Product Overview

The YOKOGAWA SAI533-H33/PRP is a high-integrity analog output module, specifically designed for use in Safety Instrumented Systems (SIS). This specialized YOKOGAWA component provides reliable control signals to safety-rated final control elements. The module is safety-certified (typically TÜV SIL3), ensuring that it meets the highest standards of functional safety in process control.

The SAI533 designation indicates an 8-channel isolated analog output module, with the suffixes -H33 and /PRP adding additional clarity regarding the output signal type and redundancy features.

• -H33 signifies the output type and configuration, typically 4−20 mA DC.

• /PRP indicates Peer-to-Peer Redundancy (PRP), meaning the module is designed for use in a redundant pair to ensure maximum fault tolerance, making the system fail-safe in the event of hardware failure.

Detailed Technical Specifications of the SAI533−H33/PRP

Redundancy and Safety Features

The /PRP suffix is crucial for understanding the redundancy aspect of the SAI533−H33/PRP module. It allows the module to operate in Peer-to-Peer Redundancy, meaning two modules are configured together for maximum fault tolerance. This ensures continuous operation and eliminates any single point of failure in the analog output path. This redundancy, along with the continuous self-diagnostics, guarantees that the module meets the SIL3 safety standard, offering high protection against dangerous equipment failure.

The module's fully isolated output channels ensure that external noise and ground faults do not interfere with the output signals, providing precise and stable control of safety-critical elements like valves and actuators.

High-Level Functional Benefits

• Peer-to-Peer Redundancy (PRP): Enables continuous operation even in case of module failure, ensuring maximum uptime and safety.

• SIL3 Certified: Meets the highest industry standards for safety, making it suitable for use in critical applications that require a high degree of reliability.

• Fully Isolated Output Channels: Provides superior signal integrity by preventing external noise and ground faults from impacting system performance.

• Self-Diagnostics: Ensures the module is always operating correctly, providing early fault detection and minimizing downtime.

Frequently Asked Questions (FAQ)

Q1: What does the /PRP suffix on the SAI533−H33/PRP module indicate?
A1: The /PRP suffix indicates Peer-to-Peer Redundancy support, meaning the module is designed to work in a redundant pair with another identical module, ensuring maximum fault tolerance and system availability.

Q2: What is the safety rating of the SAI533−H33/PRP module?
A2: The SAI533−H33/PRP module is certified for use in safety functions up to SIL3 (Safety Integrity Level 3), meeting the highest safety standards.

Q3: How many output channels are on the SAI533−H33/PRP module?
A3: The SAI533−H33/PRP module provides eight (8) fully isolated analog output channels.

Q4: What is your policy if the module has a quality issue upon arrival?
A4: We support a 30-day return window if there are any quality issues with the YOKOGAWA SAI533-H33/PRP module.