Rockwell Automation 1440-TB-E XM-944 User Manual

XM-944 Process/Temperature
Terminal Base

Catalog Number 1440-TB-E

Installation Instructions

For information about See page

Important User Information 2
Safety Approvals 4
Power Requirements 6
Interconnect Limit 7
Wiring Requirements 8
RTD Wiring Considerations 8
Grounding Requirements 9
Mounting on the DIN Rail 13
Wiring 16
Agency Certification 22
Specifications 23

2 XM-944 Process/Temperature Terminal Base

WARNING

IMPORTANT

ATTENTION

SHOCK HAZARD

BURN HAZARD

Important User Information

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 available from your local Rockwell Automation sales office or online at

http://literature.rockwellautomation.com

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.

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.

Identifies information that is critical for successful application and understanding of
the product.

) describes some important differences between solid state

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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 consequences.

Labels may be on or inside the equipment (for example, drive or motor) to alert people
that dangerous voltage may be present.

Labels may be on or inside the equipment (for example, drive or motor) to alert people
that surfaces may reach dangerous temperatures.

XM-944 Process/Temperature Terminal Base 3

ATTENTION

ATTENTION

Environment and Enclosure

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 persona l
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.

Preventing Electrostatic Discharge

This equipment is sensitive to electrostatic discharge, which can cause
internal damage and affect normal operation. Follow these guidelines when
you handle this equipment:

• Touch a grounded object to discharge potential static.

• Wear an approved grounding wriststrap.

• Do not touch connectors or pins on component boards.

• Do not touch circuit components inside the equipment.

• If available, use a static-safe workstation.

• When not in use, keep modules in appropriate static-safe packaging.

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4 XM-944 Process/Temperature Terminal Base

WARNING

AVERTISSEMENT

Safety Approvals

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 na meplate indicating
the hazardous location temperature code. When
combining products within a system, the most adverse
temperature code (lowest "T" number) m ay be used to help
determine the overall temperature code of the system.
Combinations of equipment in your system are subject to
investigation by the local Authorit y Having Jurisdiction at
the time of installation.

EXPLOSION HAZARD -

• Do not disconnect eq uipment 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 marqua ges sur
sa plaque d'identification qui indiquent le code de
température pour les environnement s dangereux. Lorsque
plusieurs produits sont combinés dans un système, le code de
température le plus défavorable (co de de température le plus
faible) peut être utilisé pour déterminer le code de
température global du système. Les comb inaisons
d'équipements dans le système sont sujettes à inspection pa r
les autorités locales qualifiées au moment de l'installation.

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.

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XM-944 Process/Temperature Terminal Base 5

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.

Model Catalog Number Haz Location Drawings*

w/o Barriers w/ Barriers

XM-120 1440-VST0201RA
XM-121 1440-VLF0201RA
XM-122 1440-VSE0201RA
XM-123 1440-VAD0201RA
XM-160 1440-VDRS0600RH
XM-161 1440-VDRS0606RH
XM-162 1440-VDRP0600RH
XM-220 1440-SPD0201RB 48640-HAZ 48641-HAZ
XM-320 1440-TPS0201RB 48238-HAZ 48239-HAZ
XM-360 1440-TPR0600RE
XM-361 1440-TUN0600RE
XM-361 1440-TTC0600RE
XM-440 1440-RMA0004RC 48240-HAZ N/A
XM-441 1440-REX0004RD 48241-HAZ N/A
XM-442 1440-REX0304RG 48642-HAZ N/A
* Drawings are available on the included CD

48178-HAZ 48179-HAZ

51263-HAZ 51264-HAZ

48295-HAZ 48299-HAZ

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6 XM-944 Process/Temperature Terminal Base

IMPORTANT

European Zone 2 Certification

If appropriately marked, this equipment is intended for use in potentially explosive
atmospheres as defined by European Union Directive 94/9/CE.

Compliance with the Essential Health and Safety Requirements has been assured by
compliance with EN 50021 (1999).

Observe the following additional Zone 2 certification requirements:

• This equipment is not resistant to sunlight or other sources of UV

radiation.

• The secondary of a current transformer shall not be open–circuited.

• The marking “ALCR” is to be considered “as applicable” to individual

products.

• Equipment of lesser Enclosure Type Rating must be installed in an

enclosure providing at least IP54 protection when applied in Class I,
Zone 2 environments.

• This equipment must be powered by energy limited associated

equipment as defined in EN 50021 when applied in Class I, Zone 2
environments.

• Provision shall be made to prevent the rated voltage from being

exceeded by transient disturbances of more than 40% when applied in
Class I, Zone 2 environments.

Power Requirements

Power Supply

Requires a 24Vdc (±10%) power source per the following table.

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XM-944 Process/Temperature Terminal Base 7

TIP

XM Power Supply Requirements

Listed Class 2 rated supply, or

Protection

Output Voltage 24Vdc ± 10%
Output Power 100 Watts Maximum (~4A @ 24Vdc)
Static Regulation ± 2%
Dynamic Regulation ± 3%
Ripple < 100mVpp
Output Noise Per EN50081-1
Overshoot < 3% at turn-on, < 2% at turn-off
Hold-up Time As 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.

Fused* ITE Listed SELV supply, or
Fused* ITE Listed PELV supply

Refer to the specifications for the specific module for power consumption
and other requirements.

See XM Power Supply Solutions application technique, publication
ICM-AP005A-EN-E, for additional details.

Interconnect Limit

Total current draw through the side connector cannot exceed 3A. A separate
power connection is necessary if the total current draw of the interconnecting
modules is greater than 3A.

If the total current draw for a row of modules is greater than 3A, consider
connecting power to a module near the center of the rail, rather than at a
module on either end. Insure that there is less than 3A load in either direction
from the module where power is connected.

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8 XM-944 Process/Temperature Terminal Base

ATTENTION

IMPORTANT

Wiring Requirements

Use solid or stranded wire. All XM 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

• Recommended strip length 8 millimeters (0.31 inches)

• Minimum insulation rating of 300V

• Soldering the conductor is forbidden

• Wire ferrules can be used with stranded conductors; copper ferrules
recommended

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.

RTD Wiring Considerations

When using RTDs as inputs, give special consideration when selecting the
input cable. Select a cable that has consistent impedance throughout its entire

.

length

The XM-361 requires three wires to compensate for lead resistance error.
We recommend that you do not use 2-wire RTDs if long cable runs are
required, as it reduces the accuracy of the system. However, if a 2-wire
configuration is required, reduce the effect of the lead wire resistance by
using a lower-gauge wire for the cable (for example, use 16 AWG instead of
24 AWG).

When using a 3-wire configuration, the XM-361 compensates for resistance
error due to lead wire length. For example, in a 3-wire configuration, the
XM-361 reads the resistance due to the length of the wires and assumes that
the resistance of the other wire is equal. If the resistance of the individual lead

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