Allen Bradley 1440-VSE02-01RA XM-122

The XM-122 1440-VSE02-01RA 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 recirculation.

The XM-122 1440-VSE02-01RA 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 dependent on the configuration. The module continuously monitors transducer bias and speed as well.

The XM-122 1440-VSE02-01RA 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 events, 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.