Technical Parameters
- Part Number: SDV144-S33/PRP
- Model Suffix: S4 (Standard type with G3 conformal coating)
- Manufacturer: Yokogawa
- Number of Channels: 16-channel, isolated
- Input Voltage: 24 VDC
- Input Current: 6.0 mA per channel (at 24 VDC)
- Safety Integrity Level: SIL3 certified
- Interface: Pressure Clamp Terminal or KS Cable interface
Product Description
The Yokogawa SDV144-S33/PRP is a high-reliability digital input module designed for use within the ProSafe-RS safety instrumented system. This module is engineered to detect the “On/Off” states of field devices such as emergency push buttons and pressure switches. The “PRP” designation indicates that the module supports dual-redundant configurations, ensuring continuous safety monitoring even in the event of a single hardware failure. With its S4 suffix, the unit is equipped with enhanced environmental protection, making it suitable for deployment in harsh industrial conditions.
Application Areas
- Emergency Shutdown (ESD): Monitoring critical stop signals in oil, gas, and petrochemical plants.
- Fire and Gas (F&G): Processing signals from flame and smoke detectors for rapid response.
- Burner Management Systems (BMS): Safe monitoring of valve positions and fuel switch status.
- High-Pressure Protection: Integration with pressure sensors for safety-critical interlocks in chemical reactors.
Product Specifications
- Weight: 0.35 kg
- Dimensions: 130 mm x 130 mm x 35 mm
- Country of Origin: Japan
- Operating Temperature: -20°C to +70°C (Storage) / 0°C to +60°C (Operation)
Operating Precautions
- Redundancy Setup: For dual-redundant operation, ensure both modules are installed in the designated paired slots of the safety node.
- Input Polarity: Strictly follow the wiring diagram to ensure 24VDC polarity is correct, as reversed polarity may result in false “Off” signals.
- G3 Coating Care: Avoid scratching the PCB surface during installation, as the S4-grade conformal coating is essential for corrosion resistance in sulfurous environments.
- Hot Swapping: Ensure the system is in a “Maintenance” or “Bypass” state if replacing the module while the process is live, following all site safety protocols.
Recommended Similar Products
| Model Number | Product Description | System Series |
|---|---|---|
| SDV541-S33 | Digital Output Module (16-ch) | ProSafe-RS |
| SAV144-S33 | Analog Input Module | ProSafe-RS |
| SDV144-S53 | Digital Input Module (With Pulse) | ProSafe-RS |
| SSC60S | Safety Control Unit (Duplex) | ProSafe-RS |
| SBA433 | Terminal Board for SDV144 | ProSafe-RS |
