The Bently Nevada 3500/22M Transient Data Interface (TDI) module serves as the primary gateway between the 3500 Machinery Monitoring System and Bently Nevada’s System 1® condition monitoring and diagnostic software. By consolidating the functionality of a standard Rack Interface Module (RIM) with the high-speed data collection capabilities of a communication processor, it ensures seamless integration and reliable data transmission for critical rotating machinery.
Product Specifications
| Feature | Specification |
| Model Number | 3500/22M (PWA 138607-01 AG) |
| Dimensions (TDI Module) | 241.3 mm x 24.4 mm x 241.8 mm (9.50 in x 0.96 in x 9.52 in) |
| Weight (TDI Module) | 0.91 kg (2.0 lbs) |
| Operating Temperature | -30°C to +65°C (-22°F to +149°F) |
| Storage Temperature | -40°C to +85°C (-40°F to +185°F) |
| Humidity | 95%, non-condensing |
| Communication | Ethernet (10Base-T/100Base-TX or 100Base-FX) |
| Origin | USA |
Application Areas
The 3500/22M TDI is essential for industries requiring high-fidelity machinery protection and diagnostics, including:
- Power Generation: Monitoring turbines, generators, and compressors.
- Oil & Gas: Real-time analysis of pumps, centrifugal compressors, and motors.
- Petrochemical/Industrial: Condition-based maintenance for critical manufacturing assets.
- Transient Analysis: Capturing dynamic waveform data during machine startup, shutdown, or process changes.
Product Usage Instructions
- Installation: The 3500/22M module must be installed in the slot adjacent to the rack power supplies. Ensure the rack is powered down before insertion.
- Configuration: Use the 3500 System Configuration software to assign the module and set communication parameters.
- Key Switch: The front panel includes a key switch (RUN/PROGRAM). In “RUN,” settings are locked for security; in “PROGRAM,” remote reconfiguration is permitted.
- Network Setup: Connect the Ethernet port (RJ-45 for 10/100Base-TX or Fiber Optic for 100Base-FX) to your network infrastructure to begin transmitting data to the host server.
Frequently Asked Questions (Q&A)
Q: What is the primary purpose of the 3500/22M? A: It acts as an interface that collects steady-state and transient (waveform) data from the 3500 rack and communicates this to diagnostic software like System 1®.
Q: Can I use this for non-critical machinery? A: While designed for critical machinery, it can be used on any equipment monitored by the 3500 series. However, it is most beneficial when transient data capture is required for diagnostics.
Q: Is the 3500/22M essential for rack protection? A: No, it is a data interface module. The 3500 rack will continue to provide machinery protection even if the TDI module is removed or inoperable.
Recommended Inventory (Available Models)
- 3500/22M-01-01-00
- 3500/22M-01-01-01
- 3500/22M-02-01-00 (TMR Configuration)
- 138607-01 (Standard TDI Module)
- 146031-01 (10/100 Base-TX I/O Module)
- 146032-01 (100 Base-FX I/O Module)
- 147364-01 (Buffered Signal Output Module)
- 3500/20 Rack Interface Module (RIM)
- 3500/40M Proximitor Monitor
- 3500/42M Velocity/Acceleration Monitor


