Overview
Configured for transient waveform data collection in the Bently Nevada 3500 Machinery Protection System, the Bently Nevada 3500/22 164466-01 (3500/22 Transient Data Interface Module) provides direct data communication between rack monitoring modules and host software platforms.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | 3500/22 164466-01 |
| Brand | Bently Nevada |
| Product Type | Transient Data Interface Module |
| Rack Position | Slot 1 adjacent to power supply modules |
| Weight | 0.91 kg |
| Dimensions | 241.3 mm x 24.4 mm x 241.8 mm |
| Operating Temp | -30 deg C to +65 deg C |
| Storage Temp | -40 deg C to +85 deg C |
| Humidity | Up to 95%, non-condensing |
| Power Consumption | 10.5 W nominal |
| Keyphasor Inputs | Up to 4 Keyphasor signals |
| Waveform Collection | Up to 48 channels with DC-coupled waveform acquisition |
| Ethernet Interface | 10Base-T / 100Base-TX RJ-45 or 100Base-FX fiber option |
| Front Panel Interface | USB-B port with BN Host Protocol support |
| Communication Protocols | BN Host Protocol and BN TDI Protocol |
| Maximum Rack Address | Up to 127 addresses |
Eddy Current Probe Scaling and Rotor Dynamics Data Handling
The 3500/22 TDI module receives dynamic and steady-state measurement data from 3500 monitoring modules. Additionally, it transfers transient waveform information for machinery analysis through Ethernet communication.
The module supports Keyphasor based speed tracking and vector measurements. Therefore, it can collect startup and coastdown data using machine speed or time-based recording intervals.
For Bently Nevada vibration monitoring applications, the TDI supports measurement data processing related to eddy-current probe scaling, gap voltage validation, and rotor dynamics evaluation. The module maintains signal timing relationships required for shaft vibration and position analysis.
Frequently Asked Questions
Q: Does the 3500/22 module perform the primary machinery shutdown function?
A: No. The 3500/22 provides data interface and communication functions. The primary protection logic remains within the dedicated monitoring modules.
Q: How many Keyphasor inputs can the module support?
A: The module supports up to 4 Keyphasor signals for speed measurement and vector data processing.
Q: What communication interfaces are available for host software connection?
A: The module supports Ethernet communication through RJ-45 10Base-T / 100Base-TX or fiber communication through the 100Base-FX option. Additionally, it provides a USB-B front panel interface for local communication.
Field Installation Guidelines
Install the 3500/22 module in the designated TDI rack slot adjacent to the power supply modules. Confirm that the rack backplane connector is fully engaged before applying system power.
Use shielded communication cables for Ethernet and serial connections where required by the installation environment. Maintain separation between signal wiring and high-current power conductors to reduce electromagnetic interference.
Verify rack configuration settings through the system software before placing the module into RUN mode. Check front panel LED indicators after installation to confirm operating status and communication activity.
For machinery monitoring systems using eddy-current probes, verify probe wiring polarity, cable shielding, and gap voltage conditions before collecting transient data.
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