Allen-Bradley 1734-OB4 4-Channel Digital Output Module | POINT I/O

Allen-Bradley 1734-OB4 4-Channel Digital Output Module – POINT I/O Series

When a single output module fails on a running production line, the consequences cascade instantly — conveyors stop, actuators freeze, and every minute of unplanned downtime translates directly into lost revenue and missed delivery commitments. In high-density automation environments where space is at a premium and reliability is non-negotiable, the output module is the last link between your controller logic and the physical world. Without a proven, specification-matched replacement, your entire system remains offline.

The Allen-Bradley 1734-OB4 is a 4-channel sourcing digital output module engineered for the POINT I/O platform — Rockwell Automation’s modular, DIN-rail-mounted I/O system designed for distributed control architectures. Within the 1734 series, the OB4 occupies a foundational role: it delivers four independently controlled 24V DC sourcing outputs in a compact single-slot form factor, making it the go-to choice for machine builders and system integrators who need reliable discrete output capability without sacrificing panel space. Globally, the POINT I/O platform is deployed across tens of thousands of installations in automotive, food & beverage, packaging, and material handling industries, and the 1734-OB4 remains one of its most widely specified output modules.

Technical Specifications

• Part Number: 1734-OB4
• Series: Allen-Bradley POINT I/O (1734 Series)
• Output Type: 4-Channel Sourcing (PNP) Digital Output
• Output Voltage: 10–28.8V DC
• Output Current: 0.5A per channel
• Total Module Current: 2A maximum
• Communication: Via POINT I/O adapter (DeviceNet, EtherNet/IP, ControlNet, PROFIBUS, etc.)
• Backplane Current Draw: 75mA @ 5V DC
• Operating Temperature: 0°C to 55°C (32°F to 131°F)
• Storage Temperature: -40°C to 85°C
• Relative Humidity: 5–95% non-condensing
• Mounting: DIN rail (35mm)
• Dimensions: Single-slot POINT I/O module
• Certifications: UL, CE, cUL (verify current listing with Rockwell)
• Weight: Approx. 100g

Note: All specifications are based on published Rockwell Automation documentation. Verify against the official 1734-OB4 datasheet for your specific revision.

Key Features & Benefits

• 4 Independent Sourcing Outputs: Each channel operates independently, enabling precise control of solenoids, relays, indicator lights, and other 24V DC loads without cross-channel interference.
• Compact Single-Slot Design: Maximizes panel density in space-constrained enclosures — critical for machine-level distributed I/O installations.
• Hot-Swap Capable: Modules can be removed and replaced without powering down the entire system when used with compatible POINT I/O adapters, minimizing maintenance downtime.
• Plug-and-Play Integration: Automatic configuration via the POINT I/O adapter eliminates manual DIP switch settings, reducing commissioning time.
• Robust Electrical Isolation: Optical isolation between field-side outputs and backplane logic protects the controller from field-side voltage transients.
• Wide Network Compatibility: Works across all major POINT I/O adapter protocols, giving integrators flexibility to deploy in existing network architectures.
• LED Status Indicators: Per-channel output status LEDs enable rapid field diagnostics without test equipment.

Industry & Equipment Applications

• Automotive Manufacturing: Body welding lines, paint shop conveyors, assembly station actuator control
• Food & Beverage: Filling machine valve control, conveyor routing, packaging line solenoid actuation
• Packaging Machinery: Case erectors, labelers, palletizers requiring high-density discrete output control
• Material Handling: Sortation systems, diverter gates, warehouse automation equipment
• Water & Wastewater Treatment: Pump control panels, valve actuation in distributed remote I/O panels
• Machine Tool: CNC auxiliary output control, coolant valve actuation, tool changer sequencing
• OEM Machine Builders: Any application requiring compact, reliable 24V DC sourcing output in a Rockwell-based control architecture

System Integration & Compatible Parts

The 1734-OB4 is designed to operate within the Allen-Bradley POINT I/O ecosystem. Compatible and commonly paired components include:

• POINT I/O Adapters: 1734-AENT (EtherNet/IP), 1734-ADN (DeviceNet), 1734-ACNR (ControlNet), 1734-APB (PROFIBUS)
• POINT I/O Power Supplies: 1734-EP24DC, 1734-EPAC
• Input Modules (complementary): 1734-IB4, 1734-IB8, 1734-IV4
• Terminal Bases: 1734-TB, 1734-TBS (included with module or sold separately depending on revision)
• Compatible Controllers: Allen-Bradley CompactLogix (1769), MicroLogix, ControlLogix (via remote I/O adapter)

Always verify firmware and catalog revision compatibility with your existing adapter and controller before ordering.

Our Quality Assurance Process

At Konmask.com, every Allen-Bradley 1734-OB4 unit we supply goes through a structured verification process before shipment:

• Source Verification: Units are sourced from authorized distributors, certified resellers, or directly from documented supply chains with full traceability.
• Visual & Physical Inspection: Each module is inspected for label integrity, connector condition, housing damage, and revision marking consistency.
• Authenticity Check: We cross-reference catalog numbers, date codes, and revision markings against known-good references to identify counterfeit or remarked parts.
• Functional Testing (where applicable): Select units undergo bench-level power-on and I/O verification testing prior to dispatch.
• Secure Packaging: Modules are shipped in anti-static packaging with appropriate cushioning to prevent transit damage.

How to Order

1. Submit an Inquiry: Use the contact form or email support@konmask.com with your required quantity, delivery timeline, and destination country.
2. Receive a Quote: Our team will respond within 1 business day with pricing, lead time, and shipping options.
3. Confirm & Pay: Review the proforma invoice, confirm your order, and complete payment via your preferred method (T/T, PayPal, or other agreed terms).
4. Shipment & Tracking: Your order is packed, inspected, and dispatched with full tracking information provided.
5. After-Sales Support: Our technical team remains available post-delivery for integration questions or warranty claims.

Lead Time: In-stock items typically ship within 3–5 business days. For large quantities or special sourcing, lead times will be confirmed at quotation stage.

Why Choose Konmask.com?

• Industrial Automation Specialists: We focus exclusively on PLC, DCS, and automation hardware — not a generalist marketplace. Our team understands the technical context of every part we supply.
• Global B2B Supply: We serve system integrators, OEM machine builders, MRO procurement teams, and plant maintenance departments across Asia, Europe, the Middle East, and the Americas.
• Counterfeit-Conscious Sourcing: In a market where remarked and counterfeit Rockwell parts are a documented risk, our sourcing and inspection protocols are designed to protect your installation.
• Responsive Quotation: No automated pricing walls. Real engineers respond to your inquiry with accurate, application-aware quotes.
• Flexible Quantities: Whether you need a single replacement unit or a standing order for 500 modules, we accommodate both MRO and project-scale procurement.

Frequently Asked Questions

Q: Is the 1734-OB4 a sourcing or sinking output module?
A: The 1734-OB4 is a sourcing (PNP) output module. It provides a positive voltage signal to the load. If your application requires sinking (NPN) outputs, consider the 1734-OB4E or consult the POINT I/O selection guide.

Q: Can I hot-swap the 1734-OB4 without shutting down the system?
A: Hot-swap capability depends on the POINT I/O adapter in use and the system configuration. Many POINT I/O adapters support module hot-swap; verify with your specific adapter’s documentation and your safety requirements before performing live removal.

Q: What is the difference between the 1734-OB4 and 1734-OB8?
A: The 1734-OB4 provides 4 output channels in a single-slot module, while the 1734-OB8 provides 8 channels. The OB4 is preferred when channel density requirements are lower or when individual channel current demands are higher.

Q: Do you supply new, refurbished, or surplus units?
A: We supply new and surplus (unused, original packaging) units. Any unit that is not factory-new will be clearly identified in the quotation. We do not supply repaired or refurbished modules without explicit disclosure.

Q: Can you provide documentation or a certificate of conformance?
A: Yes. Upon request, we can provide available documentation including packing lists, inspection reports, and certificates of conformance where applicable. Contact us at the time of inquiry.

Q: What is your minimum order quantity (MOQ)?
A: There is no strict MOQ. We accommodate single-unit MRO orders as well as bulk project procurement. Pricing scales with quantity.

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Original Source: https://Konmask.com
Contact: support@konmask.com | +0086 19859288691

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