Allen-Bradley 1791-OB32 | 32-Point 24VDC Output Block I/O Module

Allen-Bradley 1791-OB32 32-Point 24VDC Output Module – Block I/O Series

When a discrete output module fails on the production floor, the consequences are immediate and costly: conveyor lines halt, robotic arms freeze mid-cycle, and safety interlocks trip the entire cell offline. Every minute of unplanned downtime in a modern manufacturing environment can cost thousands of dollars — and tracing the fault back to a single failed output channel can take hours without the right spare on hand. The Allen-Bradley 1791-OB32 eliminates that vulnerability by delivering 32 independently controlled 24VDC sourcing output points in a compact, DIN-rail-ready block format that integrates directly into your existing Rockwell Automation control architecture.

Within the 1791 Block I/O family, the 1791-OB32 occupies the high-density discrete output tier — purpose-built for applications that demand maximum I/O density without expanding the control cabinet footprint. Backed by Rockwell Automation’s global installed base of millions of Allen-Bradley I/O nodes, this module is one of the most widely deployed output blocks in automotive, food & beverage, and material-handling automation worldwide. Its proven field reliability and broad compatibility with ControlLogix, CompactLogix, and legacy PLC-5 platforms make it a cornerstone spare for any serious MRO inventory.

Technical Specifications

• Part Number: 1791-OB32
• Series: Allen-Bradley Block I/O
• Output Type: Discrete, Sourcing (PNP)
• Number of Output Points: 32
• Output Voltage: 24V DC
• Communication Interface: Block I/O (DeviceNet / Remote I/O compatible — verify with your system configuration)
• Mounting: DIN rail or panel mount
• Weight: 780 g (as configured)
• Manufacturer: Rockwell Automation / Allen-Bradley

Note: All specifications are sourced from publicly available Rockwell Automation documentation. Konmask.com does not fabricate or alter manufacturer data. Please consult the official 1791-OB32 product manual for full electrical ratings and wiring diagrams.

Key Features & Benefits

• 32-point high density — maximizes output capacity per module slot, reducing total hardware cost and cabinet space
• 24VDC sourcing outputs — directly drives solenoid valves, indicator lights, motor starters, and relay coils without additional signal conditioning
• Block I/O architecture — eliminates the need for a dedicated I/O chassis, simplifying field-level installation and reducing wiring complexity
• Rockwell Automation ecosystem compatibility — seamlessly integrates with Allen-Bradley PLCs and programming environments including RSLogix and Studio 5000
• Rugged industrial design — engineered for continuous operation in harsh factory environments with vibration, dust, and temperature variation
• Proven MRO reliability — one of the most stocked Allen-Bradley output modules globally, ensuring fast replacement and minimal lead time

Industry & Equipment Applications

• Automotive manufacturing: body welding lines, paint shop conveyors, assembly robot end-effector control
• Food & beverage: filling machine actuator control, packaging line solenoid valve sequencing
• Material handling: sortation systems, palletizers, automated guided vehicle (AGV) I/O nodes
• Pharmaceutical: cleanroom conveyor control, batch process valve actuation
• Water & wastewater: pump station valve control, SCADA-linked field I/O
• General discrete manufacturing: any application requiring high-density 24VDC digital output at the machine level

System Integration & Compatible Parts

The 1791-OB32 is designed to work within the broader Allen-Bradley 1791 Block I/O ecosystem. Compatible and commonly paired components include:

• 1791-IB32 — 32-point 24VDC input block (complementary input module)
• 1791-A2B / 1791-A4B — Block I/O adapter modules for Remote I/O and DeviceNet networks
• 1756-DNB / 1769-SDN — ControlLogix and CompactLogix DeviceNet scanner cards
• 1791-CBL series — pre-wired cable assemblies for rapid field termination
• 1492-CABLE series — I/O wiring systems for structured panel builds

Contact our technical team at support@konmask.com to verify compatibility with your specific controller revision and network topology before ordering.

Our Quality Assurance Process

Every Allen-Bradley 1791-OB32 unit shipped from Konmask.com undergoes a structured inspection process before dispatch:

• Visual inspection: housing integrity, connector condition, label legibility, and absence of physical damage
• Firmware & revision verification: catalog number and series letter confirmed against documentation
• Functional bench test: output channel activation verified where test equipment permits
• Anti-static packaging: ESD-safe bags and foam-lined cartons for safe international transit
• Traceability documentation: inspection record available upon request for regulated industries

How to Order

1. Submit an inquiry via the Contact / RFQ form on this page or email support@konmask.com
2. Provide your required quantity, delivery timeline, and destination country
3. Receive a formal quotation with unit price, lead time, and shipping options within 1 business day
4. Confirm the order and complete payment via your agreed terms (T/T, PayPal, or trade assurance)
5. Receive tracking information and shipping documents (commercial invoice, packing list, COO if required)

For urgent requirements or large-volume orders, call or WhatsApp: +0086 19859288691

Why Choose Konmask.com?

• Industrial automation specialists — we focus exclusively on PLC, DCS, and automation hardware, not general electronics
• Global sourcing network — access to genuine Allen-Bradley inventory from authorized distribution channels and verified secondary market sources
• Technical pre-sales support — our team includes engineers who can advise on compatibility, substitution, and system integration
• Fast international shipping — DHL, FedEx, and UPS express options to 150+ countries with full export documentation
• Transparent quotation process — no hidden fees; pricing includes inspection, packaging, and standard export documentation
• After-sales commitment — DOA (Dead on Arrival) replacement policy and post-shipment technical support

Frequently Asked Questions

Q: Is the 1791-OB32 still in production by Rockwell Automation?
A: The 1791 Block I/O series has reached end-of-life status with Rockwell Automation. However, Konmask.com maintains stock of genuine surplus and refurbished units to support legacy system maintenance. Contact us for current availability.

Q: What is the difference between the 1791-OB32 and the 1791-OB16?
A: The primary difference is output point count — the OB32 provides 32 output channels versus 16 on the OB16. Both share the same 24VDC sourcing output technology and Block I/O communication architecture. Choose the OB32 when higher I/O density is required.

Q: Can the 1791-OB32 be used with a ControlLogix system?
A: Yes, via a DeviceNet scanner module (e.g., 1756-DNB) in the ControlLogix chassis. The Block I/O adapter on the 1791-OB32 side must match your network protocol. Please confirm your adapter model before ordering.

Q: Do you provide a warranty on this module?
A: We offer a DOA guarantee on all shipped units. Extended warranty terms are available for volume orders — please discuss with our sales team at the quotation stage.

Q: What documents can you provide with the shipment?
A: Standard documents include commercial invoice, packing list, and inspection report. Certificate of Origin, material safety data, and other trade documents are available upon request.

Q: How long does shipping take to my country?
A: Express courier (DHL/FedEx/UPS) typically delivers within 3–7 business days to most destinations. Economy air freight options are available for cost-sensitive orders. Lead time depends on stock availability confirmed at the time of order.

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

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