3500/50M 286566-02 Tachometer Module

Overview

Place of Origin:	USA
Brand Name:	Bently Nevada
Model Number:	3500/50M 286566-02
Packaging Details:	Original new Factory Sealed
Delivery Time:	5-7 days
Payment Terms:	T/T
Supply Ability:	In stock

Quick Detail

Description

The 3500/50M 286566-02 Tachometer Module from Bently Nevada is a dual-channel speed monitoring module for 3500 rack automation systems. The 3500/50M 286566-02 Tachometer Module accepts up to two proximity probe or magnetic pickup inputs within +10.0 V to −24.0 V range, with 20 kΩ standard input impedance (40 kΩ TMR). It calculates shaft speed, rotor acceleration, reverse rotation, and zero speed, then compares values to configured alarm setpoints.

The 3500/50M 286566-02 Tachometer Module provides independent 4–20 mA outputs proportional to rpm or rpm/min, supporting 0–600 Ω load and 0 to +12 Vdc compliance. Resolution reaches 0.3662 µA per bit with ±0.25% error at room temperature. With 24 Vdc, 40 mA transducer supply per channel and 5.8 W power consumption, the 3500/50M 286566-02 Tachometer Module supports direct sensor connection. The 3500/50M 286566-02 Tachometer Module updates every 100 ms and occupies one full-height rack slot for industrial automation panels.

Applications

Turbine Overspeed Detection and Trip Activation
The 3500/50M 286566-02 Tachometer Module measures shaft speed from proximity probes or magnetic pickups within a +10.0 V to −24.0 V input range and 20 kΩ impedance. It compares real-time rpm with programmed alarm setpoints. With a 100 ms update rate, the 3500/50M 286566-02 Tachometer Module triggers alarms when turbine speed exceeds set thresholds, supporting immediate trip activation in steam or gas turbine systems.

Compressor Acceleration Monitoring During Startup
Using dual-channel inputs, the 3500/50M 286566-02 Tachometer Module calculates rotor acceleration. The module detects speed changes during compressor ramp-up from zero to full rpm, allowing operators to monitor acceleration peaks. Its 24 Vdc, 40 mA per channel transducer supply ensures direct sensor powering without extra modules.

Zero Speed Notification for Maintenance Procedures
The 3500/50M 286566-02 Tachometer Module provides zero speed verification by sending a 4 mA signal through its independent 4–20 mA output when rpm drops to zero. Operators use this signal to confirm the shaft has stopped before maintenance or lockout activities.

Specifications

Competitive Advantage

Low Power Consumption for Efficient Rack Use
Consuming only 5.8 W typical, the 3500/50M 286566-02 Tachometer Module minimizes power draw in multi-module 3500 racks, supporting efficient energy use while monitoring multiple machines simultaneously.

Independent 4–20 mA Output Per Channel with Load Support
Each channel of the 3500/50M 286566-02 Tachometer Module delivers a 4–20 mA signal proportional to rpm or rpm/min. Outputs support 0–600 Ω load with 0 to +12 Vdc compliance, and accuracy of ±0.25% at room temperature, enabling precise integration into PLC or DCS systems.

Direct Dual Sensor Connection Without External Power
The 3500/50M 286566-02 Tachometer Module powers two proximity or magnetic transducers directly using 24 Vdc at 40 mA per channel, eliminating the need for separate power modules and simplifying wiring in automation racks.

Fast 100 ms Update for Real-Time Alarm Activation
The 3500/50M 286566-02 Tachometer Module updates speed, acceleration, and direction calculations every 100 ms, ensuring rapid detection of overspeed, acceleration peaks, or reverse rotation, enabling immediate alarm and control responses.