Excellent PLC
System Integration Overview
The Allen Bradley 1786-RPFRXL is an extra-long-distance fiber ring repeater module designed for ControlNet networks. It extends network reach via fiber optic links, supports ring topology for redundancy, and ensures reliable communication in high-noise industrial environments.
From a system integration perspective, this module is ideal for large-scale automation networks requiring long-distance connectivity, network resilience, and galvanic isolation. The 1786-RPFRXL integrates seamlessly into ControlNet systems, allowing engineers to implement robust communication rings with minimal signal loss.
Technical Specifications
| Parameter | Description |
|---|---|
| Model Number | 1786-RPFRXL |
| Module Type | Fiber Ring Repeater Module |
| Media Type | Fiber Optic (Dual Channel) |
| Topology Supported | Point-to-Point, Star, Ring |
| Maximum Segment Length | ~20 km (dependent on fiber type and attenuation) |
| Power Supply | +5 V DC via repeater adapter |
| Current Draw | 570 mA @ 5 V DC |
| Operating Temperature | 0 °C to +60 °C |
| Storage Temperature | –40 °C to +85 °C |
| Environmental Rating | IP20, DIN rail mount |
| Dimensions (W × H × D) | 102 mm × 100 mm × 69 mm |
| Weight | 0.20 kg |
| Mounting | DIN rail (35 mm) |
| Indicators | LED status indicators for fiber channels; fault relay |
Applications / Use Scenarios
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Extending ControlNet networks across large facilities or multiple buildings.
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Implementing redundant ring topology for continuous communication.
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Deploying in high EMI industrial zones (mining, petrochemical, heavy machinery).
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Isolating network segments to prevent ground loops and interference.
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Long-haul communication between remote modules beyond standard copper limits.
Advantages / Key Features
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Extra-Long Distance Support: Fiber links up to ~20 km.
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Media Isolation: Protects against electrical noise and ground loops.
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Redundant Ring Topology: Network continuity maintained if a segment fails.
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Compact DIN-Rail Mounting: Easy panel integration.
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LED Indicators: Quick diagnostics for each fiber channel.
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Industrial-Grade: Suitable for harsh environments, certified for ControlNet applications.
