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XM-122 gSE Vibration Module

Click to enlarge - 122


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


Communication


DeviceNet:

  • Standard DeviceNet protocol for all functions
    NOTE: The XM-122 uses only the DeviceNet protocol, not power. Module power is provided independently.
  • Available Electronic Data Sheet (EDS) file provides support by most DeviceNet compliant systems
  • Baud rate automatically set by bus master to 125kb, 250kb or 500kb
  • Configurable I/O Poll Response helps optimize space utilization within users scanner input tables
    • Selectable Poll Response Assembly
    • Selectable Poll Response Size (bytes)


Side Connector:

All XM measurement and relay modules include side connectors that allow interconnecting adjacent modules thereby simplifying the external wiring requirements. The Interconnect provides primary power, DeviceNet communication and the circuits necessary to support expansion modules such as the XM-441 Expansion Relay module.


Serial:¬ 

  • RS-232 via mini-connector or terminal block
  • Baud rate auto baud to 19200 or 57600


¬ Local configuration via Serial Utility Program

Inputs


2 Channels of:

  • Accelerometer signals
  • Voltage signals from any dynamic measurement device, such as a velocity or pressure transducer


Transducer Power:

  • Constant current (4.5mA ±20% from +24V dc)¬ 
  • None (voltage input)


¬ Tachometer may be powered, constant voltage, or configured as voltage input.


Voltage Range:

Selectable in software as 0 to ±20V (min) 40Vmax. peak-to-peak


Sensitivity:

User configurable in software


Input Impeadance:

>100k

Tachometer


1 Tachometer Input:

  • ±25V (50V max. peak to peak)
  • 1 to 50,000 events per revolution


Input Impedance:

120k minimum


Speed/Frequency Range:

1 to 1,200,000 RPM

0.0167 to 20,000Hz


Speed Measurement Error:

1 to 12,000 RPM +/- 1 RPM

12,001 to 120,000 RPM +/- 6 RPM

120,001 to 1,200,000 RPM +/- 50 RPM

Outputs


4-20mA Outputs:

  • Each output is independently programmed to represent any measured parameter, from either channel
  • 2 isolated outputs
  • 300 ohm max load


Buffered Outputs:

  • 1 active buffer per vibration input channel
  • Resistive buffer for tachometer

Indicators


LEDs:

  • Module Status – red/green
  • Network Status – red/green
  • Channel 1 Status – off/yellow/red
  • Channel 2 Status – off/yellow/red
  • Tachometer Status – off/yellow/red
  • Relay – off/red

Single Conditioning


Sampling Modes:

  • Asynchronous
  • Synchronous


Frequency Range:

1 Hz to 20 kHz


Resolution:

  • A/D Conversion: 24 bits
  • Dynamic Range: <80dBfs (0.01% fs), -90dBfs (typical)
  • FFT Lines / Waveform block size
    • 100 / 256
    • 200 / 512
    • 400 / 1024
    • 800 / 2048


Amplitude Range:

Dependent on sensitivity


Integration:

Two levels provided, first in hardware, second in firmware


Averaging:

Any number of averages may be specified. If sampling mode is:

  • Asynchronous: Averaging will be done on the spectra.
  • Synchronous: Averaging will be performed on the time waveforms.


Low Pass Filters:

Independently configured per channel

  • Spectra FMAX: 10 Hz - 20 kHz
  • gSE Spectra FMAX: 10Hz – 5 kHz
  • Optional Overall measurement LP filter: 200 Hz - 20 kHz, Roll Off: -24 dB per octave


High Pass Filters:

Independently configured per channel

  • Integration OFF: 1, 5, 10, 40, 1000 Hz, Roll Off: -30 dB per octave for the 1 Hz HPF, otherwise -24 dB per octave
  • Integration ON: 5, 10, 40, 1000 Hz, Roll Off:
    • Single Integration: -30 dB per octave for the 5 Hz HPF, otherwise -24 dB per octave
    • Double Integration: -42 dB per octave for the 5 Hz HPF, otherwise -24 dB per octave
  • gSE High Pass Filter: 200, 500, 1000, 2000, 5000 Hz, Roll Off: -12dB/octave


Units:

  • g     		    
  • mm/s
  • um
  • psi
  • ips
  • mils
  • volt
  • Pa

    Complex Data

    • Spectra (synchronous or asynchronous)
    • gSE Spectra
    • Time Waveform (synchronous or asynchronous)
    • Simultaneous Time Waveforms (synchronous)

    Measured Parameters


    Overall:

    • gSE Overall
    • RMS
    • Peak (true or calculated)
    • Peak to Peak (true or calculated)


    4 Bands per Channel:

    Limits defined in frequency or order Domain. Bands may overlap, Calculated Value:

    • Overall in band
    • Max peak in band


    Gap (or transducer bias voltage)


    Speed


    Orders:

    • Magnitude: 1x, 2x, 3x
    • Phase: 1x, 2x


    Not 1x


    Sum Harmonics:

    Sum Harmonics is the sum of all harmonics from a user defined first order to the maximum order in the spectra.

    Data Buffers


    Trend Buffer:

    Stores a set of records containing measured parameters in response to a trigger event.

    • Trend Record: 1 to 16 parameters
    • Trend Interval: 1 to 3600 seconds
    • Trigger: The trend is saved when a specified relay actuates, or on command from an XM-440, host or controller.
    • Capacity: 170 to 2048 records depending on the number of parameters stored.


    Trip Spectra or Time Waveform:

    The current time waveforms or spectra are saved upon the same trigger event defined for the Trend Buffer (above).


    Speed Buffer:

    Stores a startup/coast-down trend of measurement parameters in response to changes in speed.

    • Su/Cd Record: 1 to 16 parameters
    • Su/Cd Interval: 1 to 3600 RPM
    • Trigger: Records are sampled while speed is between user specified minimum and maximum values.
    • Sampled while speed is increasing only during startup.
    • Capacity: 113 to 512 records depending on the number of parameters stored.
    • Su/Cd buffer may be latched to preserve the initial trip data in the event of subsequent trips.

    Alarms


    Number:

    16 alarms and danger pairs


    Alarmed Parameters:

    Any measured parameter


    Operators:

    • Greater than
    • Less than
    • Inside Range
    • Outside Range


    Hysteresis:

    User defined


    Speed Inhibit:

    A speed range may be specified for each alarm. When applied, if the speed is outside of the defined range, the alarm is disabled.

    Relays


    Number:

    • Single on-board relay, two sets of contacts–DPDT (2 Form C)
    • Four additional relays when linked to an XM-441 Expansion Relay module, or:
    • Four virtual relays whose status can be used by remote Control Systems


    Onboard Relay Rating:

    • Max. Voltage = 120 Vdc, 125 Vac
    • Max. Current = 3.5 A ¬ 
    • Min. Current = 0
    • Max. Power = 60 W, 62.5 VA
    • UL Rating: 120 Vac @ 0.5 Amps resistive; 110 Vdc @ 0.3 Amps resistive; 30 Vdc @ 1.0 Amps resistive


    ¬  Max current is up to 40°C, then derates to 2A at 65°C. For Expansion Relay Rating refer to XM441 Technical data sheet ENMON-TD441A-EN-P


    Failsafe:

    • Normally energized (failsafe), or
    • Normally de-energized (non-fail-safe)


    Latching:

    • Latching, or
    • Non-latching


    Time Delay:

    0 to 25.5 seconds in 100msec increments


    Voting Logic:

    Single or paired "And" or "Or" logic applied to any alarms


    Reset:

    • Local reset switch on top of module
    • Remote reset switch wired to terminal base
    • Digital reset command via serial or DeviceNet interface


    Activation On:

    • Alarm Status
      • Normal
      • Alert
      • Danger
      • Disarm
    • Transducer Fault
    • Module Fault
    • Tachometer Fault

    Non-Volatile Configuration

    A copy of the module configuration is retained in nonvolatile memory from where it is read upon power up.¬ 

    ¬ The configuration stored in Non-Volatile memory can only be deleted by module-reset command sent via the serial interface, using the Serial Configuration Utility, or via DeviceNet from any compliant software application.

    Power


    Module:

    21.6 - 26.4Vdc


    Consumption:

    Max: 300mA; Typical: 175mA


    Heat Production:

    Max: 7 Watts (24 BTU/hr); Typical: 4 Watts (14 BTU/hr)


    Transducer:

    Isolated 24V DC, user configurable with wiring

    Redundant Power: All XM Measurement and Relay modules support redundant power. Each module includes redundant power inputs on its terminal base.

    Approvals

    Click to enlarge - approval logos



    CE, C-Tick, ODVA
    CSA Class I, Div 2, Groups A, B, C,
    D
    UL
    EEX

    Environmental

    Environmental
    Operating Temperature -20 to +65ºC (-4 to 149ºF)
    Storage Temperature -40 to +85ºC (-40 to 185ºF)
    Relative Humidity 95% non-condensing
      


    Conformal Coating

    All printed circuit boards are conformal coated:

    • Per material specifications MIL-I-46058C / IPC-CC-830
    • In accordance with IPC-A-610C

    Physical

    In accordance with IPC-A-610C.

    Dimensions:
    Height 3.8in(97mm)
    Width 3.7in(94mm)
    Depth 3.7in(94mm)
      

    Ordering Instructions

    Catalog Number Description
    1440-VSE02-01RA XM-122 gSE Vibration Module¬ 
    1440-TB-A Terminal Base A for XM-12x
    1440-SCDB9FXM2 XM Serial Communications Cable
     
    ¬ Requires Terminal Base A