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 XM are trademarks of Rockwell Automation, Inc.
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.
Safety Approvals
3
The following information applies when operating this
equipment in hazardous locations.
Products marked "CL I, DIV 2, GP A, B, C, D" are suitable for use in
Class I Division 2 Groups A, B, C, D, Hazardous Locations and
nonhazardous locations only. Each product is supplied with markings
on the rating nameplate indicating the hazardous location
temperature code. When combining products within a system, the
most adverse temperature code (lowest "T" number) may be used to
help determine the overall temperature code of the system.
Combinations of equipment in your system arfe subject to
investigation by the local Authority Having Jurisdiction at the time of
installation.
WARNING:
EXPLOSION HAZARD
•Do not disconnect equipment unless power has
been removed or the area is known to be
nonhazardous.
•Do not disconnect connections to this equipment
unless power has been removed or the area is
known to be nonhazardous. Secure any external
connections that mate to this equipment by using
screws, sliding latches, threaded connectors, or
other means provided with this product.
•Substitution of components may impair suitability
for Class I, Division 2.
•If this product contains batteries, they must only be
changed in an area known to be nonhazardous.
Informations sur l’utilisation de cet équipement en
environnements dangereux.
Les produits marqués "CL I, DIV 2, GP A, B, C, D" ne conviennent
qu'à une utilisation en environnements de Classe I Division 2
Groupes A, B, C, D dangereux et non dangereux. Chaque produit
est livré avec des marquages sur sa plaque d'identification qui
indiquent le code de température pour les environnements
dangereux. Lorsque plusieurs produits sont combinés dans un
système, le code de température le plus défavorable (code de
température le plus faible) peut être utilisé pour déterminer le
code de température global du système. Les combinaisons
d'équipements dans le système sont sujettes à inspection par les
autorités locales qualifiées au moment de l'installation.
WARNING:
RISQUE D’EXPLOSION
•Couper le courant ou s'assurer que
l'environnement est classé non dangereux
avant de débrancher l'équipement.
•Couper le courant ou s'assurer que
l'environnement est classé non dangereux
avant de débrancher les connecteurs. Fixer tous
les connecteurs externes reliés à cet
équipement à l'aide de vis, loquets coulissants,
connecteurs filetés ou autres moyens fournis
avec ce produit.
•La substitution de composants peut rendre cet
équipement inadapté à une utilisation en
environnement de Classe I, Division 2.
•S'assurer que l'environnement est classé non
dangereux avant de changer les piles.
IMPORTANT
Wiring to or from this device, which enters or leaves the system enclosure, must utilize wiring methods suitable for
Class I, Division 2 Hazardous Locations, as appropriate for the installation in accordance with the product drawings as
indicated in the following table.
Rockwell Automation Publication GMSI10-UM009D-EN-P - June 2011
8 Table of Contents
Rockwell Automation Publication GMSI10-UM009D-EN-P - June 2011
Chapter
Introduction
This chapter provides an overview of the XM-440 Master Relay module. It
also discusses the components of the module.
For information about See page
Introducing the XM-440 Relay Module9
XM-440 Module Components10
Using this Manual10
1
Introducing the XM-440
Relay Module
The XM-440 Master Relay module combines four relay outputs with XM bus
master capabilities to provide remote, shared, and voted relay operation for
distributed XM measurement modules. It is a member of the Allen-Bradley™
®
XM
Series, a family of DIN rail mounted condition monitoring and
protection modules that operate both in stand-alone applications or integrate
with Programmable Logic Controllers (PLCs) and control system networks.
The XM-440 offers four high power relays suitable for use in most protection
applications. The module also supports connecting one or two XM-441
Expansion Relay modules, providing a total of up to 12 relays.
The module provides “A Out of B” voting logic. This logic, defined uniquely
per relay, can be applied to an alarm status broadcast from XM measurement
modules located anywhere on the XM bus. The XM-440 can also send a
trigger event to a group of XM measurement modules when one or more of its
relays are activated, causing the XM measurement modules to collect their
triggered trend data.
The XM-440 module is configurable over a DeviceNet network or using a
serial connection to a PC or laptop. For list of configuration parameters for the
XM-440, refer to Chapter 3.
9Rockwell Automation Publication GMSI10-UM009D-EN-P - June 2011
10 Introduction
XM-440 Module
Components
The XM-440 consists of a terminal base unit and an instrument module. The
XM-440 Master Relay Module and the XM-942 Master Relay Terminal Base
are shown below.
Figure 1.1 XM-440 Module Components
XM-942 Master Relay Module Terminal Base Unit
Cat. No. 1440-TB-C
• XM-942 Master Relay Terminal Base Unit - A DIN rail mounted base
unit that provides terminations for all field wiring required by the
XM-440.
M
A
S
T
E
R
R
E
L
A
Y
1
4
4
0
R
-
M
A
0
0
0
-
4
R
C
XM-440 Master Relay Module
Cat. No. 1440-RMA00-04RC
Using this Manual
• XM-440 Master Relay Module - Mounts on the XM-942 terminal base
unit via a keyswitch and a 96-pin connector. The XM-440 contains the
processor, four on-board relays, and serial interface port for local
configuration.
IMPORTANT
Up to two XM-441 Expansion Relay modules may be
connected to the XM-440 module via the terminal base
unit.
When connected to the XM-440, the Expansion Relay
modules simply “expand” the capability of the XM-440 by
providing an additional four to eight relays. The XM-440
controls the Expansion Relay modules by extending to
them the same logic and functional controls as the XM-440
module’s on-board relays.
This manual introduces you to the XM-440 Master Relay module. It is
intended for anyone who installs, configures, or uses the XM-440 Master Relay
module.
Rockwell Automation Publication GMSI10-UM009D-EN-P - June 2011
Introduction 11
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 this manual and the
XM-440 module.
Chapter 2 “Installing the XM-440 Relay Module” describes how to install,
wire, and use the XM-440 module.
Chapter 3 “Configuration Parameters” provides a complete listing and
description of the XM-440 parameters. The parameters can be viewed and
edited using the XM Serial Configuration Utility software and a personal
computer.
Appendix A “Specifications” lists the technical specifications for the XM-440
module.
Appendix B “DeviceNet Information” provides information to help you
configure the XM-440 over a DeviceNet network.
Appendix C “DeviceNet Objects” provides information on the DeviceNet
Objects supported by the XM-440 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-440 Relay module is referred to as XM-440, Master Relay module,
device, or module throughout this manual.
TIP
A tip indicates additional information which may be
helpful.
EXAMPLE
Rockwell Automation Publication GMSI10-UM009D-EN-P - June 2011
This convention presents an example.
12 Introduction
Rockwell Automation Publication GMSI10-UM009D-EN-P - June 2011
Chapter
2
Installing the XM-440 Master Relay Module
This chapter discusses how to install and wire the XM-440 Master Relay
Module. It also describes the module indicators and the basic operations of the
module.
For information about See page
XM Installation Requirements14
Mounting the Terminal Base Unit21
Connecting Wiring for Your Module24
Mounting the Module36
Module Indicators38
Basic Operations39
ATTENTION
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.
13Rockwell Automation Publication GMSI10-UM009D-EN-P - June 2011
14 Installing the XM-440 Master Relay Module
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:
• 14 to 22 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
interconnected via their side connectors. The total current draw through the
side connector cannot exceed 3A. Refer to the specifications for the specific
modules for power requirements.
ATTENTION
Figure 2.1 is an illustration of wiring modules using separate power
connections.
A separate power connection is necessary if the total
current draw of the interconnecting modules is greater than
3A.
Rockwell Automation Publication GMSI10-UM009D-EN-P - June 2011
Any limited power
source that satisfies
the requirements
specified below
Installing the XM-440 Master Relay Module 15
Figure 2.1 XM Modules with Separate Power Connections
Power Supply Requirements
XM Power Supply Requirements
Listed Class 2 rated supply, or
Protection
Fused* ITE Listed SELV supply, or
Fused* ITE Listed PELV supply
Output Voltage24 Vdc ± 10%
Output Power100 Watts Maximum (~4A @ 24 Vdc)
Static Regulation± 2%
Dynamic Regulation± 3%
Ripple< 100mVpp
Output NoisePer EN50081-1
Overshoot< 3% at turn-on, < 2% at turn-off
Hold-up TimeAs required (typically 50mS at full rated load)
* When a fused supply is used the fuse must be a 5 amp, listed, fast acting fuse such as
provided by Allen-Bradley part number 1440-5AFUSEKIT
Rockwell Automation Publication GMSI10-UM009D-EN-P - June 2011
16 Installing the XM-440 Master Relay Module
IMPORTANT
See Application Technique "XM Power Supply Solutions",
publication ICM-AP005A-EN-E, for guidance in
architecting power supplies for XM systems.
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.
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.
Rockwell Automation Publication GMSI10-UM009D-EN-P - June 2011
Figure 2.2 XM System DIN Rail Grounding
Installing the XM-440 Master Relay Module 17
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
DYNAMIC MEASUREMENT
1440-VST02-01RA
EXPANSION RELAY
1440-REX00-04RD
1 Use 14 AWG wire.
The grounding wire can be connected to the DIN rail using a DIN Rail
Grounding Block (Figure 2.3).
Rockwell Automation Publication GMSI10-UM009D-EN-P - June 2011
DYNAMIC MEASUREMENT
1440-VST02-01RA
EXPANSION RELAY
1440-REX00-04RD
18 Installing the XM-440 Master Relay Module
Figure 2.3 Grounded DIN Rail with Block
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
Rockwell Automation Publication GMSI10-UM009D-EN-P - June 2011
Figure 2.5 Panel/Wall Mount Grounding
1
Power
Supply
Installing the XM-440 Master Relay Module 19
1
1 Use 14 AWG wire.
Power
Supply
Rockwell Automation Publication GMSI10-UM009D-EN-P - June 2011
20 Installing the XM-440 Master Relay Module
24V Common Grounding
24 V power to the XM modules must be grounded. When two or more power
supplies power the XM system, ground the 24 V Commons at a single point,
such as the ground bus bar.
IMPORTANT
If it is not possible or practical to ground the -24Vdc
supply, then it is possible for the system to be installed and
operate ungrounded. However, if installed ungrounded
then the system must not be connected to a ground
through any other circuit unless that circuit is isolated
externally. Connecting a floating system to a non-isolated
ground could result in damage to the XM module(s)
and/or any connected device. Also, operating the system
without a ground may result in the system not performing
to the published specifications regards measurement
accuracy and communications speed, distance or reliability.
IMPORTANT
The 24 V 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. Refer to Terminal Block Assignments on
page 25 for more information.
DeviceNet Grounding
The DeviceNet network is functionally isolated and must be referenced to
earth ground at a single point. XM modules do not require an external
DeviceNet power supply. Connect DeviceNet V- to earth ground at one of the
XM modules, as shown in Figure 2.6.
Figure 2.6 Grounded DeviceNet V- at XM Module
To
Ground
Bus
Rockwell Automation Publication GMSI10-UM009D-EN-P - June 2011
Installing the XM-440 Master Relay Module 21
Mounting the Terminal
Base Unit
ATTENTION
For more information on the DeviceNet installation, refer to the ODVA
Planning and Installation Manual - DeviceNet Cable System, which is available
on the ODVA web site (http://www.odva.org).
Use of a separate DeviceNet power supply is not
permitted. See Application Technique "XM Power Supply
Solutions", publication ICM-AP005A-EN-E, for guidance
in using XM with other DeviceNet products.
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.
The XM family includes several different terminal base units to serve all of the
XM modules. The XM-942 terminal base, Cat. No. 1440-TB-C, is the only
terminal base unit used with the XM-440.
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 18.
DIN Rail Mounting
Use the following steps to mount the XM-942 terminal base unit on a DIN rail
(A-B pt no. 199-DR1 or 199-DR4).
Rockwell Automation Publication GMSI10-UM009D-EN-P - June 2011
22 Installing the XM-440 Master Relay Module
1. Position the terminal base on the 35 x 7.5mm DIN rail (A).
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.
Rockwell Automation Publication GMSI10-UM009D-EN-P - June 2011
Installing the XM-440 Master Relay Module 23
Interconnecting Terminal Base Units
Follow the steps below to install another terminal base unit on the DIN rail.
IMPORTANT
1. Position the 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 to complete the backplane connection.
Make certain you install the terminal base units in order of
left to right.
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
Rockwell Automation Publication GMSI10-UM009D-EN-P - June 2011
24 Installing the XM-440 Master Relay Module
Side Connector
Use the following steps to install the terminal base on a wall or panel.
1. Lay out the required points on the wall/panel as shown in the drilling
dimension drawing below.
Connecting Wiring for Your
Module
2. Drill the necessary holes for the #6 self-tapping mounting screws.
3. Secure the terminal base unit using two #6 self-tapping screws.
4. To install another terminal base unit, retract the side connector into the base unit. Make sure it is fully retracted.
5. Position the terminal base unit up tight against the neighboring terminal
base. Make sure the hook on the terminal base slides under the edge of
the terminal base unit.
6. Gently push the side connector into the side of the neighboring terminal
base to complete the backplane connection.
7. Secure the terminal base to the wall with two #6 self-tapping screws.
Wiring to the module is made through the terminal base unit on which the
module mounts. The XM-440 is compatible only with the XM-942 terminal
base unit, Cat. No. 1440-TB-C.
Rockwell Automation Publication GMSI10-UM009D-EN-P - June 2011
Installing the XM-440 Master Relay Module 25
Figure 2.7 XM-942 Terminal Base Unit
XM-942, Cat. No. 1440-TB-C
Terminal Block Assignments
The terminal block assignments and descriptions for the XM-440 module are
shown below.
ATTENTION
The terminal block assignments are different for different
XM modules. The following table applies only to the
XM-440. Refer to the installation instructions for the
specific XM module for its terminal assignments.
WARNING
EXPLOSION HAZARD
Do not disconnect equipment unless power has been
removed or the area is known to be nonhazardous.
Do not disconnect connections to this equipment unless
power has been removed or the area is known to be
nonhazardous. Secure any external connections that mate
to this equipment by using screws, sliding latches, threaded
connectors, or other means provided with this product.
Terminal Block Assignments
No.NameDescription
024V InConnection to primary external +24V power supply, positive
side
124V CommonConnection to external +24V power supply, negative side
(internally DC-coupled to circuit ground)
2Reset RelaySwitch input to reset internal relay (active low)
3Reserved
4Relay 1 N.O. 2Relay #1 Normally Open contact 2
5Relay 1 N.O. 1 Relay #1 Normally Open contact 1
6Relay 2 N.O. 2Relay # 2 Normally Open contact 2
Rockwell Automation Publication GMSI10-UM009D-EN-P - June 2011
26 Installing the XM-440 Master Relay Module
Terminal Block Assignments
No.NameDescription
7No Connection
8Relay 2 N.O. 1Relay # 2 Normally Open contact 1
9Relay 3 N.O. 2Relay #3 Normally Open contact 2
10No Connection
11Relay 3 N.O. 1Relay #3 Normally Open contact 1
12Relay 4 N.O. 2Relay #4 Normally Open contact 2
13Relay 4 N.O. 1Relay #4 Normally Open contact 1
14No Connection
15ChassisConnection to DIN rail ground spring or panel mounting hole
16TxDPC serial port, transmit data
17XRTNCircuit return for TxD and RxD
18Switch RTNSwitch return, Reset Relay
1924V OutDiode-ORed output for 24V In 1 and 24V In 2
DO NOT CONNECT
20Relay 1 Common 2Relay #1 Common contact 2
21Relay 1 Common 1Relay #1 Common contact 1
22Relay 2 Common 2Relay #2 Common contact 2
23No Connection
24Relay 2 Common 1Relay #2 Common contact 1
25Relay 3 Common 2Relay #3 Common contact 2
26No Connection
27Relay 3 Common 1Relay #3 Common contact 1
28Relay 4 Common 2Relay #4 Common contact 2
29Relay 4 Common 1Relay #4 Common contact 1
30No Connection
31Chassis Connection to DIN rail ground spring or panel mounting hole
32DNet V (+)DeviceNet bus power input, positive side (red wire)
33CAN_HighDeviceNet bus connection, high differential (white wire)
34RxDPC serial port, receive data
35No Connection
36No Connection
37No Connection
38Relay 1 N.C. 2Relay #1 Normally Closed contact 2
39Relay 1 N.C. 1Relay #1 Normally Closed contact 1
40Relay 2 N.C. 2Relay #2 Normally Closed contact 2
41No Connection
Rockwell Automation Publication GMSI10-UM009D-EN-P - June 2011
Installing the XM-440 Master Relay Module 27
Terminal Block Assignments
No.NameDescription
42Relay 2 N.C. 1Relay #2 Normally Closed contact 1
43Relay 3 N.C. 2Relay #3 Normally Closed contact 2
44No Connection
45Relay 3 N.C. 1Relay #3 Normally Closed contact 1
46Relay 4 N.C. 2Relay #4 Normally Closed contact 2
47Relay 4 N.C. 1Relay #4 Normally Closed contact 1
48No Connection
49Chassis Connection to DIN rail ground spring or panel mounting hole
50DNet V (-)DeviceNet bus power input, negative side (black wire)
51CAN_LowDeviceNet bus connection, low differential (blue wire)
Connecting the Power Supply
Power supplied to the module must be nominally 24 Vdc (±10%) and must be
a Class 2 rated circuit.
Wire the DC-input power supply to the terminal base unit as shown in Figure
2.8.
Figure 2.8 DC Input Power Supply Connections
24V dcPowerSupply
IMPORTANT
+
-
-
A Class 2 circuit can be provided by use of an NEC Class 2
rated power supply, or by using a SELV or PELV rated
power supply with a 5 Amp current limiting fuse installed
before the XM module(s).
Rockwell Automation Publication GMSI10-UM009D-EN-P - June 2011
28 Installing the XM-440 Master Relay Module
IMPORTANT
24Vdc needs to be wired to terminal 0 (+24 V In) to
provide power to the device and other XM modules linked
to the wired terminal base via the side connector.
ATTENTION
The power connections are different for different XM
modules. Refer to the installation instructions for your
specific XM module for complete wiring information.
Connecting the Relays
The XM-440 has both Normally Open (NO) and Normally Closed (NC) relay
contacts. Normally Open relay contacts close when the control output is
energized. Normally Closed relay contacts open when the control output is
energized.
The alarms associated with the relay and whether the relay is normally
de-energized (non-failsafe) or normally energized (failsafe) depends on the
configuration of the module. Refer to Relay Parameters on page 45 for details.
There are four double pole double throw relays in the XM-440. All relay
contacts (24 total) are available for wiring on the terminal base unit, as shown
in Table 2.1 on page 30.
IMPORTANT
All XM relays are double pole. This means that each relay
has two contacts in which each contact operates
independently but identically. The following information
and illustrations show wiring solutions for both contacts;
although, in many applications it may be necessary to wire
only one contact.
TIP
Up to two Expansion Relay modules may be connected to
the XM-440 to provide an additional four to eight relays.
Refer to the XM-441 Expansion Relay Module User Guide
for wiring details.
Rockwell Automation Publication GMSI10-UM009D-EN-P - June 2011
Installing the XM-440 Master Relay Module 29
IMPORTANT
T
The NC/NO terminal descriptions (pages 25–27)
correspond to a de-energized (unpowered) relay.
When the relay is configured for non-failsafe operation, the
relay is normally de-energized.
When the relay is configured for failsafe operation, the
relay is normally energized, and the behavior of the NC and
NO terminals is inverted.
Rockwell Automation Publication GMSI10-UM009D-EN-P - June 2011
Figures 2.9 and 2.10 illustrate the behavior of the NC and NO terminals when
the relay is wired for failsafe, alarm or nonalarm condition or non-failsafe,
alarm or nonalarm condition.