Schneider Electric 490NRP95400 – Modicon Quantum PLC Remote I/O Head | Modicon Quantum Platform
Engineering Background
The Schneider Electric 490NRP95400 is a Remote I/O Head module designed for the Modicon Quantum PLC platform — one of the most widely deployed process-control architectures in heavy industry, oil & gas, water treatment, and power generation. The Quantum series is engineered to IEC 61131-3 standards and is recognized globally for its deterministic scan times, hot-standby redundancy capability, and robust EMC immunity.
Product Positioning
The 490NRP95400 serves as the communication and coordination node for Quantum Remote I/O drops, enabling distributed I/O expansion over the Modbus Plus or RIO coaxial cable network. It is the critical link between the main Quantum CPU rack and remote field I/O racks, allowing engineers to extend control reach across large plant footprints without sacrificing scan-cycle integrity or diagnostic visibility.
Complete Technical Specifications
- Part Number / SKU: 490NRP95400
- Manufacturer: Schneider Electric (Modicon)
- Series / Platform: Modicon Quantum
- Module Type: Remote I/O Head (RIO Drop Head)
- Network Protocol: Modbus Plus / Modicon RIO Coaxial
- Backplane Compatibility: Modicon Quantum I/O Rack (140 series)
- Power Supply: Supplied via Quantum I/O rack backplane
- Operating Temperature: 0°C to +60°C (32°F to 140°F)
- Storage Temperature: -40°C to +85°C
- Relative Humidity: 5% to 95% non-condensing
- Vibration Resistance: IEC 60068-2-6
- Shock Resistance: IEC 60068-2-27
- EMC Compliance: CE, UL, CSA
- Country of Origin: China (CN)
- Weight: ~100 g
- Dimensions: Standard Quantum single-slot module form factor
Proven Application Environments
- Oil & Gas upstream/downstream process control
- Water and wastewater treatment SCADA systems
- Power generation and substation automation
- Chemical and petrochemical plant DCS integration
- Automotive and heavy manufacturing assembly lines
- Mining and minerals processing facilities
- Large-scale building management and HVAC control
Engineering Advantages
- Distributed Architecture: Extends I/O capacity across remote drops without additional CPUs, reducing system cost and complexity.
- Deterministic Communication: RIO coaxial network delivers fixed, predictable scan-cycle updates critical for process-safety applications.
- Hot-Standby Compatible: Fully supported in Quantum Hot Standby redundancy configurations for high-availability systems.
- Plug-and-Play Replacement: Direct drop-in replacement for existing 490NRP95400 installations — no firmware changes or re-engineering required.
- Diagnostic Transparency: Onboard LED status indicators provide immediate visual fault isolation at the drop level.
- Wide Environmental Tolerance: Rated for harsh industrial environments with full CE/UL/CSA certification.
System Architecture & Signal Flow
In a Modicon Quantum RIO architecture, the main CPU rack communicates via a coaxial RIO cable to each remote drop. The 490NRP95400 Remote I/O Head occupies slot 0 of the remote rack and acts as the drop controller — it receives I/O scan commands from the CPU, coordinates local I/O module reads/writes across the backplane, and returns status data upstream. Up to 31 remote drops can be chained on a single RIO cable segment, with each drop supporting up to 16 I/O modules. This architecture enables plant-wide distributed control with a single unified programming environment (Unity Pro / Control Expert).
Sourcing & Quality Verification
- OEM Authenticity: All units sourced through verified industrial supply channels. Genuine Schneider Electric labeling, date codes, and firmware revisions confirmed prior to shipment.
- Functional Testing: Each module undergoes power-on and communication handshake verification before dispatch.
- Packaging: Anti-static ESD packaging with original or equivalent protective foam insert.
- Condition: New surplus or refurbished-to-spec units available — condition specified at time of quotation.
- Traceability: Serial number and batch documentation available upon request for regulated industries.
Procurement Process
- Submit your RFQ via Konmask.com or email support@konmask.com.
- Receive a formal quotation with lead time, condition, and warranty terms within 24 business hours.
- Confirm purchase order — payment via T/T, PayPal, or approved credit terms.
- Module ships with full documentation package (datasheet, test report, packing list).
- Post-delivery technical support available for integration and commissioning queries.
Technical FAQ
Q: Is the 490NRP95400 compatible with Unity Pro / EcoStruxure Control Expert?
A: Yes. The Modicon Quantum platform is fully supported in EcoStruxure Control Expert (formerly Unity Pro). The 490NRP95400 RIO head is recognized natively in the hardware catalog.
Q: Can this module be used in a Hot Standby (HSBY) configuration?
A: Yes. The 490NRP95400 is compatible with Quantum Hot Standby CPU pairs (e.g., 140CPU67160) and supports automatic failover without I/O scan interruption.
Q: What is the maximum cable length for the RIO coaxial network?
A: The Modicon RIO coaxial cable supports up to 4,572 m (15,000 ft) total network length with appropriate repeaters, per Schneider Electric RIO network design guidelines.
Q: Do you provide a warranty?
A: Yes. All units carry a minimum 90-day functional warranty. Extended warranty options are available — contact us for details.
Q: Can I request a datasheet or wiring diagram?
A: Yes. Full Schneider Electric technical documentation is available upon request. Contact support@konmask.com.
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