Important User Information 2
Environment and Enclosure3
Preventing Electrostatic Discharge3
North American Hazardous Location Approval5
Additional Resources6
About the Module7
Mount the I/O Base9
Install the Module10
Install the Removable Terminal Block11
Remove a Mounting Base12
Communicate with Your Module13
Wire the Module14
Interpret Status Indicators18
Specifications20
2 POINT I/O 2 and 4 Relay Output Modules
IMPORTANT
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
Publication 1734-IN055F-EN-E - March 2012
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.
Identifies information that is critical for successful application and understanding of
the product.
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 or be approved for the application
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
1770-4.1
, for additional installation requirements.
• NEMA Standard 250 and IEC 60529, as applicable, for explanations of the
degrees of protection provided by enclosures.
POINT I/O 2 and 4 Relay Output Modules 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 wrist strap.
• 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-IN055F-EN-E - March 2012
4 POINT I/O 2 and 4 Relay Output Modules
European Hazardous Location Approval
European Zone 2 Certification (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.
ATTENTION: POINT I/O 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.
WARNING: This equipment must be installed in an enclosure providing at least
IP54 protection when applied in Class I, Zone 2 environments.
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 40% when applied in Class I,
Zone 2 environments.
WARNING: Do not disconnect equipment unless power has been removed or
the area is known to be nonhazardous.
WARNING: Exposure to some chemicals may degrade the sealing properties of
materials used in the following devices:
Relay K2 and K4, Epoxy for 1734-OW2, and Relay K1 through K4, Epoxy for
1734-OW4.
It is recommended that the User periodically inspect these devices for any
degradation of properties and replace the module if degradation is found.
Publication 1734-IN055F-EN-E - March 2012
POINT I/O 2 and 4 Relay Output Modules 5
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 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 are 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.
AVERTISSEMENT:
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-IN055F-EN-E - March 2012
6 POINT I/O 2 and 4 Relay Output Modules
Additional Resources
These documents contain additional information concerning related Rockwell
Automation products.
ResourceDescription
1769-L32E and 1769-L35E CompactLogix
Controller Installation Instructions,
publication 1768-IN020
1769-L32C and 1769-L35CR
CompactLogix Controller Installation
Instructions, publication 1769-IN070
Industrial Automation Wiring and
Grounding Guidelines, publication
1770-4.1
Product Certifications website
http://www.ab.com
.
.
.
.
Provides details on how to assemble and
mount the controller, how to upgrade firmware,
and controller technical specifications.
Provides details on how to assemble and
mount the controller, how to upgrade firmware,
.
and controller technical specifications.
Provides details on how to assemble and
mount the controller, how to upgrade firmware,
and controller technical specifications.
Provides information about installing the
1769-SDN module and technical
.
specifications.
Provides general guidelines for installing a
Rockwell Automation industrial system.
Provides declarations of conformity,
certificates, and other certification details.
Publication 1734-IN055F-EN-E - March 2012
POINT I/O 2 and 4 Relay Output Modules 7
M
odule
Status
N
e
tw
ork
S
ta
tu
s
N
O
D
E
:
0
1
2
3
1
2
3
4
5
6
7
8
9
10
45720
About the Module
These POINT™ I/O 2 and 4 Relay Output Modules, 1734-OW2, 1734-OW4, Series C
products can be used with DeviceNet and PROFIBUS adapters. They can be used with
ControlNet and Ethernet adapters using RSLogix 5000, version 11 or later.
See the figures to familiarize yourself with major parts of the modules. The wiring base
assembly consists of a mounting base, 1734-MB, and removable terminal block, 1734-RTB
or 1734-RTBS, and 1734-TOP or 1734-TOPS one-piece terminal base.
Modules Mounted on Removeable Terminal Block and Mounting Base
Modules Mounted on 1734-TOP or 1734-TOPS One-piece Terminal Base
DescriptionDescription
1Module locking mechanism5Interlocking side pieces
2Module wiring diagram6Slide-in writable label
3DIN rail locking screw (orange)7Handle
4Mechanical keying81734-TOP or 1734-TOPS one-piece
terminal base with screw or spring
clamp
Publication 1734-IN055F-EN-E - March 2012
POINT I/O 2 and 4 Relay Output Modules 9
Slide the mounting base until the
interlocking side pieces engage the
adjacent module or adapter.
31586
Mount the I/O Base
To mount the I/O base on the DIN rail, proceed as follows:
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.
Publication 1734-IN055F-EN-E - March 2012
10 POINT I/O 2 and 4 Relay Output Modules
Turn the keyswitch to align
the number with the notch.
Notch position 3 is shown.
Make sure the DIN rail
locking screw is in the
horizontal position.
1734-TB Base
45696
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 in reference to
the base.
1. Using a bladed screwdriver to 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 and press to secure.
The module locks into place.
Publication 1734-IN055F-EN-E - March 2012
Turn the keyswitch to align
the number with the notch.
Notch position 1 is shown.
Make sure the DIN-rail
locking screw is in the
horizontal position.
1734-TOP Base
45697
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.
POINT I/O 2 and 4 Relay Output Modules 11
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:
Publication 1734-IN055F-EN-E - March 2012
12 POINT I/O 2 and 4 Relay Output Modules
2
2
0
V
A
C
In
p
u
t
M
o
d
u
l
e
S
ta
tu
s
N
e
t
w
o
r
k
S
ta
t
u
s
N
OD
E
:
0
1
44011
Insert the module
straight down into
the mounting base
Hook the RTB end into
the mounting base end
and rotate until it locks
into place
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.
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.
Publication 1734-IN055F-EN-E - March 2012
POINT I/O 2 and 4 Relay Output Modules 13
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.
Communicate with Your 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 does not produce input data (scanner Rx). It consumes
1 Byte of I/O data (scanner Tx).
Default Data Map for 1734-OW2
Message size: 1 Byte
76543210
Consumes (scanner
Tx)
Where: 0 = Off, 1 = On
Default Data Map for 1734-OW4
Message size: 1 Byte
Consumes (scanner
Tx)
Where: 0 = Off, 1 = On
Not usedCh1Ch0Channel
76543210
Not used
Ch3 Ch2
Ch1Ch0Channel
state
state
Publication 1734-IN055F-EN-E - March 2012
14 POINT I/O 2 and 4 Relay Output Modules
Module status
Network status
Status of output 0
Status of output 1
C
V
C
V
C = Common
V = Supply
Output 0A
Output 0B
Output 1A
Output 1B
Status of output 2
Status of output 3
Output 0A
Output 0B
Output 1A
Output 1B
Output 2A
Output 2B
Output 3A
Output 3B
45183
45184
1734-OW2
1734-OW4
Wire the Module
NODE:
0
1
Module
Status
Network
Status
Relay
Output
1734
OW2
NODE:
0
1
2
3
Module
Status
Network
Status
Relay
Output
1734
OW4
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.
Relay contacts are not directly powered by the internal power bus. Load power from the
internal power bus is available for the 1734-OW2 only. Connect to pins 6 and 7 for
V supply, and to pins 4 and 5 for V common.
Publication 1734-IN055F-EN-E - March 2012
1734-OW2 – Load Powered by Internal Power Bus
Load
Load
Out = Output channel relay contacts
V = Supply (ranges from 5V DC…240V AC)
C = Common
Out 1A
Out 0A
1
0
Out 1BOut 0B
3
2
C
C
5
4
V
V
7
6
Out = Output channel
relay contacts
Out 1A
Out 0A
1
0
Out 1BOut 0B
3
2
Out 3A
Out 2A
5
4
Out 3B
Out 2B
7
6
Power
supply
Load
Power
supply
Load
Power
supply
Load
Power
supply
Load
1734-OW4 – Load Powered by External Power Bus
Load power must be provided by an external power source for the 1734-OW4. The
1734-OW4 cannot be powered from the internal power bus.
ChannelOutputChannelOutput
0A02A4
0B22B6
1A13A5
1B33B7
POINT I/O 2 and 4 Relay Output Modules 15
Publication 1734-IN055F-EN-E - March 2012
16 POINT I/O 2 and 4 Relay Output Modules
01
23
45
67
01
23
45
67
01
23
45
67
120V AC
PDN
OW2
OW2
45186
ATTENTION: The power supply voltage may be daisychained from a 1734
adapter, 1734-FPD or 1734-EP24DC communication interface. Each channel is
individually isolated and may have a unique supply and/or voltage as necessary.
ATTENTION: Do not attempt to increase load current or wattage capability
beyond the maximum rating by connecting two or more outputs in parallel. The
slightest variation in relay switching time may cause one relay to momentarily
switch the total load current.
ATTENTION: Make sure that all relay wiring is properly connected before
applying any power to the module.
ATTENTION: Total current draw through the wiring base unit is limited to 10 A.
Separate power connections to the terminal base unit may be necessary.
ATTENTION: Use the end cap from your adapter or interface module to cover
the exposed interconnections on the last mounting base on the DIN rail. Failure
to do so could result in equipment damage or injury from electric shock.
Wire with AC Modules
Publication 1734-IN055F-EN-E - March 2012
POINT I/O 2 and 4 Relay Output Modules 17
PDN
IB2
IB4
IV2
IV4
FPD
OW2
AC
power
bus
C
V
L2/N
L1
45187
OW2
OW2
PDN
IB2
IV2
IB4
IV4
OW2
OW2
OW2
24V
L2/N
L1
120V AC/240V AC
45726
Wire Using a 1734-FPD
01
01
01
01
01
01
01
01
01
23
23
23
23
23
23
23
23
23
45
45
45
45
45
45
45
45
45
67
67
67
67
67
67
67
67
67
Wire Using External Power Source for AC Relay Power
01 01 01 01 0101 0101
2323232323232323
4545454545454545
6767676767676767
Publication 1734-IN055F-EN-E - March 2012
18 POINT I/O 2 and 4 Relay Output Modules
Module status
Network status
Status of output 0
Status of output 1
Status of output 2
Status of output 3
45183
45184
1734-OW21734-OW4
Interpret Status Indicators
Refer to the following diagram and table for information on how to interpret the
status indicators.
0
1
Module
Status
Network
Status
NODE:
Output
1734
Relay
OW2
NODE:
0
1
2
3
Module
Status
Network
Status
Relay
Output
1734
OW4
Indicator Status for Modules
StatusDescription
Module
status
OffNo power applied to device.
GreenDevice operating normally.
Flashing greenDevice needs commissioning due to missing, incomplete,
(checksum failure or ramtest failure at cycle power).
Flashing
red/green
Firmware fatal error present.
Device is in self-test mode.
Publication 1734-IN055F-EN-E - March 2012
POINT I/O 2 and 4 Relay Output Modules 19
Indicator Status for Modules
StatusDescription
Network
status
I/O statusOffOutputs off.
OffDevice is not online:
Flashing greenDevice is online but has no connections in the established
GreenDevice is online and has connections in the established
Flashing redOne or more I/O connections are in timed-out state.
RedCritical link failure – failed communication device. Device
Flashing
red/green
YellowOutputs on.
- Device has not completed dup_MAC-id test.
- Device not powered – check module status indicator.
state.
state.
detected error that prevents it from communicating on the
network.
Communication faulted device – the device has detected a
network access error and is in communication faulted
state. Device has received and accepted an Identity
Communication Faulted Request – long protocol message.
Publication 1734-IN055F-EN-E - March 2012
20 POINT I/O 2 and 4 Relay Output Modules
Specifications
General Specifications
AttributeValue
Outputs per module1734-OW2 – 2 Form A isolated (normally open)
Off-state leakage current, max 1.2 A @ 240V AC, and bleed resistor through
Terminal base screw torqueDetermined by installed terminal block
Power consumption0.8 W
Power dissipation, max0.5 W
Backplane power5V DC, 80 mA
Contact rating5…30V DC @ 2.0 A resistive
Isolation voltage250V (continuous), Basic Insulation Type
Switching frequency, max1 operation/3 s (0.3 Hz @ rated load)
Expected life of
electrical contacts, min
Wiring category
(1)
Wire size0.25…2.5 mm
Enclosure type ratingNone (open-style)
Pilot duty ratingR150
North American temp codeT4A
IEC temp codeT4
(1)
Use this conductor category information for planning conductor routing as described in Industrial Automation Wiring
and Grounding Guidelines, publication 1770-4.1
electromechanical relays
1734-OW4 – 4 Form A isolated (normally open)
electromechanical relays
snubber circuit
120V AC @ 2.0 A resistive
240V AC @ 2.0 A resistive
1800 VA make, 180 VA break
Type tested @ 2550V DC for 60 s, field-side to system, and
between contact sets
100,000 operations @ rated load
1 – on signal ports
2
(22…14 AWG) solid or stranded copper
wire rated at 75 °C (167 ° F), or greater, 1.2 mm (3/64 in.)
insulation max
c-UL-usUL Listed Industrial Control Equipment, certified for US and
Canada. See 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
CEEuropean Union 2004/108/EC EMC Directive, compliant with:
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 & B)
ExEuropean Union 94/9/EC ATEX Directive, compliant with:
EN 60079-15; Potentially Explosive Atmospheres, Protection "n"
EN 60079-0; General Requirements
II 3 G Ex nC IIC T4
when used at or below 60V AC or 75V DC
KCKorean Registration of Broadcasting and Communications
Equipment, compliant with:
Article 58-2 of Radio Waves Act, Clause 3
(1)
See the Product Certification lin k at http://www.ab.com for Declaration of Conformity, Certificates, and other
certification details.
Publication 1734-IN055F-EN-E - March 2012
POINT I/O 2 and 4 Relay Output Modules 23
Publication 1734-IN055F-EN-E - March 2012
Rockwell Automation Support
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.
Documentation Feedback
Your comments will help us serve your documentation needs better. If you have any suggestions on how to
improve this document, complete this form, publication RA-DU002
http://www.rockwellautomation.com/literature/
.
, available at
Allen-Bradley, Rockwell Automation, ArmorBlock, and TechConnect are trademarks of Rockwell Automation, Inc.
Trademarks not belonging to Rockwell Automation are property of their respective companies.