Technical Overview

The SAI143-H53/A4D00 is a high-density, safety-certified analog input module for the Yokogawa ProSafe-RS Safety Instrumented System (SIS). It receives 4–20 mA signals from up to 16 field transmitters, providing galvanic isolation and ensuring reliable process monitoring in SIL-rated safety loops.

With integrated HART communication and robust G3-rated construction, this module maintains signal integrity, diagnostic transparency, and high availability in harsh industrial environments.

Detailed Specifications

Application & Deployment

• High-integrity monitoring of process variables in ProSafe-RS safety loops

• Compatible with 2-wire (active) or 4-wire (passive) 4–20 mA transmitters

• Dual-redundant configuration for continuous data availability

• Installation in Remote Instrument Enclosures (RIEs) exposed to chemical or corrosive environments

• SIL-rated critical applications requiring diagnostic transparency

Operational Notes

• HART passthrough allows field device diagnostics without interrupting the safety function

• Dual-redundant terminal interface (/A4D00) supports high-availability module pairing

• G3-rated conformal coating ensures resistance to corrosive gases

• Extended temperature tolerance enables deployment in variable industrial climates

Technical FAQ

Can the module handle both active and passive transmitters?
Yes. Depending on terminal wiring, it supports 2-wire (powered by the module) and 4-wire (externally powered) transmitters.

What does the /A4D00 option code indicate?
It specifies a dual-redundant terminal interface with pressure clamp terminals for easy pairing of two modules in high-availability configurations.

Is the module compatible with standard CENTUM VP systems?
The SAI143-H53/A4D00 is certified specifically for ProSafe-RS. Use in CENTUM VP systems requires verification against safety and compatibility requirements.