Solid-state equipment has operational characteristics differing from those of electromechanical equipment. Safety
Guidelines for the Application, Installation and Maintenance of Solid State Controls (publication SGI-1.1
your local Rockwell Automation sales office or online at http://www.rockwellautomation.com/literature/
important differences between solid-state equipment and hard-wired electromechanical devices. Because of this difference,
and also because of the wide variety of uses for solid-state equipment, all persons responsible for applying this equipment
must satisfy themselves that each intended application of this equipment is acceptable.
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.
available from
) describes some
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
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.
IMPORTANT
Allen-Bradley, Rockwell Automation, and TechConnect are trademarks of Rockwell Automation, Inc.
DeviceNet is a trademark of the Open DeviceNet Vendor Association (ODVA).
Microsoft and Windows are registered trademarks of the Microsoft Corporation.
Trademarks not belonging to Rockwell Automation are property of their respective companies.
Identifies information that is critical for successful application and understanding of the product.
European Communities (EC) Directive Compliance
If this product has the CE mark it is approved for installation within the European Union and EEA regions. It has been
designed and tested to meet the following directives.
EMC Directive
This product is tested to meet the Council Directive 89/336/EC Electromagnetic Compatibility (EMC) by applying the
following standards, in whole or in part, documented in a technical construction file:
· EN 61000-6-4 EMC — Generic Standards, Part 6-4 — Emission Standard for Industrial Environments (Class A)
· EN 61000-6-2 EMC — Generic Standards, Part 6-2 — Immunity Standard for Industrial Environment
· EN 61326-6-2 Electromagnetic Equipment for Measurement, Control, and Laboratory Use — Industrial EMC
Requirements
This product is intended for use in an industrial environment.
Low Voltage Directive
This product is tested to meet Council Directive 73/23/EEC Low Voltage by applying the safety requirements of EN
61131-2 Programmable Controllers, Part 2 — Equipment Requirements and Tests.
ATEX Directive
This product is certified to meet Council Directive 94/9/EC Equipment and Protective systems intended for use in
Potentially Explosive Atmospheres by applying standard EN 60079-15 - Electrical apparatus for potentially explosive
atmospheres, Part 15 - Type of protection "n", in whole or in part, documented in a technical construction file.
Rockwell Automation Publication GMSI10-UM015B-EN-E - June 20113
4Rockwell Automation Publication GMSI10-UM015B-EN-E - June 2011
Introduction
Installing the XM Electronic
Overspeed Detection System
Table of Contents
Chapter 1
Introducing the Electronic Overspeed Detection System . . . . . . . . . . . 7
This chapter provides an overview of the XM Electronic Overspeed Detection
System. It also discusses the components of the Electronic Overspeed
Detection System.
For information about See page
Introducing the Electronic Overspeed Detection System7
XM Module Components9
Using this Manual10
Introducing the Electronic
Overspeed Detection
System
EODS Events
Shutdown
Relay #1
Shutdown
Relay #2
Shutdown
Relay #3
Alarm
Relay
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
VOTED EODS RELAY
(3)
1440-REX03-04RG
DUAL SPEED
1440-SPD02-01RB
Circuit
Fault
Relay
DUAL SPEED
Transducer
1440-SPD02-01RB
Circuit
Fault
Relay
DUAL SPEED
1440-SPD02-01RB
Circuit
Fault
Relay
Transducer
Transducer
7Publication GMSI10-UM015B-EN-E - June 2011
8 Introduction
The XM EODS is comprised of the following components:
• Two Allen-Bradley™ 1606-XLP30E Power Supplies - The two power
supply modules (85 - 264 VAC input, +24V DC output) provide
redundant power to the EODS. Each power supply is independently
capable of supplying power for the entire system. If one of the power
supply modules fails, the system will continue to operate properly.
• Three XM-220 Dual Speed modules - The three XM-220 modules
individually accept input signals from a proximity probe transducer or
magnetic pickup. Each module measures the speed of the transducer
and compares it against a user-defined danger threshold value. The
modules also record the highest measured speed.
The XM-220 modules include an overspeed/circuit fault output signal,
which is wired to the XM-442 module, as shown in Figure 1.1. If the
XM-220 senses an overspeed condition or detects a failed speed sensor
or logic device, it will activate its overspeed/circuit fault output signal.
Channel 1 of each of the XM-220 modules serves as the overspeed
channel of the electronic overspeed detection system. The on-board
relay in each of the XM-220 modules serves as the circuit fault relay for
that overspeed channel. The XM-220 modules also include two 4-20mA
outputs and a buffered output for each input channel.
For more information about the XM-220, refer to the XM-220 Dual
Speed Module User Guide.
• XM-442 EODS Relay module - The XM-442 module provides the
two-out-of-three or one-out-of-three voting logic. The module includes
four high power relays that serve as the EODS alarm and shutdown
relays.
The XM-442 module accepts the overspeed/circuit fault outputs from
the three XM-220 modules. If at least two of the three overspeed/circuit
fault outputs are active, the XM-442 module activates the three
shutdown relays. If at least one of the three overspeed/circuit fault
outputs is active, or there is failure of a logic device in the XM-442 or a
failure of a power supply, the XM-442 activates the alarm relay. Note
that the shutdown relays are not affected by a single power supply failure
or a circuit fault within the XM-442 module. The XM-442 contains
redundant logic which allows it to operate correctly even in the presence
of a single internal circuit fault.
The EODS modules include LED indicators for indicating power failures,
alarm and shutdown status, and circuit faults. The XM-442 module has no
configurable parameters. The XM-220 module can be configured remotely via
the DeviceNet network, or locally using a serial connection to a PC or laptop.
Publication GMSI10-UM015B-EN-E - June 2011
Introduction 9
The XM EODS can operate stand-alone, or it can be deployed on a standard
or dedicated DeviceNet network where it can provide real-time data and
system information to other XM modules, Programmable Logic Controllers
(PLCs), distributed control systems (DCS), and Condition Monitoring
Systems.
XM Module Components
The XM modules in the XM EODS consist of a terminal base and an
instrument module. The instrument module and terminal base for the XM-220
and XM-442 is shown below.
For more information about the Allen-Bradley 1606-XLP30E Power Supply
modules, refer to the 1606-XLP Power Supply Installation and Operation
manual.
XM-220 Module Components
Figure 1.2 XM-220 Module Components
1
D
U
A
L
S
P
E
E
D
4
4
0
-
S
P
D
0
2
-
0
1
R
B
XM-941 Speed/Position Module
Terminal Base Unit
XM-220 Dual Speed Module
Cat. No. 1440-SPD02-01RB
Cat. No. 1440-TB-B
• XM-941 Position/Speed Module Terminal Base - A DIN rail mounted
base unit that provides terminations for all field wiring required by
Position and Speed modules, including the XM-220.
• XM-220 Dual Speed Module - Mounts on the XM-941 terminal base
unit via a keyswitch and a 96-pin connector. The XM-220 contains the
measurement electronics, processor, relay, and serial interface port for
local configuration.
Publication GMSI10-UM015B-EN-E - June 2011
10 Introduction
XM-442 Module Components
Figure 1.3 XM-442 Module Components
1
V
O
T
E
D
E
O
D
S
R
E
4
4
0
-
R
E
X
0
3
-
0
4
R
L
A
Y
G
Using this Manual
XM-946 EODS Relay Terminal Base Unit
Cat. No. 1440-TB-G
XM-442 Voted EODS Relay Module
Cat. No. 1440-REX03-04RG
• XM-946 EODS Relay Terminal Base Unit - A DIN rail mounted base
unit that provides terminations for all field wiring required by the
XM-442.
• XM-442 Voted EODS Relay Module - Mounts on the XM-946 terminal
base unit via a keyswitch and a 96-pin connector. The XM-442 contains
four on-board relays. The XM-442 has no configurable parameters.
This manual explains the installation and provides the configuration
procedures for the XM Electronic Overspeed Detection System. It is intended
for anyone who installs or uses the XM EODS.
This manual does not contain instructions for installing the Allen-Bradley
1606-XLP30E Power Supply modules. Refer to 1606-XLP Power Supply
Installation and Operation manual.
In addition, it only provides installation instructions for the XM-220 as it
pertains to the EODS. Refer to the XM-220 Dual Speed Module User Guide
for more information about the XM-220 module.
Publication GMSI10-UM015B-EN-E - June 2011
Organization
To help you navigate through this manual, it is organized in chapters based on
these tasks and topics.
Chapter 1 "Introduction" contains an overview of the XM Electronic
Overspeed Detection System and information about this manual.
Introduction 11
Chapter 2 "Installing the XM Electronic Overspeed Detection System"
describes how to install, wire, and operate the XM EODS.
Chapter 3 "Configuring the XM EODS" provides information to help you
configure your XM Electronic Overspeed Detection System using the XM
Serial Configuration Utility software.
Appendix A "Specification" lists the technical specifications for the XM-442
Voted EODS Relay module.
For definitions of terms used in this Guide, see the Glossary at the end of the
Guide.
Document Conventions
There are several document conventions used in this manual, including the
following:
The XM Electronic Overspeed Detection System is also referred to as XM
EODS and electronic overspeed detection system throughout this manual.
TIP
EXAMPLE
A tip indicates additional information which may be
helpful.
This convention presents an example.
Publication GMSI10-UM015B-EN-E - June 2011
12 Introduction
Publication GMSI10-UM015B-EN-E - June 2011
Chapter
2
Installing the XM Electronic Overspeed
Detection System
This chapter discusses how to install and wire the XM Electronic Overspeed
Detection System. It also describes the LED indicators and the basic operation
of the XM EODS.
For information about See page
XM Installation Requirements14
Mounting the Power Supply Modules19
Mounting the Terminal Base Units20
Connecting Wiring for Your XM EODS24
Mounting the XM Modules39
LED Indicators41
Basic Operations44
ATTENTION
Environment and Enclosure
This equipment is intended for use in a Pollution Degree 2
Industrial environment, in overvoltage Category II applications
(as defined in IED publication 60664–1), at altitudes up to 2000
meters without derating.
This equipment is supplied as “open type” equipment. It must be
mounted within an enclosure that is suitably designed for those
specific environmental conditions that will be present, and
appropriately designed to prevent personal injury resulting from
accessibility to live parts. The interior of the enclosure must be
accessible only by the use of a tool. Subsequent sections of this
publication may contain additional information regarding specific
enclosure type ratings that are required to comply with certain
product safety certifications.
See NEMA Standards publication 250 and IEC publication
60529, as applicable, for explanations of the degrees of
protection provided by different types of enclosures.
13Publication GMSI10-UM015B-EN-E - June 2011
14 Installing the XM Electronic Overspeed Detection System
XM Installation
Requirements
This section describes wire, power, and grounding requirements for an XM
system.
Wiring Requirements
Use solid or stranded wire. All wiring should meet the following specifications:
• 12 to 28 AWG copper conductors without pretreatment; 8 AWG
required for grounding the DIN rail for electromagnetic interference
(emi) purposes
• Wire ferrules can be used with stranded conductors; copper ferrules
recommended
ATTENTION
See the XM Documentation and Configuration Utility CD
for Hazardous Locations installation drawings. The XM
Documentation and Configuration Utility CD is packaged
with the XM modules.
Power Requirements
Before installing your module, calculate the power requirements of all modules
in each chassis. The total current draw through the side connector cannot
exceed 3A. Refer to the specifications for the specific modules for power
requirements.
ATTENTION
A separate power connection is necessary if the total
current draw of the interconnecting modules is greater than
3A.
Publication GMSI10-UM015B-EN-E - June 2011
Installing the XM Electronic Overspeed Detection System 15
Figure 2.1 is an illustration of wiring modules using separate power
connections.
Figure 2.1 XM Modules with Separate Power Connections
Power
Supply
DYNAMIC MEASUREMENT
MASTER RELAY
1440-VST02-01RA
1440-RMA00-04RC
EXPANSION RELAY
EXPANSION RELAY
1440-REX00-04RD
1440-REX00-04RD
DYNAMIC MEASUREMENT
POSITION
1440-VST02-01RA
1440-TSP02-01RB
EXPANSION RELAY
EXPANSION RELAY
1440-REX00-04RD
1440-REX00-04RD
Grounding Requirements
Use these grounding requirements to ensure safe electrical operating
circumstances, and to help avoid potential emi and ground noise that can cause
unfavorable operating conditions for your XM system.
DIN Rail Grounding
The XM modules make a chassis ground connection through the DIN rail.
The DIN rail must be connected to a ground bus or grounding electrode
conductor using 8 AWG or 1 inch copper braid. See Figure 2.2 on page 16.
Use zinc-plated, yellow-chromated steel DIN rail (Allen-Bradley part no.
199-DR1 or 199-DR4) or equivalent to assure proper grounding. Using other
DIN rail materials (e.g. aluminum, plastic, etc.), which can corrode, oxidize, or
are poor conductors can result in improper or intermittent platform
grounding.
Publication GMSI10-UM015B-EN-E - June 2011
16 Installing the XM Electronic Overspeed Detection System
Figure 2.2 XM System DIN Rail Grounding
1
Power
Supply
DYNAMIC MEASUREMENT
MASTER RELAY
1440-VST02-01RA
1440-RMA00-04RC
EXPANSION RELAY
EXPANSION RELAY
1440-REX00-04RD
1440-REX00-04RD
DYNAMIC MEASUREMENT
POSITION
1440-VST02-01RA
1440-TSP02-01RB
EXPANSION RELAY
EXPANSION RELAY
1440-REX00-04RD
1440-REX00-04RD
1
Power
Supply
Publication GMSI10-UM015B-EN-E - June 2011
DYNAMIC MEASUREMENT
1440-VST02-01RA
EXPANSION RELAY
1440-REX00-04RD
DYNAMIC MEASUREMENT
1440-VST02-01RA
EXPANSION RELAY
1440-REX00-04RD
1 Use 14 AWG wire. If it is desired to isolate the power supply because of possible ground loops, do not connect
24V Common to earth as illustrated in Figure 2.2. When the 24V supply is isolated from earth, it is
recommended to use an isolator on the RS-232 lines. Refer to the XM-220 Dual Speed Module User Guide.
The grounding wire can be connected to the DIN rail using a DIN Rail
Grounding Block (Figure 2.3).
Installing the XM Electronic Overspeed Detection System 17
Figure 2.3 DIN Rail Grounding Block
To Earth Ground
AWG 8 Wire
Din Rail Grounding Block
Cat. No. 1492-WG10
Panel/Wall Mount Grounding
The XM modules can also be mounted to a conductive mounting plate that is
grounded. See Figure 2.5. Use the grounding screw hole provided on the
terminal base to connect the mounting plate the Chassis terminals.
Figure 2.4 Grounding Screw on XM Terminal Base
Screw hole for
panel/wall mounting.
Grounding screw
hole for panel/ wall
mounting.
Publication GMSI10-UM015B-EN-E - June 2011
18 Installing the XM Electronic Overspeed Detection System
Figure 2.5 Panel/Wall Mount Grounding
1
Power
Supply
1
Power
Supply
1 Use 14 AWG wire. If it is desired to isolate the power supply because of possible ground loops, do not connect
24V Common to earth as illustrated in Figure 2.2. When the 24V supply is isolated from earth, it is
recommended to use an isolator on the RS-232 lines. Refer to the XM-220 Dual Speed Module User Guide.
Publication GMSI10-UM015B-EN-E - June 2011
Installing the XM Electronic Overspeed Detection System 19
24V Common Grounding
It is recommended that all 24V power to the XM modules is grounded. When
two or more power supplies power the XM system, ground the 24V Commons
at a single point, such as the ground bus bar.
For applications where redundant power supplies are used, only one power
supply needs to be grounded. The XM module ties the two 24V Common
lines together.
IMPORTANT
The 24V Common and Signal Common terminals are
internally connected. They are isolated from the Chassis
terminals unless they are connected to ground as described
in this section. See Terminal Block Assignments on page 24
for more information.
Transducer Grounding
Make certain the transducers are electrically isolated from earth ground. Cable
shields must be grounded at one end of the cable, and the other end left
floating or not connected. It is recommended that where possible, the cable
shield be grounded at the XM terminal base by connecting to a Chassis
terminal and not at the transducer.
Switch Input Grounding
The Switch Input circuits are electrically isolated from other circuits. It is
recommended that the Switch RTN signal be grounded at a single point.
Connect the Switch RTN signal to the XM terminal base (Chassis terminal) or
directly to the DIN rail, or ground the signal at the switch or other equipment
that is wired to the switch.
Mounting the Power Supply
Modules
The XM EODS requires two Allen Bradley power supply modules (Cat. No.
1606-XLP30E). The power supply modules are DIN rail mountable and
provide redundant power to the XM EODS. These modules provide all the
system power and each can be powered by +24V dc and/or 85 to 264V ac.
The outputs of the two power supply modules are connected to the terminal
base units of the XM modules. See Figure 2.7 on page 29. A failure in one of
the power supplies will not affect the operation of the EODS.
Refer to the documentation that was shipped with the 1606-XLP power supply
for instructions on how to install the power supply modules.
Publication GMSI10-UM015B-EN-E - June 2011
20 Installing the XM Electronic Overspeed Detection System
Mounting the Terminal
Base Units
The XM family includes several different terminal base units to serve all of the
measurement modules.
• The XM-941 terminal base, Cat. No. 1440-TB-B, is the only terminal
base unit used with the XM-220 module.
• The XM-946 terminal base, Cat. No. 1440-TB-G, is the only terminal
base unit used with the XM-442 module.
The terminal base can be DIN rail or wall/panel mounted. Refer to the
specific method of mounting below.
ATTENTION
The XM modules make a chassis ground connection
through the DIN rail. Use zinc plated, yellow chromated
steel DIN rail to assure proper grounding. Using other
DIN rail materials (e.g. aluminum, plastic, etc.), which can
corrode, oxidize or are poor conductors can result in
improper or intermittent platform grounding.
You can also mount the terminal base to a grounded
mounting plate. Refer to Panel/Wall Mount Grounding on
page 17.
DIN Rail Mounting
Use the steps below to mount the XM-941 and XM-946 terminal base units on
a DIN rail. We recommend you mount the XM-946 terminal base first, next to
the power supply modules (see Figure 2.7 on page 29).
Publication GMSI10-UM015B-EN-E - June 2011
Installing the XM Electronic Overspeed Detection System 21
1. Position the XM-946 terminal base on the 35 x 7.5mm DIN rail (A)
(A-B pt no. 199-DR1 or 199-DR4).
Position terminal base at a slight angle and hook over the top of the DIN rail.
2. Slide the terminal base unit over leaving room for the side
connector (B).
3. Rotate the terminal base onto the DIN rail with the top of the rail
hooked under the lip on the rear of the terminal base.
4. Press down on the terminal base unit to lock the terminal base on the
DIN rail. If the terminal base does not lock into place, use a screwdriver
or similar device to open the locking tab, press down on the terminal
base until flush with the DIN rail and release the locking tab to lock the
base in place.
Publication GMSI10-UM015B-EN-E - June 2011
22 Installing the XM Electronic Overspeed Detection System
Interconnecting Terminal Base Units
Follow the steps below to install the XM-941 terminal base units.
IMPORTANT
1. Position the XM-941 terminal base on the 35 x 7.5mm DIN rail (A).
2. Make certain the side connector (B) is fully retracted into the base unit.
3. Slide the terminal base unit over tight against the neighboring terminal
base. Make sure the hook on the terminal base slides under the edge of
the terminal base unit.
4. Press down on the terminal base unit to lock the terminal base on the
DIN rail. If the terminal base does not lock into place, use a screwdriver
or similar device to open the locking tab, press down on the terminal
base until flush with the DIN rail and release the locking tab to lock the
base in place.
5. Gently push the side connector into the side of the neighboring terminal
base unit to complete the backplane connection.
Make certain you install the terminal base units in order of
left to right.
Publication GMSI10-UM015B-EN-E - June 2011
6. Repeat the steps to install the other two XM-941 terminal base units.
Panel/Wall Mounting
Installation on a wall or panel consists of:
• laying out the drilling points on the wall or panel
• drilling the pilot holes for the mounting screws
• installing the terminal base units and securing them to the wall or panel
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