A6220 Shaft Eccentricity
Vibration Monitor for
AMS 6500 Machinery
Health Monitor
The Shaft Eccentricity Monitor is designed for high reliability for the plant’s most critical rotating machinery. This 1-slot monitor is used together with other AMS 6500 monitors to build a complete API 670 machinery protection monitor. Applications include steam, gas, compressors and hydro turbomachinery.
The main functionality of the Shaft Eccentricity Monitor is to accurately monitor shaf eccentricity and reliably protect machinery by comparing vibration parameters against alarm setpoints, driving alarms and relays.Shaft eccentricity monitoring consists of a displacement sensor either mounted through the bearing case or mounted internally on the bearing housing with an
eccentricity collar near the thrust bearing as the target. The displacement sensor is a non-contact sensor measuring shaft movement proportional to shaft bowing or bent shaft, below 600 rpm.
Shaft eccentricity monitoring is an important measurement on large sleeve bearing machines for predictive and protection monitoring. The AMS 6500 Machinery Health Monitor is an integral part of PlantWeb® and AMS software.
PlantWeb provides operations integrated machinery health combined with the Ovation® and DeltaV™ process control system. AMS software provides maintenance personnel advanced predictive and performance diagnostic tools to confidently and accurately determine machine malfunctions early.

· Two-channel, 3U size, 1-slot plugin module decreases cabinet space requirements in half from traditional four-channel 6U size cards
· API 670 compliant, hot swappable module
· Remote selectable limit multiply and trip bypass
· Front and rear buffered and proportional outputs, 0/4-20 mA output, 0 – 10 V output
· Self-checking facilities include monitoring hardware, power input, hardware temperature, sensor and cable
· Use with displacement sensor 6422, 6423, 6424 and 6425, driver CON XXX and key monitoring module

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