Description
Key Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | Bently Nevada (Baker Hughes) |
| Model | 3500/22M |
| Product Type | Transient Data Interface (TDI) |
| System Compatibility | Bently Nevada 3500 Series |
| Rack Position | Slot 1 (adjacent to power supplies) |
| Communication | 10/100Base-T Ethernet |
| Local Configuration | Front USB-B Port |
| Primary Functions | Rack configuration, communication, data acquisition |
| Data Types | Static values, Dynamic waveforms, Transient data (licensed) |
| Compatible Software | System 1, 3500 Configuration Software |
| Power Consumption | Approximately 10.5 W |
| Typical Weight | Approximately 0.91 kg |
Every 3500 rack requires one TDI or one legacy RIM, and the module always occupies Slot 1 beside the rack power supplies. Static data collection is standard, while dynamic and high-resolution transient waveform acquisition can be enabled with an optional Channel Enabling Disk.
Product Introduction
The Bently Nevada 3500/22M is the central communication module of the 3500 Machinery Protection System. Although it is not part of the critical protection path, it manages system configuration, communicates with monitoring software, and continuously collects operating data from installed monitor modules.
The TDI interfaces with M-Series monitor modules such as:
- 3500/40M Proximitor Monitor
- 3500/42M Proximitor/Seismic Monitor
- 3500/44M Aeroderivative GT Monitor
- 3500/45 Position Monitor
- 3500/46 Hydro Monitor
It gathers steady-state values and, when licensed, dynamic waveform and transient event data, transmitting them over Ethernet to System 1 for machinery diagnostics and predictive maintenance.
- 3500/22M
Major Features
- Central communication gateway for the 3500 System
- Combines Rack Interface Module (RIM) and communication processor functions
- Continuous collection of machine monitoring data
- Supports static and transient waveform acquisition
- Front-panel USB configuration port
- Rear Ethernet interface (10/100Base-T)
- Compatible with System 1 Condition Monitoring software
- Supports 3500 System Configuration Software
- Rack Reset button on the front panel
- Does not participate directly in machinery protection logic
- Available in standard and TMR (Triple Modular Redundant) configurations
Typical Applications
The 3500/22M is widely used in critical rotating machinery applications, including:
- Steam turbines
- Gas turbines
- Centrifugal compressors
- Large electric motors
- Generators
- Pumps
- Petrochemical plants
- Oil & Gas facilities
- Refineries
- Power generation plants
- Mining operations
Troubleshooting Quick Reference
| Symptom | Possible Cause | Relevance | Recommended Action |
|---|---|---|---|
| No communication with System 1 | Ethernet configuration issue | ✅ High | Verify IP address, network cable, and switch settings |
| Unable to configure rack | TDI not detected | ✅ High | Check USB/Ethernet connection and rack address |
| Rack not recognized | TDI hardware failure or incorrect address | ✅ High | Verify address switch settings and module status |
| Dynamic waveform unavailable | Channel Enabling Disk not installed | ✅ High | Confirm transient license is installed |
| Front USB not responding | Driver or cable issue | ⚠️ Medium | Test with another USB cable and PC |
| Module OK LED off | Rack power supply problem | ⚠️ Medium | Verify 3500/15 power supply operation |
| Configuration lost after replacement | Backup not restored | ⚠️ Medium | Reload saved rack configuration before commissioning |
Technical Note:
The 3500/22M is not part of the machinery protection path. A failure of the TDI generally affects communication, configuration, and data collection but does not prevent the monitor modules from continuing to perform machinery protection functions.
Frequently Asked Questions (FAQ)
Q1. What is the function of the 3500/22M?
The 3500/22M TDI acts as the communication and configuration interface for the 3500 rack. It transfers monitoring data to System 1 software and allows configuration of the entire rack.
Q2. Is the 3500/22M required?
Yes. Every standard 3500 rack requires either one 3500/22M TDI or one legacy 3500/20 Rack Interface Module (RIM) installed in Slot 1.
Q3. Does the TDI perform machinery protection?
No. The TDI is a communication and data acquisition module. Machinery protection functions remain within the installed monitor modules (such as the 3500/40M and 3500/42M), so normal protection continues even if the TDI is unavailable.
Q4. What communication interfaces are available?
The module provides:
- Front-panel USB-B port for local configuration
- Rear-panel 10/100Base-T Ethernet port for communication with System 1 and configuration software
Fiber-optic Ethernet I/O options are also available on certain versions.
Q5. Can the 3500/22M collect transient waveform data?
Yes. Static data collection is included as standard. High-resolution dynamic and transient waveform acquisition requires an optional Channel Enabling Disk license.
Q6. What should be verified before replacing the module?
Before replacing a 3500/22M, verify:
- Complete model and option code
- Rack address settings
- Ethernet configuration (IP address, subnet, gateway)
- System 1 software compatibility
- Firmware revision
- Rack configuration backup
- Installed monitor module compatibility
Restoring the saved rack configuration after replacement significantly reduces commissioning time
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