Allen-Bradley C Series User manual

POINT I/O is a trademark of Rockwell Automation
DeviceNet is a trademark of ODVA, Inc. Publication 1734-IN586B-EN-P - March 2002
Installation Instructions
POINT I/O Protected Output Module
(Cat. No. 1734-OB2EP Series C)
Description Description
1Mounting Base16 RTB Removal Handle
2 Mechanical Keying (orange) 7 Removable Terminal Block(RTB)1
3 Module Wiring Diagram 8 DIN Rail LockingScrew (orange)
4 Module Locking Mechanism 9 Slide-in Writable Label
5 Insertable 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-RT or-RTS.
24VDC
Protected
Output
Module
Status
Network
Status
NODE:
0
1
1734
OB2EP
2
3
4
5
1
7
6
8
9
10
41825OB2E

2POINT I/O Protected Output Module
Publication 1734-IN586B-EN-P - March 2002
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
Because of the variety of uses for the products described in this publication,
those responsible for the application and use of these products must satisfy
themselves that all necessary steps have been taken to assure that each
application and use meets all performance and safety requirements, including
any applicable laws, regulations, codes and standards. In no event will
Allen-Bradley be responsible or liable for indirect or consequential damage
resulting from the use or application of these products.
Any illustrations, charts, sample programs, and layout examples shown in this
publication are intended solely for purposes of example. Since there are many
variables and requirements associated with any particular installation,
Allen-Bradley does not assume responsibility or liability (to include intellectual
property liability) for actual use based upon the examples shown in this
publication.
Allen-Bradley publication SGI-1.1, Safety Guidelines for the Application,
Installation and Maintenance of Solid-State Control (available from your local
Allen-Bradley office), describes some important differences between
solid-state equipment and electromechanical devices that should be taken into
consideration when applying products such as those described in this
publication.
Reproduction of the contents of this copyrighted publication, in whole or part,
without written permission of Rockwell Automation, is prohibited.
Throughout this publication, notes may be used to make you aware of safety
considerations. The following annotations and their accompanying statements
help you to identify a potential hazard, avoid a potential hazard, and
recognize the consequences of a potential hazard:
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.

POINT I/O Protected Output Module 3
Publication 1734-IN586B-EN-P - March 2002
ATTENTION
!
Identifies information about practices or
circumstances that can lead to personal injury or
death, property damage, or economic loss.
IMPORTANT Identifies information that is critical for
successful application and understanding of the
product.

4POINT I/O Protected Output Module
Publication 1734-IN586B-EN-P - March 2002
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 Protected Output Module 5
Publication 1734-IN586B-EN-P - March 2002
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 Protected Output Module
Publication 1734-IN586B-EN-P - March 2002
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 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.)
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 Protected Output Module 7
Publication 1734-IN586B-EN-P - March 2002
3. Insert the module straight down into the mounting base and
press to secure. The module will lock into place.
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.
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 Protected Output Module
Publication 1734-IN586B-EN-P - March 2002
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.
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 Protected Output Module 9
Publication 1734-IN586B-EN-P - March 2002
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 produces 1 byte
of input data (scanner Rx) (status). It consumes 1 byte of I/O data
(scanner Tx).
Default Data Map for the 1734-OB2EP Output Module
Message size: 1 Byte
Message size: 1 Byte
76543 2 1 0
Produces
(scanner Rx) Not used Ch1 Ch0 Channel status
Where: 0 = no error, 1 = error
76543 2 1 0
Consumes
(scanner Tx) Not used Ch1 Ch0 Channel state
Where: 0 = Off, 1 = On

10 POINT I/O Protected Output Module
Publication 1734-IN586B-EN-P - March 2002
Wiring the Protected Output Modules
dc Protected Output Module Cat. No. 1734-OB2EP
Output Terminal Common Terminal Power
Channel 0 0, 2 4 6
Channel 1 1, 3 5 7
Module poweris supplied from the internal powerbus.
Protected
Sourcing
Output
Module
Status
Network
Status
1734
OB2EP
NODE:
0
1
42016
Module Status
Network Status
Status of Output 0
Status of Output 1
Output 0
Connection
Output 0
Connection
Output 1
Connection
Output 1
Connection
C
C
V
V
C = Common
V = Supply
Out 0 Out 1
Out 1
Out 0
CC
V
V
Load Load
42014
V = 12/24V dc, C = Common
Field power is supplied from internal power bus
1734-OB2EP 0
2
6
4
3
5
7
1