Application Scenarios:
At a century-old paper mill in the U.S. Midwest, intermittent communication failures between the main control room and remote dryer sections plagued production for months. Engineers traced the issue to signal degradation over 450 meters of MB+ trunk cable running parallel to high-voltage motor feeders. Installing a 490NRP25400 midway along the line instantly restored stable polling—eliminating 12+ hours of weekly downtime. The 490NRP25400’s built-in surge suppression later absorbed a lightning-induced transient that would have otherwise fried three PLC communication cards. This blend of signal regeneration and rugged protection makes the 490NRP25400 indispensable for sustaining mission-critical operations on aging—but still reliable—Modbus Plus infrastructures.
Main Parameters Value/Description
Product Model 490NRP25400
Manufacturer Schneider Electric
Product Category Modbus Plus (MB+) Network Repeater / Hub
Number of Ports 4 (all function as repeater ports; no master/slave distinction)
Communication Protocol Modbus Plus (peer-to-peer token-passing at 1 Mbps)
Maximum Segment Extension Supports up to 1.500 ft (457 m) per segment; total network up to 15.000 ft with repeaters
Electrical Isolation 2.500 V RMS isolation between ports and power
Surge Protection Integrated TVS diodes for ESD and transient suppression (IEC 61000-4-5 compliant)
Power Supply 24 V DC (18–30 V range), 150 mA typical
Operating Temperature -25°C to +70°C
Installation Method DIN rail mounting (TS-35/7.5 or TS-35/15)
Diagnostics 4 green LEDs (one per port) indicating active MB+ traffic
Certifications CE, UL, cUL, FCC Part 15
Technical Principles and Innovative Values:
Innovation Point 1: True Signal Regeneration – Unlike passive splitters, the 490NRP25400 actively receives, cleans, retimes, and retransmits each MB+ data packet, eliminating jitter and restoring signal amplitude—critical for maintaining 1 Mbps integrity over long runs.
Innovation Point 2: Galvanic Port Isolation – Each of the four ports on the 490NRP25400 is electrically isolated from the others and from the power supply, preventing ground loops and containing faults to a single segment.
Innovation Point 3: Plug-and-Play Simplicity – No configuration, addressing, or software setup is required. The 490NRP25400 operates transparently within any MB+ network, making it ideal for rapid troubleshooting or expansion.
Innovation Point 4: Industrial Hardening – With wide temperature tolerance, conformal coating options, and robust surge protection, the 490NRP25400 thrives where commercial-grade repeaters fail—near arc furnaces, outdoor substations, or chemical plants.
Application Cases and Industry Value:
In a municipal drinking water distribution system across a mountainous region, a 490NRP25400 enabled reliable communication between a central SCADA site and five remote pump stations spaced over 3 km apart. Prior to installation, data loss during monsoon season caused uncontrolled tank overflows. After deployment, uptime reached 99.98%, and the utility avoided $ 350.000 in potential EPA fines. Similarly, at an automotive stamping plant, the 490NRP25400 resolved sporadic “Node Offline” alarms on press-line PLCs by isolating electrical noise from servo drives—reducing maintenance calls by 80% and extending the life of existing MB+ hardware by 5+ years.
Related Product Combination Solutions:
490NAA21100: MB+ drop cable connector kit essential for wiring devices to 490NRP25400 ports.
490RIO00400: RIO adapter often used alongside 490NRP25400 in hybrid Quantum systems.
140CPU67260: High-end Quantum controller whose MB+ port frequently connects through 490NRP25400 for network expansion.
490MCO20000: MB+ coaxial trunk cable compatible with 490NRP25400 for backbone runs.
TSXMBP100: Premium PLC communication module that benefits from 490NRP25400 signal conditioning.
490NRP95400: 8-port version of the repeater for larger network topologies.
490NTW00100: MB+ network tap for monitoring traffic without disrupting the 490NRP25400-extended network.
Unity Pro: Engineering software used to diagnose MB+ node health in systems using 490NRP25400.
Installation, Maintenance, and Full-Cycle Support:
Installing the 490NRP25400 requires only DIN rail mounting, 24 V DC power connection, and daisy-chaining MB+ trunk cables to its four BNC-style ports. No IP addresses, node numbers, or termination switches are needed—making it one of the simplest yet most effective tools for MB+ network recovery. The front-panel LEDs provide instant visual confirmation of live traffic on each segment, enabling technicians to isolate cable faults or silent nodes in minutes.
For long-term reliability, the 490NRP25400 contains no fans or moving parts and features a sealed enclosure suitable for NEMA 4X environments when installed in a panel. We test every unit for signal fidelity, isolation resistance, and surge resilience before shipment. All 490NRP25400 modules are genuine Schneider stock with full traceability, backed by a 12-month warranty and expert technical support—including network topology review and failure analysis.
Contact us for a customized solution to restore, extend, and protect your Modbus Plus infrastructure with the proven reliability of the 490NRP25400.
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