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Protection Systems

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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

Tachometer


1 Tachometer Input:

  • ±25V (50V max. peak to peak)
  • 1 to 50,000 events per revolution


Input Impedance:

  • 120k minimum


Speed/Frequency Range:

  • 1 to 1,200,000 RPM
  • 0.0167 to 20,000Hz


Speed Measurement Error:

  • 1 to 12,000 RPM +/- 1 RPM
  • 12,001 to 120,000 RPM +/- 6 RPM
  • 120,001 to 1,200,000 RPM +/- 50 RPM