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| Protection Systems |
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| General Resources |
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| XM-122 gSE Vibration Module |  |
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Introduction |  |
Communication | |
Inputs | |
Tachometer | |
Outputs | |
Indicators |  |
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Single Conditioning | |
Complex Data | |
Measured Parameters | |
Data Buffers | |
Alarms | |
Relays | |
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Non-Volatile Configuration | |
Power | |
Approvals | |
Environmental | |
Physical | |
Ordering Instructions | |
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122 gSE Vibration Module The XM® series from Rockwell Automation is the world's first machine monitoring and protection system designed as a distributed network of modules deployed on an open standard industrial bus. The XM-122 gSE Vibration Module is an intelligent 2-channel special-purpose monitor that is uniquely suited for monitoring of vibration in rotating equipment fitted with rolling-element bearings. The XM-122 includes special circuitry and firmware that enable it to measure both "standard" vibration, similarly to the XM-120, and g’s Spike Energy™ (gSE). gSE is a Rockwell Automation developed signal-processing technique that provides an accurate measure of the energy generated by transient or mechanical impacts. For over 20 years gSE measurements have been used to provide the earliest possible 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. Typical applications include monitoring critical gearboxes, machine tool spindle bearings, and both magnetic drive and canned motor seal-less pumps. Like the XM-120 the XM-122 provides onboard processing of critical vibration parameters, advanced alarm and relay logic, easy installation and superior serviceability. However, unlike the XM-120, the XM-122 is not a real-time protection monitor. Because the XM-122 continuously alternates between standard and gSE measurements, updating each every 4 to 80 seconds (depending on the selected blocksize and bandwidth), the module is not suitable for applications requiring true real-time monitoring and protection. Inputs to each channel include standard integrated Electronics Piezo Electric (IEPE) accelerometer, or any voltage output measurement device such as a velocity or pressure transducer. In addition to vibration inputs, the modules accept one tachometer input to provide speed measurement and order analysis functions. With two 4-20mA outputs and a single onboard relay, expandable to five, and an integral tachometer, the XM-122 gSE Vibration module offers a complete monitoring system in a small, simple, easily installed, easily maintained package. The XM-122 module can operate stand alone, with no interface to higher-level control systems or interactive user interfaces. It can also be deployed on a standard or dedicated DeviceNet network where it can provide data and status information to other XM modules, PLC's, DCS and Condition Monitoring Systems. Configuration can be performed either locally or remotely via the DeviceNet network. Local configuration is provided by the included simple and intuitive Serial Configuration Utility executing on a PC connected to the modules serial communications port. Remote configuration can be performed from any networked PC executing either any standard DeviceNet configuration software, or the XM specific XM EOL Configuration software from Rockwell Software. Specifications
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