Product Overview
The Bently Nevada 126648-02 Isolated Keyphasor I/O Module is an advanced signal interface component within the 3500 Machinery Protection System. It provides reliable signal isolation for Keyphasor inputs, enabling safe connection to multiple monitoring and control systems without interference or ground loops.
This module is primarily optimized for Magnetic Pickup applications but also supports Proximitor® sensors when an external power supply is available. Moreover, its rugged construction ensures stable performance across a wide temperature range, ideal for industrial environments with fluctuating conditions.
Functional Advantages
The 126648-02 module enhances monitoring accuracy while preventing signal distortion between interconnected systems. It ensures Keyphasor data integrity, which is essential for accurate shaft speed and position measurement in rotating machinery.
Key Benefits:
- Provides full galvanic isolation for Keyphasor signals.
- Reduces ground loop issues in parallel monitoring configurations.
- Supports Magnetic Pickup and Proximitor® sensors (with external power).
- Operates reliably from -30°C to +65°C in harsh industrial setups.
- Compact size simplifies installation and module replacement.
In addition, it offers phase measurement capability, although with slightly increased phase shift compared to the non-isolated version—making it best suited for speed rather than phase-critical applications.
Detailed Specifications
| Parameter | Description |
|---|---|
| Part Number | 126648-02 |
| Module Type | Isolated Keyphasor I/O Module |
| Primary Function | Signal isolation and distribution for Keyphasor systems |
| Supported Sensors | Magnetic Pickup (default), Proximitor® (with external power) |
| Phase Capability | Supports phase measurement with slight phase shift |
| Operating Temperature | -30°C to +65°C (-22°F to +150°F) |
| Storage Temperature | -40°C to +85°C (-40°F to +185°F) |
| Humidity | 95%, non-condensing |
| Dimensions (H × W × D) | 241.3 × 24.4 × 103.1 mm (9.50 × 0.96 × 4.06 in) |
| Weight | 0.46 kg (1.01 lb) |
| Rack Compatibility | Fits 3500 series full-height slot |
| Design Note | External terminations for flexible wiring options |
Therefore, this I/O module is an ideal replacement or upgrade choice for systems requiring robust signal isolation and high reliability in rotational monitoring setups.
System Integration Use Cases
The Bently Nevada 126648-02 integrates seamlessly into the 3500 rack-based monitoring platform, supporting critical turbomachinery protection and diagnostic functions.
Typical Integration Examples:
- Shaft speed and phase reference systems
- Compressor and turbine speed synchronization
- Machinery protection and control systems requiring isolated signal sharing
- Redundant control architectures preventing electrical interference
Furthermore, it ensures accurate and interference-free Keyphasor transmission when multiple monitoring devices are used in parallel.
Details
| Weight | 0.46 kg |
|---|
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