3500/53-03-00 Bently Nevada Overspeed Detection System
3500/53-03-00 is a high-reliability overspeed protection module for critical rotating equipment.
It belongs to the 3500/53 system.
It monitors shaft speed and triggers alarms or shutdown when limits are exceeded.
Ideal for turbines, compressors, and high-speed machinery.
Download the manual now to understand full system setup and protection logic.
Configuration Breakdown (Structured View)
- Model: 3500/53-03-00
- Code Structure:
- 3500/53
- → Electronic Overspeed Detection System
- AXX (Channel Option)
- 03 → Three Channel System
- BXX (Approval Option)
- 00 → No agency approval
- 3500/53
Signal Input Architecture
- Accepts input from proximity probes or magnetic pickups.
- Signal range: +10V to -24V.
- Input impedance: 20 kΩ.
- Internal signal limiting protects the module.
- Compatible with multiple Bently Nevada sensors.
Output and Relay System
- Buffered transducer output with coaxial connector.
- Output impedance: 550 Ω.
- Recorder output: 4–20 mA.
- Relay type: SPDT.
- Max switching current: 5A.
- Supports normally energized or de-energized mode.
LED Status Indicators
- OK LED shows normal operation.
- TX/RX LED shows communication status.
- Bypass LED shows bypass condition.
- Test LED shows test mode.
- Alarm LEDs show fault or overspeed condition.
Performance and Power
- Power consumption: 8W typical.
- Resolution: high precision current output.
- Fast update rate: about 100 ms.
- Stable operation for real-time protection.
Environmental and Mechanical Data
- Operating temperature: -30°C to +65°C.
- Storage temperature: -40°C to +85°C.
- Humidity: up to 95% non-condensing.
- Monitor module weight: 0.82 kg.
- Compact rack-mounted design.
Oiltech Controls Limited’s Insight
- 3500/53 systems are widely used in critical machinery protection.
- The three-channel design improves safety redundancy.
- Fast response helps prevent catastrophic equipment damage.
- Relay outputs enable direct shutdown control.
- Engineers trust this module for turbine safety systems.
- Reliable performance reduces unplanned downtime.
Suitable Equipment and Applications
- Steam and gas turbines.
- Compressors and rotating machinery.
- Power generation plants.
- Oil and gas processing systems.
- High-speed industrial equipment.
Diagnostic Capability
- Real-time overspeed monitoring.
- LED indicators provide quick status check.
- Alarm relays trigger system shutdown.
- Buffered outputs support signal analysis.
- Improves maintenance decision accuracy.
Shipping and Warranty
- 12-month warranty included.
- Fast global delivery via FedEx, DHL, UPS.
- Secure packaging for industrial modules.
- Tracking available after shipment.
Professional FAQ
- Why is overspeed protection critical for turbines?
- Overspeed can damage equipment. This module stops machines in time.
- How many channels are recommended for safety systems?
- Three channels offer better redundancy and higher safety level.
- What sensors work best with this module?
- Use proximity probes or magnetic pickups based on application.
- How should engineers set alarm thresholds?
- Set limits based on machine rated speed and safety margin.
- What is a common field installation tip?
- Ensure proper grounding and avoid signal noise for accurate readings.
Contact Information
- Email: info@oiltechcontrols.com
- WhatsApp: +86 158 8020 0923
- Original Source: https://www.oiltechcontrols.com/
- Copyright © 2026 Oiltech Controls Limited. All rights reserved.
- All rights reserved.




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