Bently Nevada 3500/25 125800-01 Keyphasor I/O Module

Bently Nevada 3500/25 125800-01 Keyphasor I/O Module

The Bently Nevada 3500/25 125800-01, cataloged as the Keyphasor I/O Module with Internal Terminations, operates as a dedicated rear-rack hardware component designed to route transducer signals and supply power to proximity probes within 3500 Machinery Protection System platforms.

Hardware Specifications

Rotor Dynamics and Transient Data Interface Scaling

Operating as the rear-rack termination and power distribution gateway for the 3500/25 system, this I/O module accepts raw input signals directly from proximity probes or magnetic pickups without requiring external barrier strips. It delivers a regulated -24 V DC power supply (up to 40 mA per channel) to drive connected transducers while routing conditioned signals to the front-slot Keyphasor processor card. This architecture ensures precise phase and rotational speed references (1X and 2X vectors) are securely delivered to monitor modules and System 1 diagnostic software for advanced rotor dynamics analysis.

Frequently Asked Questions

• Q: What is the primary function of the 3500/25 125800-01 module?
  • A: It serves as the rear I/O termination card with internal terminal blocks, routing transducer signals and supplying -24 V DC power to proximity probes for Keyphasor generation.
• Q: How many channels of transducer power does the module supply?
  • A: It provides -24 V DC power at a maximum of 40 mA per channel to support connected proximity transducers.

Field Installation Guidelines

• Slot Placement: Install the 3500/25 125800-01 module into the designated rear-rack position directly aligned with its corresponding front-slot Keyphasor processor card.
• Internal Wiring: Route field signal wires directly to the internal terminal blocks, maintaining proper shielding practices to eliminate electromagnetic interference.
• System Verification: Measure transducer gap voltages directly at the terminals and verify power supply output stability prior to activating monitoring functions.