Allen-Bradley 1440-VSE02-01RA XM-122 gSE Vibration Module

Allen-Bradley 1440-VSE02-01RA XM-122 gSE Vibration Module

Description

The XM-122 gSE Vibration module is an intelligent 2-channel special-purpose vibration monitor. It is part of the Allen-Bradley™ XM® Series, a family of DIN rail mounted condition monitoring and protection modules that operate both in stand-alone applications or integrate with Programmable Logic Controllers (PLCs) and control system networks.

The XM-122 module includes special circuitry and firmware that enables it to measure both conventional vibration (similar to the XM-120) and g’s Spike Energy™ (gSE). This makes the module ideal for monitoring machines with rolling element bearings.

gSE is an Entek developed signal processing technique that provides an accurate measure of the energy generated by transient or mechanical impacts. The gSE measurement provides early detection of surface flaws in rolling-element bearings, metal-to-metal contacts, insufficient bearing lubrication, and process-related problems, such as dry running, cavitation, flow change, and internal re-circulation.

The XM-122 alternates collection of conventional vibration measurements and gSE overall and gSE spectra measurements. The time the module spends updating each set of measurements during a monitoring-time is dependant on the configuration. The module continuously monitors transducer bias and speed as well.

The XM-122 can power and accept input from standard eddy current probe systems and Integrated Electronics Piezo Electric (IEPE) accelerometers. It can also accept signals from most standard voltage output measurement devices such as a velocity or pressure transducer. In addition to vibration inputs, the XM-122 accepts one tachometer input to provide speed measurement and order analysis functions.

The XM-122 also includes a single on-board relay, expandable to five, an integral tachometer, two 4-20 mA outputs, and a buffer output for each input. The module can collect data under steady-state and startup/coast-down conditions, capture trend and spectra or waveform data on event, and monitor up to 16 alarms making the module a complete monitoring system.

The module can operate stand-alone, or it can be deployed on a standard or dedicated DeviceNet network where it can provide real-time data and status information to other XM modules, PLCs, DCS and Condition Monitoring Systems.

The XM-122 can be configured remotely via the DeviceNet network, or locally using a serial connection to a PC or laptop. Refer to Chapter 3 for a list of the configuration parameters.

Technical Specifications