Description
Bently Nevada 3500/25-01-01-00 Enhanced Keyphasor Module Technical Profile
1. Product Details
- Core Identity: A half-height, dual-channel Enhanced Keyphasor Module for the Bently Nevada 3500 Machinery Protection System, consisting of the front card 149369-01 and the internal termination I/O module 125800-01.
- Physical Specs: Dimensions 25.65 cm × 2.44 cm × 11.99 cm, net weight 0.34 kg, manufactured in the USA, with 12-month factory warranty.
- Electrical Specs: Power consumption 3.2W under normal operation, input signal range -0.8V to -21.0V for non-isolated I/O, operating temperature from -40°C to +85°C.
2. Primary Applications
- Rotating Machinery Monitoring: Deployed on turbines, compressors, motors, pumps, and gearboxes to deliver precise shaft phase reference signals.
- Industrial Scenarios: Widely adopted in power generation, petrochemical, metallurgy, and steel manufacturing for synchronous vibration measurement and vector analysis.
- System Compatibility: Fully integrated with the 3500 series rack, meeting API 670 standards for machinery diagnostic and protection workflows.
3. Series Model Variants
- Standard Configurations: 3500/25-01-01-00, 3500/25-01-01-CN, 3500/25-01-04-00, 3500/25-02-01-00, 3500/25-02-02-00.
- I/O Module Options: Non-isolated internal/external terminals, isolated internal/external terminals, and barrier-type internal terminals for different field wiring requirements.
- Channel & Approval Options: Supports 2 or 4 total Keyphasor input channels, with optional CSA/NRTL/C certification for hazardous area deployment.
4. Core Features
- High Reliability Design: Backward compatible with legacy Keyphasor modules, supporting TMR (Triple Modular Redundancy) parallel operation for critical safety applications.
- Flexible Signal Processing: Generates 1-per-revolution event signals from multi-event per revolution inputs, with user-adjustable trigger thresholds and hysteresis values.
- Robust Environmental Adaptability: Excellent anti-interference performance, wide dynamic speed range, and firmware upgradable on-site without hardware replacement.
5. Main Functions
- Signal Conversion: Converts raw signals from proximity probes or magnetic pickups into digital Keyphasor timing pulses.
- Speed & Phase Measurement: Delivers accurate shaft rotational speed and phase reference data for 1X amplitude/phase vector parameter calculation.
- Status Output: Provides buffered Keyphasor outputs via front-panel coaxial connectors and rear Euro-style connectors, and reports module/channel health status to the system.
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