Product Specification Document: Bently Nevada 3500/22M (138607-01)
June 08, 2026

Product Specification Document: Bently Nevada 3500/22M (138607-01)

The 3500/22M (138607-01) is a Standard Transient Data Interface (TDI) Module manufactured by Bently Nevada (Baker Hughes), serving as the core communication and data acquisition gateway within the 3500 Machinery Protection System. It integrates the functionality of the legacy 3500/20 Rack Interface Module (RIM) with high‑speed transient data processing capabilities, acting as the primary link between 3500 series monitoring modules and external diagnostic/configuration software. Installed adjacent to power supply slots in a 3500 rack, the 3500/22M enables continuous acquisition of both steady‑state parameters and high‑resolution transient waveform data from M‑series monitors (e.g., 3500/42M, 3500/45). It delivers critical vibration, position, and temperature data to platforms like System 1 for predictive maintenance, machinery diagnostics, and compliance with API 670 standards. Designed for harsh industrial environments, it combines robust hardware with advanced communication features to ensure reliable data transfer in power generation, oil and gas, and petrochemical facilities.

Description

Product Specification Document: Bently Nevada 3500/22M (138607-01)

1. Product Overview

The 3500/22M (138607-01) is a Standard Transient Data Interface (TDI) Module manufactured by Bently Nevada (Baker Hughes), serving as the core communication and data acquisition gateway within the 3500 Machinery Protection System. It integrates the functionality of the legacy 3500/20 Rack Interface Module (RIM) with high‑speed transient data processing capabilities, acting as the primary link between 3500 series monitoring modules and external diagnostic/configuration software.
Installed adjacent to power supply slots in a 3500 rack, the 3500/22M enables continuous acquisition of both steady‑state parameters and high‑resolution transient waveform data from M‑series monitors (e.g., 3500/42M, 3500/45). It delivers critical vibration, position, and temperature data to platforms like System 1 for predictive maintenance, machinery diagnostics, and compliance with API 670 standards. Designed for harsh industrial environments, it combines robust hardware with advanced communication features to ensure reliable data transfer in power generation, oil and gas, and petrochemical facilities.

2. Basic Product Information

Manufacturer and Model Identity

  • Manufacturer: Bently Nevada (Baker Hughes)

  • Product Series: 3500 Machinery Protection System

  • Model Number: 3500/22M (Part Number: 138607‑01)

  • Product Type: Standard Transient Data Interface (TDI) Module

  • System Compatibility: 3500 Rack System; M‑series Monitoring Modules (3500/40M, 3500/42M, 3500/45, 3500/50); System 1 Software; 3500 Configuration Software

  • Country of Origin: United States

Electrical Characteristics

  • Power Supply: +24 V DC (from 3500 rack backplane)

  • Power Consumption: ≤7.7 W

  • Data Interfaces: 10/100 Mbps Ethernet (RJ45); USB 2.0 (Type‑B, front panel for configuration)

  • Data Transfer Rate: Up to 10 Mbps

  • Internal Bus: High‑speed 3500 rack backplane bus

  • Sensor Power: Distributes −24 V DC to connected monitoring modules

Physical and Mechanical

  • Enclosure: Heavy‑duty metal, EMI‑shielded

  • Dimensions: 241 mm × 24.4 mm × 242 mm (9.50 in × 0.96 in × 9.52 in)

  • Net Weight: ~0.82 kg (1.8 lb)

  • Rack Slot: Single‑slot, leftmost adjacent to power supply

  • Front Panel Indicators: TX/RX LEDs (communication status); Module Status LED; Fault LED

  • Enclosure Rating: IP20 (indoor use; protected against finger contact)

Compliance and Certification

  • Standards: API 670 (4th edition), ISO 10816, IEC 61000‑6‑2, IEC 61000‑6‑4

  • EMC: CE marked; enhanced RFI/EMI immunity for industrial noise

  • Environmental: RoHS compliant; conformal coating on internal PCB

  • Certifications: cULus, ATEX/IECEx (optional for hazardous areas)

  • Quality: ISO 9001 manufacturing; 100% factory tested and calibrated

3. Function and Product Positioning

The 3500/22M (138607‑01) is a high‑performance TDI module that unifies rack interface and transient data acquisition, serving as the data backbone for 3500 system monitoring and diagnostics.

Core Functions

  • Rack Interface Management: Acts as the central communication hub for the 3500 rack, coordinating data exchange between all installed monitoring modules and external software.

  • Transient Data Acquisition: Captures high‑resolution waveform data (vibration, position, keyphasor) from M‑series monitors at sampling rates up to 10 kHz, critical for fault diagnosis (e.g., imbalance, misalignment, bearing wear).

  • Steady‑State Data Logging: Continuously collects and transmits real‑time and historical steady‑state parameters (amplitude, temperature, speed) to System 1 for trend analysis and predictive maintenance.

  • System Configuration & Diagnostics: Enables remote/local configuration of the 3500 rack via USB/Ethernet; provides self‑diagnostics for module, backplane, and communication faults.

  • Keyphasor Processing: Synchronizes transient data with keyphasor signals for phase‑locked vibration analysis and overspeed protection.

Operational Features

  • Dual Communication Ports: Ethernet for high‑speed data transfer to System 1; USB for local configuration and firmware updates.

  • Hot‑Swappable: Supports replacement without rack shutdown, minimizing maintenance downtime.

  • LED Status Indicators: Clear visual feedback for module health, communication activity, and fault conditions.

  • Wide Environmental Tolerance: Operates reliably in extreme temperatures and electrically noisy industrial environments.

Product Positioning

Positioned as the standard TDI module for 3500 series machinery protection systems, the 3500/22M is the primary choice for critical rotating machinery monitoring requiring both steady‑state and transient data capabilities. It serves as the essential link for:
  • API 670‑compliant protection and condition monitoring systems

  • High‑resolution vibration diagnostics for turbines, compressors, and generators

  • Seamless integration between 3500 hardware and System 1 software

  • Retrofit projects replacing legacy 3500/20 RIM modules

4. Core Performance Parameters

Data Acquisition Performance

  • Compatible Monitors: 3500/40M, 3500/42M, 3500/45, 3500/50 (all M‑series)

  • Transient Sampling Rate: Up to 10 kHz (per channel)

  • Waveform Resolution: 24‑bit analog‑to‑digital conversion

  • Data Storage: Buffered on‑board memory for pre‑/post‑alarm transient data

  • Latency: <100 ms (real‑time data transmission)

Communication Specifications

  • Ethernet Protocol: TCP/IP, Modbus TCP

  • Ethernet Speed: 10/100 Mbps (auto‑negotiating)

  • USB: USB 2.0 (Type‑B, front panel)

  • Backplane Bus: 3500 high‑speed proprietary bus

  • Data Formats: Vibration waveforms, steady‑state parameters, keyphasor pulses, fault logs

Environmental Limits

  • Operating Temperature: −40°C to +85°C (−40°F to +185°F)

  • Storage Temperature: −55°C to +100°C (−67°F to +212°F)

  • Relative Humidity: 5%–95% RH (non‑condensing)

  • Vibration Resistance: 25 g (5 Hz–2 kHz); 50 g shock (11 ms half‑sine)

  • EMI Immunity: >60 dB attenuation (1 MHz–1 GHz), meeting IEC 61000‑6‑2

Reliability

  • MTBF: >200,000 hours (25°C, full load)

  • Warranty: 1 year (standard); extended warranties available

  • Lifecycle Status: Active production (fully supported in new and legacy 3500 systems)

5. General Matching Accessories

Installation and Mounting

  • 3500 rack mounting hardware (standard with rack)

  • Front panel key lock (security for configuration access)

  • Ethernet cable (CAT5e/CAT6, shielded for industrial use)

  • USB configuration cable (Type‑A to Type‑B)

System Compatibility

  • 3500 Series Power Supply Modules (e.g., 3500/15)

  • M‑series Monitoring Modules (3500/42M, 3500/45, 3500/50)

  • System 1 Machinery Management Software (v4.0+)

  • 3500 System Configuration Software

Maintenance and Spares

  • Replacement front panel LEDs and indicators

  • Conformal coating touch‑up kit (PCB protection)

  • Firmware update kit (USB‑based)

  • Annual calibration verification certificate

Documentation and Software

  • 3500/22M (138607‑01) datasheet and installation manual

  • 3500 Rack System Planning Guide

  • System 1 Software User Manual

  • Factory test and calibration report (included with unit)

6. Applicable Equipment and Industry Fields

Primary Applications

  • Power Generation: Large steam/gas turbines, generators, and critical compressors in thermal, combined‑cycle, and nuclear power plants.

  • Oil and Gas: Centrifugal compressors, turboexpanders, and large pumps in refineries, LNG facilities, and offshore platforms.

  • Petrochemical: Process compressors, reactors, and high‑speed rotating equipment requiring transient vibration analysis.

Secondary Applications

  • Heavy Industry: Steel mill rolling mills, industrial fans, and blowers for condition monitoring and fault diagnosis.

  • Marine: Ship propulsion turbines and generators for continuous monitoring and protection.

  • Utilities: Water treatment large pumps and blowers for predictive maintenance and efficiency optimization.

Compatibility Notes

  • 3500 Rack Exclusive: Designed only for 3500 series racks; not compatible with 3300 series systems.

  • M‑Series Monitor Dependent: Transient data acquisition requires M‑series monitors; legacy non‑M modules do not support waveform capture.

  • Software Requirement: Full transient data functionality requires System 1 software; basic steady‑state data available via Modbus TCP.


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