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- Allen Bradley
- 1769-OB8
- CompactLogix I/O Module
- USA
- 118 mm × 35 mm × 87 mm
- 0.25kg
- Xiamen, China
- New & In Stock
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Technical Profile – 1769-OB8 Compact DC Output Module
The 1769-OB8 is a compact 8-point DC digital output module designed for modular industrial automation systems. It is widely used in PLC-based control architectures where stable 24V DC output control is required for field devices such as relays, solenoids, indicators, and actuators.
This module is engineered for high-speed switching, compact installation, and long-term industrial reliability. It is commonly integrated into machine automation systems, process control equipment, and distributed I/O platforms.
Product Introduction
The 1769-OB8 is a solid-state sourcing transistor output module with 8 independent DC output channels. The module is designed to provide reliable output switching in industrial environments where precise digital control is necessary.
The module supports 24V DC output operation and is optimized for use in compact PLC systems. Due to its transistor-based architecture, it offers faster switching speed and longer operational life compared to traditional relay-based modules.
Its compact mechanical structure allows installation in small control cabinets while maintaining strong electrical performance and thermal stability.
Key Technical Parameters
| Parameter | Specification |
|---|---|
| Output Channels | 8 points |
| Output Type | DC sourcing transistor output |
| Output Voltage Range | 20.4 – 26.4V DC |
| Nominal Output Voltage | 24V DC |
| Current per Output Point | 0.5A @ 60°C / 1.0A @ 30°C |
| Maximum Module Current | 4A |
| Switching Delay ON | 0.1 ms |
| Switching Delay OFF | 1.0 ms |
| Leakage Current | ≤ 1.0 mA |
| Voltage Drop | ≤ 1.0V at rated load |
| Backplane Current Draw | Approx. 100 mA @ 5.1V DC |
| Power Dissipation | Approx. 2.0 W |
| Isolation Voltage | 1200V AC / 1697V DC |
| Surge Current Capability | 2A for 10 ms |
Mechanical Dimensions & Weight
| Parameter | Specification |
|---|---|
| Height | 118 mm |
| Width | 35 mm |
| Depth | 87 mm |
| Mounting Method | DIN rail / panel mount |
| Weight | Approx. 0.25 kg |
Environmental Specifications
| Parameter | Specification |
|---|---|
| Operating Temperature | 0°C to 60°C |
| Storage Temperature | -40°C to 85°C |
| Relative Humidity | 5% – 95% non-condensing |
| Vibration Resistance | Industrial-grade |
| Shock Resistance | Designed for industrial control systems |
| Protection Style | Open-type industrial module |
Product Series
The 1769-OB8 belongs to the:
- 1769 Compact I/O Series
- Compact modular PLC expansion family
- Designed for CompactLogix and MicroLogix automation systems
This product family is recognized for:
- Flexible modular expansion
- Compact cabinet installation
- High compatibility with automation systems
- Reliable industrial communication integration
Brand Overview
The module comes from a globally recognized industrial automation platform known for:
- PLC and PAC controllers
- Distributed I/O systems
- Motion control technologies
- Industrial networking solutions
- Smart manufacturing automation products
Its products are widely used in automotive manufacturing, packaging, logistics, energy systems, and process industries.
Applications
The 1769-OB8 is commonly used in:
- Conveyor system control
- Packaging machine automation
- Industrial assembly equipment
- Pump and valve switching systems
- Motor starter interface control
- HVAC automation systems
- Indicator lamp and alarm systems
- General-purpose machine output control
The module is especially suitable for systems requiring:
- Fast DC output switching
- Compact control cabinet installation
- Reliable transistor-based output performance
Product Advantages
1. Fast Switching Speed
The transistor output design provides extremely fast response time, making it ideal for automation systems requiring rapid signal control.
2. Compact Structure
Its narrow width helps save installation space inside industrial control panels.
3. Long Service Life
Unlike relay-based modules, the solid-state architecture minimizes mechanical wear.
4. Stable Electrical Performance
High isolation capability improves noise immunity and operational stability.
5. Easy Expansion
The module integrates easily into modular PLC systems for scalable automation projects.
6. Low Maintenance
The electronic design reduces maintenance requirements and improves system uptime.
Recommended Models – Same Series or Related Models
| Attribute | 1769-OB8 | 1769-OB16 | 1769-OB16P | 1769-OW8 | 1769-IB16 |
|---|---|---|---|---|---|
| Function | DC Output | DC Output | Protected DC Output | Relay Output | DC Input |
| Channels | 8 | 16 | 16 | 8 | 16 |
| Output Type | Transistor | Transistor | Electronic fused transistor | Relay | Input sensing |
| Voltage Range | 24V DC | 24V DC | 24V DC | AC/DC | 24V DC |
| Current Capacity | 4A module | 8A module | 8A module | Higher relay load | — |
| Response Time | 0.1–1 ms | 0.1–1 ms | 1–2 ms | Mechanical response | Fast sensing |
| Dimensions | 118×35×87 mm | Similar | Similar | Similar | Similar |
| Weight | 0.25 kg | ~0.28 kg | ~0.25 kg | ~0.30 kg | ~0.30 kg |
| Typical Use | Standard DC output | Higher density output | Protected output systems | Heavy load switching | Sensor input systems |
Recommended Popular Models – Same Automation Family
| Attribute | 5069-L320ER | 1756-OB16E | 1756-IF8 | 1734-OB8E | 1769-L24ER-QB1B |
|---|---|---|---|---|---|
| Product Type | PLC Controller | Digital Output Module | Analog Input Module | Distributed I/O Module | Compact PLC |
| Channels | CPU | 16 | 8 | 8 | Integrated I/O |
| Voltage | System-level | 24V DC | Analog signal | 24V DC | Mixed |
| System Category | High-performance control | Control platform I/O | Process analog | Remote field I/O | Compact machine control |
| Installation | Rack-based | Rack-based | Rack-based | Distributed | Compact cabinet |
| Dimensions | Larger controller | Modular size | Modular size | Compact size | Compact controller |
| Weight | ~1 kg+ | ~0.30 kg | ~0.30 kg | ~0.20 kg | ~0.60–1 kg |
| Application | Advanced automation | Output expansion | Analog monitoring | Distributed automation | Small machine systems |
Detailed Technical Analysis
The 1769-OB8 is designed for industrial systems that require dependable digital output control while minimizing cabinet space usage. Compared with relay output modules, transistor output modules such as the OB8 offer:
- Faster switching speeds
- Reduced electrical wear
- Lower maintenance requirements
- Better high-frequency switching capability
The module is particularly suitable for applications involving:
- Frequent switching cycles
- High-speed production equipment
- Automated packaging lines
- Compact machine control systems
Its modular architecture also allows easy integration into expanding automation systems without major hardware redesign.
Summary
The 1769-OB8 is a compact and reliable 8-point DC output module built for industrial automation systems requiring stable and fast transistor-based output control.
Its key strengths include:
- Compact installation size
- Fast digital switching performance
- Long operational lifespan
- Strong industrial electrical isolation
- Excellent integration capability with modular PLC systems
The module remains a widely used solution in manufacturing automation, machine control, and industrial process systems due to its balance of performance, reliability, and installation flexibility.