Product Overview

The Emerson A6220 is a specialized monitoring card developed for the CSI 6500 Machinery Health Monitor platform. Its primary function is the measurement of shaft eccentricity, which is the mechanical bow or warp of a rotor, typically measured at low turning speeds. By accurately tracking the peak-to-peak displacement of the shaft surface, the A6220 provides critical data to determine if a machine is safe to bring up to full operating speed. This module is an essential component for high-capital rotating assets, ensuring that thermal bowing or permanent rotor deformation is detected before it causes catastrophic internal contact.

Key Technical Characteristics

• Compatibility: Native integration with the CSI 6500 Machinery Health Monitor rack.

• Measurement Mode: Peak-to-peak eccentricity measurement from slow roll to operating speeds.

• Signal Input: Accepts inputs from eddy current displacement sensors (proximity probes).

• Data Processing: Onboard signal conditioning to filter out electrical and mechanical runout.

• System Integration: Fully compatible with AMS Suite machinery health software for advanced orbit plotting and trend analysis.

• Self-Diagnostics: Continuous hardware and sensor loop monitoring with OK-relay functionality.

• Environmental Build: Industrial-grade circuitry designed to resist electromagnetic interference and high-vibration rack environments.

• Physical Profile: Lightweight 0.24kg module with a compact 19 x 12.8 x 7 cm footprint for standard rack slotting.

Industrial Applications

The A6220 Shaft Eccentricity Monitor is a standard requirement in Power Generation for monitoring large steam and gas turbine generator sets during startup and coast-down phases. In these applications, it identifies "temporary bow" caused by uneven cooling, preventing the operator from accelerating the turbine while rotor eccentricity exceeds safety limits. It is also extensively utilized in the Petrochemical and Refining sectors for large centrifugal compressors and multi-stage pumps. By providing a clear visualization of shaft health, the A6220 supports proactive maintenance and helps engineering teams avoid the high costs associated with bearing damage and seal failures.