Description
BENTLY 3500/53M Electronic Overspeed Detection Module
1. Product Description
The BENTLY 3500/53M is a high-reliability electronic overspeed detection module designed for critical rotating machinery in industrial applications. Part of the BENTLY 3500 Series, it monitors shaft speed and triggers protective actions to prevent overspeed events, ensuring compliance with API 670 and API 612 standards. The module supports dual-channel redundancy and integrates with BENTLY’s System 1 asset management platform for real-time diagnostics. Its compact design and hot-swap capability make it ideal for retrofitting or new installations in power plants, refineries, and manufacturing facilities.
The BENTLY 3500/53M is a high-reliability electronic overspeed detection module designed for critical rotating machinery in industrial applications. Part of the BENTLY 3500 Series, it monitors shaft speed and triggers protective actions to prevent overspeed events, ensuring compliance with API 670 and API 612 standards. The module supports dual-channel redundancy and integrates with BENTLY’s System 1 asset management platform for real-time diagnostics. Its compact design and hot-swap capability make it ideal for retrofitting or new installations in power plants, refineries, and manufacturing facilities.
2. Technical Parameters
| Parameter | Specification |
|---|---|
| Input Signal | -10 VDC to +10 VDC (from proximity probes or magnetic pickups) |
| Input Impedance | 20 kΩ |
| Outputs | 4–20 mA recorder signal, relay contacts, and status LEDs |
| Power Supply | 24 VDC ±10% |
| Current Consumption | 7.7 W (typical) |
| Redundancy | Supports 2-out-of-2 or 2-out-of-3 voting systems |
| Operating Temperature | -40°C to +85°C |
| Weight | 0.82 kg (1.8 lb) |
| Dimensions | 241.3 mm × 24.4 mm × 99.1 mm (9.50 in × 0.96 in × 3.90 in) |
3. Advantages and Features
- Dual-Channel Redundancy: Ensures continuous operation even if one channel fails.
- API Compliance: Meets rigorous safety standards for critical machinery protection.
- Real-Time Monitoring: Provides instantaneous speed measurements and alarm triggers.
- Hot-Swap Capability: Allows maintenance without system shutdown.
- Integrated Diagnostics: Self-tests and fault detection reduce downtime.
4. Application Fields and Case Studies
- Energy: Protecting gas turbines and generators in power plants.
- Oil & Gas: Monitoring compressors and pumps in offshore platforms.
- Manufacturing: Safeguarding high-speed rotating equipment in automotive assembly lines.
Case Study: A petrochemical plant in Saudi Arabia reduced overspeed-related incidents by 30% after deploying 3500/53M modules in their ethylene compressor trains, leveraging the module’s 2-out-of-3 voting system for enhanced safety.
5. Competitor Comparison
The 3500/53M outperforms alternatives with:
The 3500/53M outperforms alternatives with:
- Faster response time (≤5 ms vs. industry average of 10 ms).
- Built-in redundancy support without external controllers.
- Comprehensive API compliance documentation for streamlined audits.
BENTLY 3500/53M
6. Selection Recommendations
- Redundancy Needs: Pair with 3500/15 Power Supply Modules for dual-channel configurations.
- Sensor Compatibility: Use BENTLY 3300 or 7200 series proximity probes for optimal performance.
- Space Constraints: Opt for the 3500/05 Mini Rack for compact installations.
7. Precautions
- Installation: Ensure proper grounding and shielded cabling to minimize EMI interference.
- Maintenance: Regularly test relay outputs and verify software updates via System 1.
- Safety Compliance: Always follow API 670 guidelines for overspeed protection system commissioning.
