Catalog numbers 1734-OB2, 1734-OB4, 1734-OB8, Series C
Table of Contents
TopicPage
Important User Information 2
Environment and Enclosure3
Preventing Electrostatic Discharge3
North American Hazardous Location Approval4
European Hazardous Location Approval5
Before You Begin6
Install the Mounting Base7
Install the Module8
Install the Removable Terminal Block9
Remove a Mounting Base10
Communicate with the Module11
Wire the Modules12
Interpret Status Indicators16
Specifications17
2 POINT I/O Output Module
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
http://www.rockwellautomation.com/literature/
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.
available from your local Rockwell Automation sales office or online at
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.
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 consequences.
) describes some important differences between
SHOCK HAZARD: Labels may be on or inside the equipment (for example, drive or
motor) to alert people that dangerous voltage may be present.
BURN HAZARD: Labels may be on or inside the equipment (for example, drive or
motor) to alert people that surfaces may reach dangerous temperatures.
IMPORTANT Identifies information that is critical for successful application and understanding of
the product.
Publication 1734-IN018C-EN-E - April 2013
Environment and Enclosure
ATTENTION: This equipment is intended for use in a Pollution Degree 2
industrial environment, in overvoltage Category II applications (as defined in IEC
60664-1), at altitudes up to 2000 m (6562 ft) without derating.
This equipment is considered Group 1, Class A industrial equipment according
to IEC/CISPR 11. Without appropriate precautions, there may be difficulties with
electromagnetic compatibility in residential and other environments due to
conducted and radiated disturbances.
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 enclosure must have suitable
flame-retardant properties to prevent or minimize the spread of flame,
complying with a flame spread rating of 5VA, V2, V1, V0 (or equivalent) if
nonmetallic. 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.
In addition to this publication, see:
• Industrial Automation Wiring and Grounding Guidelines, publication
1770-IN041
• NEMA Standard 250 and IEC 60529, as applicable, for explanations of the
degrees of protection provided by enclosures.
, for additional installation requirements.
POINT I/O Output Module 3
Preventing Electrostatic Discharge
ATTENTION: 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.
• Use a static-safe workstation, if available.
• Store the equipment in appropriate static-safe packaging when not in use.
Publication 1734-IN018C-EN-E - April 2013
4 POINT I/O Output Module
North American Hazardous Location Approval
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 nam eplate indicating
the hazardous location temperature code. When comb ining
products within a system, the most adverse temp erature code
(lowest "T" number) may be used to help determ ine the
overall temperature code of the system. Combinations of
equipment in your system are subject to investigation by the
local Authority Having Jurisdiction at the time of installation.
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 r emoved
or the area is known to be nonhazardous.
Secure any external connection s 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 batt eries, 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 en vironnements de
Classe I Division 2 Groupes A, B, C, D dangereux et no n
dangereux. Chaque produit est livré avec des marquages
sur sa plaque d'identification qui indiquent le code de
température pour les environnements dangereu x. Lorsque
plusieurs produits sont combinés dans un système, le code
de température le plus défavora ble (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.
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.
Publication 1734-IN018C-EN-E - April 2013
POINT I/O Output Module 5
European Hazardous Location Approval
The following applies when the product bears the Ex Marking
This equipment is intended for use in potentially explosive atmospheres as defined by
European Union Directive 94/9/EC.
DEMKO certifies that this equipment has been found to comply with the Essential Health
and Safety Requirements relating to the design and construction of Category 3 equipment
intended for use in Zone 2 potentially explosive atmospheres, given in Annex II to this
Directive.
Compliance with the Essential Health and Safety Requirements has been assured by
compliance with EN 60079-15.
ATTENTION: This equipment is not resistant to sunlight or other sources of
UV radiation.
WARNING: This equipment shall be mounted in an ATEX certified enclosure
with a minimum ingress protection rating of at least IP54 (as defined in
IEC60529) and used in an environment of not more than Pollution Degree 2
(as defined in IEC 60664-1) when applied in Zone 2 environments. The
enclosure must utilize a tool removable cover or door.
WARNING: This equipment shall be used within its specified ratings
defined by Rockwell Automation.
WARNING: Provision shall be made to prevent the rated voltage from being
exceeded by transient disturbances of more than 140% of the rated voltage
when applied in Zone 2 environments.
WARNING: This equipment must be used only with ATEX certified Rockwell
Automation backplanes.
WARNING: Secure any external connections that mate to this equipment by
using screws, sliding latches, threaded connectors, or other means provided
with this product.
WARNING: Do not disconnect equipment unless power has been removed
or the area is known to be nonhazardous.
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6 POINT I/O Output Module
1
10
9
8
7
2
4
5
6
3
The wiring base assembly consists of a
mounting base, 1734-MB, and Removable
Terminal Block, 1734-RTB or 1734-RTBS.
44330
Before You Begin
You can use these Series C POINT I/O™ Output modules with DeviceNet and
PROFIBUS adapters. If you are using RSLogix 5000 software, version 11 or higher, you
can also use the Series C modules with ControlNet and Ethernet adapters.
Use this diagram to identify the external features of the module. The 1734-VHSC5
module is shown here.
To install the mounting base on the DIN rail, proceed as follows:
ATTENTION: This product is grounded through the DIN rail to chassis ground.
Use zinc plated yellow-chromate steel DIN rail to assure proper grounding. The
use of other DIN rail materials (for example, aluminum or plastic) that can
corrode, oxidize, or are poor conductors, can result in improper or intermittent
grounding. Secure DIN rail to mounting surface approximately every 200 mm
(7.8 in.) and use end-anchors appropriately.
1. Position the mounting base vertically above the installed units (adapter, power
supply or existing module).
2. Slide the mounting base down allowing the interlocking side pieces to engage the
adjacent module or adapter.
3. Press firmly to seat the mounting base on the DIN rail. The mounting base snaps
into place.
4. To remove the mounting base from the DIN rail, remove the module and use a
small bladed screwdriver to rotate the base locking screw to a vertical position.
This releases the locking mechanism. Then lift straight up to remove.
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8 POINT I/O Output Module
Install the Module
The module can be installed before or after base installation. Make sure that the mounting
base is correctly keyed before installing the module into the mounting base. In addition,
make sure the mounting base locking screw is positioned horizontal referenced to the base.
WARNING: When you insert or remove the module while backplane power is
on, an electrical arc can occur. This could cause an explosion in hazardous
location installations.
Be sure that power is removed or the area is nonhazardous before proceeding.
Repeated electrical arcing causes excessive wear to contacts on both the
module and its mating connector. Worn contacts may create electrical
resistance that can affect module operation.
1. Using a bladed screwdriver, rotate the keyswitch on the mounting base clockwise
until the number required for the type of module being installed aligns with the
notch in the base.
2. Make certain the DIN rail locking screw is in the horizontal position. You cannot
insert the module if the locking mechanism is unlocked.
3. Insert the module straight down into the mounting base.
4. Press to secure. The module locks into place.
ATTENTION: Do not remove or replace an Adapter Module while power is
applied. Interruption of the backplane can result in unintentional operation or
machine motion.
Publication 1734-IN018C-EN-E - April 2013
POINT I/O Output Module 9
Install the Removable Terminal Block
A Removable Terminal Block (RTB) is supplied with your wiring base assembly. To
remove, pull up on the RTB handle. This allows the mounting base to be removed and
replaced as necessary without removing any of the wiring. To reinsert the Removable
Terminal Block, proceed as follows:
1. Insert the end opposite the handle into the base unit. This end has a curved
section that engages with the wiring base.
2. Rotate the terminal block into the wiring base until it locks itself in place.
3. If an I/O module is installed, snap the RTB handle into place on the module.
WARNING: When you connect or disconnect the Removable Terminal Block
(RTB) with field side power applied, an electrical arc can occur. This could cause
an explosion in hazardous location installations.
Be sure that power is removed or the area is nonhazardous before proceeding.
WARNING: When used in a Class I, Division 2, hazardous location, this
equipment must be mounted in a suitable enclosure with proper wiring method
that complies with the governing electrical codes.
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10 POINT I/O Output Module
Remove a Mounting Base
To remove a mounting base, you must remove any installed module and the module
installed in the base to the right. Remove the Removable Terminal Block, if wired.
1. Unlatch the RTB handle on the I/O module.
2. Pull on the RTB handle to remove the Removable Terminal Block.
3. Press on the module lock on the top of the module.
4. Pull on the I/O module to remove from the base.
5. Repeat steps 1, 2, 3 and 4 for the module to the right.
6. Use a small bladed screwdriver to rotate the orange base locking screw to a vertical
position. This releases the locking mechanism.
7. Lift straight up to remove.
Publication 1734-IN018C-EN-E - April 2013
POINT I/O Output Module 11
Communicate with the Module
I/O messages are sent to (consumed) and received from (produced) the POINT I/O
modules. These messages are mapped onto the processor’s memory. This POINT I/O
output module consumes 1 byte of I/O data (scanner Tx).
Default Data Map for the 1734-OB2 Output Module
Message size : 1 Byte
76543210
Consumes (scanner Tx)Not usedCh1 Ch0 Channel state
Where: 0 = Off, 1 = On
Default Data Map for 1734-OB4
Message size : 1 Byte
76543210
Consumes (scanner Tx)Not usedCh3 Ch2 Ch1 Ch0 Channel state
Where: 0 = Off, 1 = On
Default Data Map for 1734-OB8
Message size : 1 Byte
76543210
Consumes (scanner Tx)Ch7 Ch6 Ch5 Ch4 Ch3 Ch2 Ch1 Ch0 Channel state
Where: 0 = Off, 1 = On
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12 POINT I/O Output Module
24VDC
Source
Output
Module
Status
Network
Status
1734
OB2
0
1
NODE:
24VDC
Source
Output
Module
Status
Network
Status
1734
OB8
0
1
2
3
NODE:
4
5
6
7
Module status
CC
VV
Network status
Output 2
CC
CC
Output 2
Status of Output 1
Status of Output 2
Status of Output 3
C = Common
V = Supply
Status of
Outputs 1 & 5
Status of
Outputs 2 & 6
Status of
Outputs 3 & 7
Status of
Outputs 0 & 4
1734-OB21734-OB41734-OB8
Status of Output 0
Output 0Output 1Output 0Output 0Output 1Output 1
Output 0Output 1Output 3Output 3
Output 4Output 5
Output 6Output 7
Status of
Output 1
Status of
Output 0
443214432544326
Wire the Modules
To wire the modules, refer to the diagrams and tables.
POINT I/O Output Modules
Module
Status
Network
Status
NODE:
24VDC
Source
Output
0
1
2
3
1734
OB4
WARNING: If you connect or disconnect wiring while the field-side power is
on, an electrical arc can occur. This could cause an explosion in hazardous
location installations. Be sure that power is removed or the area is
nonhazardous before proceeding.
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POINT I/O Output Module 13
Out 1
Out 0
Load
1
0
Out 1
Out 0
1
0
Out 1
Out 0
3
2
C
C
5
4
V
V
7
6
Load
V = 12/24V DC
C = Common
Field power is supplied by
the internal power bus
Out 1
Out 0
1
0
Out 1
Out 0
1
0
Out 3
Out 2
3
2
C
C
5
4
C
C
7
6
LoadLoad
V = 12/24V DC
C = Common
Field power is supplied by
the internal power bus
Load
Load
Output Module 1734-OB2
Channel numberOutput terminalCommon terminalPower
Channel 00, 246
Channel 11, 357
Module power is supplied by the internal power bus.
Output Module 1734-OB4
Channel numberOutput terminalCommon terminal
Channel 006
Channel 117
Channel 224
Channel 335
Module power is supplied by the internal power bus.
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14 POINT I/O Output Module
Out 1
Out 0
Load
1
0
Out 1
Out 0
1
0
Out 3
Out 2
3
2
Out 5Out 4
5
4
Out 7Out 6
7
6
Load
Load
Load
Load
Load
Load
Load
CC
Output Module 1734-OB8
Channel number Output terminalCommon terminalPower
Channel 00Common is daisychained
Channel 11
Channel 22
Channel 33
Channel 44
Channel 55
Channel 66
Channel 77
Module power is supplied by the internal power bus.
from either a 1734
adapter, 1734-FPD,
1734-EP24DC or from a
user-supplied external
terminal block.
The 24V DC power for the
module is supplied by the
internal power bus and
originates from the same
adapter, 1734-FPD or
1734-EP24DC as
common.
WARNING: Do not wire more than 2 conductors on any single terminal.
Publication 1734-IN018C-EN-E - April 2013
System
Power
DeviceNet
Power
Network
Status
Module
Status
1734
IB8
3
2
0
1
7
6
4
5
Network
Status
Module
Status
1734
OB8
3
2
0
1
7
6
4
5
Load
Load
Load
Load
Load
Load
Load
Load
DeviceNet
24V DC return
24V DC
Terminal block with
bus connector strip
Note: The 1734-OB8E maximum
load is 1 A max per channel, and
3 A total per module.
Wiring Example for 1734-OB8
POINT I/O Output Module 15
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16 POINT I/O Output Module
24VDC
Source
Output
Module
Status
Network
Status
1734
OB4
0
1
2
3
NODE:
24VDC
Source
Output
Module
Status
Network
Status
1734
OB8
0
1
2
3
NODE:
4
5
6
7
Module status
Network status
Status of Output 0
Status of Output 1
Status of Output 2
Status of Output 3
Status of Outputs 1 & 5
Status of Outputs 2 & 6
Status of Outputs 3 & 7
Status of Outputs 0 & 4
1734-OB21734-OB41734-OB8
Status of
Output 0
Status of
Output 1
443214432544326
Interpret Status Indicators
Refer to the following diagram and table for information on how to interpret the
status indicators.
POINT I/O Output Modules
Module
Status
Network
Status
NODE:
24VDC
Source
Output
0
1
1734
OB2
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POINT I/O Output Module 17
Indicator Status for Modules
StatusDescription
Module status OffNo power applied to device.
GreenDevice operating normally.
Flashing greenDevice needs commissioning due to missing, incomplete, or
Flashing redRecoverable fault.
RedUnrecoverable fault – may require device replacement.
Flashing red/green Device is in self-test mode.
Network status OffDevice is not online:
Flashing greenDevice is online but has no connections in the established state.
GreenDevice is online and has connections in the established state.
Flashing redOne or more I/O connections are in timed-out state.
RedCritical link failure – failed communication device. Device detected
Flashing red/green Communication faulted device – the device has detected a
I/O statusOffAll outputs inactive.
YellowOne or more outputs is active and under control.
incorrect configuration.
- Device has not completed dup_MAC-id test.
- Device not powered – check module status indicator.
error that prevents it from communicating on the network.
network access error and is in communication faulted state. Device
has received and accepted an Identity Communication Faulted
Request – long protocol message.
Specifications
POINT I/O Output Module – 1734-OB2, 1734-OB4, 1734-OB8
AttributeValue
Outputs per module1734-OB2 – 2 (1 group of 2) non-isolated, sourcing
ON-state voltage range, min10V DC
ON-state voltage range, nom24V DC
ON-state voltage range, max28.8V DC
ON-state voltage drop, max0.2V DC
ON-state current, min per channel 1.0 mA
OFF-state voltage, max28.8V DC
1734-OB4 – 4 (1 group of 4) non-isolated, sourcing
1734-OB8 – 8 (1 group of 8) non-isolated, sourcing
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18 POINT I/O Output Module
POINT I/O Output Module – 1734-OB2, 1734-OB4, 1734-OB8
AttributeValue
OFF-state leakage, max0.5 mA
(1)
Output signal delay, max
OFF to ON
ON to OFF
Output current rating1734-OB2 – 1.0 A per output, 2.0 A max per module
Surge current2 A for 10 ms, repeatable every 3 s
Field wiring terminations1734-OB2
(1)
Off–on delay is time from a valid output “On” signal to output energization. On–off delay is time from a valid outpu t
“off” signal to output de-energization.
0.1 ms
0.1 ms
1734-OB4, 1734-OB8 – 1.0 A per output, not to exceed 3.0 A max
per module
Terminal base screw torque0.8 Nm (7 lb-in.)
Indicators1734-OB2
Module location1734-TB or 1734-TBS wiring base assembly
POINTBus current, max @ 5V DC75 mA
Power dissipation, max @ 28.8V DC1734-OB2 – 0.8 W
Thermal dissipation, max @ 28.8V DC1734-OB2 – 2.7 BTU/hr
2 yellow – output status
2 green/red – module/network status
1734-OB4
4 yellow – output status
2 green/red – module/network status
1734-OB8
8 yellow – output status
2 green/red – module/network status
1734-OB4 – 1.2 W
1734-OB8 – 2.0 W
1734-OB4 – 4.1 BTU/hr
1734-OB8 – 6.8 BTU/hr
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POINT I/O Output Module 19
General Specifications
AttributeValue
Isolation voltage50V (continuous), Reinforced Insulation Type
External DC power supply voltage, nom24V DC
External DC power voltage range10...28.8V DC
External DC power supply current1734-OB2 – 8 mA
Dimensions, HxWxD, approx.56.0 x 12.0 x 75.5 mm
Wiring category
Wire sizeDetermined by installed terminal block
Weight, approx.1734-OB2 – 32.60 g (1.15 oz)
North American Temp Code1734-OB2 – T4A
IEC Temp CodeT4
(1)
(1)
Use this conductor category information for planning conductor routing as described in Industrial Automation Wiring
and Grounding Guidelines, publication 1770-I N041.
Type tested @ 2500V DC for 60 s, field-side to system
1734-OB4 – 16 mA
1734-OB8 – 32 mA
(2.21 x 0.47 x 2.97 in.)
2 – on signal ports
1734-OB4 – 33.17 g (1.17 oz)
1734-OB8 – 35.4 g (1.25 oz)
10V/m with 1 kHz sine-wave 80% AM from 80...2000 MHz
10V/m with 200 Hz 50% Pulse 100% AM @ 900 MHz
10V/m with 200 Hz 50% Pulse 100% AM @ 1890 MHz
3V/m with 1 kHz sine-wave 80% AM from 2000...2700 MHz
±4kV @ 5 kHz on signal ports
±1 kV line-line (DM) and ±2 kV line-earth (CM) on signal ports
10V rms with 1 kHz sine-wave 80% AM from 150 kHz...80 MHz
Certifications
Certification (when
product is marked)
c-UL-usUL Listed Industrial Control Equipment, certified for US and Canada. See
CEEuropean Union 2004/108/EC EMC Directive, compliant with:
Value
(1)
UL File E65584.
UL Listed for Class I, Division 2 Group A,B,C,D Hazardous Locations,
certified for U.S. and Canada. See UL File E194810.
EN 61326-1; Meas./Control/Lab., Industrial Requirements
EN 61000-6-2; Industrial Immunity
EN 61000-6-4; Industrial Emissions
EN 61131-2; Programmable Controllers (Clause 8, Zone A and B)
ExEuropean Union 94/9/EC ATEX Directive, compliant with:
KCKorean Registration of Broadcasting and Communications Equipment,
(1)
See the Product Certification lin k at http://www.rockwellautomation.com/products/certification/ for Declaration of
Conformity, Certificates, and other certification details.
Value
(1)
AS/NZS CISPR 11; Industrial Emissions
EN 60079-15; Potentially Explosive Atmospheres, Protection "n"
EN 60079-0; General Requirements
II 3 G Ex nA IIC T4 Gc
DEMKO 04 ATEX 0330347X
compliant with:
Article 58-2 of Radio Waves Act, Clause 3
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22 POINT I/O Output Module
Notes:
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Notes:
POINT I/O Output Module 23
Publication 1734-IN018C-EN-E - April 2013
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Rockwell Automation provides technical information on the Web to assist you in using its products. At
http://www.rockwellautomation.com/support/
technical and application notes, sample code and links to software service packs, and a MySupport feature
that you can customize to make the best use of these tools.
For an additional level of technical phone support for installation, configuration and troubleshooting, we
offer TechConnect support programs. For more information, contact your local distributor or Rockwell
Automation representative, or visit http://www.rockwellautomation.com/support/
, you can find technical manuals, a knowledge base of FAQs,
.
Installation Assistance
If you experience a problem within the first 24 hours of installation, please review the information that's
contained in this manual. You can also contact a special Customer Support number for initial help in getting
your product up and running.
United States or Canada 1.440.646.3434
Outside United States or
contact your local Rockwell Automation representative.
, or
New Product Satisfaction Return
Rockwell Automation tests all of its products to ensure that they are fully operational when shipped from
the manufacturing facility. However, if your product is not functioning and needs to be returned, follow
these procedures.
United StatesContact your distributor. You must provide a Customer Support case number
Outside United StatesPlease contact your local Rockwell Automation representative for the return
(call the phone number above to obtain one) to your distributor to complete
the return process.
procedure.
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