AAI135-S00/K4A00

Product Introduction

The Yokogawa AAI135-S00/K4A00 is a 16-channel analog input module designed for use in ProSafe-RS, Yokogawa’s safety instrumented system (SIS). Engineered for Safety Integrity Level (SIL) 2/3 applications, the module plays a vital role in critical process safety functions by ensuring high reliability, precision signal acquisition, and robust fault detection.

Supporting 4–20 mA DC analog signals and HART communication, the AAI135-S00/K4A00 allows both analog and digital data exchange with smart field instruments. This dual functionality makes it suitable for comprehensive asset monitoring and diagnostics, enabling predictive maintenance and reducing unscheduled downtime. With channel-to-channel and channel-to-ground isolation, this module ensures safe and stable operation in electrically noisy environments.

Product Specifications

Product Applications

The AAI135-S00/K4A00 is purpose-built for Safety Instrumented Systems (SIS) and used in a wide range of process safety applications where high reliability, diagnostics, and certification compliance are critical. Some of its key applications include:

• Emergency Shutdown Systems (ESD): Captures analog input from sensors used to trigger shutdown events.

• Burner Management Systems (BMS): Acquires signals from flame detectors, temperature and fuel pressure transmitters.

• Fire and Gas Detection: Processes analog data from combustible and toxic gas sensors.

• High-Integrity Pressure Protection Systems (HIPPS): Used in upstream oil and gas systems to ensure pipeline integrity.

• Boiler and Turbine Protection: Provides analog inputs for overspeed, overpressure, or over-temperature trips.

• Hazardous Chemical Handling: Monitors levels, flow, and temperature for fail-safe chemical containment.

Product Advantages

• SIL2/SIL3 Certification: Complies with IEC 61508, ensuring suitability for high-risk process safety environments.

• High Channel Density: 16 channels per module reduce panel space requirements and cost per point.

• Dual Functionality with HART: Supports simultaneous analog signal and digital data communication for enhanced diagnostics.

• Advanced Fault Detection: Detects wire break, signal over-range, and short circuits for early fault indication.

• Galvanic Isolation: Each channel is isolated, enhancing signal accuracy and protecting against electrical faults.

• Reliable in Harsh Conditions: Designed to perform in wide operating temperatures and humidity ranges.

• Optimized for ProSafe-RS: Seamlessly integrates into Yokogawa’s safety system architecture for unified operation.

• Minimal Maintenance: Pre-calibrated, robust design requiring low periodic maintenance and ensuring longevity.

FAQ

1. Is the AAI135-S00/K4A00 certified for use in SIL3 safety systems?
   Yes. The module is compliant with IEC 61508 for SIL2 and SIL3 applications, when configured accordingly.

2. Does each channel support HART digital communication?
   Yes, all 16 channels can support HART simultaneously, provided field devices and wiring support it.

3. Can this module detect signal loop failures?
   Yes. It includes diagnostics for open circuit, short circuit, and over-range detection.

4. Is individual channel isolation provided?
   Yes. Each input channel is electrically isolated from others and from ground.

5. How is the module configured within ProSafe-RS?
   Configuration is performed via Yokogawa’s safety engineering tools, typically using the SENG application.

6. Can this module be used in redundant input systems?
   Yes. It supports redundancy when installed with appropriate I/O base configurations.

7. Does it support live input monitoring during operation?
   Yes. The module allows real-time signal and diagnostics monitoring during live operation.

8. Is calibration needed during installation?
   No. The module comes factory-calibrated; calibration is not required under normal conditions.

9. Can analog signal filtering be configured per channel?
   Yes. Input filtering settings can be applied through engineering configuration tools.

10. Is there built-in HART burst mode compatibility?
    Yes. It supports HART burst communication for fast device diagnostics reporting.

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FAQ

1. Is the AAI135-S00/K4A00 certified for use in SIL3 safety systems?
   Yes. The module is compliant with IEC 61508 for SIL2 and SIL3 applications, when configured accordingly.

2. Does each channel support HART digital communication?
   Yes, all 16 channels can support HART simultaneously, provided field devices and wiring support it.

3. Can this module detect signal loop failures?
   Yes. It includes diagnostics for open circuit, short circuit, and over-range detection.

4. Is individual channel isolation provided?
   Yes. Each input channel is electrically isolated from others and from ground.

5. How is the module configured within ProSafe-RS?
   Configuration is performed via Yokogawa’s safety engineering tools, typically using the SENG application.

6. Can this module be used in redundant input systems?
   Yes. It supports redundancy when installed with appropriate I/O base configurations.

7. Does it support live input monitoring during operation?
   Yes. The module allows real-time signal and diagnostics monitoring during live operation.

8. Is calibration needed during installation?
   No. The module comes factory-calibrated; calibration is not required under normal conditions.

9. Can analog signal filtering be configured per channel?
   Yes. Input filtering settings can be applied through engineering configuration tools.

10. Is there built-in HART burst mode compatibility?
    Yes. It supports HART burst communication for fast device diagnostics reporting.

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