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Allen Bradley - PLC

Point I/O 1734

The 1734 POINT I/O family by Allen-Bradley / Rockwell Automation provides flexible and low-cost modular I/O devices used in a variety of applications, such as remote and local device control panels. The 1734 POINT I/O modules primarily consist of terminal base units for wiring, signal terminations, backplane power, and power distribution modules for expandability options, among other things. Each module is equipped with 1 to 8 points and supports several I/O types, such as digital, analog, AC/DC, thermocouple, RTD, and specialty I/Os. These modules are powered via an external power supply through the backplane and can be expanded to include up to 63 I/O modules or 504 channels. They have a built-in power supply for 24 to 5 VDC input conversion for the network adapters. The network adapters support 13 to 17 I/O modules, with a maximum field power of 10 amperes. These modules support ControlNet, DeviceNet, EtherNet/IP, and Profibus adapters. POINT I/O modules can be DIN rail mounted, and they have the Class I, Division 2/ Zone 2 environmental specification. The 1734 POINT I/O products can be used in several applications, and they form an essential part of Allen-Bradley / Rockwell Automation’s integrated architecture. These products are standardized and easy to use and, therefore, reduce engineering costs. Additional features and benefits include multiple termination options, channel-level diagnostics that allow fast troubleshooting, and mix-and-match assembly of safety I/Os on a single bus. These features provide flexibility of operation and handling resulting in lower costs, space utilization, and reduced installation and troubleshooting time.

Collage of images depicting Point I/O 1734 units

POINT I/O 1734 Selection Guide

In industrial process controls, certain applications benefit from having field devices such as sensors and pushbuttons wired short distances to local I/O nodes, instead of wiring long distances back to a central PLC.  These distributed I/O nodes serve as the interface between individual field devices and the separate control network (usually running Ethernet/IP or ControlNet protocols) and provide the benefits of reduced installation cost, fewer full PLC racks, and improved diagnostic features positioned near the field devices.  Several automation manufacturers offer these types of distributed I/O products, though Rockwell Automation’s POINT I/O family stands out from the crowd as a premier solution for both small and large applications.  Read on for an in-depth look at the POINT I/O modular wiring hardware family, its features, and its role within Rockwell’s Integrated Architecture ecosystem.

POINT I/O Family Overview

The complexities of modern process control can seem to extend in every direction - not just in terms of the processes being controlled, but in the constantly evolving technologies that provide this control, to begin with.  Rockwell Automation’s approach to simplifying control solutions is their Integrated Architecture methodology, which they describe as a ‘production control and information system allowed by fully-integrated control, network, visualization, and information technologies’.  The best way that we can plainly translate this description is to say that Rockwell’s Integrated Architecture is the umbrella of controllers, operator interfaces, industrial computers, network media, motor & motion control devices, I/O devices, safety devices, visualization tools, and distributed control systems that all share a programming environment. This entire ecosystem is completely cross-compatible, based on a common network technology across all hardware, applications, and process operations, plant-wide. 

As a member of the Integrated Architecture portfolio, Rockwell Automation / Allen-Bradley’s Bulletin ##1734 POINT I/O is a family of modular I/O connectivity hardware that serves the purpose of wiring in field devices to an Integrated Architecture system.  This might be a single machine with a PLC and POINT I/O rack in the same cabinet, or all the way up to multiple PLCs and multiple POINT I/O racks spread across a large plant with interconnecting Ethernet/IP communication.

Beyond simply offering a distributed wiring solution for field devices, POINT I/O has a variety of additional features intended to standardize and speed up deployment, reduce engineering costs, and improve system reliability.  We’ll dive into these benefits in the next section.

POINT I/O System Features

Rockwell Automation’s POINT I/O family is marketed under the following key benefits:

  • Flexibility
    • Connectivity to ControlNet, DeviceNet, Ethernet/IP, and other open networks
    • Linear, star, and ring Ethernet/IP network topology
    • Supports IO-Link Technology
    • Individual, rack, and assembly-level connections
    • Horizontal or vertical mounting without derating
    • Safe and Standard I/O in the same chassis
  • Cost savings
    • Modular design requires less enclosure space
    • Up to 504 channels on a single network interface
    • Removable terminations accelerate commissioning
    • Remove and Insert Under Power (RIUP) reduces maintenance time
    • Local autonomous control
  • Ease of use
    • Fast, simple configuration and integration
    • Channel-level diagnostics
  • Faster performance
    • Multiple connection types
    • Sense-to-actuate time of less than 2 milliseconds

The above benefits are certainly impressive for I/O connectivity hardware, but does the family offer enough I/O choices to make an investment in POINT I/O worthwhile?  We argue, yes - POINT I/O modules span practically all I/O types needed on a process control project, including:

  • Bulletin ##1734 digital I/O modules
  • Bulletin ##1734 analog I/O modules
  • Bulletin ##1734 specialty I/O modules
  • Bulletin ##1734 wiring systems
  • Bulletin ##1734 network communication adapters
  • Bulletin ##1734 POINT Guard I/O Safety modules

Pulling additional features from the wider Integrated Architecture ecosystem, POINT I/O also provides comprehensive channel-level diagnostics such as wire-off and short circuit detection, as well as configurable features such as user-settable filters and alarms. 

Point I/O is the only IP20-rated modular I/O solution complaint with ODVA requirements for linear, star, and ring Ethernet/IP architectures, providing greater system reliability and availability.  (See below for more on ring network options).    

Lastly, POINT I/O offers an IO-Link Master module, allowing up to (4) IO-Link devices to be connected to each POINT I/O rack.  IO-Link is the first technology used for direct connection to sensors and actuators to be adopted as an IEC 61131-9 standard.

Key POINT I/O Selection Details

The POINT I/O system has four major components, as described in Rockwell’s POINT I/O Module Selection Guide, document number 1734-SG001G-EN-P, dated September 2019:

  • 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

Looking further, POINT I/O modules offer between 1 and 8 points each, of which we can have between 13 to 17 I/O modules per communication interface (network adaptor). Modules pull power from the communication interface via the backplane, for a max of 10A field power draw per rack.  Alternatively, using an optional external power supply, these counts can be expanded to a maximum of 63 I/O modules or 504 channels. Modules are available as either Removable Terminal Designs or one-piece Terminal Bases / Spring Clamp designs.

Network adaptors are available in multiple Open Network Architecture protocols, including ControlNet, DeviceNet, Ethernet/IP, and Profibus.  Each of these protocols uses the Common Industrial Protocol (CIP), sharing a common language and universal set of communication services – a namesake feature of Rockwell’s Integrated Architecture approach.  A unique feature of POINT I/O is its ability to mix Standard and Safety-Rated I/O types in the same rack, each with its respective configuration, monitoring, and diagnostic services fully available.

  • The Ethernet/IP network is an open industrial-networking standard that supports implicit and explicit messaging and uses commercial, off-the-shelf Ethernet equipment, and physical media.
  • The ControlNet network allows intelligent, high-speed control devices to share the information required for supervisory control, work-cell coordination, operator interface, remote device configuration, programming, and troubleshooting.
  • The DeviceNet network offers low-cost, high-speed access to plant-floor data from a broad range of plant-floor devices and a significant reduction in wiring.

To help envision how POINT I/O is installed in a network, we can see in the below graphic that a POINT I/O rack is connected via Ethernet/IP (or any of the other protocols) away from our PLC/PAC racks. POINT I/O must always be installed in a cabinet, but it is equally useful to install POINT I/O in the PLC cabinet for centralized wiring as it is to install in a remote cabinet for wiring close to field devices.

To speak a little further about the available ring network topology, POINT I/O fully supports Device Level Ring (DLR) configuration. DLR is an Ethernet/IP protocol that is defined by the Open DeviceNet Vendors Association (ODVA), which provides a means to detect, manage, and recover from single faults in ring-based networks.  Ring networks are advanced configurations that land two Ethernet cables on a given control device, creating two paths for data transfer that help insulate against the failure of a single node in the network (which is an inherent risk in single-branch network topologies commonly selected due to lower costs).

Complete Selection

Sometimes, seeing the complete breadth of options in a hardware family is the only way to absorb the true capabilities and benefits available with that technology.  We’ll close out our article by posting the full list of POINT I/O modules and accessories below. Note a few available options that might surprise you in an I/O rack-only platform, including:

  • Under Specialty Products, the ‘VHSC’ modules are ‘Very High-Speed Counters’, rated up to 500kHz
  • 220VAC rated relay inputs and outputs
  • Self-Configuring Discrete I/O
  • Cold-Junction Compensation modules for use with thermocouples
  • Address Reserve Modules (1734-ARM) for reserving addresses and slot numbers, maintaining numbering schemes when replacing or spacing out signal modules

The full list of POINT I/O modules and accessories may be seen below.

  • Adapter Products
    • 1734-AENT, 1734-AENTR, 1734-ACNR, 1734-ADN, 1734-ADNX, 1734-APB
  • Digital Output Products
    • 1734-OB8, 1734-OB8E, 1734-OB4, 1734-OB4E, 1734-OB2, 1734-OB2E, 1734-OB2EP, 1734-OV8E, 1734-OV4E, 1734-OV2E
  • Self-Configuring I/O Products
    • 1734-8CFG, 1734-8CFGDLX
  • Digital Input Products
    • 1734-IB8, 1734-IB4, 1734-IB4D, 1734-IB2, 1734-IV8, 1734-IV4, 1734-IV2
  • Analog Products
    • 1734-IE2C, 1734-IE4C, 1734-IE8C, 1734-IE2V, 1734-OE2C, 1734-OE2V, 1734-OE4C, 1734-IR2, 1734-IR2E, 1734-IT2I
  • AC and Relay Products
    • 1734-OW2, 1734-OW4, 1734-OX2, 1734-IA2, 1734-IA4, 1734-IM2, 1734-IM4, 1734-OA2, 1734-OA4
  • Specialty Products
    • 1734-4IOL, 1734-232ASC, 1734-485ASC, 1734-VHSC24, 1734-VHSC5, 1734-IK, 1734-IJ, 1734-SSI, 1734-ARM, 1734-CTM, 1734-VTM
  • Power Supply Products
    • 1734-EP24DC, 1734-EPAC, 1734-FPD, 1734-PDN
  • Terminal Bases and Accessories
    • 1734-TB, 1734-TBS, 1734-TB3, 1734-TB3S, 1734-TBCJC, 1734-TOP, 1734-TOPS, 1734-TOP3, 1734-TOP3S, 1734-EXT1, 1734-EXT3

Browse our selection of Point I/O 1734 units

AutomationStop.com's online catalog offers one of the largest selections of preowned Point I/O 1734 units in the world.

1734-232ASC

Catalog number 1734-232ASC is a POINT I/O RS-232 ASCII module manufactured by Allen Bradley. This unit has one full-duplex input. It requires an external DC power supply voltage of 24 volts DC (nominal) to operate, in addition to an external DC power supply voltage range of 10 to 28.8 volts DC. The POINTBus current of the 1734-232ASC is rated as 75 milliamperes maximum at 5 volts DC. The approximate weight of this module is 28 grams, and the dimensions measure approximately 56 mm x 12 mm x 75.5 mm.

1734-485ASC

The 1734-485ASC ASCII module is a product of Allen Bradley and belongs to the POINT I/O product line. The 1734-485ASC connects to the RS-485 network, as well as the RS-422 network. This module has one (1) full-duplex input. The Pointbus current rating of this device is 75 milliamperes at 5 volts DC. The dimension of this product measure approximately 56 inches x 12 inches x 75.5 inches (height x width x depth).

1734-8CFG

A 24 VDC digital I/O module, the 1734-8CFG comes with eight configurable points. The maximum POINTBus current of this device is 100 milliamperes at 5 volts DC. It has a 50-volt (continuous) isolation voltage. The dimensions of this module measure 56 mm x 12 mm x 75.5 mm.

1734-8CFGDLX

A POINT I/O module, the Allen-Bradley 1734-8CFGDLX supports a 24-volt direct current (DC) voltage. It is suitable for use as a basic input/output module that can aid in interfacing controllers and field signaling devices, as well as other control elements. This device has a 50-volt (continuous) isolation voltage. The dimensions of the 1734-8CFGDLX measure 56 mm x 12 mm x 75.5 mm.

1734-ACNR

The Allen Bradley 1734-ACNR is a ControlNet adapter module from the POINT I/O line of products. It has an input voltage of 24 VDC and an inrush current of 6 amperes for a 10-millisecond duration. This unit has a 24-volt DC field side power requirement at 425 milliamperes maximum. The 1734-ACNR has a PointBus output current of 1-ampere maximum at 5 volts DC. The product dimensions of the 1734-ACNR are 76.2 millimeters x 54.9 millimeters x 133.4 millimeters.

1734-ADN

The 1734-AND by Allen Bradley is a POINT I/O DeviceNet adapter module. The module allows for control and communication with I/O modules via the DeviceNet link. This unit has a communication rate of 125K bit/s (500m max), 250K bit/s (250m max), and 500K bit/s (100m max). The 1734-ADN can power a maximum of 63 modules, and it has a maximum of 504 I/O points. This module’s input voltage ranges from 10 volts DC to 28.8 volts DC. Additionally, its POINTBus current rating is 1000 milliamperes.

1734-ADNX

The Allen Bradley 1734-ADNX POINT I/O DeviceNet adapter connects to and controls POINT I/O modules on the DeviceNet network. The DeviceNet communication rates of this module include 125K bit/s, 250K bit/s, and 500K bit/s. The DeviceNet current of the 1734-ADNX is 30 milliamperes. The input voltage rating required to power this device is 24 volts DC (nominal), in addition to a voltage range of 10 to 28.8 volts DC.

1734-AENT

Designed and produced by Allen Bradley, catalog number 1734-AENT is an Ethernet I/P adapter module belonging to the POINT I/O line of products. This device supports up to 63 I/O modules. It has a total of six (6) status indicators. The 1734-AENT consumes a max of 4.5 watts at 28.8 volts DC. It also dissipates a max of 15.5 watts at 28.8 volts DC. The isolation voltage of the 1734-AENT is rated at 50 volts (continuous). This adapter module has physical dimensions that measure approximately 76.2 millimeters x 54.9 millimeters x 133.4 millimeters.

1734-AENTR

Part number 1734-AENTR from Allen Bradley is a POINT I/O dual-port Ethernet/IP adapter. The input voltage rating of this device is 24 volts DC nominal. Additionally, the input voltage of this unit should range from 10 to 28.8 volts direct current (DC). Furthermore, the 1734-AENTR has a maximum inrush current of 6 amperes for a duration of 10 milliseconds. This adapter is equipped with seven (7) status LED indicators.

1734-APB

Part number 1734-APB is an Allen Bradley PROFIBUS adapter module. This device is part of the POINT I/O series of products. This unit has an input voltage rating of 24 volts DC nominal, along with an input voltage range of 10 to 28.8 volts DC. The 1734-APB has a maximum inrush current rated at 6 amperes for 10 milliseconds. It has a 1250-volt RMS isolation voltage. The physical dimensions of this product measure 3.0 inches x 2.16 inches x 5.25 inches.

1734-ARM

The Allen-Bradley 1734-ARM is an address reserve module that preserves the numbering schemes of purchased I/O modules by reserving the modules' addresses and slot numbers. It is a digital and analog module from the POINT I/O product family. The structure and address of non-parameterized signal modules are replaced and retained by a signal module. This module does not communicate I/O data without module configuration.

1734-CTM

The Allen Bradley 1734-CTM POINT I/O common terminal module expands the termination capability of a POINT I/O module. The field power bus supply voltage ranges from 10 to 28.8 VDC or 120/240 VAC. Additionally, the output current of the field power bus is rated at 2 amperes per point or a maximum of 4 amperes for the module. The 1734-CTM has dimensions measuring 56 millimeters x 12 millimeters x 75.5 millimeters.

1734-EP24DC

Manufactured by Allen-Bradley, catalog number 1734-EP24DC is an expansion power supply belonging to the POINT I/O product line. This device has a 24-volt DC nominal input voltage rating. In addition, the input voltage range of the 1734-EP24DC is 10 - 28.8 volts DC. This product has a maximum inrush current of 6 amperes for a 10-millisecond duration. The 1734-EP24DC has a maximum power consumption of 9.8 watts at 28.8 volts DC, in addition to a maximum power dissipation of 3.0 watts at 28.8 volts DC. The dimensions of this expansion power supply approximately measure 76.2 mm x 25.4 mm x 133.4 mm.

1734-EPAC

The Allen-Bradley 1734-EPAC is a POINT I/O 120 to 240 VDC expansion power supply that sends field power to I/O modules. It is also used to separate field power, logically and functionally partition input and output modules, and group modules according to a specific function or task. This power supply can accommodate between 4 and 17 I/O modules.

1734-FPD

The 1734-FPD from Allen Bradley is a field potential distributor module. This module is part of the POINT I/O series of products. This product has an input voltage rating of 12/24 volts DC or 120/240 volts AC, along with an input voltage range of 10 to 28.8 volts DC. Additionally, the maximum input current of the 1734-FPD is 10 amperes. This device has a pass-through POINTBus current. The approximate dimensions of this module measure 76.2 mm x 25.4 mm x 133.4 mm. The 1734-FPD is not equipped with an enclosure.

1734-IA2

A 120-volt alternating current (AC) POINT I/O module, the 1734-IA2 is part of the 1734 product group. It has two non-isolated, sinking input points. ControlNet, DeviceNet, and EtherNet/IP are among the networks that are supported. It is an open-style DIN-mounted module. The dimensions of this product measure 56.0 mm x 12.0 mm x 75.5 mm.

1734-IA4

Catalog number 1734-IA4 is an AC input module. This unit was manufactured by Allen-Bradley, and it belongs to the POINT I/O product series. This unit has four (4) non-isolated sinking inputs. The on-state voltage range of this device is 65 VAC to 132 VAC, with a nominal on-state voltage of 120 VAC. The nominal input impedance of this device is rated as 10.6 kilo-ohms. This module can be mounted via the use of a DIN rail. The dimensions of this module approximately measure 56 millimeters x 12 millimeters x 75.5 millimeters. Additionally, the approximate weight of the 1734-IA4 is 30.9 grams.

1734-IB2

Part number 1734-IB2 is an input module from the POINT I/O product series. It was designed and produced by Allen Bradley. This module has two (2) sinking inputs. The on-state voltage of the 1734-IB2 ranges from 10 to 28.8 VDC with a nominal voltage of 24 VDC. The approximate weight of the 1734-IB2 is 30.9 grams.

1734-IB4

The Allen Bradley 1734-IB4 is a POINT I/O input module with four sinking input channels. The on-state voltage of this device ranges from 10 - 28.8 volts DC, while the on-state current ranges from 2 - 5 milliamperes. The 1734-IB4 has a maximum input impedance rated at 4.7 kilo-ohms. This module is equipped with four yellow indicators located on the logic side. The 1734-IB4's weight is approximately31.8 grams.

1734-IB4D

Product number 1734-IB4D is a discrete input module from Allen Bradley. This unit is a part of the POINT I/O product line. This device has a nominal supply voltage rating of 24 volts DC, in addition to a voltage range of 10 to 28.8 volts DC. The POINTBus current rating of the 1734-IB4D is 50 milliamperes max at 5 volts DC. It has dimensions that measure approximately 56 mm x 12 mm x 75.5 mm (height x width x depth).

1734-IB8

Catalog number 1734-IB8 is an input module belonging to the POINT I/O series of products. This input module has eight (8) sinking input channels. The on-state voltage range of this device is 10 to 28.8 volts DC with a nominal on-state voltage of 24 volts DC. Additionally, the on-state current range of the 1734-IB8 is 2 to 5 milliamperes with a nominal on-state current of 4 milliamperes at 24 volts DC. This input module has a rated power dissipation of 1.6 watts max at 28.8 volts DC, as well as a rated thermal dissipation of 5.5 BTU/hr max at 28.8 volts DC.

1734-IB8S

Catalog number 1734-IB8S is a POINT I/O Guard I/O safety module. This module from Allen Bradley comes in a Series A version and a Series B version. The 1734-IB8S has a total of eight (8) current-sinking input channels and four (4) current sourcing output channels. The on-state input voltage of this device ranges from 11 to 30 volts DC at 3.5 milliamperes. This safety module has an approximate weight of 62.4 grams. Additionally, the physical dimensions of this module measure approximately 77 x 25 x 55 millimeters.

1734-IE2C

Part number 1734-IE2C is a POINT I/O analog input module from Allen Bradley. This module has 2 input channels. This device requires a 24-volt DC input voltage to operate. The input signal ranges of the 1734-IE2C include 4 to 20 mA and 0 to 20 mA. It also has a 50-volt (continuous) rated isolation voltage. The 1734-IE2C has a 16-bit resolution. This device is equipped with an open enclosure, and it can be mounted using a DIN rail.

1734-IE2V

The Allen-Bradley 1734-IE2V is a POINT I/O analog input module. This unit is equipped with 2 input points supporting single-ended, non-isolated, voltage inputs with a signal range of 0 to 10V and +/-10 V. The module also allows for delta-sigma conversion with a power dissipation rating of 0.75 watts at 28.8 VDC. The 1734-IE2V has a 15-bit resolution. This module has an open-type enclosure with DIN rail mounting capability.

1734-IE4C

Product number 1734-IE4C is an analog input module manufactured by Allen Bradley. It belongs to the POINT I/O series of products. This unit has four single-ended, non-isolated, current input channels. These input channels have signal ranges of 4 - 20 mA and 0 - 20 mA. The 1734-IE4C requires an input voltage rated at 24 volts DC. The dimensions of this module measure 56.0 mm xProduct number 1734-IE4C is an analog input module manufactured by Allen Bradley. It belongs to the POINT I/O series of products. This unit has four single-ended, non-isolated, current input channels. These input channels have signal ranges of 4 - 20 mA and 0 - 20 mA. The 1734-IE4C requires an input voltage rated at 24 volts DC. The dimensions of this module measure 56.0 mm x 12.0 mm x 75.5 mm. The 1734-IE4C has an open-type enclosure with DIN rail mounting capability.

1734-IE4S

Product number 1734-IE4S is a safety analog input module. This device was manufactured by Allen Bradley as part of the POINT Guard I/O line of products. It has four (4) single-ended inputs. The input ranges of the 1734-IE4S include +/-5V, +/-10V, 0-5V, 0-10V, 0-20 mA, and 4-20 mA. This module has four analog input indicators, four sensor power indicators, and one power indicator. The 1734-IE4S has an approximate weight of 68 grams. Additionally, the approximate dimensions of this unit measure 77 mm x 25 mm x 55 mm.

1734-IE8C

The Allen Bradley 1734-IE8C is a high-density current input module from the 1734 POINT I/O product family. This module has 8 single-ended inputs with a POINTBus current of 75 mA at 5 VDC. It has an input signal range of 4 to 20 mA and 0 to 20 mA, as well as a 16-bit input resolution. The 1734-IE8C supports the TCP/IP communication protocol. This module allows for rail mounting with front installation. It has dimensions that measure 12 mm x 56 mm x 75.5 mm.

1734-IJ

Manufactured by Allen-Bradley, catalog number 1734-IJ is an encoder/counter module. The rated input voltage of the 1734-IJ is 5 volts. Additionally, the rated input currents of this product include 19.1 mA at 5volts DC and 25.7 mA at 6 volts DC. This device has a 160 mA max POINTBus current rating. The 1734-IJ has physical dimensions that measure approximately 56.0 mm x 12.0 mm x 75.5 mm.

1734-IK

Part number 1734-IK is an encoder/counter module belonging to Allen Bradley's POINT I/O line of products. It has one (1) input channel with a voltage ranging from 15 to 24 volts DC. The input current of this product is 6.1 milliamperes at 15 volts DC and 10.2 milliamperes at 24 volts DC. The 1734-IK has a 160-milliampere maximum POINTBus current. The dimensions of this encoder/counter module measure 56.0 mm x 12.0 mm x 75.5 mm.

1734-IM2

The Allen-Bradley 1734-IM2 is a digital AC input module from the POINT I/O series of products. It has two non-isolated sinking inputs, an eight-position key switch, and real-time status indicators. The on-state voltage ranges from 159 volts AC to 264 volts AC. Additionally, it has a nominal on-state voltage rated at 220 volts AC. This module has an open-type enclosure and can be mounted using a DIN rail mount.

1734-IR2

Part number 1734-IR2 is an RTD input module produced by Allen Bradley as part of the POINT I/O line of products. This RTD, or resistance temperature detector, input module features two single-ended, non-isolated input channels. This unit supports RTD sensor inputs, as well as directly-connected 0 - 600 ohm analog signals. The dimensions of the 1734-IR2 measure approximately 56 mm x 12 mm x 75.5 mm. This unit has built-in alarms for diagnostics and status indications.

1734-IR2E

The Allen Bradley 1734-IR2E is a POINT I/O RTD input module. This module is equipped with two (2) analog, single-ended input channels. The 1734-IR2E has a 16-bit resolution, and it utilizes the signed integer type data format. The enclosure of this device is that of an open type. The purpose of the 1734-IR2E is to monitor the network and module statuses of connected inputs.

1734-IT2I

The Allen Bradley 1734-IT2I is a POINT I/O RTD and thermocouple input module. This module features two (2) analog thermocouple inputs that are differential and individually isolated with a voltage range of ±75 mV. The POINTBus current of the 1734-IT2I is 175 mA. Additionally, this unit has a 15-bit resolution. This module has an open-type enclosure. This product supports TCP/IP communications. The 1734-IT2I may be mounted via the use of a DIN rail mount.

1734-IV2

Part number 1734-IV2 is a source input module that was manufactured by Allen Bradley. It belongs to the POINT I/O product series. This module has two (2) input points. The on-state voltage of the 1734-IV2 ranges from 10 VDC to 28.8 VDC with a 24 VDC nominal on-state voltage. The dimensions of the 1734-IV2 measure 56 mm x 12 mm x 75.5 mm.

1734-IV4

Product number 1734-IV4 is an Allen Bradley source input module belonging to the POINT I/O product series. This unit has four (4) sourcing input channels. The nominal on-state voltage of the 1734-IV4 is rated as 24 volts direct current (DC). This module has a POINTBus current of 75 milliamperes maximum at 5 volts DC. The approximate dimensions of this device measure 56 mm x 12 mm x 75.5 mm. Additionally, the approximate weight of the 1734-IV4 is 31.8 grams.

1734-IV8

Catalog number 1734-IV8 is a digital source input module with a POINT interface. This unit was manufactured by Allen Bradley. It includes eight input points. Additionally, this device has eight yellow status indicators on the logic side of the module.

1734-MB

The 1734-MB is a POINT I/O mounting base manufactured by Allen-Bradley. This mounting base allows for the installation of I/O modules, adapters, or power supplies on a controller. The 1734-MB provides accurate locking to prevent incorrect placement. This mounting base measures 8.0 inches x 8.0 inches x 6.0 inches with a weight of approximately 0.45 kilograms. It can be mounted on a DIN rail to provide access to the backplane current and power supply via eight removable base locking screws.

1734-OA2

The Allen-Bradley 1734-OA2 POINT I/O 120/220 VAC output module has 8 key-switch positions and two non-isolated current sourcing outputs. It has an external voltage supply rating of 120/220 VAC at 60 hertz, as well as an isolation voltage rating of 240 VAC. This unit has an open-style enclosure. The rated power dissipation of this module is 2 watts at 264 VAC, and the rated thermal dissipation is 6.8 BTU at 264 VAC.

1734-OA4

The 1734-OA4 from Allen Bradley is a POINT I/O output module. This product has 4 non-isolated sourcing output channels with a nominal on-state voltage rating of 120/220 volts AC. The 1734-OA4 has a maximum POINTBus current rating of 75 milliamperes at 5 volts DC. Additionally, the isolation voltage of this module is rated as 240 volts (continuous). The approximate weight of the 1734-OA4 is 30.9 grams.

1734-OB2

The 1734-OB2 POINT I/O digital output module from Allen Bradley has two current sourcing and isolated outputs. It has a minimum on-state voltage of 10 volts DC and a maximum on-state voltage of 28.8 volts DC. It has a 0.2-volt DC drop voltage and an on-state current of 1.0 mA.

1734-OB2E

The Allen-Bradley 1734-OB2E is a 24 VDC output module with two non-isolated enhanced source output channels. It has a 2-ampere maximum output current rating, with a 1-ampere rated current per output. This module's on-state voltage ranges from 10 VDC to 28.8 VDC, with a 24 VDC nominal on-state voltage rating. This module is a part of the POINT I/O product series.

1734-OB2EP

Product number 1734-OB2EP is a protected output module that was produced by Allen Bradley. It has an input voltage range of 10 to 28.8 volts direct current (DC). The maximum output current rating is 4.0 amperes per module and 2.0 amperes per channel, with a POINTBus current of 75 milliamperes at 5 volts DC.

1734-OB4

The Allen Bradley 1734-OB4 is an output module from the 1734 POINT I/O product series. It has 4 non-isolated sourcing outputs. The output voltage of this module is 24 VDC, and the POINTBus current is rated as 75 mA at 5 volts DC. The 1734-OB4's on-state voltage ranges from 10 VDC to 28.8 VDC. The maximum power dissipation rating of this module is 1.2 watts at 28.8 VDC, while its maximum thermal dissipation rating is 4.1 BTU/hr at 28.8 VDC.

1734-OB4E

The Allen-Bradley 1734-OB4E is an electronically-fused 4-channel POINT I/O output module. For short-circuit and wire-off diagnostics, it has point-level output fault states. The option of direct-connect or rack-optimized communications is available. The maximum POINTBus current of this module is 75 milliamperes at 5 volts DC. Additionally, the 1734-OB4E requires a 24-volt DC (nominal) external power supply voltage to properly operate, along with a voltage range of 10 to 28.8 volts DC.

1734-OB8

Product number 1734-OB8 is a POINT I/O output module that was produced by Allen Bradley. This module has eight (8) non-isolated, sourcing outputs. This unit has a nominal on-state voltage rated at 24 volts direct current (DC) with an on-state voltage range of 10 to 28.8 volts DC. The 1734-OB8 has eight output status indicators that light up yellow and two (2) module/network status indicators that light up green and/or red. The maximum POINTBus current of this device is 75 milliamperes at 5 volts DC. The approximate weight of this unit is 35.4 grams.

1734-OB8E

The Allen Bradley 1734-OB8E is a POINT I/O protected output module with 8 output channels. This module’s external voltage supply is rated at 24 volts DC. Additionally, its POINTBus current is rated as 75 mA at 5 volts DC. Furthermore, the maximum power dissipation of the 1734-OB8E is 2.0 watts at 28.8 volts DC. The physical dimensions of this module measure 56.0 mm x 12.0 mm x 75.5 mm (height x width x depth).

1734-OB8S

Product number 1734-OB8S is an Allen Bradley safety digital output module from the POINT Guard I/O line of products. This module has eight current-sourcing output channels. The maximum current of each output channel is 1 ampere. Additionally, the rated supply voltage of the 1734-OB8S is 24 volts direct current (DC). This unit has physical dimensions that approximately measure 77 mm x 25 mm x 55 mm (3.03 in. x 0.98 in. x 2.17 in.). Additionally, this device has an approximate weight of 62.4 g (2.2 oz).

1734-OE2C

The 1734-OE2C by Allen Bradley is a current output analog module belonging to the POINT I/O product series. This product has two (2) single-ended current outputs that are also non-isolated. The current ranges of this unit's outputs include 0-20 mA and 4-20 mA. The 1734-OE2C provides digital to analog conversion at its outputs with a resolution of 13 bits. Its POINTBus current is rated as 75 mA at 5 VDC, and the voltage supply is rated as 24 VDC. The physical dimensions of this module measure 56 mm x 12 mm x 75.5 mm.

1734-OE2V

Part number 1734-OE2V is a POINT I/O voltage output analog module from Allen-Bradley. This device has two single-ended, non-isolated voltage outputs. Additionally, the output voltage ranges of this module include 0 - 10 volts and +/- 10 volts. The 1734-OE2V has a 14-bit resolution. The maximum POINTBus current of this module is 75 mA at 5 volts DC. The 1734-OE2V has an approximate weight of 36 grams.

1734-OE4C

The Allen Bradley 1734-OE4C is a POINT I/O 4-channel analog current output module. The four output points of this device have current ranges of 4 to 20 mA or 0 to 20 mA. This module was designed to have a resolution of 16 bits. Its POINTBus current is rated as 75 mA at 5 volts DC. The approximate weight of the 1734-OE4C is 36.9 grams, and the physical dimensions measure approximately 56.0 millimeters x 12.0 millimeters x 75.5 millimeters.

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