Bently 3500/25-01-01-00

Description

• Technical Specifications
  • Power Parameters: Operates on 24V DC power supply (tolerance ±10%), with a maximum power consumption of 3.2 watts. The module draws a nominal current of 133mA at 24V DC, minimizing load on the 3500 rack’s power system.
  • Input Configuration: Features two independent input channels. Non-isolated I/O supports input voltage range of -0.8V to -21.0V (peak-to-peak), while isolated I/O (optional) accepts +5V to -11V (peak-to-peak) with 1MΩ input impedance. Compatible with Bently Nevada 3300 XL proximity probes and magnetic pickups; passive magnetic sensors require a minimum shaft speed of 200 RPM.
  • Output Performance: Provides two buffered keyphasor outputs (40Vp-p maximum voltage, 504Ω maximum load, 20mA maximum current per channel). Outputs are accessible via front-panel BNC coaxial connectors and rear-panel European-style terminal blocks for flexible wiring.
  • Measurement Capabilities: Rotational speed measurement range of 0 to 10,000 RPM with ±0.05% accuracy and 0.1 RPM resolution. Frequency range covers 0.017 Hz to 20 kHz, with a fixed sampling rate of 1000 Hz for consistent data capture.
  • Physical & Environmental Ratings: Dimensions of 119.9 mm (depth) × 24.4 mm (width) × 25.4 mm (height), net weight of 0.34 kg. Operating temperature range: -30°C to +65°C (non-isolated); 0°C to +65°C (isolated). Storage temperature: -40°C to +85°C. Operates in 0–95% non-condensing humidity, with IP20 protection rating (requires rack-mounted enclosure).
  • Compliance Standards: Meets API 670 (machinery protection), IEC 61000-6-4 (electromagnetic compatibility), and NEMA TS2 (industrial control) standards. Certified for use in Class I, Division 2 hazardous locations (optional explosion-proof variant).
• Function Features
  • Dual-Channel Precision Signal Conversion: Converts analog proximity probe/magnetic pickup signals into high-integrity digital keyphasor signals, enabling precise shaft position tracking and rotational timing for vibration analysis and fault detection.
  • Seamless Rack Integration: Communicates directly with the 3500 rack via the backplane interface, eliminating the need for external wiring between the keyphasor module and monitor modules. Supports hot-swap functionality for on-site replacement without system shutdown.
  • Flexible Input/Output Options: Offers isolated and non-isolated I/O variants to accommodate different system grounding requirements. Buffered outputs ensure signal integrity when connected to multiple monitor modules or external data loggers.
  • Redundant Configuration Support: In triple modular redundancy (TMR) systems, two modules can be paired to provide primary and secondary keyphasor signals, ensuring continuous operation even if one module fails.
  • Intuitive Status Monitoring: Front-panel LED indicators (OK, TX/RX, Channel 1/2 Active) provide real-time visibility of module health, communication status, and signal reception, enabling rapid troubleshooting.
  • Signal Protection Mechanisms: Built-in overvoltage and short-circuit protection for input/output circuits prevents module damage from electrical anomalies, extending operational lifespan in industrial environments.
• Application Scenarios
  • Power Generation Industry: Deployed in thermal, hydro, and nuclear power plants to monitor steam turbines, generators, and feedwater pumps. Provides keyphasor data for 1X vibration analysis, helping detect shaft misalignment, bearing wear, and rotor imbalance before critical failures occur.
  • Oil & Gas Industry: Installed on offshore drilling rigs, pipeline compressors, and centrifugal pumps. Withstands high vibration, temperature fluctuations, and corrosive environments, ensuring reliable shaft monitoring during oil/gas extraction, transportation, and processing.
  • Petrochemical Industry: Used to monitor rotating equipment (gearboxes, agitators, reaction tower pumps) in refineries and chemical plants. The isolated I/O variant prevents ground loops in complex control systems, while hazardous location certification supports use in flammable/explosive environments.
  • Metallurgical Industry: Applied to rolling mills, blast furnace fans, and air compressors in steel plants. Operates reliably in high-temperature, dusty conditions, providing continuous shaft position data to prevent unplanned downtime in continuous production processes.
  • Heavy Machinery Manufacturing: Integrated into test benches for large motors, turbines, and industrial pumps. Delivers precise keyphasor signals during product validation, enabling manufacturers to optimize design and verify performance against specifications.
  • Marine & Naval Applications: Used in ship propulsion systems, marine turbines, and auxiliary pumps. The compact design and rugged construction withstand the harsh marine environment, ensuring reliable machinery protection during long-duration voyages.