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The 3500/22M (288055-01) is the primary gateway module for the 3500 Machinery Protection System by Bently Nevada.
Functioning as a Transient Data Interface (TDI), this module replaces the legacy 3500/20 Rack...
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The 3500/22M (288055-01) is the primary gateway module for the 3500 Machinery Protection System by Bently Nevada.
Functioning as a Transient Data Interface (TDI), this module replaces the legacy 3500/20 Rack Interface Module (RIM) by integrating high-speed data acquisition with rack communication management. It serves as the essential link between the 3500 monitoring rack and engineering or diagnostic software platforms.
The 3500/22M is engineered to capture both steady-state and dynamic vibration data, ensuring that critical transient events—such as startups, shutdowns, and process disturbances—are recorded with high fidelity for advanced machinery diagnostics.
| Parameter | Specification |
|---|---|
| Model Designation | 3500/22M (288055-01) |
| Core Function | Rack Interface & High-Speed Data Acquisition (TDI) |
| Network Connectivity | Ethernet 10Base-T / 100Base-TX (RJ45) |
| Software Integration | System 1 & 3500 Configuration Software |
| Data Capture Modes | Continuous steady-state monitoring; Event-triggered transient waveform capture |
| System Architecture | Supports Standard and Triple Modular Redundant (TMR) racks |
| Operating Temperature | -30°C to +65°C (-22°F to +149°F) |
| Physical Dimensions | 241 mm × 25.8 mm × 241 mm |
| Weight | 1.80 kg |
The 3500/22M (288055-01) is mandatory in any 3500 rack requiring communication with System 1 software or remote configuration tools. It is installed in the slot directly adjacent to the rack power supplies.
By buffering and transmitting high-resolution waveform data, the module enables advanced diagnostic techniques such as:
Orbit analysis
Bode plots
Polar plots
Transient startup/shutdown analysis
These tools are critical for detecting shaft cracks, rotor rubs, misalignment, and fluid-film bearing instabilities in large steam turbines, gas turbines, and centrifugal compressors.
Q1: Can the 3500/22M (288055-01) replace an older 3500/20 RIM?
A: Yes. The 3500/22M is the modern functional replacement for the 3500/20 RIM. However, it requires the correct TDI I/O module and may require firmware updates to the rack backplane and installed monitor modules to fully utilize enhanced transient data capabilities.
Q2: Does this module provide protection logic?
A: No. The TDI is strictly a communication and data acquisition interface. Machinery protection functions—such as alarm and trip logic—are executed locally within the individual monitor modules. This ensures that protection remains active even if the TDI module or network connection is lost.
