The Bently Nevada 103928-02, also cataloged as the 103928-02 Keyphasor Input Board, operates as a dedicated hardware component for phase reference signal acquisition within the TDXnet Transient Data Interface system.
Hardware Specifications
Parameter
Specification
Model
103928-02
Brand
Bently Nevada
Product Type
Keyphasor (KPH) Input Board / PWA
System Platform
TDXnet Transient Data Interface
Signal Input Type
Keyphasor phase reference signals from proximity probes or magnetic pickups
Signal Processing
Analog signal acquisition and digital conversion
Supported Data
Static data, orbit data, spectrum data, transient startup and shutdown data
Communication Interface
Ethernet link to Data Manager through TDXnet architecture
Data Buffer
Two independent startup/shutdown buffers
Origin
USA
Eddy-Current Probe Scaling and Rotor Dynamics Processing
The 103928-02 receives Keyphasor timing pulses from eddy-current probes or compatible speed reference sensors. Therefore, the board provides phase synchronization data for shaft position analysis, orbit calculation, and transient machinery evaluation.
The module supports precise reference timing within the TDXnet data acquisition path. Moreover, it allows the monitoring system to correlate vibration signals with shaft rotational position during normal operation, startup, and shutdown conditions.
The Keyphasor input architecture applies signal conditioning methods for stable phase measurement. In addition, the system supports rotor dynamics analysis by maintaining accurate timing relationships between vibration channels and shaft reference events.
Frequently Asked Questions
Q: What type of field signals does the 103928-02 Keyphasor Input Board process? A: The board processes Keyphasor phase reference signals generated by compatible proximity probes or magnetic pickup devices. It converts the input signals for TDXnet transient monitoring functions.
Q: Does the 103928-02 provide direct Ethernet communication? A: The board operates as an internal TDXnet hardware component. Ethernet communication occurs through the TDXnet interface architecture and Data Manager connection.
Q: Can the module support startup and shutdown data collection? A: Yes. The module operates within the TDXnet system that provides two independent startup/shutdown data buffers for transient event recording.
Field Installation Guidelines
Install the 103928-02 board only in compatible Bently Nevada TDXnet hardware configurations.
Verify connector alignment and seating before system power application.
Route Keyphasor signal wiring separately from high-current power cables to reduce electrical interference.
Maintain proper shield termination practices for field sensor cables according to site grounding standards.
Confirm probe wiring polarity and signal continuity before commissioning.
Verify Keyphasor signal amplitude and phase reference behavior during system startup testing.
