AB 1734-IB8S
AB 1734-IB8S
AB 1734-IB8S
AB 1734-IB8S
AB 1734-IB8S
AB 1734-IB8S
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1734-IB8S

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Allen-Bradley 1734-IB8S is an eight-channel POINT Guard I/O safety input module for distributed SIL CL 3 and PLe safety functions.
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Technical specifications for 1734-IB8S

  • Manufacturer:
    Allen-Bradley
  • Part Number:
    1734-IB8S
  • Product Family:
    Point I/O 1734
  • Product Type:
    8-Channel Safety Sinking Input Module
  • Stock:
    1
  • Safety Inputs:
    8 sinking channels
  • Safety Capability:
    Up to SIL CL 3 and PLe, Category 4 in a validated system
  • Field Power:
    19.2…28.8 V DC, 25 mA no load
  • Input Voltage:
    11…30 V DC at 40 °C; 11…28.8 V DC at 55 °C
  • Input Current:
    3.5 mA nominal
  • Pulse-test Sources:
    4
  • Backplane Supply:
    5 V DC, 125 mA
  • Isolation:
    50 V continuous field-side to system; no channel-to-channel isolation
  • Status Indicators:
    1 lock, 1 power, and 8 channel indicators
  • Terminal-base Requirement:
    Two 1734-TB/TBS bases or two 1734-TOP/TOPS/TOP3/TOP3S bases
  • Keying:
    Left 8; right 1
  • Operating Temperature:
    -20…55 °C
  • Dimensions:
    2.4 × 7.75 × 5.66 cm
  • Weight:
    0.0624 kg
  • 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 Safety Setup Installation & Wiring Diagnostics Applications
  • Eight-channel safety sinking input module for POINT Guard I/O systems
  • Supports applications up to SIL CL 3 and PLe, Category 4 within a compliant safety architecture
  • Compatible with GuardLogix, Compact GuardLogix, and SmartGuard safety controllers

Allen-Bradley 1734-IB8S is an eight-channel safety sinking input module designed for the POINT Guard I/O platform.

It connects safety input devices to a distributed safety-control network and provides channel, module, and connection diagnostic information to the safety controller.

Before installation or replacement, verify the supported terminal bases, keyswitch positions, Safety Network Number, connection ownership, channel configuration, field power, and validated machine response.

Availability, condition, price, and shipping time for Allen-Bradley 1734-IB8S are confirmed during quotation.

Allen-Bradley 1734-IB8S Manuals, Datasheets, Links

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.

  • Configure 1734-IB8S only within an approved GuardLogix, Compact GuardLogix, or SmartGuard safety architecture
  • Verify the Safety Network Number, connection ownership, channel settings, input delays, and safety signature
  • Document validation results, safe-state behavior, fault reset, proof testing, and authorized configuration changes
  • Install 1734-IB8S on two supported terminal bases; do not use 1734-TB3 or 1734-TB3S
  • Set the left keyswitch to position 8 and the right keyswitch to position 1 before seating the module
  • Use an approved SELV or PELV field supply, grounded DIN rail, suitable enclosure, and documented wiring practices
  • Use module, network, and channel indicators together with controller diagnostic tags when troubleshooting
  • Check field wiring, test-source assignments, shorts, cross faults, configuration ownership, and safety connections
  • After replacement, validate every safety input, fault response, communication-loss action, reset function, and power-cycle recovery
  • Emergency-stop and machine-stop input circuits
  • Guard-door interlocks and safety-switch monitoring
  • Light curtains and other OSSD safety-device input circuits
Description
1734-IB8S is an Allen-Bradley eight-channel safety sinking input module for the POINT Guard I/O platform. Rockwell Automation identifies it as an eight-point safety input module for compatible terminal bases with eight terminations.

The 1734-IB8S accepts 24 V DC field inputs and uses configurable test-source and status functions in a distributed safety system. Terminal-base choice, keying and channel configuration must match the original validated safety design rather than only the module’s point count.

For a 1734-IB8S replacement, record the series and firmware, safety ownership and signature, terminal-base type, field wiring and controller configuration. Revalidate the affected safety function under the Rockwell installation and user-manual procedure before restarting the machine.
Revisions

Revision Part #

Also known as

1734-IB8S Ser A
1734-IB8S/A, Series A, Rev A
1734-IB8S Ser B
1734-IB8S/B, Series B, Rev B
Alternative Names
1734-IB8S 1734 IB8S 1734IB8S Allen-Bradley 1734-IB8S Allen Bradley 1734-IB8S AB 1734-IB8S Rockwell Automation 1734-IB8S
Technical notes
Allen-Bradley 1734-IB8S requires two approved terminal bases. Confirm Series B firmware, keying, ownership, safety signature, field power, pulse-test assignments, channel wiring, and validated safety logic.
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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.
Why does Allen-Bradley 1734-IB8S require two terminal bases?
The safety module spans two POINT I/O base positions. Rockwell requires either two removable-terminal bases or two compatible one-piece bases so all safety and test terminals are available.
Can Allen-Bradley 1734-IB8S be installed on 1734-TB3 or 1734-TB3S bases?
No. The current installation instructions explicitly exclude TB3 and TB3S. Use the documented two-base combinations and set keying to 8 on the left and 1 on the right.
How should pulse-test outputs be assigned when dry contacts feed Allen-Bradley 1734-IB8S?
Configure test sources and input pairs according to the validated safety function so cross-wire and short-circuit detection remains effective; do not parallel test outputs or reuse unverified assignments.
Can an OSSD safety device be wired to Allen-Bradley 1734-IB8S like a simple contact?
Not automatically. Match the device's OSSD behavior, pulse characteristics, common reference, discrepancy timing, and module input configuration to Rockwell's documented safety application.
Why can Allen-Bradley 1734-IB8S remain safety-locked after a replacement module is fitted?
Ownership, Safety Network Number, configuration signature, module keying, and controller project must agree. Resolve the ownership and signature process through the safety controller before forcing operation.
Which checks matter if downstream POINT I/O modules disappear after Allen-Bradley 1734-IB8S is inserted?
Verify both bases are seated, keys match, interlocking pieces and backplane contacts are undamaged, POINTBus power is present, and no base has been separated under power.
How should Allen-Bradley 1734-IB8S be proof-tested in a light-curtain muting function?
Exercise each light-curtain and muting-sensor transition, verify channel discrepancy and fault reactions, confirm the safety output response, and compare the results with the validated safety-function document.

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