General Information

• Brand: Westinghouse (Emerson Electric)
• Model: 1C31206G01
• Product Type: Remote I/O Node Controller (supports modular expansion of digital/analog I/O modules)
• System Compatibility: Exclusive to Emerson Ovation DCS (versions 3.x to 6.x), integrating with Ovation controllers and communication networks.
• Core Function: Acts as a master unit for remote I/O racks, facilitating real-time data exchange between field devices (sensors, actuators) and the central DCS. Supports redundant communication paths for high availability.

Technical Specifications (Consolidated)

1. Hardware Architecture

• Form Factor: 19-inch rack-mounted (3U height), compatible with Ovation standard cabinets.
• Physical Dimensions:
  • Base Unit: ~28.6 cm (H) × 7.0 cm (W) × 12.7 cm (D) [11.3” × 2.8” × 5.0”] .
  • Weight: ~0.6 kg (1.32 lbs) .
• Slots: Supports up to 4 I/O modules (e.g., digital input/output, analog input/output) in a single base unit .

2. Power Requirements

• Backplane Power: 5V DC (supplied by Ovation rack), typical current draw: 0.5A (shared across modules) .
• External Power: 24V DC (for I/O modules and communication), via terminal block; surge-protected with reverse polarity guard .

3. Communication

• Protocol: Ovation proprietary protocol (via fiber optic or copper cabling); supports redundancy (dual-ring topology).
• Data Rate: 100 Mbps (full-duplex) .
• Distance: Up to 10 km (6.2 miles) using fiber optic media .

4. Environmental Specifications

• Operating Temperature: 0°C to 55°C (32°F to 131°F) .
• Storage Temperature: -40°C to 85°C (-40°F to 185°F).
• Humidity: 5%–95% RH (non-condensing) .
• Vibration/Shock: Compliant with IEC 60068-2-6 (5g, 10–500 Hz) and IEC 60068-2-27 (15g, 11ms) .
• Protection Class: IP20 (front panel) for indoor use; optional IP65 enclosure available for harsh environments .

5. Certifications

• CE: Compliant with EN 61326-1 (EMC) and EN 61010-1 (safety) .
• UL/CSA: Pending confirmation (consult Emerson for regional certifications).
• Hazardous Locations: Not rated for explosive atmospheres; use in non-hazardous areas only .

Key Features

1. Modular Expansion:
   • Supports up to 4 I/O modules per base unit (e.g., 16-channel digital input, 8-channel analog output) .
   • Compatible with personality modules (e.g., 1C31125G01 for relay output integration) .
2. Redundancy:
   • Dual power inputs and communication channels ensure continuous operation during component failures.
   • Automatic failover within 200 ms .
3. Diagnostics:
   • Built-in self-test (BIST) for hardware integrity checks.
   • LED indicators for power, communication, and module status .
   • Fault alerts transmitted to Ovation controller via the DCS network.
4. Hot-Swap Capability:
   • Modules can be replaced without powering down the system, minimizing downtime .
5. Fieldbus Integration:
   • Seamless connectivity with HART, Profibus DP, and DeviceNet field devices via optional communication modules .

Applications

• Power Generation: Monitoring turbine vibration sensors, boiler feedwater valve positions, and generator breaker status.
• Oil & Gas: Controlling remote valve actuators, monitoring pressure transmitters, and integrating with SCADA systems.
• Water/Wastewater: Managing pump stations, filtration systems, and chemical dosing processes in distributed plants.
• Manufacturing: Coordinating robotic arms, conveyor belts, and quality control sensors across multiple production lines.

Documentation & Support

• Technical Manual: Emerson Ovation 1C31206G01 Remote I/O Node Controller Guide (Document No. 1C31206G01-01), available via Emerson’s official support portal.
• Software Tools: Configured using Ovation Configuration Studio (v5.0+), enabling I/O mapping, redundancy setup, and firmware updates.
• Spare Parts:
  • Base unit: 1C31206G01
  • Personality modules: 1C31125G01 (relay interface), 1C31224G01 (analog input) .
  • Power supply: 1C31227G01 (24V DC isolated) .

Ordering Information

• Base Model: 1C31206G01 (standard IP20 enclosure).
• Optional Accessories:
  • IP65 enclosure kit (1C31206G01-EXT).
  • Fiber optic transceiver module (1C31206G01-FO).
• Lead Time: 4–6 weeks (standard); 2 weeks for urgent orders via Emerson’s authorized distributors.

Important Notes

1. Discrepancies in Specifications:
   • Some sources describe this as a "Media Attachment Unit" or "Master-Connecting Unit," likely referencing variant configurations. Always verify with Emerson’s official documentation.
   • Voltage ratings (24V DC vs. 48V DC) and I/O channel counts may vary by personality module.
2. Critical Applications:
   • For hazardous environments, request explosion-proof variants (e.g., 1C31206G01-EX) from Emerson.
   • Firmware updates must be performed using Ovation Configuration Studio to ensure compatibility with the DCS.
3. Support Channels:
   • Emerson Process Automation: +1-800-EMERSON (North America) or local regional offices.
   • Distributor Network: Use Emerson’s online portal to locate certified Ovation partners.