Bently Nevada 3500/42-02-00

Product Overview: The 3500/42-02-00 is a configurable 4-channel monitor module within the Bently Nevada 3500 Machinery Protection System. It is functionally identical to the 3500/42-01-01 but differs in two key aspects: the I/O module uses external terminals (rather than internal terminals), and it carries no agency approval. The part number decoding is: “02” = I/O module with external terminals; “00” = no agency approval. The module PWA is 176449-02 paired with the appropriate external termination I/O module.

Category:

Description

Bently Nevada 3500/42-02-00

Technical Specifications:

  • Module Type: Full-height, 4-channel configurable monitor
  • Input Signal Range: -10V DC to +10V DC
  • Power Consumption: 7.7 watts typical
  • Sensor Power Supply: -24V DC
  • Resolution: Up to 24-bit
  • Frequency Response: Up to 1 kHz (60,000 cpm)
  • Operating Temperature: -30°C to +65°C (-22°F to +150°F)
  • Storage Temperature: -40°C to +85°C (-40°F to +185°F)
  • Humidity: 95% non-condensing
  • Agency Approval: None

Functional Features:

  • Identical measurement and processing capabilities to the 3500/42-01-01
  • Configurable for radial vibration, axial position, differential expansion, eccentricity, acceleration, velocity, and absolute shaft vibration
  • Channels programmed in pairs
  • Differential signal processing for absolute shaft vibration measurement
  • Built-in automatic calibration
  • Up to 24-bit resolution
  • External termination I/O module for field wiring connections at a separate terminal block

Application Scenarios:

  • Applications where CSA/NRTL/C agency approval is not required
  • Installations where field wiring is routed through external terminal blocks
  • Steam turbine, compressor, pump, fan, and generator vibration monitoring
  • Power generation, petrochemical, and metallurgical industries

Performance Parameters:

  • Channel count: 4 channels per module (programmed in pairs)
  • Measurement accuracy: ±0.5% full scale
  • Vibration measurement range: 0–1000 μm peak-to-peak
  • Displacement measurement range: 0–2000 μm
  • Frequency response: 0.5–1000 Hz (vibration), 0–100 Hz (displacement)

Material Composition:

  • High-reliability electronic components on multi-layer PCB
  • Metal module enclosure with conformal coating
  • Gold-plated backplane edge connectors

Structural Features:

  • Full-height module form factor
  • Front panel with OK, TX/RX, and Bypass LED indicators
  • Rear I/O module with external terminal connections (field wiring connected at separate terminal block)
  • Plug-in design compatible with any accessible rack slot

Working Principle:
Identical to the 3500/42-01-01 — receives analog signals from sensors, conditions and processes them according to the programmed measurement function, compares against alarm setpoints, and drives alarm and analog outputs accordingly.

Installation Requirements:

  • Install the main module in any accessible full-height rack slot
  • Install the corresponding external termination I/O module in the rear slot
  • Connect sensor cables to the external terminal