3500/25 125800-01 Monitoring Control Card/BENTLY

The 3500/25 Enhanced Keyphasor Module is a crucial component within the 3500 Machinery Protection System, designed to provide precise Keyphasor signals to monitor modules in a 3500 rack. This half-height, two-channel module plays a pivotal role in enhancing the system’s ability to measure shaft rotative speed and vector parameters.

Key Features:

1. Digital Keyphasor Signal Generation:
   • The module receives input signals from proximity probes or magnetic pickups and converts them into digital Keyphasor signals. These signals indicate the alignment of the Keyphasor mark on the rotating shaft with the Keyphasor transducer.
2. Signal Configuration:
   • The 3500 Machinery Protection System supports up to four Keyphasor signals in a standard configuration and up to eight Keyphasor signals in a paired configuration.
3. Timing Precision:
   • Keyphasor signals are once-per-turn or multiple-event-per-turn pulses, providing precise timing measurements essential for monitoring shaft rotative speed and vector parameters such as 1X vibration amplitude and phase.

Enhancements Over Previous Design:

1. Expanded Signal Processing:
   • The Enhanced Keyphasor Module improves upon the previous design by offering expanded signal processing capabilities, ensuring more accurate and detailed monitoring of rotating machinery.
2. Downward Compatibility:
   • While introducing enhancements, the module maintains complete downward compatibility in terms of form, fit, and function with existing Keyphasor modules. This allows for seamless integration into legacy systems.

Module Replacement: The Keyphasor module, PWA 125792-01, is entirely replaced by the updated 149369-01 module. This replacement ensures that users can benefit from the advanced features and capabilities of the Enhanced Keyphasor Module while preserving compatibility with existing systems.

Triple Modular Redundancy (TMR) Configuration:

1. Dual Keyphasor Modules:
   • In Triple Modular Redundant (TMR) applications, the 3500 system is recommended to employ two Keyphasor modules.
   • The modules work in parallel, providing both a primary and secondary Keyphasor signal to the other modules in the rack, ensuring redundancy and reliability.

Conclusion: The 3500/25 Enhanced Keyphasor Module represents a significant advancement in shaft monitoring within the 3500 Machinery Protection System. With its digital Keyphasor signal generation, expanded capabilities, and compatibility with legacy systems, this module plays a crucial role in ensuring the reliability and performance of rotating machinery in diverse industrial applications.