Allen-Bradley 1769-OB32 32-Point 24VDC Digital Output Module | Replacement, Equivalent & Selection Guide
The Allen-Bradley 1769-OB32 is a 32-point sourcing digital output module designed for the CompactLogix control system platform. It delivers reliable 24V DC discrete output control for a wide range of industrial automation applications. This page provides full technical specifications, compatible replacement models, and a structured selection guide to help engineers and procurement teams make the right choice.
Technical Specifications
- Part Number: 1769-OB32
- Manufacturer: Allen-Bradley / Rockwell Automation
- Series: 1769 CompactLogix
- Module Type: Digital Output (Sourcing)
- Number of Outputs: 32 points
- Output Voltage: 24V DC
- Output Current: 0.5 A per point (max)
- Total Module Current: 4 A max (all outputs ON)
- Output Type: Transistor (MOSFET), sourcing
- Backplane Current (5V): 120 mA
- Backplane Current (24V): 0 mA
- Operating Temperature: 0°C to 60°C (32°F to 140°F)
- Storage Temperature: -40°C to 85°C
- Relative Humidity: 5% to 95% (non-condensing)
- Dimensions (H × W × D): 118 × 35 × 87 mm
- Weight: Approx. 320 g
- Certifications: UL, CE, CSA, RCM
- Wiring: Removable terminal block (RTB)
Compatible Replacement & Equivalent Models
When the 1769-OB32 is unavailable or under evaluation, the following models may serve as functional replacements or equivalents depending on your system requirements:
- 1769-OB16 – 16-point sourcing output, same series; use two modules to match 32-point capacity
- 1769-OB32T – 32-point sourcing output with individually isolated commons; enhanced isolation version
- 1769-OW8 – 8-point relay output; suitable when higher switching voltage or AC loads are required
- 1756-OB32 (ControlLogix) – 32-point sourcing output for ControlLogix chassis; not directly interchangeable but functionally equivalent in larger systems
- Siemens 6ES7 322-1BL00-0AA0 – 32-point 24VDC digital output for S7-300; cross-platform alternative for non-AB systems
- Mitsubishi QY80 – 16-point transistor output for Q-series; partial equivalent for Mitsubishi-based systems
Note: Always verify electrical ratings, backplane compatibility, and firmware requirements before substituting modules.
Why Choose the Original Model
- Native CompactLogix Integration: Plug-and-play with 1769 backplane — no configuration adapters required
- Studio 5000 / RSLogix 5000 Support: Full tag-based programming and diagnostics
- High-Density Output: 32 points in a single compact slot reduces panel footprint
- Proven Reliability: MOSFET transistor outputs with built-in short-circuit and overload protection
- Removable Terminal Block: Simplifies wiring replacement and maintenance without rewiring
- Global Certifications: UL, CE, CSA — accepted in most international markets
Typical Applications
- Solenoid valve control in fluid power systems
- Motor starter and contactor switching
- Conveyor and material handling automation
- Packaging machine I/O control
- HVAC and building automation systems
- Discrete manufacturing and assembly lines
- Water treatment and pump control panels
System Compatibility
- Compatible Controllers: 1769-L16ER, 1769-L18ER, 1769-L24ER, 1769-L27ERM, 1769-L30ER, 1769-L33ER, 1769-L36ERM, and all CompactLogix 5370/5380 series
- Backplane: 1769 CompactLogix local I/O backplane
- Software: Studio 5000 Logix Designer v21 and above; RSLogix 5000 v16+
- Communication: EtherNet/IP via controller; no standalone network port on module
- Max Modules per System: Up to 30 local I/O modules (controller-dependent)
Selection Guide
Use the following criteria to confirm the 1769-OB32 is the right module for your application:
- Output Count: Need exactly 32 discrete outputs in one slot? → 1769-OB32 ✓
- Load Type: 24V DC sourcing loads (solenoids, relays, indicators)? → 1769-OB32 ✓
- Current per Point: Load draws ≤ 0.5 A per output? → 1769-OB32 ✓
- AC Loads or High-Voltage Switching: Consider 1769-OW8 (relay output) instead
- Isolated Commons Required: Consider 1769-OB32T for individually isolated output groups
- ControlLogix Platform: Use 1756-OB32 for 1756 chassis systems
- Sinking Output Required: Consider 1769-IB32 (input) or check 1769-OB series sinking variants
Quality Assurance & Sourcing
- Condition: New (factory sealed) and refurbished options available
- Origin: Sourced from authorized distributors and verified secondary market suppliers
- Testing: All refurbished units undergo functional testing prior to shipment
- Warranty: 12-month warranty on new units; 6-month warranty on refurbished units
- Lead Time: In-stock items ship within 1–3 business days; contact us for bulk order lead times
- Export Compliance: ECCN EAR99; no export license required for most destinations
How to Order
- Confirm your CompactLogix controller model and available backplane slots
- Verify load current requirements per output point (max 0.5 A)
- Select quantity and condition (new / refurbished)
- Add to cart or contact us for volume pricing and lead time confirmation
- Provide your PO number or project reference for B2B invoicing
📧 Email: [email protected] | 📞 Phone/WhatsApp: +0086 19859288691
Replacement & Compatibility FAQ
Q: Can I replace a 1769-OB32 with a 1769-OB16?
A: Yes, but you will need two 1769-OB16 modules to match the 32-point capacity. Ensure you have two available backplane slots.
Q: Is the 1769-OB32 compatible with MicroLogix controllers?
A: No. The 1769 series is designed exclusively for CompactLogix systems. MicroLogix uses a different I/O bus architecture.
Q: What is the difference between 1769-OB32 and 1769-OB32T?
A: The 1769-OB32T features individually isolated output commons, providing better fault isolation. The standard 1769-OB32 shares commons across output groups.
Q: Can I use this module with Studio 5000 Logix Designer?
A: Yes. The 1769-OB32 is fully supported in Studio 5000 v21 and later, as well as RSLogix 5000 v16+.
Q: Do you supply both new and refurbished units?
A: Yes. Both conditions are available. All units are tested and include a warranty. Contact us to confirm current stock.
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