Speed & Phase Module | New Bently Nevada 128228-01

Product Overview

The Bently Nevada 128228-01 is a high-precision Keyphasor* module designed for the 3500 Machinery Protection System. This module provides the essential phase reference signals required for advanced vibration vector analysis, synchronous data acquisition, and rotational diagnostics. By processing raw inputs from proximity probes or magnetic pickups, the 128228-01 generates a clean timing pulse once per revolution. This reference enables the 3500 system to determine precise shaft speed and phase-locked vibration data for turbines, compressors, and large industrial motors. We supply this module as 100% Brand New and Original, ensuring full compliance with API 670 phase reference requirements.

Technical Specifications

The 128228-01 utilizes industrial-grade filtering to convert transducer signals into stable, TTL-level timing pulses.

Engineering Advantages

• High-Fidelity Phase Tracking: The 128228-01 converts raw transducer signals into a precise digital timing pulse. This pulse allows the monitoring system to calculate vibration vectors, which are critical for distinguishing between mechanical unbalance, shaft misalignment, and resonance-related faults.

• Exceptional Noise Immunity: Integrated industrial-grade filtering and shielding protect the module from electromagnetic interference (EMI). This ensures a stable timing reference even when the input signal comes from sensors located near large motor starters or high-voltage switchgear.

• Deterministic Speed Determination: The module facilitates real-time speed monitoring across a wide range of rotational frequencies. It provides the 3500 backplane with instantaneous updates, enabling the system to trigger speed-based alarms or shutdowns with millisecond accuracy.

• Galvanic Protection: Robust electrical isolation separates the field-side transducer inputs from the 3500 rack’s sensitive processing electronics. This barrier prevents ground loops and field transients from compromising the integrity of the entire machinery protection system.

• Seamless Diagnostics Integration: This module enables the synchronous sampling necessary for Orbit plots, Polar plots, and Bode plots. By providing a fixed phase reference, the 128228-01 allows diagnostic software to perform deep-dive analysis into rotor dynamics and transient behavior during machine startup and shutdown.

FAQs

• What is the primary role of the 128228-01 Keyphasor module?

  It generates the "Once-Per-Turn" pulse that acts as the timing baseline for the entire 3500 rack. Without this module, the system cannot perform vector-based vibration analysis or determine the phase angle of machine vibration.

• Does this module accept inputs from both proximity and seismic sensors?

  Yes. Depending on the specific system configuration and I/O pairing, the 128228-01 can process signals from proximity probes (used for phase) and seismic sensors to provide a comprehensive view of machine health.

• Is the 128228-01 compatible with all Bently Nevada 3500 racks?

  The 128228-01 is a standard component within the 3500 Machinery Protection System. It installs into a dedicated slot and must be paired with the appropriate I/O module to provide the physical terminal connections for field wiring.

• Can I use a magnetic pickup as the input source?

  Absolutely. The module accommodates various transducer types, including magnetic pickups and non-contact proximity probes, provided the sensor generates a detectable pulse once per shaft revolution.