Allen Bradley 1440-VST02-01RA XM120 Dynamic Measurement Module

Allen Bradley 1440-VST02-01RA Introduction

The Allen-Bradley 1440-VST02-01RA eccentricity module is part of the XM Module Series by Allen-Bradley. This 2-channel eccentricity monitor can be used to measure the degree of the bow in rotors. It can be used as a stand-alone application or it can be integrated with control system networks or Programmable Logic Controllers (PLCs). The lower the eccentricity value, the straighter the shaft, and vice versa. The rotor bow can either be a fixed mechanical bow, or a temporary bow as a result of uneven thermal heating or it can be caused by the rotor’s weight (gravity bow). The 1440-VST02-01RA eccentricity module is ideal for nearly all types of reciprocating or rotating machinery, where the rotor bow must be checked before or during startup.

The 1440-VST02-01RA eccentricity module can accept input from non-contact eddy current probe systems, where it offers peak-to-peak eccentricity, max-gap (maximum instantaneous DC voltage), min-gap (minimum instantaneous DC voltage), as well as gap (instantaneous DC voltage) measurements. Apart from the transducer inputs, the 1440-VST02-01RA module can only accept one tachometer input to offer speed measurement where it can be used to disable eccentricity alarms once a startup has been completed. The 1440-VST02-01RA eccentricity module comes with a single onboard relay, which can be expanded to 5 relays, thus making the module a complete monitoring system. This module can be configured by using two different methods, remotely through a DeviceNet network, or locally via a serial connection to a laptop or a PC. However, it is recommended that the users refer to the user manual before starting any configuration parameters for the 1440-VST02-01RA eccentricity module.

Technical Specifications for 1440-VST02-01RA

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