Product Description

High-Precision Shaft Eccentricity Overview

The A6220 (Ordering Code: 9199-00009) is a specialized two-channel monitoring module engineered for the Emerson AMS 6500 Machinery Health Monitor. This 3U plug-in card is a critical component for the protection of large-scale rotating assets, such as steam turbines, gas turbines, and high-performance compressors. The A6220 (9199-00009) is specifically designed to measure shaft eccentricity—the peak-to-peak displacement of a rotor at low speeds—which is vital for identifying shaft bow or thermal misalignment before the machine transitions through its critical speeds during startup or shutdown.

Detailed Technical Specifications

The A6220 (A6220) integrates high-integrity signal processing with robust diagnostic capabilities to meet API 670 requirements.

• Manufacturer: Emerson (CSI / EPRO)

• Model Number: A6220

• Ordering Code: 9199-00009

• Monitoring Mode: Peak-to-Peak Shaft Eccentricity

• System Series: AMS 6500 Machinery Health Monitor

• Number of Channels: 2 Independent Monitoring Channels

• Standard Compliance: Fully API 670 compliant for machinery protection

• Sensor Input: Compatible with Eddy Current Proximity Probes (Emerson 6422, 6423, 6424, 6425 series)

• Signal Frequency Response: Optimized for low-speed DC displacement tracking

• Buffered Outputs: Front SMB connectors and rear terminal block access for raw sensor signals

• Proportional Outputs: User-configurable 0/4–20 mA or 0–10 V DC for DCS/PLC integration

• Isolation: Galvanic isolation between field signals and system backplane

• Communications: RS-232 interface for local configuration and detailed diagnostic access

• Mounting: 3U Eurocard format; hot-swappable in AMS 6500 racks

• Power Requirements: 24 V DC via system backplane

• Operating Temperature: 0 °C to +55 °C (32 °F to 131 °F)

Diagnostic Integrity and Safety Features

• Comprehensive Self-Checking: The A6220 (9199-00009) continuously monitors hardware health, power supply stability, sensor cable continuity, and internal module temperature.

• Compact Integration: Replacing legacy 6U hardware, the A6220 uses a single-slot 3U design to increase rack density while maintaining superior signal accuracy.

• Deterministic Protection: Real-time eccentricity data ensures that rotor instability is flagged immediately, allowing for automated trip logic or manual intervention during sensitive thermal expansion phases.