
Product Overview
The Bently Nevada 3500/50 (286566-02) is a high-accuracy Tachometer Module engineered for real-time rotational speed monitoring in industrial rotating machinery. As part of the Bently Nevada 3500 Series, this module provides reliable RPM measurement and signal processing to support machinery protection systems and predictive maintenance strategies.
Designed for continuous industrial operation, the 286566-02 ensures stable performance in demanding environments, helping to protect turbines, compressors, pumps, and other critical equipment from overspeed and abnormal operating conditions.
Technical Specifications
| Parameter |
Details |
| Manufacturer |
Bently Nevada |
| Model |
3500/50 |
| Part Number |
286566-02 |
| Product Type |
Tachometer Module |
| Function |
Rotational speed (RPM) monitoring |
| Dimensions |
241.3 × 24.4 × 241.8 mm |
| Weight |
0.82 kg |
| Installation |
Rack-mounted (3500 system rack) |
| Power Supply |
Backplane-powered |
| Signal Input |
Magnetic pickups, proximity probes, speed sensors |
| Signal Output |
Conditioned tachometer signals to monitoring and protection systems |
| Application |
Rotating machinery speed monitoring |
| Operating Environment |
Industrial-grade, continuous operation |
Function and Working Principle
The 3500/50 (286566-02) module measures and processes rotational speed signals with high precision:
- Accepts input signals from magnetic pickups, proximity probes, or speed sensors
- Amplifies and filters signals to ensure accurate RPM calculation
- Converts raw signals into conditioned outputs for system integration
- Provides real-time speed feedback to control and protection systems
- Detects overspeed and abnormal rotational behavior for early fault prevention
This ensures accurate speed monitoring and enhances overall machinery protection.
Role in Industrial Control Systems
Within the Bently Nevada 3500 system, the 286566-02 module:
- Continuously monitors rotational speed of critical machinery
- Provides early detection of overspeed conditions
- Supplies reliable data to control and protection systems
- Integrates efficiently with multiple sensor inputs
- Supports predictive maintenance and reduces unplanned downtime
It is a key component in ensuring safe and efficient operation of rotating equipment.
Industrial Applications
The 3500/50 (286566-02) module is widely used in:
- Gas and steam turbine systems
- Industrial compressors and pumps
- Oil & gas and petrochemical facilities
- High-speed rotating equipment monitoring
- Continuous process industries requiring precise RPM measurement
Its rugged construction ensures dependable performance in harsh industrial environments.
Installation and System Integration
Installation guidelines:
- Mounted in a Bently Nevada 3500 system rack
- Connected to magnetic pickups, proximity probes, or speed sensors
- Integrated with I/O modules and protection systems
- Powered through the rack backplane
- Calibration required for accurate speed measurement
Proper installation ensures reliable operation and precise monitoring.
Compatible System Components
This module integrates with:
- 3500/50 Tachometer I/O modules (e.g., 133442-01)
- Magnetic pickup sensors and proximity probes
- Preamplifier modules
- Communication and relay modules
- 3500 Series rack chassis and backplane power supplies
Together, these components form a complete rotational speed monitoring system.
Recommended Alternative Models
| Model |
Type |
Key Feature |
Application |
| 134938-01 |
Tachometer Module |
Standard RPM monitoring |
General machinery |
| 133388-02 |
Tachometer Module |
Widely used speed monitoring |
Turbines and compressors |
| 133388-02 + 133442-01 |
Tachometer + I/O |
Integrated signal routing |
Complex systems |
| 133442-01 |
I/O Module |
Sensor signal interface |
System integration |
| 3500/42M |
Monitoring Module |
Multi-parameter monitoring |
Rotating machinery |
Key Advantages
- High-accuracy real-time rotational speed monitoring
- Reliable signal amplification and conditioning
- Continuous operation in industrial environments
- Early detection of overspeed and abnormal conditions
- Seamless integration with multiple sensors
- Supports predictive maintenance and machinery protection
- Compact rack-mounted design (0.82 kg)
- High reliability for critical applications
Technical FAQs
What is the primary function of the 286566-02 module?
It measures and monitors the rotational speed (RPM) of industrial machinery.
Which sensors are compatible?
Magnetic pickups, proximity probes, and other speed sensors.
Where is it installed?
Installed in a 3500 system rack as part of a complete monitoring system.
Does it support predictive maintenance?
Yes, it provides real-time RPM data for early detection of abnormal conditions.
Conclusion
The Bently Nevada 3500/50 (286566-02) Tachometer Module is a reliable and high-performance solution for industrial speed monitoring. With precise signal processing, robust construction, and seamless integration into the 3500 series system, it enhances machinery protection, operational safety, and predictive maintenance capabilities in demanding industrial environments.