1 - introduction, Apter 1, Introduction – Rockwell Automation 1606-XLP XM Electronic Overspeed Detection System User Manual
Page 7: Chapter, The xm

7
Publication GMSI10-UM015B-EN-E - June 2011
Chapter
1
Introduction
This chapter provides an overview of the XM Electronic Overspeed Detection
System. It also discusses the components of the Electronic Overspeed
Detection System.
Introducing the Electronic
Overspeed Detection
System
The XM
®
Electronic Overspeed Detection System (EODS) is a highly
reliable, redundant system that fully meets the performance, measurement, and
relay requirements of the American Petroleum Institute Standards 670 and 612
as pertaining to overspeed protection. It is intended for use on gas and steam
turbine driven machinery where protection is required to prevent potentially
catastrophic failures of the machine from overspeed events.
Figure 1.1 XM EODS
For information about
See page
Introducing the Electronic Overspeed Detection System
VOTED EODS RELAY
1440-REX03-04RG
DUAL SPEED
1440-SPD02-01RB
DUAL SPEED
1440-SPD02-01RB
DUAL SPEED
1440-SPD02-01RB
EODS Events
(3)
Transducer
Transducer
Shutdown
Relay #1
Shutdown
Relay #2
Shutdown
Relay #3
Alarm
Relay
Circuit
Fault
Relay
Circuit
Fault
Relay
Circuit
Fault
Relay
Transducer