Allen-Bradley POINT I/O 1734-IE2C User manual

POINT I/O is a trademark of Rockwell Automation1
DeviceNet is a trademark of ODVA, Inc. Publication 1734-IN053C-EN-P - April 2002
Installation Instructions
POINT I/O 2 Input Analog Module
(Cat. No. 1734-IE2C 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 Locking Screw (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.
Module
Status
Network
Status
NODE:
0
1
2
3
2
3
4
5
1
7
6
8
9
10

2POINT I/O 2 Input Analog Module
Publication 1734-IN053C-EN-P - April 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 2 Input Analog Module 3
Publication 1734-IN053C-EN-P - April 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 2 Input Analog Module
Publication 1734-IN053C-EN-P - April 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 2 Input Analog Module 5
Publication 1734-IN053C-EN-P - April 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 2 Input Analog Module
Publication 1734-IN053C-EN-P - April 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
mountingbase 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 2 Input Analog Module 7
Publication 1734-IN053C-EN-P - April 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 2 Input Analog Module
Publication 1734-IN053C-EN-P - April 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 2 Input Analog Module 9
Publication 1734-IN053C-EN-P - April 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 input module produces 6 bytes of input data
(scanner Rx) and fault status data. It does not consume I/O data (scanner
Tx).
Default Data Map for the 1734-IE2C Analog Input Module
Message size: 6 Bytes
15 14 13 12 11 10 09 08 07 06 05 04 03 02 01 00
Produces
(scanner Rx)
Input Channel 0 High Byte Input Channel 0 Low Byte
Input Channel 1 High Byte Input Channel 1 Low Byte
Status Byte for Channel 1 Status Byte for Channel 0
O
R
U
R
H
H
A
LL
A
H
A
L
A
C
M
C
F
O
R
U
R
H
H
A
LL
A
H
A
L
A
C
M
C
F
Consumes
(scanner Tx)
No consumed data
Where: CF = Channel Fault status; 0 = no error, 1 = fault
CM = Calibration Mode; 0 = normal, 1 = calibration mode
LA = Low Alarm; 0 = no error, 1 = fault
HA = High Alarm; 0 = no error, 1 = fault
LLA = Low/Low Alarm: 0 = no error, 1 = fault
HHA = High/High Alarm; 0 = no error, 1 = fault
UN = Underrange; 0 = no error, 1 = fault
OR = Overrange; 0 = no error, 1 = fault

10 POINT I/O 2 Input Analog Module
Publication 1734-IN053C-EN-P - April 2002
Wiring the Input Analog Module
Wiring Diagram
Channel Current
Input
Common Chassis Ground Voltage
004 2 6
115 3 7
12/24V dc is provided by the internal power bus.
41974
Module Status
Network Status
Status of Input 0
Status of Input 1
Input 0 Connection
Chas Gnd
C
V
Input 1 Connection
Chas Gnd
C
V
Chas Gnd = Chassis ground
C = Common
V = Supply
4-20mA
Analog
Input
Module
Status
Network
Status
1734
IE2C
NODE:
0
1
In 0 In 1
Chas
Gnd
Chas
Gnd
CC
V
V
Current
Input
Device
2-wire
In = Input channel
Chas Gnd = Chassis Ground
C = Common
V = 12/24V dc supply 42018in
3
5
7
01
2
4
6
Current
Input
Device
4-wire
ac or dc