Rockwell Automation 1734-IE4S User Manual

User Manual

POINT Guard I/O Safety Modules

Catalog Numbers 1734-IB8S, 1734-OB8S, 1734-IE4S

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.

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.

Labels may also be on or inside the equipment to provide specific precautions.

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).

Allen-Bradley, GuardLogix, Guardmaster, POINT Guard I/O, Rockwell Automation, Rockwell Software, RSNetWorx, SmartGuard, and Studio 5000 are trademarks of Rockwell Automation, Inc.

Trademarks not belonging to Rockwell Automation are property of their respective companies.

Summary of Changes

New and Updated

Information

This manual contains new and updated information. Changes throughout this revision are marked by change bars, as shown to the right of this paragraph.

This table contains the changes made to this revision.

Topic	Page
Added information on accessing Release Notes.	12
Added information on single-channel operation to the list of 1734-IB8S module features	18
Updated Single-channel Mode Normal Operation and Fault Detection figure.	26
Updated Dual-channel, Equivalent Normal Operation and Fault Detection figure.	28
Updated Complementary, Normal Operation and Fault Detection figure.	29
Updated Dual-channel Setting figure.	39
Added information on placing Series B modules.	48
Updated European Hazardous Location Approval information.	52
Added guidance for using the 1734-IE4S module's sensor power supply.	58
Corrected the Class ID in Table 15 Safety Analog Input Module (1734-IE4S)	158
Updated Appendix C: Specifications	161
Added specification for Sensor Supply Undercurrent Fault.	166
Added Safety Data for Series B modules to Appendix C.	173

Rockwell Automation Publication 1734-UM013J-EN-P - July 2014

3

Summary of Changes

Notes:

4	Rockwell Automation Publication 1734-UM013J-EN-P - July 2014

Table of Contents

POINT Guard I/O Overview

Safety Inputs, Safety Outputs, and

Safety Data

Preface

Studio 5000 Environment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Terminology. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Access Product Release Notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Additional Resources . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Chapter 1

Understand Suitability for Use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Safety Precautions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 Installing and Replacing Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

POINT Guard I/O Modules in CIP Safety Systems. . . . . . . . . . . . . . . . . 17

1734-IB8S Digital Input Module Features. . . . . . . . . . . . . . . . . . . . . . 18 1734-OB8S Safety Digital Output Module Features. . . . . . . . . . . . . 18

1734-IE4S Safety Analog Input Module Features . . . . . . . . . . . . . . . 19 Programming Requirements. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 CIP Safety Architectures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Safety Application Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Chapter 2

Safe States . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

POINT Guard Digital I/O Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

POINT Guard I/O Analog Input Module. . . . . . . . . . . . . . . . . . . . . . 24

Safety Inputs (1734-IB8S) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Using a Test Output with a Safety Input . . . . . . . . . . . . . . . . . . . . . . . 24

Single-channel Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

Dual-channel Mode and Discrepancy Time. . . . . . . . . . . . . . . . . . . . . 27

Dual-channel, Equivalent . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

Dual-channels, Complementary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

Safety Input Fault Recovery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

Input Delays . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

Safety Analog Inputs (1734-IE4S) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

Input Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

Scaling. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

Digital Input Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

Sensor Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

Channel Offset. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

Process Alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

Using a Single-channel Sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

Dual-channel Equivalent Mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

Tachometer Mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

Safety Outputs (1734-OB8S) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

Safety Output with Test Pulse . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

Dual-channel Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

Safety Output Fault Recovery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

Muting Lamp Operation (1734-IB8S) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

Rockwell Automation Publication 1734-UM013J-EN-P - July 2014

5

Table of Contents

GuidelinesforPlacingPowerSupplies

and Modules in a System

I/O Status Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

Digital I/O Status Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

Analog I/O Status Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

Chapter 3

Choosing a Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45 Power Supply Examples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

Example 1: Isolating Field Power Segments . . . . . . . . . . . . . . . . . . . . . 47

Example 2: POINT Guard I/O Used with AC I/O Modules . . . . . 47 Placing Series A Digital and Analog Modules . . . . . . . . . . . . . . . . . . . . . . . 48

Placing Series B Digital Modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

	Chapter 4
Install the Module	Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	52
	European Hazardous Location Approval . . . . . . . . . . . . . . . . . . . . . . .	52
	North American Hazardous Location Approval . . . . . . . . . . . . . . . . .	53
	Environment and Enclosure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	53
	Preventing Electrostatic Discharge . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	54
	Mount the Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	54
	Install the Mounting Base . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	54
	Connect the Module to the Mounting Base . . . . . . . . . . . . . . . . . . . . .	55
	Connect the Removable Terminal Block. . . . . . . . . . . . . . . . . . . . . . . .	56
	Remove a Mounting Base. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	57
	Wire Modules. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	58
	Terminal Layout. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	59
	Connection Details. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	60
	Wiring Examples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	62
	Emergency Stop Dual-channel Devices . . . . . . . . . . . . . . . . . . . . . . . . .	62
	Single-channel Safety Contactor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	63
	Dual-channel Safety Contactors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	64
	Safety Analog Input Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	65
	Chapter 5
ConfiguretheModuleinaGuardLogix	Setting Up the Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	73
Controller System	Add and Configure the Ethernet Bridge Module . . . . . . . . . . . . . . . . . . . .	74
	Add and Configure the 1734 Ethernet Adapter . . . . . . . . . . . . . . . . . . . . .	75
	Add and Configure Safety Digital Input Modules . . . . . . . . . . . . . . . . . . .	77
	Add the Safety Digital Input Module . . . . . . . . . . . . . . . . . . . . . . . . . . .	77
	Configure the Safety Digital Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . .	82
	Configure the Test Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	85
	Add and Configure Safety Digital Output Modules . . . . . . . . . . . . . . . . .	86
	Add the Safety Digital Output Module . . . . . . . . . . . . . . . . . . . . . . . . .	86
	Configure the Safety Digital Outputs. . . . . . . . . . . . . . . . . . . . . . . . . . .	90
	Add and Configure Safety Analog Input Modules . . . . . . . . . . . . . . . . . . .	91
	Add the Safety Analog Input Module. . . . . . . . . . . . . . . . . . . . . . . . . . .	91
	Configure the Safety Analog Input Channel Operation . . . . . . . . . .	94
	Configure the Safety Analog Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . .	95

6	Rockwell Automation Publication 1734-UM013J-EN-P - July 2014

Table of Contents

Configure the Module for a SmartGuard Controller

Configure Safety Analog Input Alarms (optional) . . . . . . . . . . . . . . . 96 Configure Tachometer Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98

Values and States of Tags . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100

Configure Safety Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102 Configuration Ownership . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103

Saving and Downloading the Module Configuration . . . . . . . . . . . . . . . 104

Using ControlFLASH Software to Update POINT Guard I/O

Modules. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104

Chapter 6

Before You Begin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105

Set the Node Address. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 106

Auto-addressing with a 1734-PDN Adapter . . . . . . . . . . . . . . . . . . . . . . . 108 Set Up Your DeviceNet Network . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109

Configure the POINT Guard I/O Modules . . . . . . . . . . . . . . . . . . . . . . . 110 Configure Digital Safety Inputs and Test Outputs . . . . . . . . . . . . . 110 Configure Digital Safety Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113

Configure Safety Analog Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114

Configure the SmartGuard Controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . 119 Set Up the Input and Output Connections . . . . . . . . . . . . . . . . . . . . 119

Complete the Set Up of the SmartGuard Controller . . . . . . . . . . . 123

Save and Download Module Configuration . . . . . . . . . . . . . . . . . . . . . . . 124

Configuring Safety Connections between a GuardLogix Controller and POINT Guard I/O Modules on a DeviceNet Network

Chapter 7

Configure the Module in RSNetWorx for DeviceNet Software . . . . . 125 Add the POINT Guard I/O Module to the Controller Project . . . . . 126 Complete the Safety Configuration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 129 Download the DeviceNet Network Configuration. . . . . . . . . . . . . . . . . 131 Verify Your DeviceNet Safety Configuration . . . . . . . . . . . . . . . . . . . . . . 131

Determine If Devices Can Be Verified. . . . . . . . . . . . . . . . . . . . . . . . . 132

Select Devices to Verify . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 133 Review the Safety Device Verification Reports . . . . . . . . . . . . . . . . . 134

Lock Safety Devices. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 135

Chapter 8

Replacing POINT Guard I/O Modules The Safety Network Number . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 137 Manually Setting the Safety Network Number. . . . . . . . . . . . . . . . . . . . . 138

Resetting a Module to Out-of-box Condition . . . . . . . . . . . . . . . . . . . . . 139

By Using the Logix Designer Application. . . . . . . . . . . . . . . . . . . . . . 139 By Using RSNetWorx for DeviceNet Software . . . . . . . . . . . . . . . . 140

Replacing a Module in a GuardLogix System on an EtherNet/IP

Network . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 141 Replacement with ‘Configure Only When No Safety Signature Exists’ Enabled . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 141

Replacement with ‘Configure Always’ Enabled. . . . . . . . . . . . . . . . . 145 Replacing a Module When Using a SmartGuard or GuardLogix

Controller on a DeviceNet Network. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 147

Rockwell Automation Publication 1734-UM013J-EN-P - July 2014

7

Table of Contents
	Appendix A
Indicators	Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	152
	Network Status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	152
	Configuration Lock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	152
	Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	153
	1734-IE4S Sensor Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	153
	1734-IE4S Safety Analog Input Status . . . . . . . . . . . . . . . . . . . . . . . . . . . .	153
	1734-IB8S Safety Input Status. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	153
	1734-OB8S Safety Output Status. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	154

Get I/O Diagnostic Status from Modules in Logix Systems

Specifications

Appendix B

Message Instructions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 155

Configure the Message Instruction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 156 Class, Instance, and Attribute Data for I/O Modules . . . . . . . . . . . . . . . 157

Appendix C

Technical Specifications for Series A Modules . . . . . . . . . . . . . . . . . . . . . 161

Safety Digital Input Module Specifications. . . . . . . . . . . . . . . . . . . . . 161 Safety Digital Output Module Specifications. . . . . . . . . . . . . . . . . . . 163

Safety Analog Input Module Specifications . . . . . . . . . . . . . . . . . . . . 164

Technical Specifications for Series B Modules. . . . . . . . . . . . . . . . . . . . . . 173 Safety Digital Input Module Specifications. . . . . . . . . . . . . . . . . . . . . 173

Safety Digital Output Module Specifications. . . . . . . . . . . . . . . . . . . 176

Environmental Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 177 Certifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 179

Legislations and Standards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 179

	Appendix D
Safety Data	. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	181
	Series A Safety Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	182
	Series B Safety Data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	184
	Appendix E
Configuration Parameters	. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	187
	Appendix F
I/O Assemblies	Input Assemblies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	191
	Output Assemblies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	192
	Analog Input Assemblies. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	192
	Configuration Assemblies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	194
	Using Data from Modules Configured via the Generic Profile. . . . . . .	200

8	Rockwell Automation Publication 1734-UM013J-EN-P - July 2014

		Table of Contents
	Appendix G
History of Changes	1734-UM013I-EN-P, May 2013 . . . . . . . . . . . . . . . . . . . . . . . . . .	. . . . . . . 201
	1734-UM013H-EN-P, August 2012. . . . . . . . . . . . . . . . . . . . . . . .	. . . . . . 201
	1734-UM013G-EN-P, August 2012. . . . . . . . . . . . . . . . . . . . . . . .	. . . . . . 201
	1734-UM013F-EN-P, June 2012. . . . . . . . . . . . . . . . . . . . . . . . . . .	. . . . . . 201
	1734-UM013E-EN-P, March 2012. . . . . . . . . . . . . . . . . . . . . . . . .	. . . . . . 202
	1734-UM013D-EN-P, September 2011 . . . . . . . . . . . . . . . . . . . .	. . . . . . 202
	1734-UM013C-EN-P, August 2010. . . . . . . . . . . . . . . . . . . . . . . .	. . . . . . 202
	1734-UM013B-EN-P, June 2009. . . . . . . . . . . . . . . . . . . . . . . . . . .	. . . . . . 203
	1734-UM013A-EN-P, February 2009 . . . . . . . . . . . . . . . . . . . . . .	. . . . . . 203
Index

Rockwell Automation Publication 1734-UM013J-EN-P - July 2014

9

Table of Contents

10	Rockwell Automation Publication 1734-UM013J-EN-P - July 2014

Preface

Thoroughly read and understand this manual before installing and operating a system using POINT Guard I/O™ modules.

Always observe the following guidelines when using a module, noting that in this manual we use safety administrator to mean a person qualified, authorized, and responsible to secure safety in the design, installation, operation, maintenance, and disposal of the ‘machine’.

• Keep this manual in a safe place where personnel can refer to it when necessary.

• Use the module properly according to the installation environment, performance ratings, and functions of the machine.

See Understand Suitability for Use on page 15 and Safety Precautions on page 17.

	Product specifications and accessories can change at any time. Consult with your
	Rockwell Automation representative to confirm specifications of purchased
	product. Dimensions and weights are nominal and are not for manufacturing
	purposes, even when tolerances are shown.
	Consult your Rockwell Automation representative if you have any questions or
	comments. Also refer to the related documentation, listed in the page 13, as
	necessary.
Studio 5000 Environment	The Studio 5000® Automation Engineering & Design Environment combines
	engineering and design elements into a common environment. The first element
	is the Studio 5000 Logix Designer™ application. The Logix Designer application
	is the rebranding of RSLogix™ 5000 software and will continue to be the product
	to program Logix5000™ controllers for discrete, process, batch, motion, safety,
	and drive-based solutions.

The Studio 5000 environment is the foundation for the future of Rockwell Automation® engineering design tools and capabilities. The Studio 5000 environment is the one place for design engineers to develop all of the elements of their control system.

Rockwell Automation Publication 1734-UM013J-EN-P - July 2014

11

Preface

Terminology		Refer to this table for the meaning of common terms.
	Term	Means
	Connection	Logical communication channel for communication between nodes. Connections are maintained and controlled between masters and slaves.
	EDS	Electronic data sheet, a template used in RSNetWorx software to display the configuration parameters, I/O data profile, and connection-type support for a
		given I/O module. RSNetWorx software uses these simple text files to identify products and commission them on a network.
	ODVA	Open DeviceNet Vendor Association, a nonprofit association of vendors established for the promotion of CIP networks.
	PFD	Probability of failure on demand, the average probability of a system to fail to perform its design function on demand.
	PFH	Probability of failure per hour, the probability of a system to have a dangerous failure occur per hour.
	Proof test	Periodic test performed to detect failures in a safety-related system so that, if necessary, the system can be restored to an as-new condition or as close as
		practical to this condition.
	SNN	Safety network number, which uniquely identifies a network across all networks in the safety system. You are responsible for assigning a unique number
		for each safety network or safety sub-net within a system.
	Standard	Devices or portions of devices that do not participate in the safety function.

Access Product Release Notes Product release notes are available online within the Product Compatibility and Download Center.

1.From the Quick Links list on http://www.ab.com, choose Product Compatibility and Download Center.

2.From the Compatibility Scenarios tab or the Get Downloads tab, search for and choose your product.

3. Click the download icon to access product release notes.

12	Rockwell Automation Publication 1734-UM013J-EN-P - July 2014

Preface

Additional Resources

These documents contain additional information concerning related products from Rockwell Automation.

Resource	Description
POINT I/O Selection Guide, publication 1734-SG001	Provides selection information for POINT I/O™ modules. Additional publication references
	are listed as well.
GuardLogix 5570 Controllers User Manual, publication 1756-UM022	Provides information on how to install, configure, program, and use GuardLogix 5570
	controllers in Studio 5000 Logix Designer projects.
GuardLogix 5570 Controller Systems Safety Reference Manual, publication 1756-RM099	Provides information on safety application requirements for GuardLogix 5570 controllers
	in Studio 5000™ Logix Designer projects.
GuardLogix Controller Systems Safety Reference Manual, publication 1756-RM093	Provides information on safety system requirements and describes the GuardLogix®
	controller system.
GuardLogix Controllers User Manual, publication 1756-UM020	Provides information on how to install, configure, program, and use GuardLogix
	controllers in RSLogix 5000 projects.
GuardLogix Safety Application Instructions Safety Reference Manual,	Provides reference information describing the GuardLogix Safety Application Instruction
publication 1756-RM095	Set.
SmartGuard 600 Controllers Safety Reference Manual, publication 1752-RM001	Describes SmartGuard 600-specific safety requirements and controller features.
SmartGuard 600 Controllers User Manual, publication 1752-UM001	Describes how to configure, operate, and troubleshoot the controller.
Field Potential Distributor Installation Instructions, publication 1734-IN059	Provides installation information on 1734-FPD distributors.
POINT I/O 24V DC Expansion Power Supply Installation Instructions,	Provides installation information on 1734-EP24DC power supplies.
publication 1734-IN058
POINT I/O 120/240V AC Expansion Power Supply Installation Instructions,	Provides installation information on 1734-EPAC power supplies.
publication 1734-IN017
POINT I/O Wiring Base Assembly Installation Instructions, publication 1734-IN511	Provides installation information on 1734-TB and 1734-TBS assemblies.
POINT I/O One-piece Wiring Base Assembly Installation Instructions,	Provides installation information on 1734-TOP, 1734-TOPS, 1734-TOP3, and 1734-TOP3S
publication 1734-IN028	assemblies.
DeviceNet Modules in Logix5000 Control Systems User Manual, publication DNET-UM004	Provides information on how to connect the controller to the network.
ODVA Media Planning and Installation Guide, http://www.odva.org	Describes the required media components and how to plan for and install these required
	components.
Industrial Automation Wiring and Grounding Guidelines, publication 1770-4.1	Provides general guidelines for installing a Rockwell Automation industrial system.
Product Certifications website, http://www.ab.com	Provides declarations of conformity, certificates, and other certification details.

You can view or download publications at http://www.rockwellautomation.com/literature/. To order paper copies of technical documentation, contact your local Allen-Bradley® distributor or Rockwell Automation sales representative.

Rockwell Automation Publication 1734-UM013J-EN-P - July 2014

13

Preface

Notes:

14	Rockwell Automation Publication 1734-UM013J-EN-P - July 2014

Chapter 1

POINT Guard I/O Overview

Understand Suitability for Use

Topic	Page
Understand Suitability for Use	15
Safety Precautions	17
POINT Guard I/O Modules in CIP Safety Systems	17
Safety Application Requirements	21

Use the POINT Guard I/O safety modules in the POINT I/O platform to distribute safety I/O on a safety-control network that meets the requirements up to and including SIL CL3, and PLe, Cat. 4 as defined in IEC 61508, IEC 61511, IEC 62061, and ISO 13849-1. POINT Guard I/O modules may be used with 1756 GuardLogix, 1768 Compact GuardLogix, or SmartGuard 600 controllers.

You can configure the modules for use on DeviceNet networks by using the network configuration tool, RSNetWorx™ for DeviceNet software. For EtherNet networks, use the GuardLogix programming tool, the Logix Designer application.

Rockwell Automation is not responsible for conformity with any standards, codes, or regulations that apply to the combination of the products in your application or use of the product. See Legislations and Standards on page 179 for more information.

Take all necessary steps to determine the suitability of the products for the systems, machine, and equipment with which it is used.

Know and observe all prohibitions of use applicable to these products.

Use this equipment within its specified ratings.

Never use these products for an application involving serious risk to life or property without making sure that the system as a whole was designed to address the risks and that the Rockwell Automation products are properly rated and installed for the intended use within the overall equipment or system.

Rockwell Automation Publication 1734-UM013J-EN-P - July 2014

15

Chapter 1 POINT Guard I/O Overview

Verify that the POINT Guard I/O firmware revision is correct prior to commissioning the safety system. Firmware information for safety I/O modules is available at http://www.rockwellautomation.com/products/certification/safety.

TIP	Field power must be applied to the 1734-IE4S module when updating
	firmware.

Verify that a safety administrator conducts a risk assessment on the machine and determines module suitability before installation.

ATTENTION: Personnel responsible for the application of safety-related programmable electronic systems (PES) shall be aware of the safety requirements in the application of the system and shall be trained in using the system.

ATTENTION: Use only appropriate components or devices complying with relevant safety standards corresponding to the required safety category and safety integrity level.

•Conformity to requirements of the safety category and safety integrity level must be determined for the entire system.

•We recommend you consult a certification body regarding assessment of conformity to the required safety integrity level or safety category.

You are responsible for confirming compliance with the applicable standards for the entire system.

Table 1 - Requirements for Controlling Devices

Device	Requirement	Allen-Bradley Bulletin Safety Components
Emergency stop switches	Use approved devices with direct opening mechanisms complying with IEC/EN 60947-	Bulletin 800F, 800T
	5-1.
Door interlocking switches,	Use approved devices with direct opening mechanisms complying with IEC/EN 60947-	Bulletin 440K, 440G, 440H for interlock switch
limit switches	5-1 and capable of switching microloads of	Bulletin 440P, 802T for limit switch
	24V DC, 3 mA.
Safety sensors	Use approved devices complying with the relevant product standards, regulations, and	Any Guardmaster product
	rules in the country where used.
Relays with forciblyguided	Use approved devices with forcibly-guided contacts complying with EN 50205. For	Bulletin 700S, 100S
contacts, contactors	feedback purposes, use devices with contacts capable of switching micro loads of
	24V DC, 3 mA.
Other devices	Evaluate whether devices used are appropriate to satisfy the requirements of safety	-
	category levels.

16	Rockwell Automation Publication 1734-UM013J-EN-P - July 2014

POINT Guard I/O Overview	Chapter 1

Safety Precautions

Observe these precautions for proper use of POINT Guard I/O modules.

ATTENTION: As serious injury may occur due to loss of required safety function, follow these safety precautions.

•Never use test outputs as safety outputs. Test outputs are not safety outputs.

•Do not use Ethernet, DeviceNet, or ControlNet standard I/O data or explicit message data as safety data.

•Do not use LED status indicators on the I/O modules for safety operations.

•Do not connect loads beyond the rated value to the safety outputs.

•Apply properly specified voltages to the module. Applying inappropriate voltages may cause the module to fail to perform it’s specified function, which could lead to loss of safety functions or damage to the module.

•Wire the POINT Guard I/O modules properly following the wiring requirements and guidelines in Wire Modules on page 58.

•Set unique network node addresses before connecting devices to the network.

•Perform testing to confirm that device wiring, configuration, and operation is correct before starting system operation.

•Do not disassemble, repair, or modify the module. This may result in loss of safety functions.

POINT Guard I/O Modules in

CIP Safety Systems

Installing and Replacing Modules

ATTENTION:

•Clear previous configuration data before connecting devices to the network or connecting input or output power to the device.

•Configure the replacement device properly and confirm that it operates correctly.

•After installation of the module, a safety administrator must confirm the installation and conduct trial operation and maintenance.

When cleaning modules, do not use the following:

•Thinner

•Benzene

•Acetone

POINT Guard I/O modules are used in the POINT I/O platform and implement CIP Safety protocol extensions over EtherNet/IP and DeviceNet networks to communicate safety messages. POINT Guard I/O modules connect to EtherNet/IP or DeviceNet networks via these network adapters.

Table 2 - Network Adapters

Network	System	Adapter(1)
EtherNet/IP	GuardLogix	1734-AENT (firmware revision 3 or later)
		1734-AENTR
DeviceNet	SmartGuard or GuardLogix	1734-PDN

(1) Not compatible with 1734-ADN, 1734-ADNX, 1734-APB, or 1734-ACNR adapters.

Rockwell Automation Publication 1734-UM013J-EN-P - July 2014

17

Chapter 1 POINT Guard I/O Overview

Distributed I/O communication for safety I/O data is performed through safety connections supporting CIP Safety over an EtherNet/IP or DeviceNet network. Data processing is performed in the safety controller. The status and fault diagnostics of POINT Guard I/O modules are monitored by a controller.

In addition to I/O state data, the modules include status data for monitoring I/O faults within each circuit.

The configuration information of the modules can be protected by a password.

1734-IB8S Digital Input Module Features

•Safety digital inputs

–Safety devices, such as emergency stop push buttons, gate switches, and safety light curtains, can be connected.

–Dual-channel mode evaluates consistency between two input signals (channels), which allows use of the module for safety Category 3 and 4 and in applications rated up to and including Performance Level e/ SIL CL3.

–Single-channel mode evaluates one input signal (channel), which allows use of the module for safety Category 2 and in applications rated up to and including Performance Level d/SIL CL 2.

–You can configure a discrepancy time to control how long two channels are allowed to be discrepant before a fault is declared.

–An external wiring short-circuit check is possible when inputs are wired in combination with test outputs. The module must be wired in combination with test outputs when this function is used.

–Independently adjustable on and off delays are available per channel.

•Test outputs (digital input modules only)

–Separate test outputs are provided for short-circuit detection of a safety input (or inputs).

–Power (24V) can be supplied to devices, such as safety sensors.

–Test outputs can be configured as standard outputs.

–Specific test outputs can be used for broken-wire detection of a muting lamp.

1734-OB8S Safety Digital Output Module Features

•Solid-state outputs

•Dual-channel mode provides redundant control by using two output signals (channels), which allows use of the module for safety Category 3 and 4, and applications rated up to and including Performance Level e/ SIL CL3.

•Safety outputs can be pulse-tested to detect field wiring short circuits to 24V DC.

18	Rockwell Automation Publication 1734-UM013J-EN-P - July 2014

POINT Guard I/O Overview	Chapter 1

1734-IE4S Safety Analog Input Module Features

•Connection of up to four voltage or current sensors.

•Sensor power outputs are individually current-limited and monitored.

•Measurement of process variables, such as temperature, pressure, or flow rate.

•Seven configurable input ranges

(±10V, ±5V, 0…5V, 0…10V, 4…20 mA, 0…20 mA, Tachometer).

•Tachometer mode converts 24V DC switching signals into pulses per second.

•Single-channel or dual-channel for SIL 3-rated safety devices and applications.

•Dual-channel mode evaluates the consistency between two input signals (channels), which allows use of the module in applications rated up to and including SIL CL3/PLe/Cat. 4.

•You can configure a discrepancy time to control how long two channels are allowed to be discrepant before a fault is declared.

Programming Requirements

Use the minimum software versions listed here.

Cat. No.	Studio 5000 Environment	RSLogix 5000 Software	RSNetWorxforDeviceNet
	Version(1)	Version(1)	Software Version(1)
		(EtherNet/IP Network)	(DeviceNet Network)
1734-IB8S,	21	17(2)	9
1734-OB8S
1734-IE4S	21	18(3)	10

(1)This version or later.

(2)If you are using digital POINT Guard I/O modules with the analog POINT Guard I/O module, you need to update the add-on profiles to version 2.02.004 or later for the modules to be compatible with version 18 or later of RSLogix 5000 software and the Studio 5000 environment. To find add-on profiles, go to http://www.rockwellautomation.com/support.

(3)Dual-channel Analog (DCA) safety application instruction is available in RSLogix 5000 software, version 20 or later and Studio 5000 environment, version 21 and later.

Rockwell Automation Publication 1734-UM013J-EN-P - July 2014

19

Chapter 1 POINT Guard I/O Overview

CIP Safety Architectures

Use POINT Guard I/O modules in EtherNet/IP or DeviceNet safety architectures. Safety controllers control the safety outputs. Safety or standard PLC controllers can control the standard outputs.

Figure 1 - POINT Guard I/O Modules in EtherNet/IP Safety Architecture

GuardLogix

Controller

Stratix Switch

CompactBlock

Guard I/O™

Safety Communication	POINT Guard I/O and POINT I/O
Standard Communication

Safety Communication

Standard Communication

Figure 2 - POINT Guard I/O Modules in DeviceNet Safety Architectures

GuardLogix

Controller

SmartGuard

Controller

Guard I/O

POINT Guard I/O and POINT I/O

20	Rockwell Automation Publication 1734-UM013J-EN-P - July 2014

POINT Guard I/O Overview	Chapter 1

Safety Application

Requirements

POINT Guard I/O modules are certified for use in safety applications up to and including Performance Level e (PLe/Cat. 4) and Safety Integrity Level 3

(SIL CL3) in which the de-energized state is the safe state. Safety application requirements include evaluating probability of failure rates (PFD and PFH), system reaction time settings, and functional verification tests that fulfill SIL 3 criteria.

Creating, recording, and verifying the safety signature is also a required part of the safety application development process. Safety signatures are created by the safety controller. The safety signature consists of an identification number, date, and time that uniquely identifies the safety portion of a project. This includes all safety logic, data, and safety I/O configuration.

For safety system requirements, including information on the safety network number (SNN), verifying the safety signature, functional verification test intervals, system reaction time, and PFD/PFH calculations, refer to the following publications.

For safety requirements in	Refer to
GuardLogix controller systems	GuardLogix 5570 Controller Systems Safety Reference
	Manual, publication 1756-RM099
SmartGuard 600 controller systems	SmartGuard 600 Controllers Safety Reference Manual,
	publication 1752-RM001

You must read, understand, and fulfill the requirements detailed in these publications prior to operating a safety system that uses POINT Guard I/O modules.

Rockwell Automation Publication 1734-UM013J-EN-P - July 2014

21

Chapter 1 POINT Guard I/O Overview

Notes:

22	Rockwell Automation Publication 1734-UM013J-EN-P - July 2014

Chapter 2

Safety Inputs, Safety Outputs, and Safety Data

Topic	Page
Safe States	23
Safety Inputs (1734-IB8S)	24
Safety Analog Inputs (1734-IE4S)	31
Safety Outputs (1734-OB8S)	39
I/O Status Data	42

Safe States POINT Guard Digital I/O Modules

ATTENTION:

• The safe state of the outputs is defined as the off state.

•The safe state of the module and its data is defined as the off state.

•Use the POINT Guard I/O module only in applications where the off state is the safe state.

These are the safe states of the digital POINT Guard I/O modules:

•Safety outputs: OFF

•Safety input data to network: OFF (single channel and dual-channel equivalent)

•Safety input data to network: OFF/ON for input channels n/n+1 (dual-channel complimentary)

Figure 3 - Safety Status

Networks

Inputs to Network OFF

Safety

Status

Output OFF

Input

44076

The module is designed for use in applications where the safe state is the off state.

Rockwell Automation Publication 1734-UM013J-EN-P - July 2014

23

Chapter 2 Safety Inputs, Safety Outputs, and Safety Data

POINT Guard I/O Analog Input Module

These are the safe states of the POINT Guard I/O analog input module:

•Safety input data to network in single-channel configuration: 0 (OFF)

•Safety input data to network in dual-channel equivalent configuration:

–If a diagnostic fault occurs, the signal for the faulted channel is set to 0 (OFF).

–If a dual-channel discrepancy fault occurs, the dual-channel inputs continue to report actual input signals.

Safety Inputs (1734-IB8S)

Safety inputs are used to monitor safety input devices.

Using a Test Output with a Safety Input

A test output can be used in combination with a safety input for short circuit, cross-channel, and open-circuit fault detection. Configure the test output as a pulse test source and associate it to a specific safety input.

TIP		The test output can also be configured as a power supply to source 24V DC
		to an external device, for example, a light curtain.
Figure 4 - Example Use of a POINT Guard I/O Input Module
Safety Input
		I0		I1	I4	I5
Terminal		0		1	0
								1
		I2		I3	I6	I7
		2		3	2			3
		COM		COM	COM	COM
		4		5	4			5
		TO		T1M	T2	T3M				External
										Contact
		6		7	6			7
	Where:
	T0 = Test Output 0				T1M = Test Output 1 with Muting
	T2 = Test Output 2				T3M = Test Output 3 with Muting
	I0…I7 = Safety Inputs

24	Rockwell Automation Publication 1734-UM013J-EN-P - July 2014

Safety Inputs, Safety Outputs, and Safety Data	Chapter 2

Figure 5 - Test Pulse in a Cycle

On

OUT

X

Off

Y

For the 1734-IB8S module, the pulse width (X) is typically 525 μs; the pulse period (Y) is typically 144 ms.

When the external input contact is closed, a test pulse is output from the test output terminal to diagnose the field wiring and input circuitry. By using this function, short-circuits between inputs and 24V power, and between input signal lines and open circuits can be detected.

Figure 6 - Short-circuit between Input Signal Lines

24V		IN+
		COM							24V
										0V
		T0							External Contact
		IN0								Short-circuit between Input Signal Lines and Power
										Supply (positive side)

T1

External Contact

IN1

Short-circuit between Input Signal Lines

44079

Rockwell Automation Publication 1734-UM013J-EN-P - July 2014

25

Chapter 2 Safety Inputs, Safety Outputs, and Safety Data

Single-channel Mode

If an error is detected, safety input data and safety input status turn off.

Figure 7 - Normal Operation and Fault Detection (not to scale)

Normal Operation

Test Output 0

24V

0V

External Device

ON

OFF

Input Terminal 0

ON

Safety

OFF

Safety Input 0

ON

I/O

Network

Data

OFF

Data Sent

to the

ON

Controller

Safety Input 0

Status

OFF

Fault Detection

Test Output 0

24V

0V

External Device

ON

OFF

Input Terminal 0

ON

OFF

Fault Detected

Safety

Safety Input 0

ON

I/O

Data

OFF

Network

Data Sent

to the

Safety Input 0

ON

Controller

Status

OFF

26	Rockwell Automation Publication 1734-UM013J-EN-P - July 2014

Safety Inputs, Safety Outputs, and Safety Data Chapter 2

Dual-channel Mode and Discrepancy Time

To support dual-channel safety devices, the consistency between signals on two channels can be evaluated. Either equivalent or complementary can be selected.

If the length of a discrepancy between the channels exceeds the configured discrepancy time (0…65,530 ms in increments of 10 ms), the safety input data and the individual-safety input status turn off for both channels. In Dual-channel Complimentary mode, the safety input data goes to off/on for input channels n/n+1 respectively as described in Table 3.

				IMPORTANT		The dual-channel function is used with two consecutive inputs that are paired
						together, starting at an even input number, such as inputs 0 and 1, 2 and 3,
						and so on.
				IMPORTANT		If you are using the safety application instructions with a GuardLogix
						controller, set the module’s inputs to Single (default). Do not use the modules’
						dual-channel mode as this functionality is provided by the safety application
						instructions.
				This table shows the relation between input terminal states and controller input
				data and status.
Table 3 - Terminal Input Status and Controller I/O Data
Dual-channel Mode	Input Terminal		Controller Input Data and Status						Dual-channel	Dual-channel
									Resultant	Resultant
	IN0	IN1	Safety		Safety		Safety	Safety
									Data
			Input 0 Data		Input 1 Data		Input 0 Status	Input 1 Status
Dual-channels, Equivalent	OFF	OFF	OFF		OFF		ON	ON	OFF	Normal
	OFF	ON	OFF		OFF		OFF	OFF	OFF	Fault
	ON	OFF	OFF		OFF		OFF	OFF	OFF	Fault
	ON	ON	ON		ON		ON	ON	ON	Normal
Dual-channels, Complementary	OFF	OFF	OFF		ON		OFF	OFF	OFF	Fault
	OFF	ON	OFF		ON		ON	ON	OFF	Normal
	ON	OFF	ON		OFF		ON	ON	ON	Normal
	ON	ON	OFF		ON		OFF	OFF	OFF	Fault

Rockwell Automation Publication 1734-UM013J-EN-P - July 2014

27

Chapter 2 Safety Inputs, Safety Outputs, and Safety Data

Dual-channel, Equivalent

In Equivalent mode, both inputs of a pair should be in the same (equivalent) state. When a transition occurs in one channel of the pair prior to the transition of the second channel of the pair, a discrepancy occurs. If the second channel transitions to the appropriate state prior to the discrepancy time elapsing, the inputs are considered equivalent. If the second transition does not occur before the discrepancy time elapses, the channels will fault. In the fault state, the input and status for both channels are set low (OFF). When configured as an equivalent dual pair, the data bits for both channels will always be sent to the controller as equivalent, both high or both low.

Figure 8 - Equivalent, Normal Operation and Fault Detection (not to scale)

Normal Operation

IN0

ON

OFF

IN1

ON

OFF

Discrepancy Time

Safety Input 0

ON

Safety

Data

OFF

I/O

Network

ON

Data Sent

Safety Input 1

to the

Data

OFF

Controller

Safety Input 0, 1

ON

Status

OFF

Fault Detection

IN0

ON

OFF

IN1

ON

OFF

Discrepancy Time

Safety

Safety Input 0

ON

Data

OFF

I/O

Network

ON

Data Sent

Safety Input 1

to the

Data

OFF

Controller

ON

Fault Detected

Safety Input 0, 1

Status

OFF

28	Rockwell Automation Publication 1734-UM013J-EN-P - July 2014

Safety Inputs, Safety Outputs, and Safety Data	Chapter 2

Dual-channels, Complementary

In Complementary mode, the inputs of a pair should be in the opposite (complementary) state. When a transition occurs in one channel of the pair prior to the transition of the second channel of the pair, a discrepancy occurs. If the second channel transitions to the appropriate state prior to the discrepancy time elapsing, the inputs are considered complementary.

If the second transition does not occur before the discrepancy time elapses, the channels will fault. The fault state of complementary inputs is the even-numbered input turned off and the odd-numbered input turned ON. Note that if faulted, both channel status bits are set low. When configured as a complementary dual-channel pair, the data bits for both channels will always be sent to the controller in complementary, or opposite states.

Figure 9 - Complementary, Normal Operation and Fault Detection (not to scale)

Normal

IN0

ON

Operation

OFF

IN1

ON

OFF

Discrepancy Time

Safety Input 0

ON

Safety

Data

OFF

I/O

Network

ON

Data Sent

Safety Input 1

to the

Data

OFF

Controller

Safety Input 0, 1

ON

Status

OFF

Fault Detection

IN0

ON

OFF

IN1

ON

OFF

Discrepancy Time

Safety Input 0

ON

Safety

Data

OFF

I/O

Network

ON

Data Sent

Safety Input 1

to the

Data

OFF

Controller

ON

Fault Detected

Safety Input 0, 1

Status

OFF

Rockwell Automation Publication 1734-UM013J-EN-P - July 2014

29

Chapter 2 Safety Inputs, Safety Outputs, and Safety Data

Safety Input Fault Recovery

If an error is detected, the safety input data remains in the OFF state. Follow this procedure to activate the safety input data again.

1.Remove the cause of the error.

2.Place the safety input (or safety inputs) into the safe state.

3.Allow the input-error latch time to elapse.

After these steps are completed, the I/O indicator (red) turns off. The input data is now active.

Input Delays

On-delay—An input signal is treated as Logic 0 during the on-delay time (0…126 ms, in increments of 6 ms) after the input contact’s rising edge. The input turns on only if the input contact remains on after the on-delay time has elapsed. This helps prevent rapid changes of the input data due to

contact bounce.

Figure 10 - On-delay

Input Signal

ON

OFF

Safety Input

ON

Network Data

OFF

On-delay

44094

Off-delay—An input signal is treated as Logic 1 during the off-delay time (0…126 ms, in increments of 6 ms) after the input contact’s falling edge.

The input turns off only if the input contact remains off after the off delay time has elapsed. This helps prevent rapid changes of the input data due to contact bounce.

Figure 11 - Off-delay

Input Signal

ON

OFF

Safety Input

ON

OFF

Network Data

Off-delay

44095

30	Rockwell Automation Publication 1734-UM013J-EN-P - July 2014