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1734-IB8

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Allen-Bradley 1734-IB8 is an eight-point 24 V DC sinking digital input module with selectable input filtering for POINT I/O systems.
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Technical specifications for 1734-IB8

  • Manufacturer:
    Allen-Bradley
  • Part Number:
    1734-IB8
  • Product Family:
    Point I/O 1734
  • Product Type:
    POINT I/O 8-Point Digital Sink Input Module
  • Stock:
    1
  • Revision:
    Series D
  • Input architecture:
    8 sinking inputs in one group
  • Nominal input voltage:
    24 V DC
  • Input filtering:
    0.5 ms hardware plus 0...65 ms selectable
  • POINTBus current:
    75 mA at 5 V DC
  • Keyswitch position:
    1
  • Weight:
    0.0323 kg
  • Estimated shipping dimensions:
    5.66x1.21x7.75cm
  • Tariff Code:
    8537101190
  • Country of origin:
    USA
  • Place of shipment:
    Xiamen,Fujian,China
By purchasing this item, you agree to the Terms & Conditions, ApterPower is not an authorized distributor for listed manufacturers or tradenames and therefore the manufacturer's warranty does not apply. All our products come with ApterPower's 1-year warranty.

More Information

Overview Manuals Specifications Input Filtering Wiring and Status Product Applications

Features:

  • Input group: eight 24 V DC sinking channels
  • Timing control: hardware filtering plus a selectable input-filter value
  • Commissioning aid: channel and module status indicators support wiring checks
1734-IB8 brings eight standard DC sensor inputs into one narrow POINT I/O position.

Its selectable filtering makes timing evidence important when an input is noisy, bouncing, or too short to observe.

Series D identity and the absence of enhanced channel diagnostics distinguish this catalog from nearby variants.

Availability of 1734-IB8 is subject to Apter Power inventory and sourcing confirmation.
Allen-Bradley 1734-IB8 POINT I/O 8-Point Digital Sink Input Module Manuals and Product Resources
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
Allen-Bradley 1734-IB8 POINT I/O 8-Point Digital Sink Input Module Specs

General

  • ManufacturerAllen-Bradley
  • Model1734-IB8
  • ConditionNew Original ready stock
  • Product FamilyPOINT I/O 1734
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.

Match the input timing

  • Sensor behavior: record transition time and pulse width.
  • Hardware stage: include the fixed filter in timing expectations.
  • User setting: select additional filtering for the actual noise level.
  • Acceptance: verify that the shortest valid event remains visible.

Trace an input fault

  • Field voltage: measure the sensor signal at the terminal.
  • Common path: inspect the shared return for the eight-input group.
  • Indicators: compare channel LEDs with controller input data.
  • Mapping: confirm the physical channel matches the controller tag.

Supported product applications

  • Discrete sensors: collect standard 24 V DC sourcing-device signals.
  • Machine interlocks: bring stable digital states into POINT I/O logic.
  • Contact monitoring: filter bounce while preserving required response.
  • Remote panels: consolidate eight sink inputs near field devices.
Description
1734-IB8 supplies eight 24 V DC sinking inputs as one group of eight for the POINT I/O platform. The plain catalog does not add the per-channel diagnostic functions associated with diagnostic variants, so field troubleshooting should rely on input state, wiring, and controller evidence.

The hardware path in 1734-IB8 includes a fixed input filter and a user-selectable additional filter. Filter choice should reflect the sensor transition time and noise environment because excessive delay can hide short events while insufficient filtering can pass contact bounce.

A Series D 1734-IB8 replacement should be checked against the supported terminal base, keyswitch position, field supply, sensor sourcing behavior, and controller configuration. The official installation instructions provide the status-indicator sequence used during commissioning and fault isolation.
Revisions

Revision Part #

Also known as

1734-IB8 Series D
1734-IB8/D, Series D
Alternative Names
Allen-Bradley 1734-IB8 Rockwell Automation 1734-IB8 AB 1734-IB8 1734IB8 1734 IB8 POINT I/O 1734-IB8 digital input module
Technical notes
The main risk with 1734-IB8 is treating an intermittent 24 V DC input as a module fault before checking sensor sourcing, common wiring, and filtering. Confirm Series D, terminal-base support, keyswitch position, supply range, input-state timing, selected filter, controller tag mapping, and indicator behavior under the real machine cycle.
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FAQS

The following is a list of questions commonly asked by our customers. Please contact us if you have a question about our process that is not answered below.
How should the selectable filter on 1734-IB8 be set for a bouncing field contact?
Measure the bounce and minimum valid pulse, then choose enough additional filtering to reject the disturbance without masking required machine events.
Why can the channel indicator on 1734-IB8 disagree with the controller tag?
Check the physical-to-logical channel map, module connection, controller scan timing, filter delay, and whether the measured field voltage reaches the input threshold.
What is the fastest way to separate a sensor fault from a 1734-IB8 input fault?
Measure the sensor signal at the terminal, inspect the common return, compare the channel indicator, and temporarily validate the input with an approved test signal.
Can 1734-IB8 be treated as a replacement for a diagnostic eight-input variant?
No. The plain eight-input catalog does not provide the same diagnostic feature set, so catalog identity and controller configuration must be reviewed.
Which Series D checks are important before 1734-IB8 is inserted into an existing base?
Confirm the exact label, supported base, keyswitch position 1, wiring polarity, 24 V DC field supply, and the controller module definition.
How can 1734-IB8 miss a short sensor pulse even when the wiring is correct?
The pulse may be shorter than the combined hardware and selected filter delay or may occur outside the controller observation path; capture timing before changing settings.