Bently 3500/42M 128229-01

Bently 3500/42M 128229-01

Product Introduction
The 3500/42M 128229-01 is a highly versatile 4-channel monitoring module designed to accept inputs from proximity probes, seismic velocity sensors, and accelerometers. The specific part number 128229-01 designates the Proximitor/Seismic I/O Module equipped with internal terminations. It is engineered to provide continuous, online machinery protection by comparing processed vibration and position signals against user-programmable alarm setpoints.

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Description

Bently 3500/42M 128229-01

Technical Specifications

  • Module Type: Displacement/Velocity/Acceleration Monitor
  • I/O Assembly PWA: 128229-01 (Internal Terminations)
  • Channel Count: 4 independent channels
  • Input Signal Range: -10 Vdc to +10 Vdc
  • Power Consumption: 7.7 Watts

Functional Features

  • Multi-Sensor Compatibility: Seamlessly accepts eddy current, velocity, and acceleration sensor inputs within a single module.
  • Advanced Signal Processing: Capable of extracting casing vibration signals from relative shaft vibrations to provide absolute shaft measurements.
  • High-Precision Measurement: Features up to 24-bit resolution and low noise levels, ensuring accurate analog signal measurement across a wide dynamic range.
  • Built-in Calibration: Includes an automatic calibration function to guarantee measurement accuracy and reliability.

Application Scenarios
Extensively deployed in large gas and steam turbines, compressors, and critical rotating equipment where precise absolute and relative vibration monitoring is required.

Performance Parameters

  • Velocity Sensitivity: 20 mV/(mm/s) pk at 100 Hz
  • Resolution: 0.3662 µA/bit
  • Frequency Response: From lower working frequency up to 1 kHz (60,000 cpm)

Material Composition
Constructed with high-grade industrial electronic components, conformal-coated PCBs for environmental protection, and robust internal terminal blocks for secure wiring.

Structural Characteristics
Full-height module featuring front-panel buffered sensor outputs with built-in short-circuit protection. Includes status LEDs for OK, TX/RX, and Bypass modes.

Working Principle
Receives raw analog signals from various transducers, conditions them using internal filtering and integration, and continuously compares the resulting measurements against configured Alert and Danger thresholds to trigger protective relays.

Installation Requirements
Must be installed in an available monitor slot within the 3500 rack. Sensor cables connect directly to the front-panel coaxial connectors.

Usage Notes
Ensure the 3500 Rack Configuration Software is properly set to recognize the 128229-01 I/O assembly. Verify that the internal terminations are correctly configured if external junction boxes are not used.

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