AB Quality 1734-OW2 User manual

POINT I/O is a trademark of Rockwell Automation1
DeviceNet is a trademark of ODVA, Inc. Publication 1734-IN055D-EN-P - April 2004
Installation Instructions
POINT I/O 2 or 4 Relay Output Module
(Cat. No. 1734-OW2 and 1734-OW4, Series C)
Description Description
1Mounting Base16RTB Removal Handle
2Mechanical Keying (orange) 7Removable Terminal Block (RTB)1
3Module Wiring Diagram 8DIN Rail Locking Screw (orange)
4Module Locking Mechanism 9Slide-in Writable Label
5Insertable I/O Module 10 Interlocking Side Pieces
1Wiring Base Assembly consists of item 1) mounting base, 1734-MB and item 7) removable
terminal block, 1734-RTB or -RTBS.
Module
Status
Network
Status
NODE:
0
1
2
3
2
3
4
5
1
7
6
8
9
10

2POINT I/O 2 or 4 Relay Output Module
Publication 1734-IN055D-EN-P - April 2004
This Series C product can be used with DeviceNet and PROFIBUS
adapters. It can be used with ControlNet and Ethernet adapters using
RSLogix 5000, version 11 (or higher) software.
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://www.ab.com/manuals/gi)
describes some 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 we use notes to make you aware of safety considerations.

POINT I/O 2 or 4 Relay Output Module 3
Publication 1734-IN055D-EN-P - April 2004
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
•recognize the consequence
IMPORTANT Identifies information that is critical for successful
application and understanding of the product.
Important User Information

4POINT I/O 2 or 4 Relay Output Module
Publication 1734-IN055D-EN-P - April 2004
ATTENTION Environment and Enclosure
This equipment is intended for use in a Pollution Degree 2
industrial environment, in overvoltage Category II applications
(as defined in IEC publication 60664-1), at altitudes up to 2000
meters without derating.
This equipment is considered Group 1, Class A industrial
equipment according to IEC/CISPR Publication 11. Without
appropriate precautions, there may be potential difficulties
ensuring electromagnetic compatibility in other environments
due to conducted as well as radiated disturbance.
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 enclosure. Also, see the
appropriate sections in this publication, as well as the
Allen-Bradley publication 1770-4.1 ("Industrial Automation
Wiring and Grounding Guidelines"), for additional installation
requirements pertaining to this equipment.
ATTENTION POINT I/O is grounded through the DIN rail to chassis
ground. 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.

POINT I/O 2 or 4 Relay Output Module 5
Publication 1734-IN055D-EN-P - April 2004
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.
ATTENTION 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, store the equipment in
appropriate static-safe packaging.

6POINT I/O 2 or 4 Relay Output Module
Publication 1734-IN055D-EN-P - April 2004
Installing the Mounting Base
To install the mounting 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 will snap 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.
Installing the I/O 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.
1. Using a bladed screwdriver, rotate the keyswitch (2) on the mounting
base clockwise until the number 7 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 will lock into place.
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 or 4 Relay Output Module 7
Publication 1734-IN055D-EN-P - April 2004
Installing the Removable Terminal Block (RTB)
A removable terminal block 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.
Removing 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.
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.

8POINT I/O 2 or 4 Relay Output Module
Publication 1734-IN055D-EN-P - April 2004
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. Then lift straight up to remove.
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 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 or 4 Relay Output Module 9
Publication 1734-IN055D-EN-P - April 2004
Communicating with Your Module
I/O messages are sent to (consumed) and received from (produced) the
POINT I/O modules. These messages are mapped into the processor’s
memory. This POINT I/O output module does not produce input data
(scanner Rx). It does consume 1 byte of I/O data (scanner Tx).
Default Data Map for the 1734-OW2 Input Module
Message size: 1 Byte
Default Data Map for the 1734-OW4 Input Module
Message size: 1 Byte
7 6 5 4 3 2 1 0
Consumes
(scanner Tx)
Not used Ch1 Ch0 Channel state
Where: 0 = Off, 1 = On
7 6 5 4 3 2 1 0
Consumes
(scanner Tx)
Not used Ch3 Ch2 Ch1 Ch0 Channel state
Where: 0 = Off, 1 = On

10 POINT I/O 2 or 4 Relay Output Module
Publication 1734-IN055D-EN-P - April 2004
Wiring the Relay Output Module
ATTENTION 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 4 and 5 for V common.)
Load power must be provided by an external power
source for the 1794-OW4. The 1734-OW4 module
cannot be powered from the internal power bus.
Relay
Output
Module
Status
Network
Status
1734
OW2
NODE:
0
1
41974
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
Relay
Output
Module
Status
Network
Status
1734
OW4
NODE:
0
1
2
3
1734-OW2 1734-OW4

POINT I/O 2 or 4 Relay Output Module 11
Publication 1734-IN055D-EN-P - April 2004
1734-OW2
Channel Output Common Supply
0A 0 4 6
0B 2 4 6
1A 1 5 7
1B 3 5 7
Supply voltage can range from +5V dc to 240V ac, depending on relay load.
12/24V dc power for the module is provided by the internal power bus.
CC
V
V
Out = Output channel relay contacts
V = Supply (can range from +5V dc to 240V ac)
C = Common
42018
Out 0A
Out 0B
Out 1A
Out 1B
Load
Load
0
2
4
6
3
5
7
1
Load powered by Internal Power Bus

12 POINT I/O 2 or 4 Relay Output Module
Publication 1734-IN055D-EN-P - April 2004
1734-OW2
Channel Output Common Supply1
0A 0
0B 2
1A 1
1B 3
1 Supply voltage can range from +5V dc to 240V ac, depending on relay load.
12/24V dc power for the module is provided by the external power supply.
CC
V
V
Out 0A
Out 0B
Out 1A
Out 1B
Load
Power
Supply
Out = Output channel relay contacts
Power Supply = can range from +5V dc to 240V ac
C = Common
Load powered by External Power
0
2
4
6
3
5
7
1
Power
Supply
Load

POINT I/O 2 or 4 Relay Output Module 13
Publication 1734-IN055D-EN-P - April 2004
1734-OW4
Channel Output Common Supply1
0A 0
0B 2
1A 1
1B 3
2A 4
2B 6
3A 5
3B 7
1 Supply voltage can range from +5V dc to 240V ac, depending on relay load.
12/24V dc power for the module is provided by the external power supply.
Note: 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.
Out 2A Out 3A
Out 3B
Out 2B
Out 0A
Out 0B
Out 1A
Out 1B Load
Power
Supply
Out = Output channel relay contacts
Load powered by External Power
0
2
4
6
3
5
7
1
Power
Supply
Load
Power
Supply
Load Load
Power
Supply

14 POINT I/O 2 or 4 Relay Output Module
Publication 1734-IN055D-EN-P - April 2004
ATTENTION •Do not attempt to increase load current or wattage
capability beyond the maximum rating by connecting 2
or more outputs in parallel. The slightest variation in
relay switching time may cause one relay to
momentarily switch the total load current.
•Make certain that all relay wiring is properly
connected before applying any power to the module.
•Total current draw through the wiring base unit is
limited to 10A. Separate power connections to the
terminal base unit may be necessary.
•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.
01 01010101 01010101
01 01 01
120V ac
PDN OW2OW2 PDN IB2 IB4IV2 IV4 FPD OW2 OW2 OW2
ac power
bus
CV L2/N L1
Wiring with ac
Modules only
Wiring Using a 1734-FPD to
Create a New ac Power Bus

POINT I/O 2 or 4 Relay Output Module 15
Publication 1734-IN055D-EN-P - April 2004
01 010101 01010101
24V L1
120V ac/240V ac
42010
L2/N
Wiring using external power source for ac Relay power
PDN IB2 IB4 IV2 IV4 OW2 OW2 OW2

16 POINT I/O 2 or 4 Relay Output Module
Publication 1734-IN055D-EN-P - April 2004
Troubleshooting with the Indicators
Module Status
Off No power applied to device
Green Device operating normally
Flashing Green Device needs commissioning due to
configuration missing, incomplete or incorrect.
Flashing Red Recoverable fault.
Red Unrecoverable fault may require device
replacement
Flashing Red/Green Device is in self-test
Indicator Indication Probable Cause
Network Status
Off Device is not on-line
- Device has not completed dup_MAC_id test.
- Device not powered - check module status
indicator
Flashing Green Device is on-line but has no connections in the
established state.
41974
Module Status
Network Status
Status of Output 0
Status of Output 1
Relay
Output
Module
Status
Network
Status
1734
OW2
NODE:
0
1
Status of Output 2
Status of Output 3
1734-OW2 1734-OW4
Relay
Output
Module
Status
Network
Status
1734
OW4
NODE:
0
1
2
3

POINT I/O 2 or 4 Relay Output Module 17
Publication 1734-IN055D-EN-P - April 2004
Green Device on-line and has connections in the
established state.
Flashing Red One or more I/O connections in timed-out state
Red Critical link failure - failed communication device.
Device detected error that prevents it
communicating on the network.
Flashing
Red/Green
Communication faulted device - the device has
detected a network access error and is in
communication faulted state. Device has received
and accepted an Identify Communication Faulted
Request - long protocol message.
Indicator Indication Probable Cause
I/O Status
Off Outputs off.
Yellow Outputs on.

18 POINT I/O 2 or 4 Relay Output Module
Publication 1734-IN055D-EN-P - April 2004
Safety Approvals
North American Hazardous Location Approval
The following modules are North American Hazardous Location approved:
1734-OW2 and 1734-OW4.
The following information applies when
operating this equipment in hazardous
locations:
Informations sur l’utilisation de cet équipement
en environnements dangereux:
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.
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.
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.
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
1, Division 2.
•S’assurer que l’environnement est
classé non dangereux avant de
changer les piles.
WARNING AVERTISSEMENT

POINT I/O 2 or 4 Relay Output Module 19
Publication 1734-IN055D-EN-P - April 2004
European Hazardous Location Approval
The following modules are European Zone 2 approved: 1734-OW2 and 1734-OW4.
European Zone 2 Certification (The following applies when the product
bears the EEx 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 potentially explosive atmospheres, given in Annex
II to this Directive. The examination and test results are recorded in
EC-type-examination certificate DEMKO 04 ATEX 0330347 X.
Compliance with the Essential Health and Safety Requirements has been assured by
compliance with EN 50021.
IMPORTANT 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 when applied in Class I, Zone 2 environments.
•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 shall be used within its specified ratings
defined by Allen-Bradley.
•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

20 POINT I/O 2 or 4 Relay Output Module
Publication 1734-IN055D-EN-P - April 2004
Specifications
Specifications - 1734-OW2 and -OW4 Output Relay Module
Outputs per Module 1734-OW2 - 2 Form A isolated (normally open)
electromechanical relays
1734-OW4 - 4 Form A isolated (normally open)
electromechanical relays
Off-State Leakage
Current (max at 240V ac)
1.2mA and bleed resistor thru snubber circuit
Output Voltage Range (load
dependent)
5-28.8V dc @ 2.0A resistive
48V dc @ 0.5A resistive
125V dc @ 0.25A resistive
125V ac @ 2.0A resistive
240V ac @ 2.0A resistive
Output Current Rating
(at rated power)
Resistive
2A @ 5-28.8V dc
0.5A @ 48V dc
0.25A @ 125V dc
2A @ 125V ac
2A @ 240V ac
Inductive
2.0A steady state @ 5-28.8V dc, L/R = 7ms
0.5A steady state @ 48V dc, L/R = 7ms
0.25A steady state @ 125V dc, L/R = 7ms
2.0A steady state, 15A make @ 125V ac,
PF = cos θ= 0.4
2.0A steady state, 15A make @ 240V ac,
PF = cos θ= 0.4
Power Rating
(steady state)
250W max. for 125V ac resistive output
480W max. for 240V ac resistive output
60W max. for 28.8V dc resistive output
24W max. for 48V dc resistive output
31W max. for 125V dc resistive output
250VA max. for 125V ac inductive output
480VA max. for 240V ac inductive output
60VA max. for 28.8V dc inductive output
24VA max. for 48V dc inductive output
31VA max. for 125V dc inductive output
Output Signal Delay
OFF to ON
ON to OFF
10ms maximum (time from valid output on signal to relay
energization by module)
26ms maximum (time from valid output off
signal to relay deenergization by module)
Initial Contact Resistance 30mΩ
Switching Frequency 1 operation/3s (0.3Hz at rated load) max
Operate/Release Time 10ms max
Bounce Time 1.2ms (mean)
Minimum Contact Load 100µA at 100mV dc