Schneider Electric 140CRA31200 – RIO Drop Cable Adapter | Modicon Quantum Platform
Engineering Background
The Modicon Quantum series represents Schneider Electric’s flagship PLC platform for heavy industrial and process automation. Designed for mission-critical environments, Quantum controllers are deployed globally in oil & gas, power generation, water treatment, and advanced manufacturing. The 140CRA31200 is a dedicated Remote I/O (RIO) drop cable adapter that enables distributed I/O expansion over the Quantum RIO coaxial cable network, allowing engineers to extend control reach without compromising determinism or signal integrity.
Product Positioning
The 140CRA31200 serves as the physical and electrical interface between the Quantum RIO coaxial trunk cable and individual I/O drop assemblies. It is the essential connectivity component for any Quantum RIO distributed architecture, ensuring reliable data transmission between the main rack and remote I/O drops at distances up to 3,000 meters. Procurement engineers specifying Quantum RIO expansions will find this adapter indispensable for both new installations and legacy system maintenance.
Complete Technical Specifications
- Part Number / SKU: 140CRA31200
- Manufacturer: Schneider Electric (Modicon)
- Series / Platform: Modicon Quantum
- Module Type: RIO Drop Cable Adapter
- Communication Protocol: Modicon RIO (Remote I/O) Coaxial Network
- Network Topology: Trunk-and-drop coaxial bus
- Max RIO Network Distance: Up to 3,000 m (9,843 ft) total trunk length
- Drop Cable Length: Compatible with standard Quantum RIO drop cables
- Connector Type: BNC coaxial (trunk); terminal block (drop side)
- Supply Voltage: Powered via backplane (no external power required)
- 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 compliant
- Shock Resistance: IEC 60068-2-27 compliant
- Protection Rating: IP20 (panel-mount installation)
- Certifications: CE, UL, cUL, FM (Class I Div 2)
- Product Weight: 440 g
- Mounting: Modicon Quantum backplane slot
- Country of Origin: France / EU
Proven Application Environments
- Oil & Gas: Offshore platform DCS/PLC distributed I/O expansion, SCADA remote terminal units
- Power Generation: Turbine control, substation automation, load management systems
- Water & Wastewater: Pump station remote monitoring, treatment plant distributed control
- Automotive Manufacturing: Assembly line PLC networks, robotic cell I/O distribution
- Chemical & Petrochemical: Hazardous area process control (Class I Div 2 rated)
- Building Automation: Large-scale HVAC and facility management systems
- Mining & Metals: Conveyor control, smelter process automation
Engineering Advantages
- Deterministic RIO Communication: Coaxial RIO bus delivers fixed-scan, deterministic I/O updates — critical for safety and process control applications.
- Long-Distance Reach: Supports trunk runs up to 3,000 m, enabling true plant-wide distributed I/O without signal degradation.
- Backward Compatibility: Fully compatible with existing Modicon Quantum RIO infrastructure — no firmware or software changes required for drop-in replacement.
- Robust Industrial Design: Rated for wide temperature ranges, vibration, and shock per IEC standards; suitable for harsh plant-floor environments.
- Simplified Maintenance: Hot-swap capable within Quantum architecture; minimizes downtime during module replacement.
- Hazardous Location Approval: FM Class I Division 2 certification supports deployment in explosive atmosphere zones.
System Architecture & Signal Flow
In a Modicon Quantum RIO network, the 984 or Quantum head-end controller communicates over a coaxial trunk cable managed by a Remote I/O Head Adapter (140CRA). The 140CRA31200 mounts in the Quantum backplane at each remote drop location, bridging the coaxial trunk to the local I/O modules. Signal flow is as follows:
Quantum CPU → RIO Head Adapter (140CRP) → Coaxial Trunk Cable → 140CRA31200 Drop Adapter → Local I/O Modules (140DAI / 140DAO / 140DDI / 140DDO, etc.)
Each drop can support up to 8 I/O modules. The 140CRA31200 handles all protocol conversion, timing synchronization, and data buffering between the trunk and the drop I/O bus, ensuring zero data loss under normal operating conditions.
Sourcing & Quality Verification
- Source: Sourced from authorized Schneider Electric distributors and verified industrial surplus channels.
- Inspection Protocol: Every unit undergoes visual inspection, label verification (part number, date code, country of origin), and functional continuity check prior to shipment.
- Authenticity: Holographic labels, Schneider Electric part markings, and CE/UL stamps verified against OEM reference standards.
- Condition: New (factory-sealed) or Refurbished (tested, cleaned, re-certified) — condition specified at time of order confirmation.
- Warranty: 12-month Konmask operational warranty covering manufacturing defects and functional failure.
Procurement Process
- Inquiry: Submit your BOM or part number via email to support@konmask.com or WhatsApp +86 198 5928 8691.
- Quote: Receive a formal quotation within 4 business hours including unit price, lead time, and shipping options.
- Order Confirmation: Purchase order or online checkout accepted. Proforma invoice issued for wire transfer payments.
- Quality Check & Dispatch: Unit inspected, photographed, and packed in anti-static ESD packaging before dispatch.
- Shipping: DHL / FedEx / UPS express available. Estimated delivery: 3–7 business days internationally.
- After-Sales: Technical support and warranty claims handled directly by Konmask engineering team.
Technical FAQ
Q: Is the 140CRA31200 compatible with Modicon 984 controllers?
A: Yes. The 140CRA31200 is compatible with both legacy Modicon 984 and current Quantum RIO networks using the same coaxial trunk infrastructure.
Q: Can this module be used as a hot-standby redundancy adapter?
A: No. The 140CRA31200 is a standard (non-redundant) RIO drop adapter. For redundant RIO drops, refer to the 140CRA93200 or equivalent redundancy-rated modules.
Q: What is the maximum number of drops per RIO network?
A: A single Quantum RIO network supports up to 31 drops (140CRA31200 units), each with up to 8 I/O modules.
Q: Does this module require any special configuration in Unity Pro / Control Expert?
A: The 140CRA31200 is auto-detected by the Quantum RIO head adapter. No special configuration is required beyond standard RIO network setup in Unity Pro (Control Expert).
Q: What is the lead time for this part?
A: In-stock units ship within 1–2 business days. Out-of-stock lead time is typically 5–15 business days depending on sourcing channel.
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