Bently Nevada 3500/53 Electronic Overspeed Detection System

The Bently Nevada 3500/53-02-00 overspeed module delivers precise machinery protection for critical rotating equipment in demanding industrial environments.

Manufacturer & Product Identity

• Manufacturer: Bently Nevada, a trusted global leader in machinery protection systems.
• Product Type: 3500/53 Electronic Overspeed Detection System for turbine and compressor safety.
• Model Number: 3500/53-02-00 with two-channel overspeed monitoring architecture.
• Country of Origin: Made in U.S.A for consistent industrial-grade reliability.

Tree-Style Ordering Structure

• 3500/53-02-00
  • Channel Option
    • 02 → Two-channel overspeed detection configuration.
  • Agency Approval
    • 00 → Standard version without hazardous area certification.

Core Measurement & Input Performance

• Input Signal Range: Accepts +10.0 V to −24.0 V for proximity probes or magnetic pickups.
• Input Impedance: 20 kΩ ensures stable signal acquisition and minimal loading.
• Overspeed Voting: Supports 2-out-of-2 and recommended 2-out-of-3 logic architectures.
• Frequency Capability: Handles high-speed pulse inputs suitable for turbine applications.

Environmental & Electrical Characteristics

• Power Consumption: Typical 8.0 W for efficient rack-level operation.
• Operating Temperature: −30 °C to +65 °C for harsh industrial sites.
• Storage Temperature: −40 °C to +85 °C for safe long-term storage.
• Humidity Tolerance: Up to 95% non-condensing for reliable field performance.

Output Interfaces & Signal Handling

• Buffered Outputs: Front-panel coaxial connectors with ESD and short-circuit protection.
• Output Impedance: 550 Ω for stable signal transmission.
• Transducer Supply: −24 Vdc at 40 mA maximum for connected sensors.
• Recorder Output: 4–20 mA proportional to full-scale speed range.

Relay System & Protection Logic

• Relay Type: SPDT relays with epoxy sealing for long service life.
• Switching Capacity: Up to 600 VA AC or 120 W DC for trip circuits.
• Contact Ratings: 5 A maximum with selectable energized states.
• Arc Suppression: Built-in 250 Vrms suppressors reduce electrical wear.

Front Panel Status Indication

• OK LED: Confirms normal module operation during runtime.
• TX/XR LED: Shows active communication within the 3500 rack.
• Bypass LED: Indicates maintenance bypass status clearly.
• Test Mode LED: Confirms active diagnostic testing state.

Installation & Mechanical Details

• Module Dimensions: 241.3 × 24.4 × 241.8 mm for standard 3500 rack slots.
• 133388-01 Module Weight: Approximately 0.82 kg for easy handling.
• 133396-01 I/O Module Size: Reduced depth design simplifies cabinet integration.

Packaging Contents

• One 3500/53-02-00 electronic overspeed detection module.
• Matching I/O module for rack installation.
• Standard factory protective packaging for secure transportation.

Warranty & Shipping

• Warranty: 12 months covering material and manufacturing defects.
• Shipping Methods: FedEx, UPS, and DHL for fast global delivery.

Professional FAQ

• Q1: Can this module operate independently without other 3500 components?
• A1: The module requires a compatible 3500 rack and power supply for correct operation.
• Q2: Does the system support continuous speed trending?
• A2: The recorder output provides proportional current signals for external trending systems.
• Q3: How does the module handle electrical noise in high EMI areas?
• A3: Internal signal conditioning and impedance control improve noise immunity.
• Q4: Can relay logic adapt to different shutdown philosophies?
• A4: Each relay supports selectable energized or de-energized trip configurations.
• Q5: What industries commonly deploy this overspeed system?
• A5: Power generation, oil and gas, petrochemical, and heavy rotating machinery sectors.

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