Bently Nevada 3500/25 126648-02+128718-01 I/O Module + Phase Key External Terminal Module

Applications

Engineered for high-precision rotating machinery monitoring, this combined I/O Module and Phase Key External Terminal Module is widely applied in environments where accurate phase reference and speed signals are critical:

• Steam and gas turbine keyphasor signal processing

• Generator shaft phase reference and speed tracking

• Compressor and pump rotational diagnostics

• Overspeed protection and synchronization systems

• Continuous condition monitoring in power, oil & gas, and petrochemical plants

Advantages

This integrated module-and-terminal solution offers both technical reliability and installation efficiency:

• Complete signal chain solution combining I/O and external termination

• Isolated key phase input ensures stable, noise-resistant measurements

• External terminal module simplifies field wiring and maintenance

• Optimized for seamless operation within the Bently Nevada 3500 platform

• Industrial-grade design suitable for harsh, high-vibration environments

Technical FAQs

1. What does this combined configuration include?
   It includes the 3500/25 Isolated Key Phase I/O Module (126648-02) and the Phase Key External Terminal Module (128718-01).

2. Why use an external terminal module?
   It allows safer, cleaner field wiring and easier maintenance without disturbing the main rack.

3. Is the key phase input electrically isolated?
   Yes, isolation protects signal integrity and prevents ground loop issues.

4. Which sensors are supported?
   Proximity probes and magnetic pickup sensors commonly used for keyphasor signals.

5. Can this setup be used for speed measurement?
   Yes, it supports accurate speed and phase reference measurement.

6. Is this solution suitable for critical machinery protection?
   Absolutely, it is designed for continuous-duty, mission-critical monitoring systems.

7. Does the external terminal affect signal accuracy?
   No, it is designed to preserve signal fidelity while improving wiring organization.

8. Is hot replacement possible?
   In properly configured systems, maintenance can be performed with minimal downtime.

9. Which 3500 racks are compatible?
   Standard Bently Nevada 3500 system racks.

10. What industries typically deploy this configuration?
    Power generation, oil & gas, refining, heavy manufacturing, and mining.