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- Allen Bradley
- 1794-OB32P
- ControlNet Flex I/O Adapter Module
- USA
- 94 mm × 94 mm × 69 mm
- 0.1kg
- Xiamen, China
- New & In Stock
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Allen-Bradley 1794-OB32P Technical Overview and Engineering Guide
1. Product Introduction
The 1794-OB32P is a 32-channel protected digital DC output module designed for modular distributed industrial control systems. It belongs to a flexible I/O architecture used in automation systems requiring high-density output control in a compact footprint.
This module provides 32 sourcing transistor outputs operating at 24V DC, divided into two independent groups of 16 channels. Each channel is electronically protected against overload and short-circuit conditions, improving system stability and reducing maintenance downtime.
It is widely used in machine automation, process control, and large-scale distributed I/O systems where multiple output signals must be controlled efficiently from a remote location.
2. Product Parameters
Electrical Specifications
| Parameter | Specification |
|---|---|
| Output Type | 32-point DC sourcing output |
| Output Configuration | 2 × 16-channel groups |
| Rated Voltage | 24V DC nominal |
| Voltage Range | 10–31.2V DC |
| Max Current per Channel | 0.5 A |
| Max Current per Module | 14 A (group-limited distribution) |
| Output Type | Solid-state transistor |
| On-state Voltage Drop | ≤ 0.5 V DC |
| Off-state Leakage Current | ≤ 0.5 mA |
| Surge Current | 2 A for 50 ms (repeatable) |
| Switching Delay | ~0.5 ms |
| Short Circuit Protection | Electronic protection per channel |
| FlexBus Current | 60–80 mA @ 5V DC |
| Power Dissipation | ~3.3–5.3 W |
| Thermal Dissipation | ~11–18 BTU/hr |
Mechanical Specifications
| Parameter | Specification |
|---|---|
| Dimensions (H × W × D) | 94 mm × 94 mm × 69 mm |
| Weight | ~0.085–0.10 kg |
| Mounting Type | DIN rail (terminal base system) |
| Compatible Base | 1794-TB32 / 1794-TB32S |
| Wiring Method | Screw terminal base |
| Status Indicators | 32 LED channel indicators |
Environmental Specifications
| Parameter | Specification |
|---|---|
| Operating Temperature | 0 to 55 °C |
| Storage Temperature | -40 to 85 °C |
| Vibration Resistance | Industrial standard (5 g range) |
| Shock Resistance | Up to 30 g |
| Humidity | Suitable for industrial environments |
| Protection Level | IP20 enclosure class (system level) |
3. Product Features
The 1794-OB32P is designed for high-density output applications where space efficiency and reliability are critical.
- 32 independent digital output channels
- Dual-group architecture (16 + 16) for power distribution flexibility
- Built-in electronic protection for each output channel
- LED indicators for fast diagnostics and status monitoring
- Compact modular design reduces cabinet space requirements
- Fast switching capability suitable for real-time automation
- Easy replacement without rewiring the entire system
Each channel is independently protected, which reduces the risk of full-module failure due to localized faults.
4. Product Applications
This module is commonly used in large-scale industrial automation systems, including:
- Automotive assembly lines
- Packaging and labeling machinery
- Conveyor and logistics automation systems
- Industrial robotics auxiliary control outputs
- Process control systems in manufacturing plants
- Distributed remote I/O installations
- Heavy machinery control systems
- Power and utility automation systems
Its 32-channel capacity makes it particularly suitable for high-density control requirements in compact control panels.
5. Product Advantages
- Very high channel density reduces hardware footprint
- Dual-group output structure improves load distribution
- Electronic protection enhances operational reliability
- Fast response time supports precise automation control
- Modular system simplifies installation and replacement
- LED diagnostics reduce troubleshooting time
- Reduced wiring complexity compared to centralized I/O systems
- Suitable for scalable distributed automation architectures
6. Brand and Series Information
| Category | Description |
|---|---|
| Brand | Industrial automation control manufacturer (not displayed as requested) |
| Series | FLEX I/O 1794 Series |
| Product Family | Distributed modular I/O platform |
| Module Type | Digital DC output module (32-point high-density) |
The FLEX I/O 1794 series is designed for scalable distributed control systems where multiple types of I/O modules can be combined in one architecture.
7. Recommended Modules – Same Series or Related Models
| Model | Type | Function | Voltage | Weight (kg) | Dimensions |
|---|---|---|---|---|---|
| 1794-OB16P | Protected Output Module | 16-point protected DC output | 24V DC | ~0.10 | 94×94×69 mm |
| 1794-OB16D | Diagnostic Output Module | 16-point output with diagnostics | 24V DC | ~0.12 | 94×94×69 mm |
| 1794-IB16P | Protected Input Module | 16-point DC input module | 24V DC | ~0.10 | 94×94×69 mm |
| 1794-OW8 | Relay Output Module | 8-point relay output | 24V DC | ~0.20 | 94×94×69 mm |
| 1794-IE8 | Analog Input Module | 8-channel analog input | — | ~0.18 | 94×94×69 mm |
8. Recommended Models – Same Brand Popular Modules
| Model | Type | Function | Voltage | Weight (kg) | Dimensions |
|---|---|---|---|---|---|
| 1756-OB16E | Control System Output Module | High-performance 16-channel output | 24V DC | ~0.30 | 150×90×100 mm |
| 1756-IB16I | Control System Input Module | 16-channel isolated input | 24V DC | ~0.30 | 150×90×100 mm |
| 1734-OB8 | Compact I/O Output Module | Small footprint 8-channel output | 24V DC | ~0.10 | 56×75×50 mm |
| 1769-IQ16 | Compact Input Module | 16-channel digital input | 24V DC | ~0.25 | 118×87×40 mm |
| 1769-OB16 | Compact Output Module | 16-channel digital output | 24V DC | ~0.25 | 118×87×40 mm |
9. Engineering Summary
The 1794-OB32P is a high-density industrial output module designed for complex automation systems requiring large numbers of controlled digital signals in a compact footprint.
Its dual-group architecture, electronic protection, and modular flexibility make it suitable for modern distributed control systems where reliability, scalability, and space efficiency are key design requirements.
Compared with lower-channel modules, it significantly reduces wiring complexity and cabinet size while maintaining high operational stability in demanding industrial environments.