Bently Nevada 3500/50M 288062‑02 Tachometer Keyphasor Module
The Bently Nevada 3500/50M 288062‑02 is a dual‑channel tachometer and Keyphasor module for the 3500 machinery protection system. It accepts pulse signals from magnetic pickups or proximity probes, measures shaft rotational speed, acceleration and rotation direction, and provides conditioned Keyphasor reference signals to the rack back‑plane for other monitoring modules to complete phase‑related rotating‑machine measurement tasks.
This hot‑swappable rack‑slot module supports configurable alarm set‑points for overspeed, zero‑speed and reverse rotation. It is configured by 3500 rack configuration software, equipped with front‑panel LED channel status indicators. Widely used as aftermarket spare part for steam turbine, gas turbine and large rotating equipment protection cabinet maintenance and retrofitting projects.
Main Specifications
- Brand: Bently Nevada (Baker Hughes); Model:3500/50M 288062‑02; Type:Dual‑Channel Tachometer Keyphasor Module
- Applicable System: Bently Nevada 3500 machinery protection monitoring rack system
- Input:Proximity probe / magnetic pickup pulse signal; 2 independent channels; support hot‑swap operation
- Function:Shaft speed measurement, acceleration & rotation‑direction detection, Keyphasor signal output, overspeed / zero‑speed / reverse‑rotation alarm, channel fault diagnosis
- Feature:Rack slot‑mount installation, software configurable parameters, front‑panel LED status indication, back‑plane Keyphasor signal distribution
- Installation:Plug‑in onto 3500 series rack chassis, matched with corresponding rear I/O termination module
- Operating Environment:‑40℃ ~ +70℃, 5%‑95% RH non‑condensing
- Certifications: CE compliant for rotating‑machinery protection automation applications
Core Functions
- Receive pulse signals from magnetic pick‑ups or proximity probes to realize accurate real‑time shaft rotational‑speed measurement.
- Monitor rotor acceleration and rotation direction, trigger alarm when overspeed, zero‑speed or reverse‑rotation occurs according to configured thresholds.
- Output conditioned Keyphasor reference signal to rack back‑plane for vibration and phase‑analysis of other monitoring modules.
- Support parameter configuration via 3500 rack configuration software for different rotating‑machinery working‑condition requirements.
- Detect channel signal loss and module hardware faults, upload alarm information for equipment health‑management and maintenance prompting.
- Hot‑swap capability supports online module replacement without system shutdown during cabinet overhaul and on‑site troubleshooting work.
Application Scenarios
- Speed & Keyphasor measurement component for Bently Nevada 3500 rotating‑machinery protection monitoring systems.
- Critical spare‑part for thermal‑power‑plant steam‑turbine, gas‑turbine and large‑compressor protection cabinet maintenance.
- Retrofit and spare replacement for legacy 3500/50M tachometer‑module machinery‑protection‑system upgrade projects.
- 3500 rack overhaul, speed‑probe‑loop debugging and faulty tachometer‑keyphasor‑module replacement tasks.
- Spare‑parts inventory for power‑automation integrators and rotating‑machinery‑engineering contractors.
- Global aftermarket spare supply for technical teams maintaining Bently Nevada 3500 machinery‑protection automation hardware.