Description
WESTINGHOUSE 1C31234G01 is a high-performance mixed I/O expansion module for Emerson’s Ovation DCS, designed to extend switch signal collection and control capabilities in power, chemical, rail transit, and smart manufacturing sectors. WESTINGHOUSE 1C31234G01 features 16 input and 16 output channels (expandable to 32 each), supporting both dry/wet contact inputs and AC/DC relay outputs for versatile field device connectivity. WESTINGHOUSE 1C31234G01 delivers ultra-fast response with ≤1ms input detection and ≤2ms output action, ensuring timely execution of critical control logic. WESTINGHOUSE 1C31234G01 integrates 2500V AC channel isolation and 1500V AC power isolation, effectively suppressing electromagnetic interference in harsh industrial environments. WESTINGHOUSE 1C31234G01 supports hot-swappable installation and seamless integration with third-party PLCs, simplifying system upgrades and maintenance. WESTINGHOUSE 1C31234G01 holds IEC 61508 SIL 2 functional safety certification, meeting requirements for safety-critical applications.
Technical Parameters WESTINGHOUSE 1C31234G01
| Parameter Item | Parameter Value |
|---|---|
| Product Model | WESTINGHOUSE 1C31234G01 |
| Product Type | Mixed I/O expansion module (Ovation DCS) |
| I/O Configuration | 16 inputs + 16 outputs (expandable to 32 inputs/32 outputs) |
| Input Signal Type | Dry contact (passive), wet contact (12-48V DC active) |
| Output Signal Type | Relay contact (250V AC / 30V DC) |
| Response Time | Input: ≤1ms (rising edge detection); Output: ≤2ms (relay action) |
| Isolation Voltage | Channel-to-channel: ≥2500V AC; Input/output-to-power: ≥1500V AC |
| Output Load Capacity | 5A (resistive load); 2A (inductive load) |
| Communication Protocols | Modbus RTU (RS-485), Profibus-DP (optional), EtherNet/IP (optional) |
| Operating Voltage | 5-24V DC |
| Operating Temperature | -20°C to +60°C |
| Storage Temperature | -40°C to +85°C |
| Relative Humidity | 5% – 95% (non-condensing) |
| Power Consumption | 18W |
| Dimensions | 66mm (standard); Overall: 270mm×200mm×360mm |
| Weight | 0.2kg |
| Mounting Type | On-site installation; DIN rail compatible |
| Protection Functions | Overcurrent protection, overvoltage protection |
| Certifications | CE, UL, cUL, IEC 61131-2, IEC 61508 SIL 2, ATEX Zone 2 (optional) |
| Compatibility | Emerson Ovation DCS, DeltaV; Siemens S7-1200; Rockwell ControlLogix |
| MTBF | 150,000 hours |
| Warranty Period | 1 year |
Advantages and Features WESTINGHOUSE 1C31234G01
- Flexible Expansion: WESTINGHOUSE 1C31234G01’s scalable I/O capacity adapts to both small-scale control systems and large plant-wide deployments, eliminating the need for multiple modules.
- Dual Signal Compatibility: WESTINGHOUSE 1C31234G01 supports diverse input/output types, directly connecting to buttons, sensors, contactors, and alarms without additional converters.
- Fast & Reliable Response: WESTINGHOUSE 1C31234G01’s millisecond-level response ensures timely execution of safety interlocks and critical control sequences.
- Strong Anti-Interference: WESTINGHOUSE 1C31234G01’s multi-level isolation design maintains signal stability in high-EMI environments like welding workshops or substations.
- Safety & Compliance: WESTINGHOUSE 1C31234G01’s SIL 2 certification and explosion-proof option make it suitable for safety-critical applications such as chemical reactors or nuclear power auxiliary systems.
- Easy Maintenance: WESTINGHOUSE 1C31234G01’s hot-swappable design and LED status indicators reduce downtime during module replacement and fault troubleshooting.
Application Cases WESTINGHOUSE 1C31234G01
- Chemical Reactor Safety Interlock: A PVC plant used WESTINGHOUSE 1C31234G01 to monitor temperature/pressure switches and control feed valves. Its 0.5-second interlock response prevented overpressure risks, reducing safety incidents by 100%.
- Substation Auxiliary Control: An 110kV smart substation deployed WESTINGHOUSE 1C31234G01 to collect breaker status signals and control lighting/ventilation. Integration with SCADA via Modbus RTU improved operational efficiency by 40%.
- Metro Door Control System: A subway operator integrated WESTINGHOUSE 1C31234G01 to detect door closure and obstacle signals. Its Profibus-DP communication with the VCU reduced door-related delays by 60%.
- Automotive Flexible Production Line: A 零部件 factory utilized WESTINGHOUSE 1C31234G01 to manage 8 workstations. Its expandable I/O and quick 换型 capability shortened production line reconfiguration time from 2 hours to 15 minutes.
Competitor Comparison
| Feature | WESTINGHOUSE 1C31234G01 | WESTINGHOUSE 1C31235G01 (Basic I/O Module) | Siemens SM 323 (Mixed I/O Module) |
|---|---|---|---|
| I/O Expandability | Up to 32 inputs/32 outputs | Fixed 16 inputs/16 outputs | Up to 32 inputs/32 outputs |
| Response Time | Input ≤1ms; Output ≤2ms | Input ≤3ms; Output ≤5ms | Input ≤2ms; Output ≤3ms |
| Isolation Voltage | 2500V AC (channel); 1500V AC (power) | 1500V AC (channel); 1000V AC (power) | 2000V AC (channel); 1500V AC (power) |
| Safety Certification | IEC 61508 SIL 2 | None | IEC 61508 SIL 1 |
| Communication Protocols | Modbus/Profibus/EtherNet/IP | Modbus only | Profibus/EtherNet/IP |
| Hot-Swap Support | Yes | No | Yes |
| MTBF | 150,000 hours | 100,000 hours | 120,000 hours |
| Price Range | Mid-High | Mid | Mid-High |
Selection Suggestions
- Choose WESTINGHOUSE 1C31234G01 for safety-critical applications like chemical reactors or power systems, leveraging its SIL 2 certification and fast response.
- Prioritize WESTINGHOUSE 1C31234G01 for multi-protocol environments, as its flexible communication options simplify integration with mixed control systems.
- Select WESTINGHOUSE 1C31234G01 for scalable projects, thanks to its expandable I/O capacity and hot-swappable design that supports future system growth.
Precautions
- Ensure WESTINGHOUSE 1C31234G01’s operating voltage stays within 5-24V DC to avoid internal circuit damage.
- Follow wiring guidelines for input/output channels to maintain isolation performance and anti-interference capability.
- Do not exceed the rated load capacity of 5A (resistive) to prevent relay contact burnout.
- Use only certified expansion modules to ensure compatibility and maintain SIL 2 safety certification validity.
- Store WESTINGHOUSE 1C31234G01 in a dry, dust-free environment when not in use, avoiding extreme temperature fluctuations.

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Brand new✔ In stock ✔ Fast shipping✔
PLC : Allen Bradley , Siemens MOORE, GE FANUC , Schneider
DCS : ABB ,Honeywell, Invensys Triconex , Foxboro , Ovation,YOKOGAWA, Woodword, HIMA
TSI : Triconex , HIMA , Bently Nevada , ICS Triplex
Complete service we offer
Payment: T/T
Delivery: 1-2 days
Shipment: DHL UPS FedEx, etc
After-sales service: Yes, 24/7 hours
Email: sales@plcfcs.com
Phone:+86 15343416922
Wechat:+86 15343416922
PLC : Allen Bradley , Siemens MOORE, GE FANUC , Schneider
DCS : ABB ,Honeywell, Invensys Triconex , Foxboro , Ovation,YOKOGAWA, Woodword, HIMA
TSI : Triconex , HIMA , Bently Nevada , ICS Triplex
Complete service we offer
Payment: T/T
Delivery: 1-2 days
Shipment: DHL UPS FedEx, etc
After-sales service: Yes, 24/7 hours




Email: jiedong@sxrszdh.com
Phone / Wechat:+86 15340683922
Wechat:+86 15343416922