General Information

• Brand: Westinghouse (now part of Emerson Electric)
• Model: 1C31181G02
• Product Type: Remote I/O Module (RIM)
• System Compatibility: Exclusively for Emerson Ovation DCS (supports Ovation 1.x to 5.x software versions).
• Core Function: Bridges the gap between field instruments (sensors, actuators) and the Ovation controller, facilitating real-time data acquisition and control in distributed environments .

Technical Specifications

1. Communication

• Protocol:
  • Primary: RS-485 (19200 bps) for point-to-point or multi-drop connections .
  • Optional: Ethernet TCP/IP (for advanced network integration) .
• Interfaces:
  • RS-485 ports with surge protection.
  • Ethernet RJ45 port (if Ethernet variant is selected).

2. Power Supply

• Input Voltage:
  • Standard: 220 VAC (nominal) with ±10% tolerance (198–242 VAC) .
  • Note: Some sources suggest compatibility with 24–48 VDC, but this likely refers to auxiliary power for field devices rather than the module itself .
• Power Consumption: ≤5 W (at full load).

3. I/O Configuration

• Channels:
  • Digital: 8 inputs / 8 outputs (dry contact or 24 VDC) .
  • Analog: Optional support for 4–20 mA or 0–10 VDC (variant-dependent).
• Signal Isolation: 500 VDC isolation between I/O channels and power supply.

4. Physical & Environmental

• Dimensions:
  • Module: 100 mm (W) × 50 mm (H) × 30 mm (D) [3.9” × 2.0” × 1.2”] .
  • Weight: ~0.2 kg (0.44 lbs).
• Mounting: DIN rail or panel-mounted within Ovation cabinets.
• Operating Temperature: -20°C to +60°C (-4°F to 140°F) .
• Humidity: 5%–95% RH (non-condensing).
• Shock/Vibration Resistance: Compliant with IEC 60068-2-6 (vibration) and IEC 60068-2-27 (shock).

5. Safety & Compliance

• Certifications: CE (EMC), RoHS compliant (based on reseller listings; official confirmation pending) .
• Enclosure Rating: IP20 (indoor use) or IP65 (weatherproof variant available) .

Key Features

1. Modular Design:
   • Configurable I/O types (digital/analog) to adapt to diverse application needs .
   • Supports hot-swapping for maintenance without system downtime.
2. Diagnostic Capabilities:
   • Built-in LED indicators for power status, communication activity, and I/O faults.
   • Self-diagnostic routines (BIST) to monitor hardware health .
3. Scalability:
   • Connects up to 32 remote I/O modules per network segment.
   • Expandable via Ovation base units (e.g., 1C31223G01) for field termination .
4. Redundancy:
   • Optional dual-channel communication for fault tolerance (Ethernet variant only).

Applications

• Power Generation: Monitoring boiler combustion parameters, turbine speed, and generator status.
• Manufacturing: Controlling conveyor belts, robotic arms, and quality inspection systems.
• Water/Wastewater: Managing pump stations, chemical dosing, and filtration processes.
• Oil & Gas: Supervising pipeline pressure, valve actuators, and wellhead sensors .

Documentation & Support

• Technical Manual: Available via Emerson’s official support portal (document ID: TBD).
• Software Configuration: Requires Ovation Configuration Studio (v4.0+) for parameter setup and network mapping .
• Spare Parts: Compatible with Emerson/Ovation replacement kits (e.g., 1C31181G02-KIT).

Ordering Information

• Base Model: 1C31181G02 (standard RS-485 module).
• Variants:
  • 1C31181G02-ET (Ethernet-enabled version).
  • 1C31181G02-EX (explosion-proof variant for hazardous environments).
• Accessories:
  • RS-485 terminators (1C31234G01).
  • Isolated power supply (220 VAC to 24 VDC converter).
• Lead Time: 4–6 weeks (standard orders); 2–3 weeks for urgent spares.