The Schneider Electric 490NRP25400 Fiber Optic Repeater is a specialized network communication component designed to support Modicon Modbus Plus (MB+) industrial automation systems. The device operates at nominal power levels of 115/230 VAC or 24 VDC, accommodating various power requirements in different environments.Connectivity is achieved through a 9-pin "D" connector for electrical interface, while optical connections utilize ST-type connectors. The temperature range for operational success extends from 0 to 60° C, with storage capabilities reaching as low as -40° C to as high as +85° C, ensuring reliability in diverse environmental conditions.The 490NRP25400 repeater extends Modbus Plus communication distances by regenerating and retransmitting signals over fiber optic media, enabling reliable data transmission across long runs and harsh environments. This repeater enhances network integrity and performance in large or segmented control systems, ensuring consistent communication between Modicon PLCs, I/O modules, and other field devices.
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Technical specifications
Model: 490NRP25400
Function: Modbus Plus fiber optic repeater / line/drop interface
Network Protocol: Modbus Plus (MB+) at 1 Mbit/sec data rate
Electrical Interface: Modbus Plus connection via 9‑pin "D" connector
Optical Interface: Fiber optic transceiver ports (typically ST‑type)
Transmission Medium: Fiber optic cable supporting long‑distance links
Power (Nominal): 115/230 VAC, 24 VDC
Mounting: Panel or shelf mount inside control cabinets
Medium: Fiber Optic
Data Rate: 1 Mbit/sec for Modbus Plus with Bi-Phase S encoded data
Operating Temperature: 0 to 60° C
Storage Temperature: -40 to +85° C
Data Rate: 1 Mbit/sec
Key Features and Benefits
- Reliable Long‑Distance Communication---The Schneider Electric 490NRP25400 repeater uses fiber optic technology to carry Modbus Plus signals over distances far beyond standard copper cable limits, improving network reach and performance.
- Signal Regeneration & Isolation---By regenerating MB+ tokens and data, this repeater helps maintain clean communication segments and isolates electrical noise - ideal for industrial environments with high interference.
- Modicon System Compatibility---Engineered specifically for Modicon systems, this fiber optic repeater is fully compatible with legacy and current Modbus Plus networks, making it useful for expansions, segment extensions, or system modernizations.
- Industrial‑Grade Durability---Built to withstand industrial operating conditions, it supports consistent performance in manufacturing, process control, and mission‑critical automation applications.
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