Engineered for Accurate Rotational Timing and Signal Isolation

The Bently Nevada 3500/25-01-04-00 Enhanced Keyphasor Module is a high-performance rotational reference module designed for the Bently Nevada 3500 Machinery Protection System. This enhanced two-channel module receives signals from magnetic pickup sensors or proximity transducers and converts them into highly accurate digital Keyphasor signals used for shaft speed, phase reference, and synchronized vibration analysis. It plays a critical role in ensuring precise timing information for machinery protection and advanced condition monitoring.

The 3500/25-01-04-00 configuration features an Isolated I/O Module with Internal Terminations, specifically designed for magnetic pickup applications. The isolated circuitry helps eliminate electrical interference and ground loop issues when Keyphasor signals are shared with multiple control or monitoring systems, making it an excellent solution for demanding industrial environments.

Technical Specifications

Technical FAQs

1. What is the main function of the 3500/25-01-04-00 Enhanced Keyphasor Module?

It converts signals from magnetic pickups or compatible proximity probes into digital Keyphasor signals that provide accurate shaft speed and phase reference information for the 3500 Machinery Protection System.

2. What does the "01-04-00" configuration represent?

This configuration specifies a single half-height two-channel Keyphasor module with an Isolated I/O Module featuring Internal Terminations, and no agency approval option.

3. Why is an isolated I/O module beneficial?

The isolated I/O module electrically isolates the input channels from the rack and external systems, helping prevent ground loops and electrical interference when signals are connected to multiple devices.

4. Which sensors are recommended for this configuration?

This version is specifically designed for magnetic pickup sensors. It can also work with Proximitor® transducers when an external power supply is used.

5. How many input channels are available?

The module provides two independent Keyphasor input channels, supporting accurate rotational reference measurements for critical machinery.

6. Can this module replace older 3500 Keyphasor modules?

Yes. The Enhanced Keyphasor Module maintains complete backward compatibility with previous-generation 3500 Keyphasor modules, simplifying system upgrades.

7. Does the isolated version affect phase measurements?

The isolated I/O module supports phase measurements but introduces a slightly greater phase shift than the standard non-isolated version due to the isolation circuitry.

8. What are the module dimensions and weight?

The module measures 119.9 × 24.4 × 256.5 mm and weighs approximately 0.34 kg, allowing installation in a standard half-height 3500 rack position.

9. Does the module support firmware upgrades?

Yes. Field-upgradable firmware enables feature improvements and simplifies long-term maintenance without replacing the hardware.

10. Why choose the Bently Nevada 3500/25-01-04-00?

Its isolated signal conditioning, high-accuracy rotational reference capability, compact design, and seamless integration with the 3500 Machinery Protection System make it an excellent choice for demanding rotating equipment protection applications.