Allen-Bradley 1734-8CFG User manual

5Publication 1734-SG001F-EN-P - September 2015
Chapter 1
POINT I/O Family
Overview
The POINT I/O family has modular I/O modules that are ideal for
applications where flexibility and low-cost of ownership are key for successful
control system design and operation. As a key element in the Rockwell
Automation Integrated Architecture, its comprehensive diagnostics and
configurable features allow the product to be easily applied to any automation
system and reduce engineering costs through standardization. It can be used in
remote device panels, local control panels, and can be accessed from many
locations including the Internet. This product has just-what-you-need
granularity in 1 to 8 points to reduce system cost and size.
Available features include Channel Level Diagnostics for quick
troubleshooting, multiple termination options and flexibility to save money,
cabinet space and commissioning/troubleshooting time, the ability to
mix/match Safety I/O on the same bus, and available DeviceLogix for local
control, fast response time. Self-Configuring modules are also available to
reduce/simplify your design and your inventory.

Publication 1734-SG001F-EN-P - September 2015
6POINT I/O Family
The POINT I/O System
The base (A) mounts onto the DIN rail and provides the backplane. The POINT I/O module (B) snaps into
the base. The removable terminal block (C) also snaps into the base and provides the wiring and
terminations for field-side connections, as well as system power for the backplane.
POINT I/O has 4 major components:
•I/O modules provide the field interface and system-interface circuitry
•Communication interface modules provide the network-interface
circuitry
•Terminal base units provide the wiring and signal termination for
field-side connections and system power for the backplane
•Power distribution modules provide the expandability of the POINT
I/O system and the flexibility to mix a variety of signal types
1734 POINT I/O modules offer 1 to 8 points per module. The I/O modules
are interfaced to a network through a communication interface, which includes
a built-in power supply that converts incoming 24V DC power to 5V DC
backplane power. Each type of communication interface (Network Adaptor)
supports a maximum of 13 to 17 I/O modules, with a maximum of 10 A field
power. The I/O modules receive power from the power supply through the
backplane. With an external power supply, you can expand a POINT I/O
assembly up to a maximum of 63 I/O modules or 504 channels.
A
B
C
A
B
45215 45216
1734-TOP or 1734-TOPS
One-piece Terminal Base with Screw or Spring Clamp

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POINT I/O Family 7
POINT I/O Features
Adapters • ControlNet
• DeviceNet
• EtherNet I/P
• Profibus
I/O Types • Digital
• Analog
•AC/DC
• Thermocouple
•RTD
• Specialty
Module Density 1…8 points
Specialty Modules • Encoder
• 1 MHz Counter In
• Counter In with Outputs
• Serial RS232
• RS485
• RS422
• Channel Isolated Thermocouple
•RTD
• Serial Synchronous Interface (SSI)
• Address Reserve
• 4 Channel IO-Link Master
Module Features • Channel-level diagnostics (LED indicator and electronic)
• Channel-level alarm and annunciation (electronic)
• Channel-level open-wire detection with electronic feedback
• Channel-level short-circuit detection with electronic feedback
• Parameter-level explicit messaging
• Removal and insertion under power (RIUP)
• Horizontal or vertical mounting without derating
• Automatic Device Replacement
• Add-On-Profiles in RSLogix 5000
Network
Connectivity • DeviceNet (including SubNet connectivity)
• ControlNet (Logix controller only)
• EtherNet/IP (Logix controller only)
• PROFIBUS DP
• OPC/DDE Data Monitoring¨
Environmental
Style Class I, Division 2/Zone 2, Marine Certification, European ATEX Zone 2 3G
Modules per Node,
max Up to 63

Publication 1734-SG001F-EN-P - September 2015
8POINT I/O Family
Specify a POINT I/O System Follow these steps as you specify your POINT I/O system:
Step Remember to select
1 Select a communication
interface
Choose the interface module for your
operating system.
•the appropriate interface module
•a communication interface that
meets the power requirements of
your system
2 Select I/O devices based on
field devices
•location of the device
•number of points needed
•appropriate catalog number
•number of points available per
module
•number of modules
•I/O modules – some have diagnostic
features, electronic fusing, isolated
inputs/outputs, and unique
configurable features
3 Select a wiring base assembly
Choose the appropriate wiring base
assembly
•the appropriate wiring base
assembly:
Single piece screw, single piece
spring, or RTB (Removable Terminal
Base)
4 Select optional power
components
Choose optional components to
extend backplane power or change
the field power distribution source.
•additional power components as
necessary
•adequate power capacity to meet
I/O module backplane current
requirements
5 Determine mounting
requirements
Determine needed dimensions based
on the communication interface
chosen.
•the appropriate number of DIN rails
based on the number of modules and
the physical locations of those
modules
•horizontal or vertical mounting with
no thermal derating

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24 Select POINT I/O Modules
Digital I/O Modules Environmental Specifications
Self-Configurable Modules
1734 Digital I/O Modules Environmental Specifications
Attribute Value
Operating temperature -20…55 °C (-4…131 °F)
Nonoperating temperature -40…85 °C (-40…185 °F)
Relative humidity 5…95% noncondensing
Operating shock 30 g
Nonoperating shock 50 g
Vibration 5 g at 10…500 Hz
Enclosure type rating None (open-style)
Mounting type DIN-rail
Certifications (when product is marked) CE, C-Tick, c-UL-us
1734 DC Configurable Input/Output Modules Technical Specifications
1734-8CFG 1734-8CFGDLX (with
DeviceLogix
Number of inputs/iutputs 8 8
Voltage, on-state input, nom
Voltage, on-state input, min 11V DC
Voltage, on-state input, max
Current, on-state input, min 2.0 mA
Current, on-state input, max 5.0 mA
Input filter Each input independently settable in 1 ms intervals
(truncated to 1 ms resolution). Default value is 1000 ms.
Voltage, on-state output, nom 24V DC
Voltage, on-state output, min 10V DC
Voltage, on-state output, max 28.8V DC
POINTBus current 100 mA @ 5V DC
Power dissipation, max 2.6 W @ 28.8V DC
Thermal dissipation, max 8.9 BTU/hr @ 28.8V DC
Terminal base unit 1734-TB, 1734-TBS, 1734-TOP, or 1734-TOPS

Publication 1734-SG001F-EN-P - September 2015
Select POINT I/O Modules 25
Self-Configurable Modules Environmental Specifications
1734 DC Configurable Input/Output Modules Environmental Specifications
Attribute Value
Operating temperature -20…55 °C (-4…131 °F)
Nonoperating temperature -40…85 °C (-40…185 °F)
Relative humidity 5…95% noncondensing
Operating shock 30 g
Nonoperating shock 50 g
Vibration 5 g at 10…500 Hz
Enclosure type rating None (open-style)
Mounting type DIN-rail
Certifications (when product is marked) CE, C-Tick

63Publication 1734-SG001F-EN-P - September 2015
Chapter 6
Mounting Requirements
The producer/consumer model multicasts messages. This means that multiple
nodes can consume the same data at the same time from a single device.
Where you place POINT I/O modules in the control system determines how
the modules exchange data.
For a Rockwell Automation controller to control 1734 I/O, the I/O must be
on one of the following:
•the same network as the controller.
•a ControlNet network that is local to that controller.
•an EtherNet/IP network that is local to that controller.
Power Supply Distance
Rating
Place modules to the right of the power supply. Each 1734 I/O module can be
placed in any of the slots right of the power supply until the usable backplane
current of that supply has been exhausted. An adapter provides 1000 mA
current to the POINTBus backplane. The 1734-EP24DC or 1734-EPAC
Expansion power supply provides up to 1300 mA. I/O modules require from
75 mA (typical for the digital and analog I/O modules) up to 220 mA or more.
Step 5 - Select:
•appropriate number of DIN rails based on the number of modules
and the physical requirements
Power Supply Distance Rating ................................................... page 63
Mount the POINT I/O System................................................. page 64

Publication 1734-SG001F-EN-P - September 2015
64 Mounting Requirements
Use the following table to plan the maximum size layout of your POINT I/O
system.
Mount the POINT I/O
System
Mount the POINT I/O system on a DIN rail in the horizontal or vertical
orientation. Use steel, 35 x 75.5 mm DIN rails (Cat. No. 199-DR1; 46277-3;
EN 50022). The DIN rails for all POINT I/O system components must be
mounted on a common, conductive surface to ensure proper electro-magnetic
interference (EMI) performance. Secure DIN rail approximately every
200 mm (7.87 in).
Maximum Size Layout
POINTBus current No. of I/O Modules
with 24V DC
Backplane Current
(@ 75 mA each), max
No. of I/O Modules
with Expansion
Power Supplies,
max
No. of I/O Module
Connections, max
1734-PDN on
DeviceNet network 1300 mA Up to 17 Expansion power supply not allowed Not to exceed scanner capacity
1734-ADN(X) on
DeviceNet network 1000 mA Up to 13 63 Not to exceed scanner capacity
1734-ACNR on
ControlNet network 1000 mA Up to 13 63 5 rack and 25 direct
1734-AENT on
EtherNet/IP network 1000 mA Up to 13 63 31 total connections (reduced to 20 with
safety connections
present) including
5 rack/enhanced rack
1734-APB on
PROFIBUS network 1000 mA Up to 13 63 Not to exceed scanner capacity
1734-EP24DC
Expansion Power Horizontal mounting: 1000 mA @ 5V DC for 10…19.2V
1300 mA @ 5V DC for 19.2…28.8V
Up to 17 63 Not to exceed scanner
capacity
Vertical mounting:
1000 mA @ 5V DC for 10…28.8V Up to 17 63 Not to exceed scanner capacity
1734-EPAC
Expansion Power Horizontal mounting: 1300 mA@ 5.2V DC Up to 17 63 Not to exceed scanner capacity
Vertical mounting:
1000 MA @ 5.2V DC Up to 17 63 Not to exceed scanner capacity

Publication 1734-SG001F-EN-P - September 2015
Mounting Requirements 65
Approximate Mounting Dimensions
POINT I/O with 1734-PDN Mounting Dimensions
IMPORTANT
When mounting the 1734-IB8S, 1734-OB8S, and 1734-IE4S
modules, ensure that there is 2 in. of clearance space above the
POINT rail.
Allow a 25.4 mm (1.0 in)
air gap all around
133.4 mm
(5.25 in)
1734-PDN (H x W x L)
7.62 x 25.4 x 133.4 mm
(3.00 x 1.00 x 5.25 in)
1734-FDN (H x W x L)
7.62 x 25.4 x 133.4 mm
(3.00 x 1.00 x 5.25 in)
1734-TB or 1734-TBS with I/O (H x W x L)
65 x 12 x 133.4 mm
(2.56 x 0.47 x 5.25 in)

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66 Mounting Requirements
POINT I/O with 1734-ADN(X), 1734-ACNR, 1734-AENT, 1734-APB Mounting
Dimensions
133.4 mm
(5.25 in)
1734-ADN (H x W x L)
7.62 x 54.9 x 133.4 mm
(3.00 x 2.16 x 5.25 in)
Allow a 25.4 mm (1.0 in)
air gap all around
1734-EP24DC or 1734-FPD (H x W x L)
7.62 x 25.4 x 133.4 mm
(3.00 x 1.00 x 5.25 in)
1734-TB or 1734-TBS with I/O (H x W x L)
65 x 12 x 133.4 mm
(2.56 x 0.47 x 5.25 in)
IMPORTANT
When mounting the 1734-IB8S, 1734-OB8S, and 1734-IE4S
modules, ensure that there is 2 in. of clearance space above the
POINT rail.

Publication 1734-SG001F-EN-P - September 2015
Related Documentation 69
Bases 1734-TB,
1734-TBS Wiring Base Assembly with 8 Point Cage-Clamp Removable Terminal Block Installation Instructions, publication 1734-IN511
1734-TBS,
1734-TB3S,
1734-RTBS,
1734-RTB3S
Wiring Base Assembly with 12 Point Cage-Clamp Removable Terminal Block Installation
Instructions, publication 1734-IN013
1734-TOP,
1734-TOPS,
1734-TOP3,
1734-TOP3S
POINT I/O One-piece Terminal Bases Installation Instructions, publication 1734-IN028
1734-TBCJC Cold Junction Compensation Wiring Base Assembly Installation Instructions,
publication 1734-IN583
Power Units 1734-FPD Field Potential Distributor Module Installation Instructions, publication 1734-IN059
1734-EP24DC 24V DC Expansion Power Supply Installation Instructions, publication 1734-IN058
1734-EPAC 120/240V AC Expansion Power Supply Installation Instructions, publication 1734-IN017
Safety 1734-IB8S,
1734-OB8S,
1734-IE4S
POINT Guard I/O Safety Modules Installation and User Manual, publication 1734-UM013
Cat. No. Description