Description

The3500/25Enhanced Keyphasor Moduleis a half-height, two-channelmoduleused to provideKeyphasor signals to themonitor modules in a 3500rack. Themodulereceives input signals from proximity probes or magnetic pickups and converts thesignals to digitalKeyphasor signals that indicate when theKeyphasor mark on theshaft coincides with the Keyphasor transducer. The3500Machinery Protection System can accept up to four Keyphasor signals for normal configuration and up to eight Keyphasor signals in a paired configuration.

Keyphasor signalis a once-per-turn or multiple- event-per-turn pulsefrom a rotating shaft or gear used to providea precisetiming measurement. This allows 3500monitor modules and externaldiagnostic equipment to measureshaft rotativespeed and vector parameters such as 1Xvibration amplitudeand phase.

TheEnhanced Keyphasor Moduleis an improved 3500 system module. It offers expanded Keyphasor signal processing capabilities over theprevious design while maintaining completedownward-compatibility in terms of form, fit and function with existing Keyphasor modules for use in legacy systems. TheKeyphasor module, PWA 125792-01, is completely replaced by theupdated 149369-01module.

When a system Keyphasor input is required for TripleModular Redundant (TMR) applications, the3500system should employ two Keyphasor modules. In this configuration, the modules work in parallelto provideboth a primary and secondary Keyphasor signalto theother modules in therack.

A system with morethan four Keyphasor inputs may usea paired configuration provided thereareno morethan four