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- Allen Bradley
- 1794-ACNR15XT
- ControlNet Flex I/O Adapter Module
- USA
- 87.4 mm * 94 mm * 92 mm
- 0.3kg
- Xiamen, China
- New & In Stock
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Technical Report: FLEX I/O ControlNet Redundant Adapter 1794-ACNR15XT
1. Product Overview
The 1794-ACNR15XT is a FLEX I/O ControlNet redundant communication adapter module designed for extreme environment applications. It provides a high-reliability interface between FLEX I/O distributed modules and a ControlNet industrial network with dual-channel redundancy.
The “XT” version indicates extended temperature and harsh environment capability, making it suitable for outdoor, high-vibration, and thermally demanding industrial installations.
This module is used where uninterrupted communication and environmental durability are critical.
2. Brand Information
- Brand: Industrial Automation Control Brand
- Product Category: FLEX I/O Communication Adapter (XT Series)
- Technology Field: Industrial Fieldbus / Redundant ControlNet Systems
- 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 environment automation systems requiring extended temperature tolerance and higher mechanical durability.
4. Product Introduction
The 1794-ACNR15XT functions as a dual-channel redundant ControlNet adapter that connects FLEX I/O modules to a ControlNet network.
Core functions include:
- ControlNet communication at 5 Mbps
- Dual redundant media channels (A + B)
- Integration of up to 8 FLEX I/O modules per node
- Real-time deterministic data exchange
- Extended temperature operation for harsh environments
- Stable operation under vibration and industrial stress conditions
It is designed for mission-critical automation systems requiring both redundancy and environmental robustness.
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 adapter |
| 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 |
| FlexBus Output | 5V DC supply to I/O modules |
| FlexBus Current Capacity | up to 640 mA @ 5V DC |
| Power Consumption | ~4–5 W typical |
| Backplane Current Draw | ~400–450 mA |
| 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 |
| Redundancy Mode | Dual-channel A/B communication |
| Configuration Tool | PLC programming software environment |
| Compatibility | FLEX I/O XT 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 – 0.30 kg (typical ~0.28 kg) |
| Form Factor | Rugged single-slot XT module |
5.5 Environmental Conditions (XT Enhanced)
| Parameter | Value |
|---|---|
| Operating Temperature | -20°C to 70°C (XT extended range) |
| Storage Temperature | -40°C to 85°C |
| Relative Humidity | 5%–95% non-condensing |
| Vibration Resistance | High industrial vibration tolerance |
| Shock Resistance | Up to 30G |
| Environmental Rating | Harsh environment / conformal coated design |
6. Product Applications
The 1794-ACNR15XT is used in demanding industrial environments requiring redundant communication and extended temperature capability.
Typical application areas:
- Offshore oil and gas systems
- Mining automation equipment
- Outdoor process control stations
- Steel and metallurgy production lines
- Cement and heavy industry automation
- High-temperature manufacturing zones
- Transportation infrastructure systems
- Remote distributed control systems
Functional role:
- Redundant ControlNet communication node
- Distributed I/O data aggregation
- Harsh-environment automation interface
- High-reliability industrial network module
7. Product Advantages
7.1 Redundant Communication Architecture
Dual-channel ControlNet ensures continuous operation even if one network path fails.
7.2 Extended Temperature Capability
XT design allows operation in extreme cold and heat environments.
7.3 High System Reliability
Built for mission-critical industrial systems requiring maximum uptime.
7.4 Modular Expansion
Supports up to 8 FLEX I/O modules per adapter node.
7.5 Deterministic Network Performance
ControlNet provides precise timing for synchronized automation systems.
7.6 Industrial Rugged Design
Enhanced mechanical and environmental resistance compared to standard versions.
8. Recommended Models (Same Series / Related Modules)
8.1 FLEX I/O ControlNet XT / Related Modules
| Model | Description | Key Parameters |
|---|---|---|
| 1794-ACN15XT | Standard ControlNet XT adapter | Single media XT version |
| 1794-ACNR15 | Redundant ControlNet adapter | Standard temperature dual-channel |
| 1794-ACN | Basic ControlNet adapter | Single-channel communication |
| 1794-AENTRXT | Ethernet/IP XT adapter | Dual-port industrial Ethernet |
| 1794-ADN | DeviceNet adapter | 125–500 kbps fieldbus |
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 | AC input high-capacity power unit |
10. Summary
The 1794-ACNR15XT is a rugged, redundant ControlNet FLEX I/O adapter designed for harsh industrial environments requiring high reliability and continuous network operation.
Its dual-channel redundancy, extended temperature range, and modular architecture make it suitable for demanding applications such as oil & gas, mining, and outdoor automation systems.