Machine Safety & Functional Safety Solution — Allen-Bradley 1734-IB8S | POINT Guard I/O Series
The Allen-Bradley 1734-IB8S is an 8-channel safety-rated digital input module from Rockwell Automation’s POINT Guard I/O series. Designed for engineers who demand certified functional safety in compact, modular form, this module integrates seamlessly into safety-critical control architectures across manufacturing, robotics, and process industries.
Where This Product Is Used
The 1734-IB8S is specified wherever machine safety and personnel protection are non-negotiable:
- Automotive Assembly Lines — Emergency stop circuits, light curtain interfaces, and safety gate monitoring on robotic welding and stamping cells
- Packaging Machinery — Dual-channel safety door interlocks and two-hand control stations on high-speed form-fill-seal equipment
- Material Handling & Conveyors — Safety pull-cord and zone-stop inputs for sortation systems and palletizing robots
- Food & Beverage Processing — Hygienic-area safety monitoring where compact I/O footprint reduces panel space in washdown environments
- Oil & Gas / Chemical Plants — SIL 2-rated safety instrumented system (SIS) input acquisition for emergency shutdown (ESD) loops
- Semiconductor & Electronics Fabs — Interlocked access panels and pressure-sensitive mat inputs on automated handling equipment
- Collaborative Robotics (Cobot) Cells — Speed & separation monitoring input capture for ISO/TS 15066-compliant cobot deployments
Technical Specifications
| Part Number | 1734-IB8S |
| Series | POINT Guard I/O |
| Manufacturer | Allen-Bradley / Rockwell Automation |
| Module Type | Safety Digital Input |
| Number of Inputs | 8 channels (configurable as 4 dual-channel safety pairs) |
| Input Voltage | 24V DC (IEC 61131-2 Type 3) |
| Safety Integrity Level | SIL 2 (IEC 62061) |
| Performance Level | PLd, Category 3 (ISO 13849-1) |
| Communication | DeviceNet Safety / EtherNet/IP Safety (adapter dependent) |
| Backplane Current Draw | 75 mA @ 5V DC |
| Operating Temperature | 0°C to +55°C (32°F to 131°F) |
| Storage Temperature | -40°C to +85°C |
| Enclosure Rating | IP20 (panel mount) |
| Dimensions (H × W × D) | 94 mm × 12 mm × 60.4 mm |
| Weight | Approx. 60 g |
| Certifications | UL, CE, TÜV, cULus |
Why Engineers Specify This Model
- Certified SIL 2 / PLd Safety Rating — Meets IEC 62061 and ISO 13849-1 requirements without external safety relays, reducing BOM cost and panel complexity
- Compact POINT I/O Form Factor — 12 mm wide per module; mix safety and standard I/O on the same DIN-rail adapter, minimising cabinet footprint
- Dual-Channel Input Support — Native support for Category 3/4 dual-channel safety devices (E-stops, safety gates, light curtains) with cross-fault detection
- Integrated Diagnostics — Short-circuit, open-wire, and cross-channel fault detection reported directly to the safety controller — no external test equipment required during commissioning
- Seamless Studio 5000 Integration — Add-On Profiles (AOPs) available; safety tags auto-populate in Logix Designer for rapid program development
- Hot-Swap Capable — Replace modules under power without removing the adapter, minimising unplanned downtime on production lines
- Proven Global Install Base — Millions of POINT Guard I/O modules deployed across automotive, food, and process industries worldwide
Complete System Bill of Materials
The 1734-IB8S operates within the POINT Guard I/O ecosystem. A typical safety I/O node requires:
- 1734-AENTR — EtherNet/IP Dual-Port Adapter (or 1734-ADN for DeviceNet)
- 1734-IB8S — This module (Safety Digital Input, 8-ch)
- 1734-OB8S — Safety Digital Output, 8-ch (for output-side safety functions)
- 1734-EP24DC — End Cap / Power Supply Expander (24V DC bus extension)
- 1734-TOP — Removable Terminal Block (screw or spring cage options)
- 1756-L8xS / 5069-L3xS — GuardLogix / Compact GuardLogix Safety Controller
- DIN Rail & Panel Hardware — 35 mm DIN rail, cable duct, and grounding hardware
Contact us for complete system quotations including adapters, controllers, and wiring accessories.
Compliance & Industry Standards
- IEC 62061 — Safety of Machinery: Functional Safety of Safety-Related Electrical Control Systems (SIL 2)
- ISO 13849-1 — Safety of Machinery: Safety-Related Parts of Control Systems (PLd, Cat. 3)
- IEC 61508 — Functional Safety of E/E/PE Safety-Related Systems
- IEC 61131-2 — Programmable Controllers: Equipment Requirements and Tests
- UL 508 — Industrial Control Equipment
- CE Marking — EMC Directive 2014/30/EU & Low Voltage Directive 2014/35/EU
- TÜV Rheinland Certified
- RoHS Compliant
Quality Assurance & Sourcing
At Konmask.com, every Allen-Bradley module passes a documented 4-step verification process before shipment:
- Origin Verification — Part number, date code, and country of manufacture cross-referenced against Rockwell Automation’s authorised distributor records
- Physical Inspection — Label integrity, housing condition, connector pin alignment, and holographic seal authentication checked by trained technicians
- Functional Bench Test — Where applicable, modules are powered and I/O channels verified against published specifications using calibrated test equipment
- Documentation Package — Each shipment includes a packing list, test record, and certificate of conformance; full traceability maintained for 5 years
We source from authorised distributors, OEM surplus channels, and factory-sealed stock. Counterfeit parts are never knowingly listed. If a part fails to meet specifications upon receipt, we offer full replacement or refund.
How to Source This Part
- Confirm Part Number — Verify 1734-IB8S against your existing system’s I/O tree in Studio 5000 / RSLogix 5000
- Check Firmware Compatibility — Confirm adapter firmware revision supports the module series revision (A, B, C); contact us if unsure
- Request a Quote — Email support@konmask.com with quantity, required delivery date, and destination country for a tailored quotation including shipping and duties
- Place Order — Add to cart directly, or request a proforma invoice for bank transfer / corporate PO payment
- Receive & Verify — Inspect packaging on arrival; our QA documentation ships with every order for your records
Lead Time: In-stock items typically ship within 1–3 business days. Ex-stock or special-order items: 5–15 business days. Express DHL/FedEx available.
Application-Specific FAQ
Q: Can the 1734-IB8S achieve SIL 3 in a redundant configuration?
A: The module is rated SIL 2 in a single configuration. For SIL 3 applications, consult Rockwell Automation’s safety manual for 1oo2 redundant architectures using two modules with a GuardLogix controller.
Q: Is this module compatible with a standard (non-safety) 1734-AENT adapter?
A: No. Safety I/O modules require a safety-rated adapter such as the 1734-AENTR or 1734-AENTRXT. Standard adapters cannot process safety data.
Q: Can I mix 1734-IB8S modules with standard 1734 I/O on the same adapter?
A: Yes. POINT Guard I/O adapters support mixed safety and standard modules on the same node, simplifying cabinet design.
Q: What is the maximum cable length for safety input devices?
A: Rockwell recommends a maximum of 30 m for safety input wiring to maintain signal integrity and meet IEC 62061 requirements. Consult the 1734-IB8S installation manual (Pub. 1734-IN058) for detailed wiring guidelines.
Q: Do you supply the matching safety output module (1734-OB8S)?
A: Yes. Contact us for a complete POINT Guard I/O node quotation including adapters, input, and output modules.
Q: Can this module be used in a SIL 2 ESD loop in a process plant?
A: Yes, provided the overall SIS loop design (including field instruments and final elements) is validated to IEC 61511. The 1734-IB8S’s SIL 2 rating supports this application when integrated with a GuardLogix safety controller.
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