Description
Product Name: 1747-RL401 Allen Braley Input module
Product details:
The Allen-Bradley 1747-RL401 is a specialized accessory within the SLC 500 family. Specifically, it is a Link Coupler Cable used to connect SLC 500 processors and peripheral devices to a DH-485 network.
1. Product Description
The 1747-RL401 is a high-quality, shielded cable designed for industrial environments. It typically serves as the physical bridge between an SLC 500 controller (or a 1747-AIC Link Coupler) and other devices on a DH-485 communication link. It ensures stable data transmission by protecting the signal from electromagnetic interference (EMI).
2. Technical Specifications
While it is “just a cable,” its specifications are critical for network integrity:
| Parameter | Specification |
| Model Number | 1747-RL401 |
| Connection Type | RJ-45 to RJ-45 (8-pin) |
| Cable Length | 1 foot (approx. 30 cm / 0.3 meters) |
| Protocol Support | DH-485 |
| Cable Type | Shielded Twisted Pair (STP) |
| Compatibility | SLC 500, 1747-AIC, 1747-PIC, and Fixed Controllers |
3. Product Advantages
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Plug-and-Play Reliability: Pre-terminated connectors eliminate the risk of wiring errors that often occur with manual terminal block connections.
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Industrial Grade Shielding: Designed to operate near high-voltage equipment without signal degradation or data loss.
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Compact Design: The short 1-foot length is ideal for “daisy-chaining” modules within a single control cabinet, reducing cable clutter.
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Gold-Plated Contacts: Ensures long-term corrosion resistance and high-conductivity connections.
4. Key Considerations & Precautions
Note: Proper installation is vital for network stability.
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Avoid Tight Bends: Do not exceed the minimum bend radius of the cable, as this can damage the internal shielding and cause intermittent communication faults.
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DH-485 Limitations: Remember that DH-485 is a token-passing network. Ensure that all nodes are correctly addressed and that the total cable length of the entire network segment does not exceed 1,219 meters (4,000 feet).
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Voltage Isolation: Ensure the cable is not routed directly alongside high-power AC lines to minimize noise.
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Port Sensitivity: RJ-45 ports on SLC 500 hardware are for DH-485 only. Never plug this cable into a standard Ethernet port (like a PC or router), as the pinouts and voltages are incompatible and could cause hardware damage.
5. Product Applications
The 1747-RL401 is primarily used in the following scenarios:
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Inter-Controller Communication: Connecting multiple SLC 500/01, /02, or /03 processors together for data sharing.
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HMI Integration: Connecting an SLC 500 processor to a PanelView terminal via a 1747-AIC link coupler.
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Programming Interface: Linking a PC (via a 1747-PIC or 1747-UIC converter) to the SLC network for logic uploads and downloads.
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Network Expansion: Daisy-chaining multiple 1747-AIC Link Couplers to extend the DH-485 network across a factory floor.
Advantages: Foxboro, OVATION, TRICONEX, Allen-Bradley, ABB, Motorola, Siemens Moore, Ge Fanuc, Woodward, Bently Nevada and other major import brands!
We have the same series of models in stock. If you don’t find the model you need, please contact us and we will provide you with an official quotation！
Colour：new Warranty: 12 months
Lead Time：3-day working day Country of origin: Sweden
Price: Please contact us Product weight：0.515kg
Shipping Port: Xiamen, China
Payment: Bank of Chicago, Bank of Singapore
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