Rugged ArmorPOINT Output Control for High-Performance Machine-Level Automation
The Allen Bradley 1738-OB8EM12 Digital Output Module is a robust ArmorPOINT distributed I/O solution engineered for machine-mounted industrial automation systems. Designed to deliver reliable 24V DC sourcing outputs in harsh operating environments, this module combines rugged construction, fast response performance, and simplified field connectivity for modern decentralized control architectures.
Featuring eight high-performance sourcing outputs with integrated M12 connectors, the 1738-OB8EM12 enables efficient connection of industrial actuators, solenoids, indicators, and other field devices directly at the machine level. Its sealed IP67/IP69K-rated housing eliminates the need for large protective enclosures, helping manufacturers reduce installation complexity and optimize machine wiring layouts.
As part of the ArmorPOINT I/O family, the module integrates seamlessly with EtherNet/IP and distributed Allen Bradley control systems, making it an ideal solution for demanding production environments requiring durability, scalability, and reliable output switching.
Technical Specifications
| Parameter | Specification |
|---|
| Manufacturer | Allen Bradley |
| Product Family | ArmorPOINT I/O |
| Model Number | 1738-OB8EM12 |
| Module Type | Digital Output Module |
| Output Channels | 8 Sourcing Outputs |
| Output Type | 24V DC Sourcing (NPN) |
| Nominal Voltage | 24V DC |
| Operating Voltage Range | 10–28.8V DC |
| Max Output Current | 1.0 A per Channel |
| Max Module Current | 2.0 A per Module |
| Connector Type | DC Micro (M12) |
| Output Configuration | Non-Isolated Outputs |
| POINTBus Current | Approx. 75 mA |
| Power Dissipation | Approx. 0.8–2.0 W |
| Isolation Voltage | 50V Continuous |
| Enclosure Protection | IP65 / IP66 / IP67 / IP69K |
| Operating Temperature | -20°C to 60°C |
| Storage Temperature | -40°C to 85°C |
| Dimensions | Approx. 120 × 72 × 42 mm |
| Weight | Approx. 0.29–0.60 kg |
| Mounting Type | On-machine installation |
Industrial Applications
The 1738-OB8EM12 is widely used in distributed industrial automation systems requiring rugged machine-level output control.
Typical applications include:
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Automotive assembly systems
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Packaging and labeling machinery
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Conveyor and logistics equipment
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Robotics and motion systems
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Material handling automation
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Food and beverage production lines
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OEM machine platforms
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Decentralized EtherNet/IP I/O systems
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High-speed manufacturing equipment
Its sealed M12 connectivity and machine-mount design make it especially suitable for applications exposed to vibration, moisture, and industrial washdown conditions.
Key Advantages
Rugged IP69K Industrial Protection
The sealed ArmorPOINT enclosure provides reliable performance in harsh environments involving dust, vibration, moisture, and washdown exposure.
Simplified Machine-Level Wiring
Integrated M12 connectors reduce installation time while minimizing wiring complexity and cabinet space requirements.
Reliable High-Current Output Capability
Supports up to 1A per output channel for driving industrial actuators, valves, relays, and field devices.
Fast Distributed I/O Integration
Works seamlessly within EtherNet/IP and ArmorPOINT architectures for responsive machine-level automation.
Reduced Downtime During Maintenance
Quick-connect industrial connectors simplify module replacement and service operations.
Scalable Automation Architecture
Supports modular expansion in distributed control systems while maintaining consistent system performance.
Technical FAQs
1. What is the primary function of the 1738-OB8EM12?
It provides eight 24V DC sourcing digital outputs for ArmorPOINT distributed automation systems.
2. How many output channels are included?
The module includes 8 sourcing digital output channels.
3. What type of outputs does the module use?
It uses 24V DC sourcing (NPN) outputs.
4. What is the maximum output current per channel?
Each channel supports up to 1.0 A output current.
5. What connector type is used?
The module uses rugged DC Micro M12 connectors for industrial field wiring.
6. Is the module suitable for harsh industrial environments?
Yes. It supports IP65, IP66, IP67, and IP69K environmental protection ratings.
7. What voltage range does it support?
The operating range is approximately 10–28.8V DC.
8. Can it be mounted directly on machinery?
Yes. The module is designed specifically for on-machine distributed I/O installations.
9. Which systems commonly integrate with this module?
It integrates with ArmorPOINT EtherNet/IP, ControlNet, and DeviceNet architectures through compatible network adapters.
10. What industries commonly use the 1738-OB8EM12?
Automotive, packaging, robotics, logistics, and industrial manufacturing industries commonly use this module.
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