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- Allen Bradley
- 1794-AENTRXT
- ControlNet Flex I/O Adapter Module
- USA
- 87.4 mm * 94 mm * 92 mm
- 0.28kg
- Xiamen, China
- New & In Stock
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Technical Report: FLEX I/O ControlNet Redundant XT Adapter 1794-ACNR15XT
1. Product Overview
The 1794-ACNR15XT is a FLEX I/O ControlNet redundant media adapter module with extended temperature (XT) capability, designed for distributed industrial automation systems operating in harsh environments.
It provides a communication interface between FLEX I/O terminal bases and a ControlNet network, supporting dual-channel redundancy (A/B media) for higher system reliability.
This module is intended for applications requiring both network redundancy and environmental robustness, especially in outdoor or high-temperature industrial conditions.
2. Brand Information
- Brand: Industrial Automation Control Brand
- Product Category: FLEX I/O XT 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 XT Series
- System Architecture: Distributed modular I/O platform
- Network Type: ControlNet (Redundant Media)
- Installation Type: DIN rail / panel-mounted rugged system
The XT series is designed for harsh industrial environments with extended temperature range and enhanced mechanical reliability.
4. Product Introduction
The 1794-ACNR15XT functions as a dual-channel redundant ControlNet adapter.
Key functions include:
- ControlNet communication at 5 Mbps
- Dual redundant communication channels (A + B)
- Supports up to 8 FLEX I/O modules per node
- Real-time deterministic data exchange
- Extended temperature operation (-20°C to 70°C)
- Rugged industrial-grade design with enhanced protection
It is widely used in mission-critical systems requiring continuous operation in harsh conditions.
5. Technical Parameters
5.1 Communication Performance
| Parameter | Value |
|---|---|
| Communication Protocol | ControlNet |
| Network Speed | 5 Mbps |
| Redundant Media | Yes (Channel A + B) |
| Max I/O Modules | 8 modules per node |
| Network Topology | Redundant / Single media |
| Cable Type | RG-6 coaxial ControlNet cable |
| Update Mode | Scheduled deterministic communication |
5.2 Electrical Performance
| Parameter | Value |
|---|---|
| Input Voltage Range | 19.2–31.2 V DC |
| Nominal Voltage | 24 V DC |
| FlexBus Output | 5 V DC internal supply |
| FlexBus Current Capacity | up to 640 mA @ 5 V DC |
| Power Consumption | ~4–5 W typical |
| Backplane Current Draw | ~400–450 mA |
| Isolation Voltage | ~50 V continuous (basic insulation) |
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 |
| Compatibility | FLEX I/O XT terminal base system |
| Redundancy Mode | Dual-channel A/B communication |
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 – 0.28 kg (typical ~0.25 kg) |
| Form Factor | Rugged XT adapter module |
5.5 Environmental Conditions (XT Rated)
| Parameter | Value |
|---|---|
| Operating Temperature | -20°C to 70°C |
| Storage Temperature | -40°C to 85°C |
| Humidity | 5%–95% non-condensing |
| Vibration Resistance | Industrial IEC standard |
| Shock Resistance | up to 30G |
| Protection Level | Industrial rugged / conformal coated design |
6. Product Applications
The 1794-ACNR15XT is used in demanding automation environments where both redundancy and temperature resistance are required.
Typical application areas:
- Oil and gas facilities
- Mining automation systems
- Steel and metallurgy plants
- Cement and heavy industry lines
- Outdoor process control stations
- Transportation infrastructure systems
- Remote distributed control systems
- Harsh-environment manufacturing zones
Functional role:
- Redundant ControlNet communication node
- Distributed I/O data interface
- Harsh-environment automation gateway
- High-reliability industrial network module
7. Product Advantages
7.1 Dual Redundant ControlNet Design
Ensures continuous communication even if one network path fails.
7.2 Extended Temperature Capability
Stable operation in -20°C to 70°C environments.
7.3 High System Reliability
Suitable for mission-critical industrial applications.
7.4 Modular Expansion
Supports up to 8 FLEX I/O modules per node.
7.5 Deterministic Communication
ControlNet ensures predictable and synchronized data exchange.
7.6 Rugged Industrial Design
Enhanced mechanical and environmental durability compared to standard models.
8. Recommended Models (Same Series / Related Modules)
| Model | Description | Key Parameters |
|---|---|---|
| 1794-ACNR15 | Standard ControlNet redundant adapter | Normal temperature version |
| 1794-ACN15XT | Single-channel XT ControlNet adapter | Extended temperature, non-redundant |
| 1794-ACN | Basic ControlNet adapter | Single channel communication |
| 1794-AENTRXT | Ethernet/IP XT adapter | Dual-port Ethernet rugged version |
| 1794-ADN | DeviceNet adapter | CAN-based fieldbus |
9. Recommended Models (Same Brand – Popular Modules)
| Model | Type | Key Parameters |
|---|---|---|
| 1756-EN2T | Ethernet communication module | ControlLogix Ethernet interface |
| 1756-IB16 | Digital input module | 16-channel 24V DC input |
| 1756-OB16E | Digital output module | Electronic output switching |
| 1769-L33ER | PLC controller | CompactLogix CPU with Ethernet |
| 1769-PA4 | Power supply module | AC/DC industrial power unit |
10. Summary
The 1794-ACNR15XT is a rugged, redundant ControlNet FLEX I/O adapter designed for harsh industrial environments requiring continuous operation and high network reliability.
Its combination of dual-channel redundancy, extended temperature range, and modular I/O expansion makes it suitable for heavy industry and mission-critical automation systems.