NEW YOKOGAWA SAI143-H53 S4 Analog Input Module

Product Parameters

• Model Number: SAI143-H53 S4
• Suffix Codes: H (With HART Communication), 5 (High-density), 3 (Standard type), S4 (Hardware Revision 4)
• Input Channels: 16-Channel, Isolated
• Signal Type: 4 to 20 mA DC
• System Compatibility: ProSafe-RS Safety Instrumented System
• Safety Integrity Level: SIL3 Certified (in redundant configuration)
• HART Support: HART 5/6/7 Pass-through
• Isolation Voltage: 500 V AC (between field and system)

Product Description The Yokogawa SAI143-H53 S4 is a latest-revision, high-density analog input module designed exclusively for the ProSafe-RS safety instrumented system. This module provides 16 isolated channels to accurately capture 4-20 mA signals from field transmitters while facilitating bi-directional HART communication for advanced device diagnostics. The “S4” revision incorporates the most recent hardware enhancements for superior long-term reliability and thermal management. It is designed to meet the most stringent safety standards, ensuring that critical process data is transmitted with high integrity to the safety control station, even in electrically noisy industrial environments.

Application Areas This module is a vital component in safety-critical architectures including Emergency Shutdown Systems (ESD), Fire and Gas (F&G) monitoring, and Burner Management Systems (BMS). It is widely deployed in offshore oil platforms, LNG terminals, and chemical refineries where maintaining SIL3 safety loops is mandatory for personnel and environmental protection.

Product Specifications

• Weight: 0.35 kg
• Dimensions: 130 mm x 115 mm x 32 mm
• Country of Origin: Japan
• Power Consumption: 300 mA at 24 V DC (Internal)
• Revision Status: S4 (Latest Production Standard)

Operational Precautions

• Ensure the module is installed in a compatible ProSafe-RS rack (such as the SNB10D or SNT10D) to ensure proper backplane communication.
• When utilizing the module for SIL3 safety loops, verify that the application software is configured for “Dual Redundant” mode and that two modules are properly synchronized.
• Do not exceed the maximum input current rating; over-current conditions may damage the high-precision shunt resistors on the input channels.
• Handle the module using ESD-safe procedures to prevent damage to the S4-specific high-speed processing components.

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