Rockwell Automation 1000 Safety Lockout System - Manual (Page 7)

1 Publication 1000-UM001B-US-P - July 2000
Preface
Purpose of the Safety
Lockout System The purpose of the Safety Lockout System (SLS) is to provide a highly reliable
and long-lived system for the isolation of a multi-motor machine (or portion
thereof) with such isolation operable from multiple remote locations.
Safety Requirements and
Guidelines The SLS is one subsystem in the machine control system. As is true in
installing any machine control system, it is necessary to follow the instructions
that accompany the control system. It is further necessary to follow the
requirements of the relevant regulatory bodies. These can include NFPA 70
(The National Electrical Code), NFPA 70E, NFPA 79, relevant OSHA
requirements and relevant State and Local codes.
• EN 50081-2 EMC — Generic Emission Standard, Part 2 — Industrial
Environment
• EN 50082-2 EMC — Generic Immunity Standard, Part 2 — Industrial
Environment
Definitions Safety lockout system (SLS) — Isolation system designed to meet lockout/
tagout requirements by the use of remote lockout switches, voltage
supervision monitor and an isolation contactor having positive guided auxiliary
contacts.
SLS box — SLS enclosure and components other than the SLS switches.
SLS switch — remote lockout switch with verification light.
Expansion box — provisions for more than four (4) SLS switches.
Positive guidance — per IEC 947-5-1 is a performance relationship between
contacts of different types (i.e., N.O. and N.C.)