Description
Product Name : 1786-RPTD Allen‑Bradley Input module
Product details:
The Allen-Bradley 1786-RPTD is a ControlNet media repeater module manufactured by Rockwell Automation. It is designed to extend the physical length of a ControlNet network segment, increase the number of allowable nodes, and provide flexible topology options (such as star or tree configurations).
The “D” suffix specifically denotes that this is a Dual-Port Fiber Ring Repeater Adapter or a module equipped with specific port configurations (typically copper-to-fiber or fiber-to-fiber configurations depending on the exact series/matching modules used) designed to handle high-reliability ring or star media extensions.
Technical Specifications (Product Parameters)
Below are the key technical parameters for the 1786-RPTD module:
| Parameter | Specification |
| Brand / Manufacturer | Allen-Bradley / Rockwell Automation |
| Product Series | ControlNet Media Components |
| Model Number | 1786-RPTD |
| Module Type | ControlNet Repeater Module / Adapter |
| Communication Rate | 5.0 Mbps (Standard ControlNet speed) |
| Number of Ports | 2 Ports (Dual-channel capability) |
| Media Support | Fiber Optic / Coaxial (Depending on the specific expansion modules attached) |
| Current Draw | Approx. 400 mA @ 5V DC |
| Operating Temperature | 0^\circC to 60^\circC (32^\circF to 140^\circF) |
| Storage Temperature | -40^\circC to 85^\circC (-40^\circF to 185^\circF) |
| Relative Humidity | 5% to 95% (non-condensing) |
| Isolation Voltage | 500V AC or equivalent DC barrier |
Product Advantages
- Network Extension: Overcomes the distance limitations of standard coaxial ControlNet cabling, allowing communication across significantly longer distances (especially when utilizing fiber optic links).
- Electrical Isolation: Fiber optic ports offer total immunity to electrical noise, electromagnetic interference (EMI), and ground loops, ensuring highly stable data transmission in harsh industrial environments.
- Flexible Topologies: Enables complex network designs, including Star, Tree, and Ring structures, making it easier to adapt the network layout to the physical factory floor.
- Media Redundancy support: The dual-port configuration supports redundant media paths, minimizing network downtime if a single cable or segment gets damaged.
- Plug-and-Play Integration: Seamlessly integrates into existing Allen-Bradley ControlNet networks without requiring complex software reconfiguration.
Product Applications
The 1786-RPTD is widely utilized in large-scale, distributed industrial automation systems, including:
- Long-Distance Plant Connectivity: Connecting separate control rooms, buildings, or remote I/O chassis that exceed the length limits of standard copper coax cable.
- High-EMI Environments: Deployments near high-voltage equipment, variable frequency drives (VFDs), or heavy welding machinery where copper cabling would suffer from noise interference.
- Hazardous Areas: Utilizing fiber optics through hazardous zones where electrical sparks must be completely prevented.
- Heavy Industries: Commonly found in oil & gas, water/wastewater treatment, automotive assembly, and steel manufacturing plants.
Important Considerations & Precautions (Notes)
⚠️ Important Installation & Usage Guidelines:
- Power Requirements: Ensure the module is powered by a clean, regulated power supply meeting Allen-Bradley specifications. Voltage fluctuations can cause network drops.
- Fiber Handling: Do not bend fiber optic cables beyond their minimum bend radius. Keep the optical connectors covered with dust caps when not connected to prevent contamination.
- Module Matching: The 1786-RPTD acts as a base/adapter. Ensure that any attached repeater modules (e.g., 1786-RPFM for fiber, 1786-RPS for copper) are compatible and correctly seated.
- Network Scheduling: While repeaters extend physical distance, they introduce minor propagation delays. Ensure your ControlNet network is rescheduled via RSNetWorx to account for the total network media length and repeater count.
- Environment: Maintain proper enclosure cooling to ensure the ambient temperature around the module does not exceed 60^\circC.
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Colour：new Warranty: 12 months
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