Discrete Control Solution – Allen-Bradley 1734-OB8 | POINT I/O Series
Where This Product Is Used
The Allen-Bradley 1734-OB8 is a high-density 8-point 24VDC source (PNP) digital output module from the Rockwell Automation POINT I/O platform. It is widely deployed in the following industrial environments:
- Automotive Assembly Lines – Driving solenoid valves, actuators, and indicator lights on body-in-white and powertrain lines.
- Food & Beverage Processing – Controlling conveyor drives, pneumatic cylinders, and filling station actuators in hygienic environments.
- Pharmaceutical Manufacturing – Interfacing with GMP-compliant actuators and status indicators in cleanroom automation cells.
- Material Handling & Logistics – Activating diverters, sorters, and gate controls in high-throughput distribution centers.
- Water & Wastewater Treatment – Switching pump contactors and valve actuators in remote I/O panels.
- Machine Tool & Packaging OEM – Embedded in compact machine frames where DIN-rail space is at a premium.
Technical Specifications
- Part Number: 1734-OB8
- Series: POINT I/O
- Manufacturer: Allen-Bradley / Rockwell Automation
- Output Type: Source (PNP), Solid-State
- Number of Outputs: 8 Points
- Output Voltage: 10–28.8V DC
- Output Current (per point): 0.5 A continuous
- Total Module Current: 4 A max
- Off-State Leakage Current: ≤ 0.5 mA
- On-State Voltage Drop: ≤ 1.0V DC
- Backplane Current (5V): 75 mA
- Backplane Current (24V): 0 mA
- Operating Temperature: 0 to 55°C (32 to 131°F)
- Storage Temperature: -40 to 85°C
- Relative Humidity: 5–95% non-condensing
- Dimensions (H × W × D): 94 × 12 × 71.5 mm
- Weight: Approx. 40 g
- Mounting: POINT I/O DIN-rail adapter (1734-TB, 1734-TBS, or equivalent)
- Certifications: UL, CE, C-Tick, ATEX (Zone 2)
Why Engineers Specify This Model
- Ultra-Slim 12 mm Profile – Maximizes I/O density in compact control panels without sacrificing channel count.
- Hot-Swap Capable – Modules can be removed and replaced under power, minimizing unplanned downtime.
- Electronic Fusing per Point – Individual output protection eliminates nuisance trips and simplifies fault isolation.
- Diagnostic LED per Channel – Green/red status LEDs provide instant visual feedback without a laptop or HMI.
- Network-Agnostic – Compatible with EtherNet/IP, DeviceNet, ControlNet, and PROFIBUS adapters via the POINT I/O backplane.
- Rockwell Studio 5000 / RSLogix 5000 Native – Plug-and-play Add-On Profile (AOP) support for rapid commissioning.
Complete System Bill of Materials
To build a fully operational POINT I/O node with the 1734-OB8, the following components are typically required:
- 1734-OB8 – 8-Point Source Output Module (this item)
- 1734-AENT / 1734-AENTR – EtherNet/IP Adapter (single or dual-port)
- 1734-TB / 1734-TBS – Terminal Base (screw or spring-clamp)
- 1734-EP24DC – POINT I/O Power Supply Expander (if extending beyond 8 modules)
- 1734-TOPS / 1734-TOPNP – End Cap (required to terminate the backplane)
- 24V DC Power Supply – e.g., Allen-Bradley 1606-XLP series
Compliance & Industry Standards
- UL Listed (UL 508)
- CE Marked (EN 61131-2, EN 61000 EMC)
- ATEX Category 3G (Zone 2 hazardous locations)
- C-Tick (Australian EMC compliance)
- RoHS Compliant
- IEC 61131-2 Programmable Controller I/O Standard
Quality Assurance & Sourcing
All modules supplied by Konmask.com undergo a multi-stage verification process:
- Visual inspection against Rockwell Automation OEM packaging and label standards
- Functional power-on test and output channel verification
- Traceability documentation available upon request (lot code, date code)
- Sourced from authorized distributors and verified surplus channels
- 30-day return policy; 12-month warranty on all stocked units
How to Source This Part
Ready to order the 1734-OB8? Here’s how to get started:
- In Stock: Add to cart and check out directly — most orders ship within 1–3 business days.
- Bulk / Project Quantity: Contact us for volume pricing and lead-time commitments.
- Urgent Requirement: Call or WhatsApp +0086 19859288691 for same-day quotation.
- Datasheet / Compliance Docs: Email support@konmask.com and we’ll send the full documentation package.
Application-Specific FAQ
Q: Can the 1734-OB8 drive 24V DC solenoid valves directly?
A: Yes. Each output can source up to 0.5 A continuously, which is sufficient for most standard solenoid valves (typically 100–200 mA). Verify the inrush current of your specific valve against the 0.5 A per-point limit.
Q: Is the 1734-OB8 compatible with ControlLogix and CompactLogix controllers?
A: Yes, via the appropriate POINT I/O adapter (e.g., 1734-AENT for EtherNet/IP). The module appears natively in Studio 5000 with full AOP support.
Q: What is the difference between 1734-OB8 (source) and 1734-OB8E (source with diagnostics)?
A: The 1734-OB8E adds per-point electronic fusing with fault reporting back to the controller. The 1734-OB8 provides LED-level diagnostics only. For applications requiring controller-level fault detection, specify the OB8E.
Q: Can modules be hot-swapped during production?
A: Yes. POINT I/O modules support hot-swap. The adapter will detect the module removal and re-insertion, and the controller can be configured to resume automatically.
Q: What terminal base is required?
A: The 1734-OB8 requires a 1734-TB (screw terminal) or 1734-TBS (spring-clamp terminal) base. The terminal base must be ordered separately.
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Contact: support@konmask.com | +0086 19859288691
