Rockwell / Allen-Bradley 1794-ASB Reference Manual

This file is the Reference Manual for Rockwell / Allen-Bradley 1794-ASB product, which introduces the product's features, usage methods and safety precautions

Brand: Rockwell Automation
Document type: User Manual
Language: English
Pages: 62
File format: PDF
File size: 4.6 MB
Published: 12 October, 2023
Updated: 12 October, 2023
MD5 checksum: 0EBDF22D5DB5F66B54472B1AFA14929B
PDF: Rockwell / Allen-Bradley 1794-ASB Reference Manual PDF

About this manual

This application manual details how the FLEX I/O with ControlLogix Control System can be certified for Safety Integrity Level 2 (SIL2) according to IEC 61508 standards. It outlines the specific catalog numbers of modules that are type-approved and certified for use in SIL2 applications.

The document explains the requirements for hardware designs, firmware functions, and application software development using RSLogix 5000 (PADT). It covers proof tests required by IEC 61508, including testing fault routines and digital channels to ensure they are not stuck in an ON or OFF state.

What's inside

SIL Policy
SIL2 Certification
Proof Tests
FLEX I/O Modules
General Requirements for Application Software
Technical SIL2 Requirements for the Application Program
Failure Estimates

Frequently asked questions

What is the intended application for this manual?

This manual describes FLEX I/O with ControlLogix system components suitable for use in SIL2 applications.

Which programming software is required for SIL2 applications?

The Programming and Debugging Tool (PADT) required is RSLogix 5000.

What configuration must discrete and analog inputs use for SIL 2?

Discrete and analog inputs must be used in a 1oo2 configuration for SIL 2.

Download PDF (4.6 MB)