contacts separately. The GLP safety relay has only one set of safety inputs.
Series connection of the gate and solenoid contacts is required because the
gate must be both closed and locked for production speed operations.
Figure 9 shows an example of the wiring connections from the GLP safety relay
to a TLS-GD2 guard locking switch. X14 and X24 generate test pulses that S12
and S22 receive. The test pulses check for short circuit conditions, which, if
detected, turns off the GLP safety relay outputs.
Figure 9 - Example Mechanical Contact Connections (TLS3-GD2 Guard Locking Switch)
Because the TLS3-GD2 guard locking switch has multiple contacts in series,
the maximum safety performance rating is Cat 3 PLd and SIL 2.
Safety Devices with OSSD Outputs
Devices, such as the TLS-Z guard locking switch, 440G-LZ guard locking
switch, and Bulletin 442G Multifunction Access Box (MAB) have
current-sourcing PNP semiconductor outputs (OSSD), which send their own
pulse-tested safety signals to the GLP safety relay input terminals. These
devices must have a common power-supply reference with the GLP safety
relay.
Figure 10 - Example TLS-Z Guard Locking Switch, 440G-LZ Guard Locking Switch, or MAB
Connections
When using the TLS-Z and 440G-LZ guard locking switches, the maximum
safety performance rating is Cat 4 PLe and SIL 3.
Pulse test output X14 can connect to either S12 or S22. Pulse test output X24 can
connect to either S12 or S22.
OSSD1 can connect to either S12 or S22 and OSSD2 can connect to either S12 or S22.
Safety
Gate
12 22 34
11 21 33
A1
A2 42
41
52
51
S12 S22
GLT
X14 X24
TLS3-GD2
Safety
Gate
S12 S22
GLP
X14 X24 A1
A2
+24V DC
TLS-Z,
440G-LZ
or MAB
OSSD1
OSSD2
24V DC Com