Bently Nevada 3500/25-02-01-CN 3500/25 Enhanced Keyphasor Module

Description

The 3500/25 is a half-height, two-channel instrument rack component that processes raw sensor inputs to provide precise timing signals for the 3500 Series Machinery Protection System. This specialized enhanced keyphasor module transforms incoming waveforms from proximity probes or magnetic pickups into digital pulses aligned exactly with the alignment mark on a rotating shaft. By delivering accurate once-per-turn or multi-event-per-turn indicators, the unit enables adjacent monitoring cards and external diagnostic software to calculate rotational velocity, phase angles, and synchronized 1X vibration vectors.

The standard hardware framework accommodates up to four independent inputs during basic operating configurations, and scales up to eight input nodes when utilizing a paired layout arrangement across adjacent slots. For high-reliability environments necessitating Triple Modular Redundant (TMR) safety layers, two modules operate concurrently in parallel to supply a uninterrupted stream of primary and secondary synchronization pulses directly across the chassis backplane.

Features

• Processes dual transducer source channels within a single half-height slot allocation.
• Provides downward form, fit, and functional compatibility to directly replace legacy 125792-01 assemblies.
• Translates multi-event pulse configurations into standard once-per-turn reference outputs.
• Equipped with dual buffered outputs accessible on both the front panel and rear terminal frames.
• Supports field-upgradeable firmware routines alongside native asset management metrics.

Applications

• High-velocity steam turbine and industrial compressor phase tracking line architectures.
• Synchronous machinery vibration vector diagnostics and rotative speed monitoring systems.
• Triple Modular Redundant (TMR) safety-critical monitoring configurations within chemical process plants.

Ordering Information

Technical Specifications

Connections/Interfaces

Installation Guidelines

• Rack Insertion Rules: Slide the half-height front card into any of the 14 available standard slot spaces using a specialized card adapter alignment tool.
• Chassis Density Controls: Limit total system deployment to a maximum of two active main modules per single rack frame, separating them between top and bottom half-slot levels.
• Electrostatic Discharge Protection: Personnel must connect a verified single-use grounding wrist strap to the rack chassis ground before manipulating interior logic boards.
• Termination Restraints: Ensure that external termination blocks are never cross-connected into rear cards configured for internal termination architecture.

Compliance and Certifications

• FCC Rules: Complies with Part 15 regulations regarding high-frequency emissions containment.
• European EMC Directive: 2014/30/EU; enforcing compliance with EN 61000-6-2 and EN 61000-6-4 industrial benchmarks.
• Low Voltage Directive: 2014/35/EU; certified via compliance testing under EN 61010-1 parameters.
• Maritime Approvals: Formally certified under DNV GL classification rules alongside ABS Steel Vessels and Offshore Structures standards.
• RoHS Directives: Certified under standard EU RoHS Directive 2011/65/EU and China RoHS frameworks.