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- Allen Bradley
- 1794-ACNR15
- ControlNet Flex I/O Adapter Module
- USA
- 87.4 mm * 94 mm * 92 mm
- 0.22kg
- Xiamen, China
- New & In Stock
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Technical Report: FLEX I/O ControlNet Redundant Adapter 1794-ACNR15
1. Product Overview
The 1794-ACNR15 is a FLEX I/O ControlNet redundant media adapter module used in distributed industrial automation systems. It connects FLEX I/O stations to a ControlNet network while supporting dual-channel redundancy, ensuring higher communication reliability in critical automation environments.
This module is designed for applications where network continuity is required even in the event of a cable or channel failure.
It supports up to 8 FLEX I/O modules per node, making it suitable for medium to large distributed I/O architectures.
2. Brand Information
- Brand: Industrial Automation Control Brand
- Product Category: Distributed I/O Communication Adapter
- Technology Field: Industrial Fieldbus / ControlNet Redundant Networking
- Manufacturing Origin: United States (varies by production batch)
3. Product Series
- Series Name: FLEX I/O Series
- System Architecture: Distributed modular I/O platform
- Network Type: ControlNet high-speed fieldbus
- Installation Type: DIN rail / panel-mounted system
The FLEX I/O system is designed for remote I/O expansion in industrial automation systems requiring modular scalability.
4. Product Introduction
The 1794-ACNR15 functions as a ControlNet communication adapter with redundant media support.
Key functions include:
- ControlNet network communication at 5 Mbps
- Dual-channel redundant communication (Channel A + Channel B)
- Integration of FLEX I/O modules into ControlNet systems
- Real-time deterministic data exchange
- Support for up to 8 I/O modules per adapter node
This redundancy design ensures continuous operation even if one communication channel fails.
5. Technical Parameters
5.1 Communication Performance
| Parameter | Value |
|---|---|
| Communication Protocol | ControlNet |
| Network Speed | 5 Mbps |
| Redundant Media Support | Yes (Channel A + B) |
| Max I/O Modules | 8 modules per node |
| Network Topology | Redundant or single media |
| Cable Type | RG-6 coaxial ControlNet cable |
| Update Mode | Scheduled deterministic communication |
5.2 Electrical Performance
| Parameter | Value |
|---|---|
| Input Voltage Range | 19.2–31.2V DC |
| Nominal Voltage | 24V DC |
| Backplane Output | 5V DC (FlexBus power) |
| FlexBus Output Current | 640 mA max @ 5V DC |
| Power Consumption | ~400 mA @ 24V DC |
| Power Dissipation | 4.6 W typical |
| Inrush Current | up to 25 A (short duration) |
5.3 System Capability
| Parameter | Value |
|---|---|
| System Capacity | up to 8 FLEX I/O modules |
| Node Type | ControlNet redundant adapter node |
| Configuration Tool | PLC programming software |
| Redundancy Mode | Dual media (A/B channels) |
| Compatibility | FLEX I/O terminal base system |
5.4 Physical Dimensions & Weight
| Parameter | Value |
|---|---|
| Height | 87.4 mm |
| Width | 94 mm |
| Depth | 92 mm |
| Mounting Type | DIN rail / panel mount |
| Weight | 0.22 kg (approx. 220 g) |
| Form Factor | Single-slot ControlNet adapter module |
5.5 Environmental Conditions
| Parameter | Value |
|---|---|
| Operating Temperature | 0°C to 55°C |
| Storage Temperature | -40°C to 85°C |
| Relative Humidity | 5%–95% non-condensing |
| Vibration Resistance | Industrial IEC standard |
| Shock Resistance | Up to 30G |
6. Product Applications
The 1794-ACNR15 is widely used in high-reliability distributed control systems.
Typical application areas:
- Automotive manufacturing lines
- Large-scale production systems
- Conveyor and logistics systems
- Packaging machinery
- Process control plants
- High-speed synchronized automation systems
- Redundant safety-critical systems
- Remote distributed I/O networks
Functional role:
- Redundant ControlNet communication node
- Distributed I/O data acquisition module
- High-reliability network interface
- Real-time control data synchronization unit
7. Product Advantages
7.1 Redundant Communication Design
Dual-channel ControlNet ensures continuous communication even if one path fails.
7.2 High System Reliability
Suitable for critical industrial systems requiring uninterrupted operation.
7.3 Modular Expansion Capability
Supports up to 8 FLEX I/O modules per node.
7.4 Deterministic High-Speed Networking
ControlNet provides predictable real-time communication at 5 Mbps.
7.5 Flexible Network Architecture
Supports both redundant and single-media configurations.
7.6 Compact Distributed Design
Reduces central wiring complexity and improves system scalability.
8. Recommended Models (Same Series / Related Modules)
8.1 FLEX I/O ControlNet / Network Modules
| Model | Description | Key Parameters |
|---|---|---|
| 1794-ACN | Standard ControlNet adapter | Single-channel communication |
| 1794-ACN15 | Enhanced ControlNet adapter | Expanded system performance |
| 1794-AENTR | Ethernet/IP adapter module | Dual-port Ethernet communication |
| 1794-ADN | DeviceNet adapter module | 125–500 kbps fieldbus |
| 1794-APB | PROFIBUS adapter module | Up to 12 Mbps communication |
9. Recommended Models (Same Brand – Popular Modules)
| Model | Type | Key Parameters |
|---|---|---|
| 1756-EN2T | Ethernet communication module | High-speed ControlLogix networking |
| 1756-IB16 | Digital input module | 16-channel 24V DC input |
| 1756-OB16E | Digital output module | Electronic sourcing outputs |
| 1769-L33ER | PLC controller | CompactLogix high-performance CPU |
| 1769-PA4 | Power supply module | High-capacity AC input power unit |
10. Summary
The 1794-ACNR15 is a redundant ControlNet FLEX I/O adapter designed for high-reliability industrial automation systems.
Its dual-channel redundancy, deterministic communication, and modular expansion capability make it suitable for mission-critical distributed control applications requiring continuous network availability.