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Protection Systems

General Resources



XM-120 & 121 Dynamic Measurement Modules

Introduction Communications Inputs Tachometer Outputs Indicators Signal Conditioning
Complex Data Measured Parameters Data Buffers Alarms Relays Max Speed Capture Non-Volatile Configuration
Power Approvals Environmental Physical Ordering Informaton

Measured Parameters


Overall:

  • RMS
  • Peak (true or calculated)
  • Peak to Peak (true or calculated)


4 Bands per Channel:

Limits defined in frequency or order Domain. Bands may overlap. Calculated Value:

  • Overall in band
  • Max peak in band


Gap (or transducer bias voltage)


Speed


Acceleration (RPM/min)


Orders:

  • Magnitude: 1x, 2x, 3x
  • Phase: 1x, 2x


Not 1x


SMAX Magnitude and Phase


Sum Harmonics:

Sum Harmonics is the sum of all harmonics from a user defined first order to the maximum order in the spectra.