Description
Description
The Schneider Electric 490NRP25300 is a dedicated fiber optic repeater module engineered for the Modicon Quantum and Modicon Premium automation ecosystems. This unit serves as a high-reliability bridge between standard Modbus Plus (MB+) copper-based networks and fiber optic media. By converting RS-485 signals to optical signals, the module facilitates secure, long-range communication while providing essential galvanic isolation. It is particularly effective in environments prone to high electromagnetic interference (EMI) or where ground potential differences pose a risk to sensitive control hardware, such as in power generation facilities, chemical processing plants, and large-scale industrial infrastructure.
Features
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Signal Conversion: Transparently converts Modbus Plus copper signals to fiber optic, extending network reach up to 3 km.
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Galvanic Isolation: Provides total electrical isolation to protect the control bus from surges and ground loops.
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Robust Connectivity: Equipped with one Sub-D 9-pin copper port and two ST-style fiber optic ports (TX/RX).
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Diagnostic Monitoring: Integrated LED indicators provide real-time status for power, fiber link activity, and copper network traffic.
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Deterministic Performance: Maintains the timing requirements of the Modbus Plus protocol with minimal propagation delay.
Technical Specifications
| Model |
490NRP25300 |
| Brand |
Schneider Electric |
| Module Type |
Modbus Plus Fiber Optic Repeater |
| Fiber Compatibility |
Multimode 62.5/125 um or 50/125 um |
| Wavelength |
820 nm |
| Connectors |
1 x Sub-D 9 (Copper), 2 x ST (Fiber) |
| Input Voltage |
24 VDC (19.2 to 30 VDC range) |
| Current Consumption |
200 mA |
| Operating Temperature |
0 to 60 deg C |
| Storage Temperature |
-40 to +85 deg C |
Installation Guidelines
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Mounting: Designed for installation within a standard industrial enclosure. Ensure adequate clearance for airflow around the module.
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Power Supply: Requires a stable 24 VDC external power source. Verify polarity before connection to prevent damage.
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Fiber Handling: Use caution when handling fiber optic cables; ensure ST connectors are clean and free of dust before insertion. Avoid sharp bends in fiber cabling to maintain signal integrity.
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Grounding: Ensure the module chassis is properly grounded to the enclosure backplane to minimize noise susceptibility.
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Safety: Always power down the system before connecting or disconnecting the Modbus Plus cable or power input terminals.
Compliance and Certifications
The 490NRP25300 meets international industrial standards, including UL, CSA, CE, and FM Class I Div 2, ensuring its suitability for use in hazardous and demanding industrial locations.
FAQ
Q: What is the maximum distance this repeater can support?
A: The 490NRP25300 can extend the Modbus Plus network up to 3 km, depending on the quality of the fiber optic cable used.
Q: Is this module compatible with Modicon Premium PLCs?
A: Yes, this repeater is designed to support both Modicon Quantum and Modicon Premium automation platforms.
Q: Does this module require external power?
A: Yes, it requires an external 24 VDC power supply (operating range 19.2 to 30 VDC).
