Description
BENTLY 85515-02 Turbine Overspeed Protection Module
1. Product Description
The BENTLY 85515-02 is a high-reliability overspeed protection module designed for critical rotating machinery, such as gas turbines and compressors. As part of the BENTLY 3500 modular monitoring system, it provides real-time speed measurement, alarm triggering, and shutdown capabilities to prevent catastrophic overspeed events. The module supports dual-channel inputs for redundancy, hot-swap functionality for maintenance flexibility, and integrates seamlessly with BENTLY’s System 1 software for advanced condition analysis. Its compact design and rugged construction make it suitable for harsh industrial environments, ensuring continuous operation in power generation, oil & gas, and manufacturing sectors.
The BENTLY 85515-02 is a high-reliability overspeed protection module designed for critical rotating machinery, such as gas turbines and compressors. As part of the BENTLY 3500 modular monitoring system, it provides real-time speed measurement, alarm triggering, and shutdown capabilities to prevent catastrophic overspeed events. The module supports dual-channel inputs for redundancy, hot-swap functionality for maintenance flexibility, and integrates seamlessly with BENTLY’s System 1 software for advanced condition analysis. Its compact design and rugged construction make it suitable for harsh industrial environments, ensuring continuous operation in power generation, oil & gas, and manufacturing sectors.
2. Technical Parameters
| Parameter | Specification |
|---|---|
| Input Voltage | 24 VDC ±10% (for module operation) |
| Power Supply | 20–34 VDC or 90–140 VDC (external input) |
| Channels | Dual-channel (A and B) for redundant protection |
| Speed Range | 0–100,000 RPM (configurable) |
| Alarm Outputs | 4 solid-state relays (2 per channel) |
| Communication | Modbus RTU (RS-485) for integration with PLC/DCS |
| Operating Temperature | -40°C to +70°C |
| Compatibility | BENTLY 3500 racks, System 1 software |
BENTLY 85515-02
3. Advantages and Features
- Dual-Channel Redundancy: Ensures fail-safe operation by comparing two independent speed signals.
- Hot-Swap Capability: Allows replacement without system downtime, reducing maintenance costs.
- Precision Speed Monitoring: Uses advanced algorithms to detect overspeed within milliseconds.
- Customizable Alarms: Configurable setpoints for pre-trip warnings and emergency shutdowns.
- Wide Voltage Range: Supports both low and high DC input voltages for versatile applications.
4. Application Fields and Case Studies
- Energy: Protecting gas turbines in power plants during load fluctuations.
- Oil & Gas: Monitoring compressor trains in offshore platforms.
- Manufacturing: Preventing overspeed in high-speed rotating equipment.
Case Study: A petrochemical plant avoided $2M in potential damages by deploying the 85515-02 to trigger emergency shutdowns during unexpected speed surges in their centrifugal compressors.
BENTLY 85515-02
5. Competitor Comparison
The 85515-02 outperforms alternatives with:
The 85515-02 outperforms alternatives with:
- Built-in redundancy for SIL 2 compliance, reducing the need for external safety modules.
- Faster response time (≤10 ms) compared to legacy overspeed systems.
- Compatibility with BENTLY’s comprehensive System 1 analytics suite for predictive maintenance.
6. Selection Recommendations
- System Integration: Pair with BENTLY 3500 racks for unified machinery health monitoring.
- Safety Requirements: Choose the dual-channel version for applications requiring SIL 2 certification.
- Expansion Needs: Ensure rack space for future additions like vibration or temperature modules.
7. Precautions
- Power Stability: Use a filtered power supply to avoid voltage spikes.
- Sensor Calibration: Verify proximity probe alignment and signal integrity before commissioning.
- Firmware Updates: Regularly update to access new features and security patches.
Shanxi Runsheng Import and Export Co., LTD. Our main products: FOXBORO, EMERSON, TRICONEX, XYCOM, BENTLY, ROCKWELL, ABB, GE, Allen-Bradley, YOKOGAWA, HONEYWELL, RELIANCE, SCHNEIDER, MODICON, Westin ghouse, WOODWARD, Motorola, Rexroth, SEW, Denkon. And other major brands of DCS, PLC, robot, large servo four system spare parts. Other automation spare parts sales and technical support. Please visit our website www.rsmodules.com or contact us at +86 15383514022 and we will be happy to serve you.
