Description
Bently Nevada 3500/22M Transient Data Interface Module
Configured for real-time and transient data acquisition in the 3500 Machinery Protection System, the Bently Nevada 3500/22M (288055-02) (3500/22M Transient Data Interface Module) provides direct physical/electrical execution between rack-level monitoring hardware and host diagnostic software interfaces. It operates as a communication and data buffering node within the 3500 rack architecture, supporting waveform capture and event data transfer via Ethernet and serial channels.
Hardware Specifications
| Parameter |
Specification |
| Model |
3500/22M |
| Brand |
Bently Nevada |
| Origin |
USA |
| Weight |
0.91 kg |
| Dimensions |
241.3 x 24.4 x 241.8 mm |
| Operating Temp |
0 deg C to +65 deg C |
| Power Consumption |
10.5 W |
| System Compatibility |
Bently Nevada 3500 Machinery Protection System |
| Communication Interfaces |
10Base-T/100Base-TX Ethernet, 100Base-FX Fiber Optic, USB-B |
| Data Handling |
Real-time monitoring, transient waveform capture, event logging |
| Buffer Memory |
Integrated transient data storage |
| Relay Output |
OK Relay, 5 A @ 24 VDC / 120 VAC |
| Rack Position |
Slot 1 (adjacent to power supply modules) |
TSI Data Interface Architecture and Signal Buffering Behavior
The module functions as a non-critical path interface element within the TSI monitoring chain of the 3500 system. It does not participate in protective trip logic execution but maintains continuous data acquisition from rack monitors.
From a rotor dynamics perspective, the module supports indirect analysis workflows involving eddy-current probe scaling and gap voltage validation (typically referenced against -10 VDC sensor range calibration structures). It performs waveform buffering prior to transmission to host software, reducing communication jitter during high-frequency vibration sampling events.
Cross-channel synchronization is maintained through rack-level addressing logic (up to 127 node addresses), with internal buffering isolating transient bursts from Ethernet throughput constraints. This architecture minimizes cross-talk propagation effects between parallel monitoring channels in high-density rack configurations.
Suffix Breakdown & Model Matrix
No validated suffix decomposition beyond order number differentiation is defined in the provided dataset.
Frequently Asked Questions (FAQ)
Q: Does the 3500/22M participate in machinery protection trip logic execution?
A: No. The module operates outside the protective loop and functions as a communication and data interface layer only.
Q: Can the module buffer transient waveform data during Ethernet link interruption?
A: Yes. Integrated buffer memory stores transient and event data temporarily until communication link restoration.
Q: What happens if the TDI module is removed from the 3500 rack?
A: Rack-based protection monitoring continues through M-series modules; only host communication and data acquisition functions are affected.
Field Installation Guidelines
-
Install in Slot 1 of the 3500 rack adjacent to power supply modules
-
Ensure backplane connectors are fully seated to maintain communication integrity
-
Maintain shielded Ethernet/fiber routing to reduce EMI coupling in turbine environments
-
Use keyed configuration switch to define RUN or PROGRAM mode prior to system integration
-
Verify rack address assignment (1–127 range) before host software initialization
