177989-01 | Bently Nevada | Prox Accel Velom Module

Description

The Bently Nevada 177989-01 Prox Accel Velom Module is a high-performance input module designed to accept signals from proximity probes, accelerometers, and Velomitor velocity sensors. It’s optimized for aeroderivative gas turbines and other high-speed rotating machinery.

Specifications

• Model: 177989-01

• Sensor Inputs: Proximity probes, accelerometers, Velomitor velocity sensors

• Channels: Four-channel input module

• Input Impedance: Prox/Accel: 10 kΩ; Velomitor: 3.5 MΩ

• Frequency Range:

  • Non-integrated velocity: 4 Hz to 5500 Hz (–3 dB)

  • Integrated velocity: 18 Hz to 5500 Hz (–3 dB)

  • Non-integrated acceleration: 4 Hz to 30,000 Hz (–3 dB)

  • Integrated acceleration: 18 Hz to 14,500 Hz (–3 dB)

• Sensor Power Supply: 23 VDC nominal, max 43 mA

• Buffered Outputs: Coaxial connectors per channel, 550 Ω output impedance

• Power Consumption: Typical 7.7 W

• Dimensions: 241.3 mm × 24.4 mm × 241.8 mm

• Weight: Approx. 0.91 kg

• Compliance: EMC Directive 2014/30/EU; EN 61000-6-2, EN 61000-6-4

Features

• Multi-Sensor Capability: Accepts proximity, acceleration, and velocity signals

• Optimized for Turbines: Designed for aeroderivative gas turbine applications

• Advanced Filtering: Supports bandpass, 1X tracking, and signal integration

• Buffered Outputs: Diagnostic access via coaxial connectors

• Compact Design: Enables close-to-machine installation

• System Integration: Compatible with Bently Nevada 3500 series and monitoring platforms

• Reliable Performance: Built for continuous operation in demanding environments