The 3500/22M (288055-01) is the Transient Data Interface Module (TDI) * * of the Bently Nevada, GE 3500 TSI system, which is equivalent to the «network management+data acquisition card» of the rack. It is responsible for configuration, waveform/transient data upload, and does not participate in the protection trip circuit.

Bentley 3500/22M 288055-01 TDI module
1、 Model and positioning
Model: 3500/22M, 288055-01 is the front panel part number; The complete model is usually 3500/22-01-01-00 (front board 288055-01+rear I/O board 146031-01)
Type: TDI (Transient Data Interface)
Installation: 3500 rack slot 1 (adjacent to the power supply), each rack must be equipped with one (TDI or old RIM)
Core role: High speed data gateway for rack and System 1/configuration software, integrating original 3500/20 (RIM)+TDXnet communication processor functions
2、 Core functions
Configuration and management: downloading/uploading parameters of racks and various monitoring modules (vibration, displacement, speed, etc.), online configuration
Data collection:
Steady state data: vibration, gap voltage, temperature, speed, key phase signal
Transient/waveform: up to 48 channels synchronous sampling, bandwidth up to 500kHz, supporting 16~1024 points per revolution
Communication output:
Ethernet: 10/100Base TX (electrical port)+100Base FX (fiber optic)
Front panel: USB-B (local configuration/data export)
System linkage: Supports * * Keyphasor signal * * synchronization, fault recording, and docking with DCS/PLC data
3、 Key technical parameters
Power consumption: 10.5W
Working temperature: -30 ℃~+65 ℃
Sampling: synchronous/asynchronous optional; Synchronization: 16/32/64/128/256/512/1024 points per revolution
Speed range:
Channels 1-16: 1-100000 rpm
17~24 channels: 1~60000 rpm
25~48 channels: 1~30000 rpm
LED indication: OK (running normally), TX/RX (rack communication), network link
4、 Architecture and Security
Non critical path: TDI failure does not affect protection tripping (hard protection is independently completed by 3500/4xM monitoring card)
Data closed-loop: responsible for «soft management» (diagnosis, trend, waveform analysis), protection card responsible for «hard protection» (alarm, shutdown)
5、 Typical applications
Thermal power/nuclear power: turbine, generator, feedwater pump TSI system
Industrial turbines: compressor, gas turbine, high-speed motor status monitoring
System docking: Upload waveforms/trends to System 1 and send 4-20mA/Modbus data to DCS
6、 Common distinctions
3500/22M (TDI): equipped with waveform/transient acquisition, Ethernet+USB, replacing the old RIM+TDXNet
3500/20 (RIM): Only rack interface, no waveform acquisition, gradually replaced by TDI