Bently Nevada 3500/50M Tachometer Module

General Introduction

Technical Specifications1

• Input Signal Range: It can accept input signals in the range of +10.0 V to -24.0 V.
• Input Impedance: The standard input impedance is 20 kΩ, 40 kΩ for TMR, and 7.15 kΩ for internal barrier.
• Power Consumption: The typical power consumption is 5.8 watts.
• Output Impedance: The output impedance is 550 Ω.
• RPM/Min Accuracy: It has an accuracy of ±20 rpm/min.

Functional Features

• Versatile Measurement and Alarm: It can perform speed monitoring, and compare the measured values with user-programmable alarm setpoints to trigger alarms. It also offers functions like speed band alarming, zero speed notification, rotor acceleration alarming, and reverse rotation notification1.
• Peak Hold Function: The module is equipped with a peak hold feature that stores the highest speed, the highest reverse speed, and the number of reverse rotations4. Users are allowed to reset these peak values.
• Keyphasor Signal Supply: It can supply conditioned keyphasor signals to the backplane of the 3500 rack, eliminating the need for a separate keyphasor module in the rack4.

Applications