Product Details
Overview
The Allen-Bradley 1794-OB32P is a 32-point DC sourcing digital output module from the FLEX I/O family. It provides reliable and efficient signal output control for distributed I/O applications, supporting up to 4 A total output current. Designed for high-density installations, the module offers integrated electronic protection, compact DIN-rail mounting, and long-term operational stability for industrial control systems.
Technical Specifications
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Manufacturer: Allen-Bradley
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Product Line: FLEX I/O Series
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Model / Part Number: 1794-OB32P
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Product Type: Digital Output Module
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Number of Outputs: 32 sourcing-type outputs
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Nominal Output Voltage: 24V DC
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On-State Voltage Range: 10V DC (min), 24V DC (nom), 31.2V DC (max)
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Output Current Rating: 4 A total (8 outputs @ 0.5 A each)
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Output Type: Current sourcing (PNP)
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FlexBus Current Draw: 60 mA @ 5V DC
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Power Dissipation (Max): 3.3 W @ 31.2V DC
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Thermal Dissipation (Max): 11.2 BTU/hr @ 31.2V DC
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Protection: Electronic short-circuit and overcurrent protection
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Mounting Type: DIN Rail
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Dimensions (L x W x H): 9.4 cm × 6.9 cm × 9.4 cm
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Weight: 0.085 kg
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Operating Voltage: 10–31.2V DC continuous
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Isolation: Field-to-system isolation, no isolation between individual channels
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Status Indicators: Individual output status via LED indicators
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Fusing: Electronic, non-replaceable, resettable protection circuit
Key Features
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32 sourcing outputs for compact, high-density digital control
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Built-in electronic short-circuit protection ensures reliable operation
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Wide DC voltage range for flexible application compatibility
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LED indication for simplified system diagnostics and monitoring
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Compact, lightweight module designed for efficient DIN-rail mounting
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Fully compatible with FLEX I/O communication adapters and terminal bases
Application Scenarios
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Discrete output control in automated manufacturing systems
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Distributed I/O systems using ControlLogix or CompactLogix controllers
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Motor starter and solenoid valve actuation
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Process control applications requiring compact DC output expansion
FAQs
Q: What type of output does the 1794-OB32P provide?
A: It provides sourcing (PNP) digital outputs suitable for 24V DC control applications.
Q: How are the outputs protected?
A: Each output is electronically protected against short circuits and overcurrent conditions.
Q: What is the recommended power supply voltage?
A: The nominal operating voltage is 24V DC, with a range between 10V and 31.2V DC.
Additional Information
- 100% Genuine Parts: All products are original and authentic, ensuring reliable industrial performance.
- 30-Day Refund Guarantee: Return any in-stock item within 30 days in original, unopened packaging for a full refund (excluding shipping and fees).
- 12-Month Warranty: Covers defects in materials or workmanship; excludes misuse, normal wear, or unauthorized modifications.
- Worldwide Shipping: We ship via USPS, UPS, FedEx, and DHL. Delivery times vary by country and may be subject to customs or import fees.
- Support & Contact: Technical and warranty assistance is available anytime. Contact us here: Contact.
- Purchase Guidance: Check product specifications and compatibility carefully before ordering to ensure proper application.
Tech & Buying Guide
Understanding Root Causes of Unplanned PLC Stop Mode in Industrial Automation
Modern Programmable Logic Controllers manage execution through distinct operational states: Run, Stop, Start-Up, and Hold. During power-up, a controller initializes memory registers within Stop mode before briefly transitioning to Start-Up mode. During this phase, internal self-diagnostics evaluate system integrity across hardware and user programs. If the controller detects no critical faults, it enters Run mode to execute the control program continuously. However, any severe system anomaly forces the CPU back into Stop mode immediately to prevent erratic machine behavior across the plant floor.
Human-Machine Interface Design: Essential Guide to HMI Selection, Visualization, and Control System Integration
Human-Machine Interfaces (HMIs) serve as the primary operational window into complex industrial automation systems. Modern HMIs convert raw machine data into clear graphical displays, enabling operators to oversee entire manufacturing processes in real time. Instead of relying on physical control panels full of hardwired switches, engineers program interactive screens using intuitive graphics, dynamic color coding, and responsive touch interfaces. Over my 15 years in control systems engineering, I have observed HMIs transform from basic display screens into sophisticated command centers that drive operational efficiency across DCS and PLC environments.
Understanding Safety Relays in Industrial Automation: Architecture, Operation, and Functional Safety
Standard electromechanical relays provide basic electrical isolation between low-voltage control circuits and high-power output loads. A traditional switching relay features a magnetic coil driving mechanical Common (COM), Normally-Open (NO), and Normally-Closed (NC) contacts. However, standard relays pose severe functional risks when deployed in critical safety interlock circuits. High current inrush or mechanical wear can weld contacts together permanently. If contact welding occurs in an emergency stop circuit, pressing the button fails to halt hazardous machinery movements. Consequently, global functional safety standards prohibit standard relays for critical machine guarding functions.