User manual

23Publication 1756-RM093F-EN-P - January 2010 23

Chapter

GuardLogix Controller System

Introduction

For a brief listing of components suitable for use in Safety Integrity

Level (SIL) 3 applications, see the table on page 16

. For more detailed

and up-to-date information see

http://www.rockwellautomation.com/products/certification/safety/

When installing a GuardLogix controller, follow the information in the

GuardLogix Controllers Installation Instructions, publication

1756-IN045

, or CompactLogix Controllers Installation Instructions,

publication 1768-IN004

1756 GuardLogix Controller

Hardware

The 1756 GuardLogix controller consists of a primary controller,

catalog number 1756-L61S, 1756-L62S, or 1756-L63S, and a safety

partner, catalog number 1756-LSP. These two modules work in a 1oo2

architecture to create the SIL 3-capable controller. They are described

in the following sections.

Both the primary controller and safety partner perform power-up and

run-time functional diagnostic tests of all safety-related components in

the controller.

Both also feature status indicators. For details on status indicator

operation, refer to the GuardLogix Controllers User Manual,

publication 1756-UM020

Topic Page

1756 GuardLogix Controller Hardware 23

1768 Compact GuardLogix Controller Hardware 25

CIP Safety Protocol 25

Safety I/O 25

Communication Bridges 26

Programming Overview 28

IMPORTANT

Status indicators are not reliable indicators for safety functions.

They should be used only for general diagnostics during

commissioning or troubleshooting. Do not attempt to use status

indicators to determine operational status.