Bently Nevada|3500/46M 176449-06|Multimode Prox/Velom Input/Output (I/O) module

Description

The 176449-06 is a specialized Multimode Prox/Velom Input/Output (I/O) module designed for the Bently Nevada 3500 system. It interfaces with proximity probes and velocity sensors, providing precise measurement of machine conditions such as vibration, air gap, and thrust. The module supports external termination blocks and offers advanced signal conditioning and filtering capabilities.

Features

• Supports external termination blocks for flexible installation
• Configurable for multiple operating modes and machine speeds
• High accuracy and reliability in harsh industrial environments
• Compatible with various hazardous area approvals

Technical Specifications

• Frequency Response:

  • Direct filter: 0.104 Hz to 500 Hz (rotor speed 25 to 1,500 cpm)
  • Gap filter: -3 dB at 0.05 Hz
  • Not 1X filter: 0.25 to 128 times rotor speed, Constant Q notch filter, minimum rejection in stopband of -50 dB
  • 1X and NX vector, Not 1X, and composite parameters valid for machine speeds per selected NX value range
  • Direct and Gap: Within ±0.33% of full-scale typical, ±1% maximum
  • 1X and NX: Within ±0.33% of full-scale typical, ±1% 1X maximum, ±3% NX maximum
  • Not 1X: ±1% of full-scale typical, ±3% maximum
  • Composite: ±1% of full-scale typical

• Air Gap Measurement:

  • Instantaneous Air Gap: Measures when pole-passing rate slows to less than one pole/second
  • Average Air Gap: Averages values for all poles over one revolution
  • Minimum Air Gap: Detects the minimum pole gap value in a revolution
  • Maximum Air Gap: Detects the maximum pole gap value in a revolution
  • Min Air Gap Pole Number: Identifies the pole number with the minimum gap value

• Filter Quality:

  • High-pass: 4-pole (80 dB per decade, 24 dB per octave)
  • Low-pass: 2-pole (40 dB per decade, 12 dB per octave)

• Accuracy:

  • Direct: Within ±1% of full-scale typical, ±2% maximum (exclusive of filters)
  • 1X Amplitude: Within ±1% of full-scale typical, ±2% maximum (exclusive of filters)
  • 2X Amplitude: Within ±1% of full-scale typical, ±2% maximum (exclusive of filters)

• Hydro Thrust:

  • Frequency Response: Direct filter -3 dB at 1.2 Hz; Gap filter -3 dB at 0.41 Hz
  • Accuracy: Within ±0.33% of full-scale Direct typical, ±1% maximum

• Hydro Acceleration:

  • Frequency Response: Bias filter -3 dB at 0.01 Hz; Not OK filter -3 dB at 2400 Hz
  • 1X and 2X vector filter: Constant Q filter minimum rejection in stopband of -51 dB (valid for machine speeds 60 cpm to 60,000 cpm)
  • Filter Quality: High-pass 4-pole (80 dB per decade, 24 dB per octave); Low-pass 4-pole (80 dB per decade, 24 dB per octave)

• Hydro Stator End Winding (SEW):

  • Frequency Response: Direct 5.0 Hz to 800 Hz (-3 dB corners); Bias voltage DC to 0.05 Hz (-3 dB)
  • 2x line frequency (100 Hz or 120 Hz) Constant Q filter (Q=20), minimum rejection in stopband of -60 dB
  • Direct Resultant: 5.0 Hz to 800 Hz (-3 dB corners), resultant of both X and Y axis inputs
  • Pole Pass Amplitude: 2x line frequency (100 Hz or 120 Hz) Constant Q filter (Q=20), minimum rejection in stopband of -60 dB
  • Accuracy: Direct ±1% of Full Scale maximum; Bias voltage ±1% of Full Scale maximum; Pole Pass Amplitude ±2% of full-scale typical, ±3% maximum; Direct Resultant ±1% of full-scale typical, ±2% maximum; Pole Pass Resultant ±2% of full-scale typical, ±3% maximum

• Multimode Hydro Dynamic Pressure:

  • Frequency Response: Low mode 0.1875 Hz to 343.7500 Hz; High mode 0.75 Hz to 1375.00 Hz
  • Filter Quality: High-pass 4-pole (80 dB per decade, 24 dB per octave); Low-pass 4-pole (80 dB per decade, 24 dB per octave)

• Dimensions:

  • I/O Module: 241.3 mm x 24.4 mm x 99.1 mm (9.50 in x 0.96 in x 3.90 in), weight 0.45 kg (1.0 lb)

• External Termination Blocks:

  • Euro Style Connectors: 125808-11
  • Terminal Strip Connectors: 128015-11

• Cables:

  • Available lengths: 5 feet (1.5 m), 7 feet (2.1 m), 10 feet (3.0 m), 25 feet (7.6 m), 50 feet (15.2 m), 100 feet (30.5 m)
  • Assembled or not assembled options

• Hazardous Area Approvals:

  • Options include cNRTLus (Class 1, Division 2) and ATEX/IECEx/CSA (Class 1, Zone 2)