Allen-Bradley 1786-RPFM ControlNet Repeater Mid-Range Fiber Optic Module

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Allen-Bradley 1786-RPFM ControlNet Repeater Mid-Range Fiber Optic Module Product Information

Product Description

Detailed Parameters

• Network Protocol: Fully compatible with ControlNet protocol, supports CTS (ControlNet Time Synchronization), data transmission rate 5Mbps.
• Fiber Optic Interfaces: 2 ST-type multimode fiber interfaces, supporting 62.5/125μm or 50/125μm multimode fibers, emission wavelength 850nm.
• Transmission Distance: Maximum transmission distance 1km with 62.5/125μm multimode fiber; maximum 2km with 50/125μm multimode fiber.
• Repeater Capacity: A single module can extend the network distance to a maximum of 2km; up to 5 repeaters can be cascaded in a ControlNet network, with a total transmission distance of up to 10km.
• Signal Regeneration: Equipped with signal shaping and regeneration functions, receiving optical power range -30dBm~-14dBm, transmitting optical power -16dBm~-10dBm.
• Operating Environment: Operating temperature 0℃~60℃, storage temperature -40℃~85℃, relative humidity 5%~95% (non-condensing), protection class IP20 (suitable for control cabinet installation).
• Power Requirements: 24V DC±10% power supply, power consumption ≤5W, with reverse connection protection.
• Dimensions: Width×height×depth approximately 127mm×102mm×152mm, DIN rail or panel mounted, compact structure.
• Certification Standards: UL 508, CSA C22.2 No.14, CE certified, compliant with IEC 61131-2 and EN 50155 industrial standards.

Advantages and Features

• Long-Distance Fiber Transmission: Supports maximum 2km transmission distance with multimode fiber, significantly expanding ControlNet network coverage compared to coaxial cables (maximum 100m), suitable for cross-area communication in large factories.
• Strong Anti-Electromagnetic Interference: Fiber optic transmission completely isolates electromagnetic interference, maintaining stable communication in strong interference environments such as motors, frequency converters, and arc welding equipment, avoiding signal packet loss or interruption.
• Signal Regeneration and Enhancement: Solves signal attenuation in long-distance transmission through relay amplification and signal shaping, ensuring communication quality of end-of-network devices and improving the reliability of the entire ControlNet network.
• Flexible Network Topology: Supports bus, star and other network topologies, can act as a network segmentation node to isolate faulty network segments and prevent single node failures from spreading to the entire network.
• Industrial-Grade Stable Operation: Wide temperature range and rugged housing design adapt to dusty, vibrating industrial environments, with mean time between failures (MTBF) ≥10⁶ hours, reducing network maintenance costs.

Application Fields

• Large Industrial Plant Network Expansion: In large plants such as automobile factories and metallurgical plants, connects ControlNet networks of different workshops, extends transmission distance through fiber optic repeaters, and realizes collaborative control of cross-area equipment.
• Communication in Strong Electromagnetic Interference Environments: In strong electromagnetic interference areas such as steel rolling mills and arc furnaces, replaces traditional coaxial cable transmission, builds stable ControlNet communication links through fiber optic repeaters, ensuring data interaction between PLC and field devices.
• Distributed Control Systems (DCS): In DCS systems of chemical and petroleum refineries, connects field control stations with central control rooms, utilizing the corrosion resistance of fiber optic transmission to adapt to dusty and chemical gas-rich plant environments.
• Cross-Building Network Connection: Used to connect ControlNet networks of workshops and office buildings, with fiber optics passing through walls or underground pipelines, realizing data exchange between management systems and production sites without being affected by ground electromagnetic environments.
• Remote I/O Station Connection: In open areas such as mines and ports, connects remote I/O stations to the main ControlNet network, extends distance through repeaters, supporting remote monitoring and control of large equipment.

The structure and details of the product：

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