PRÜFTECHNIK VIBXPERT II Operating Instructions Manual
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PRÜFTECHNIK VIBXPERT II Operating Instructions Manual

Dual channel fft data collector and signal analyzer
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VIBXPERT
Dual channel
FFT data collector
and signal analyzer
Operating
Instructions
Series: VIB 5.310
Firmware version: 3.2x
Edition: May 2012
Order no.: LIT 53.201.EN
Translation of the original manual (german)
II
®
Dear customer,
We are grateful for your trust and hope that
you are happy with our product. If you have
any suggestions for improving this product
or this instruction manual, please let us know.
PRÜFTECHNIK Condition Monitoring
Fax: +49 89 99616-300
eMail: info@pruftechnik.com

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  • Page 1 VIBXPERT ® Dual channel FFT data collector and signal analyzer Operating Instructions Dear customer, Series: VIB 5.310 Firmware version: 3.2x We are grateful for your trust and hope that you are happy with our product. If you have any suggestions for improving this product or this instruction manual, please let us know.
  • Page 2 Foreword Foreword Congratulations! And thank you for selecting the VIBXPERT II FFT * Also referred to as 'VIBXPERT' and data collector and signal analyzer*. This newly developed measure- 'device' in these operating instructions. ment device is not just the ideal companion for your routine measure- ment round, but also a reliable on-site aid for recording and analyzing complex machine signals.
  • Page 3 Foreword • Advanced measurements - 1+1 dual measurement (simultaneous 2-channel measurement) - Multitask (measure multiple measurement tasks in a sequence) - On-site balancing in one or two planes - TrendingSpectrum (a measurement provides a time signal, a spectrum and several characteristic overall values, in route and template mode).
  • Page 4 Foreword About this manual This manual describes the basic functions and operation of the mea- surement device in the 'Multimode', Templates' and 'Route' operating modes. The operation of the optional ‘Balancing’ module is described in the ‘VIBXPERT - Balancing’ operating manual (LIT 53.202.EN). If you don't have this manual handy, open the online help in the de- vice with the HELP key.

  • Page 5: Table Of Contents

    Contents Contents Chapter 1: Introduction ............1-8 VIBXPERT II delivery packages .............1-9 Safety and operating notes............1-10 Chapter 2: Getting started ..........2-1 Overview ..................2-1 Keyboard ....................2-2 Status display per LED ..................2-2 Notes on operation ..............2-3 Interfaces ...................2-5 Power supply................2-7 Charging the battery in the device ...............2-7 Charging in the external charging station ............2-8...
  • Page 6 Contents Notes about routes ..................3-7 Typical workflow of a route................3-7 Start Route ....................3-7 Icons ......................3-9 MENU functions in the tree / list view ............3-10 MENU functions in the measurement task selection screen ......3-12 Measuring with a machine template .........3-13 Preliminary remarks ...................3-14 Start measurement ..................3-15 Options before, during and after a measurement .....3-17 Aborting a measurement ................3-17...
  • Page 7 Storage .....................6-14 Cleaning ....................6-14 Maintenance & Calibration ................6-14 Guarantee ....................6-15 Spare parts, accessories ................6-15 Disposal .....................6-15 Technical data ...................6-16 Troubleshooting ...............6-18 Reloading firmware ...................6-18 VIBXPERT Firmware modules ............6-20 Upgrade matrix for VIBXPERT II packages .........6-21 Index ..................6-22 Declaration of conformity ............6-24...

  • Page 8: Chapter 1: Introduction

    Delivery packages Chapter 1: Introduction The VIBXPERT II delivery packages contain the parts listed below. If you discover that a part is missing or is damaged, please contact your PRÜFTECHNIK agent immediately. The Data collector packages include the basic equipment and are only available as a 1-channel version.

  • Page 9: Vibxpert Ii Delivery Packages

    VIBXPERT delivery packages VIBXPERT II delivery packages Data collector package, 1-channel device VIB 5.310-1E VIB 6.142R VIB 3.420 VIB 5.310 VIB 5.356 (VIB 5.325) VIB 5.328 LIT 53.201.EN LIT 01.800 VIB 5.320 INT LIT 53.202.EN LIT 53.102.EN VIB 5.436 VIB 5.330SUSB VIB 8.970...

  • Page 10: Safety And Operating Notes

    1-10 Safety and operating notes Safety and operating notes Read this section carefully, paying especially close attention to the safety notes, before working with the device. Symbols used Danger to life and limb! WARNING! Operating errors that can lead to data loss or equipment damage.
  • Page 11 1-11 Safety and operating notes General safety The following notes must be carefully read and completely under- stood before the device is put into service.  Risk of injury when measuring on a running machine! Observe the safety regulations. Install the measurement equip- ment properly.
  • Page 12 1-12 Safety and operating notes Nameplates The diagram below shows the locations and the contents of the device nameplate and the battery nameplate (standard version). VIB 5.310 00100 Nameplate for the VIBXPERT device with serial number ('S.No.') Nameplate for the rechargeable battery with with serial number and 00100 safety notes...

  • Page 13: Chapter 2: Getting Started

    Getting started Chapter 2: Getting started Overview The illustrations show the interfaces and operating elements: Full color display - large, backlit, high contrast. Ambient light sensor con- trols keyboard illumination. Four LEDs indicate: - Alarm condition - Measurement error - Battery charge status. Keyboard - ergonomic, backlit.

  • Page 14: Keyboard

    Getting started Keyboard The keys can be comfortably operated with the thumb of the right hand. In a dark environment the keyboard illumination automatically turns on. Plus (+) / Minus (-) key Additional (ENTER) key on - Zoom for X axis the rear panel (p.

  • Page 15: Notes On Operation

    Getting started - Operation Notes on operation To keep operation as simple and intuitive as possible, the graphical user interface guides the user step-by-step and is based on the 'Micro- soft Windows' operating concept. Switch on / off Switching on VIBXPERT To switch on the device, hold the On/Off key down for two seconds.
  • Page 16 Getting started - Operation Menu The functions of the current program section are found in the 'Menu' which is displayed with the MENU key and hidden again with the ESC key. An arrow next to a menu entry indicates a further submenu. To open it, press the right navigation key. Help Tips and operating instructions are available for every screen in the program. Call up these help pages at any time by pressing the HELP key and close them by pressing the HELP key again.

  • Page 17: Interfaces

    Getting started - Interfaces Interfaces The connections for the sensor and data cables are located on the front of the measurement device. The cable connectors and sockets are colored for easy identification. To unplug the connector, push the connector sleeve backwards to re- lease the lock.
  • Page 18 Getting started - Interfaces Digital The yellow channel is used as the: - Input for digital signals from a trigger or a RPM sensor - Serial interface for data transmission (RS 232) - Output for the analog signal (connection for headphone/oscillo- scope) - Output for stroboscope control (TTL signal) The permissible range for trigger signals is: -26V ... 0V (negative) or -5V ... +26V (positive).

  • Page 19: Power Supply

    Getting started - Power supply Power supply VIBXPERT is supplied with energy by a Lithium-Ion rechargeable bat- tery. With the power on the the battery icon on the display indicates the residual charge of the battery: Battery is being charged Battery icon Residual charge 100% Residual charge 25% Battery almost empty If the battery is almost empty, a message appears on the display and the blue LED flashes. The battery can be charged either in the device or in the external charging station (option, VIB 5.324) using the VIBX-...

  • Page 20: Charging In The External Charging Station

    Getting started - Power supply During extended periods of non-use and during storage, connect VIBXPERT regularly to the mains supply. This prevents the battery from becoming completely discharged, and the date and time settings are retained. • Do not use damaged batteries! • Do not send back damaged batteries! • Do not use force to open the battery or throw it in the fire! Attention! • Do not short-circuit connection contacts!

  • Page 21: Carrying Pouch - Vib 5.356

    Getting started - Carrying pouch Carrying pouch - VIB 5.356 The stable and functional carrying pouch allows safe and convenient transport of the measurement device. A belt and a hand strap can be attached to the pouch: Belt Fasten the belt to the two diagonally opposite eyelets. Adjust the belt length so that the measurement device hangs comfortably from the shoulder to allow convenient operation.

  • Page 22: Memory Card

    2-10 Getting started - Memory card Memory card A CompactFlash (CF) card with 2 GB memory capacity is installed in the VIBXPERT as standard. If required, the standard card can be replaced by a card with greater memory capacity. Backup all data before replacing the card using the 'VIBXPERT util- ity' program (see page 6-8)! When closing the cover, it must be additionally sealed with a sili- Attention!
  • Page 23 2-11 Getting started - Memory card • Coat the groove along the edge of the card compartment cover with a small amount of silicone adhesive (NOVASIL S-11) and re- place the cover. Remove any excess adhesive with a cloth.  Note Notch for silicone adhesive (framed) The cover can also be replaced without silicone adhesive. The de- vice complies with protection class IP 55 then.

  • Page 24: Basic Settings - Device Setup

    2-12 Getting started - Basic settings Basic settings - Device Setup Before carrying out measurements with VIBXPERT, the basic settings in the 'Device Setup' should be checked and changed if necessary. • Switch on VIBXPERT. • Click on 'Device Setup' in the start screen. The 'Device Setup' screen appears. Date & Time The time and date are saved together with the measurement result. To change the settings: • Click on 'Date & Time'.

  • Page 25: Display Settings, Switchoff And Additional Options

    2-13 Getting started - Basic settings Display settings, switchoff and additional options • Click on 'Display' in the 'Device Setup' screen. : Press the navigation key right or left until the desired rightness brightness is achieved. To accept the setting, press 'Enter'. : The display/ the device auto- witch Backlight off uto power off matically switches off if no action occurs within the turn-off time...

  • Page 26: Route

    2-14 Getting started - Basic settings Route • Click on 'Route' in the 'Device Setup'. The settings in the Route Setup apply to measurements in the 'Route' / 'Template' mode. The Route Setup can be called up and adjusted at any time in the route/template. For clarity, the numerous settings in the Route Setup are grouped into three submenus (see below): Route display settings • Click on 'Display' to set up the following options: Route display type The route/machine template can be displayed in the hierarchical tree view or as a list.
  • Page 27 2-15 Getting started - Basic settings : Display of machine images. The position of the measure- naBled ment locations and the measurement direction is indicated by symbols. : The route is processed in the set display mode (tree / list) isaBled Display all hierarchies This option applies to the tree view only.
  • Page 28 2-16 Getting started - Basic settings Measurement settings • Click on 'Measurement' to set up the following options: Autostart measurement This shortens the duration of the entire measurement. : Clicking the measurement location starts the first mea- naBled surement automatically. If multiple measurement tasks are defined for the same accelerometer at a single measurement location, these measurement tasks are automatically run consecutively, provided that the 'Auto Save' option is enabled (see next section).
  • Page 29 2-17 Getting started - Basic settings Advanced VIBCODE handling When measurement tasks performed at a VIBCODE measurement location are not only taken by the VIBCODE sensor but by another vibration sensor, VIBXPERT recognizes these and assigns them to an- other measurement channel. : Measurement tasks with the VIBCODE sensor are per- naBled formed on the VIBCODE sensor channel.
  • Page 30 2-18 Getting started - Basic settings Standard vibration sensor Here you define the sensor to be used for all vibration measurements on a route. The settings in OMNITREND are ignored. The 'Triax sen- sor' option is disabled.  Standard sensor is active when, in the task selection screen - Channel A / Channel B is marked red, Note - Sensor icon at the top edge of the screen lights up orange. Use the standard sensor for measuring or deactivate this option. Otherwise, incorrect measurements may be the result.

  • Page 31: Transducers

    2-19 Getting started - Basic settings Transducers The transducer menu (see below) contains all of the functions and pre settings for the transducer. Click on 'Transducers' to open the menu. Available transducers in VIBXPERT The measurement-relevant parameters for many transducers are stored in VIBXPERT.
  • Page 32 2-20 Getting started - Basic settings Transducer parameters To check the parameters for transducers that have already been set up, proceed as follows: • Select the transducer. • Press the MENU key. • Click on 'Show'* or 'Edit' to open the parameter screen (see below). *'Show' appears for factory-defined transducers whose parameters cannot be changed. quantity Measurement quantity of the sensor: vibration acceleration, veloc- ity, displacement, current, RPM, jump, user-defined quantity ignal type...
  • Page 33 2-21 Getting started - Basic settings esonance frequency The resonant frequency of the sensor is an important influencing quantity in the shock pulse measurement (bearing condition). (rpm) ettling time Settling time of the RPM sensor Filtering the transducer list The transducer list can be can filtered according to specific criteria: • Press the MENU key.
  • Page 34 2-22 Getting started - Basic settings Tranducer detection and Hardware settling In this menu, the transducer detection feature and the settling of the amplifier stages in VIBXPERT can be switched on and off. Additional information can be found in the 'Route Setup' section (p. 2-17).  The settling of the amplifier can only be activated when the trans- ducer detection is switched off.

  • Page 35: Language

    2-23 Getting started - Basic settings  Default sensor is active, when • Channel A / Channel B is marked red in the task selection Note screen • the sensor icon at the top edge of the task selection screen is orange • the sensor setup cannot be opened in the measurement task manager.

  • Page 36: Registration

    2-24 Getting started - Basic settings Registration The functions and operating modes in VIBXPERT are distributed in individual modules* that can be enabled by password as required. VIBXPERT is supplied in the 'Basic' version with which overall values as well as (limited) spectra can be measured. For example, to enable the standard 1-channel version, the 'VIBXPERT firmware for 1 chan- nel' module must be registered in VIBXPERT.

  • Page 37: Key Controls

    2-25 Getting started - Basic settings Key controls Additional functions are activated for some keys in VIBXPERT as stan- dard that are intended to ease working on-site on the machine or to increase data security. • Click on 'Key controls'. The following options can be activated or deactivated in the next screen: Additional key on the rear panel VIBXPERT has an additional input key on the rear panel which can be...

  • Page 38: Printer

    2-26 Getting started - Basic settings Printer With VIBXPERT, you can print out measurement results, reports and PDF file directly on a USB-printer. • Click on the 'Printer settings' icon to open the Printer menu. Setting up a printer To set up a new printer, proceed as follows: • Click on the 'Printer settings' icon to open the 'Printer settings' menu (see below).
  • Page 39 2-27 Getting started - Basic settings Deleting a print job • Click on 'Print queue' in the 'Printer settings' menu. • Select the print job in the list. • Press the MENU key and click on 'Delete job'. If a print job is being processed, a print icon appears at the top edge of the screen. Print job is being processed Connecting the printer Only printers with a USB interface can be connected to VIBXPERT. Use the USB cable available as an accessory for I/O devices to connect the printer (VIB 5.3330 MUSB).

  • Page 40: Analog Out/Headphones

    2-28 Getting started - Basic settings Analog out/headphones At the analog output (yellow connector), the vibration signal can be picked up with a suitable analysis device (oscilloscope) or listened to via headphones (e.g. VIB 6.670). The output is always the pure, non- integrated signal without the DC component. To use the yellow connector as the analog output, it must be enabled and parameterized in the Device Setup: • Click on 'Analog Out/Headphone' in the Device Setup.

  • Page 41: Service Menu

    2-29 Getting started - Basic settings Service menu • Click on 'Service' to open the Service main menu (see below). A series of functions are available for service, maintenance and train- ing purposes. For clarity, the settings are grouped into submenus: Device Info This menu contains device information for service and repair as well as the date of the next offset compensation and calibration (for more details, see also p. 6-14).
  • Page 42 2-30 Getting started - Basic settings • Click on the respective tree entry and confirm the resulting prompt with 'OK'. • For reasons of security, the word 'OK' must be entered a second time in the text editor before the action can be carried out. Demo For training or demonstration purposes, the VIBXPERT screen display can be shown on a PC monitor with the aid of the VIBXPERT demo program.

  • Page 43: Memory Card (Cf)

    2-31 Getting started - Basic settings To backup the log file on the memory card in the VIBXPERT, click on the 'Backup Log' icon and confirm the prompt with 'Yes'. The log file can be transferred to the PC using the 'VIBXPERT update tool'. Memory card (CF) In this menu, you can format, check and repair the memory card. : You should only format a card if it is new and has not yet ormatting been used in VIBXPERT.

  • Page 44: Data Transfer

    2-32 Getting started - Data transfer Data transfer The following data is transferred between VIBXPERT and the PC ei- ther via a direct connection or a network connection: - Measurement tasks to VIBXPERT (route) - Measurement results to the PC (route, multimode, templates) - Machine templates to VIBXPERT - Software (update) - Printer drivers to VIBXPERT...

  • Page 45: Network Connection

    2-33 Getting started - Data transfer Network connection Data transfer via an Ethernet network requires the following compo- nents and information: - Network connection - Ethernet cable for VIBXPERT (VIB 5.331). - PC with network interface card connected to the network/hub - IP address and subnet mask of the PC in the network (lan): Connect the Ethernet cable VIB 5.331 to etwork connection the communication port (green) and network socket.

  • Page 46: Setting Up The Network Communication

    2-34 Getting started - Data transfer Setting up the network communication • Connect VIBXPERT to the network (see previous page). • Switch on VIBXPERT. • Click on 'Device Setup' in the start screen, and then on 'Ethernet': • Enter a valid IP address for VIBXPERT: Take the first three numbers of your PC's IP address and change the last number only (see also the following instructions). Make sure that the IP address for VIBXPERT is not already allocated in the network.

  • Page 47: Ip Address Of The Local Pc In The Network

    2-35 Getting started - Data transfer IP address of the local PC in the network If the IP address and the subnet mask of the PC are not known, ask your network administrator or find it yourself on the PC: Open the DOS box on your PC: • Click on “Start” and then on “Execute”.

  • Page 48: Entering A Fix Ip Address For The Local Pc

    2-36 Getting started - Data transfer Entering a fix IP address for the local PC You must assign a fixed IP address to the computer if you connect the computer directly to the measurement device with a patch cable: • From the START menu, select SETTINGS, choose NETWORK and DIAL-UP CONNECTIONS.

  • Page 49: Update

    2-37 Getting started - Update Update The current device software for VIBXPERT can be downloaded from the PRÜFTECHNIK homepage* in the Internet. *http://www.pruftechnik.com The update file is compressed in a ZIP archive that first has to be un- packed after it is downloaded to your PC. It is recommended to load the software update onto the device via Ethernet or USB because the serial connection is slower.
  • Page 50 2-38 Getting started - Update • In the next step ('3') select the update file on the PC. This file has already been downloaded as an archive file (*.zip) from the PRÜFTECHNIK homepage and unpacked to a temporary folder. The file name includes the version number (e.g. 'VXP2_300_ build638.ptz') and the extension 'ptz'. • Click on <Next>: • In the next step (‘4’) click on <Download> to start the data trans- fer to VIBXPERT. • After the data transfer has finished, click on <Close> to close the program. • The device switches itself on and off repeatedly until the update is completed. This process generally takes a few minutes. Wait for the VIBXPERT start screen to appear.

  • Page 51: Chapter 3: Measurement

    Measurement Chapter 3: Measurement VIBXPERT can carry out measurements in the following operating modes: Multimode: VIBXPERT can be used as a multimeter to measure characteristic overall values or signals for the diagnosis of machine conditions. The results can be saved and read in for evaluation and archiving by the OMNITREND PC software.

  • Page 52: What Is A Measurement Task

    Measurement What is a measurement task? *Measurement quantity: Vibration acceleration, To carry out a measurement, VIBXPERT requires information on the Vibration velocity type of measurement quantity*, the sensor being used and, if neces- Vibration displacement as overall value, sary, data for the evaluation of the result. Information as to whether time signal or spectrum respectively the RPM must be recorded with each measurement is also required.

  • Page 53: Multimode: Measurement, Analysis, Diagnosis

    Measurement - Multimode Multimode: Measurement, Analysis, Diagnosis To activate the 'Multimode' mode, click on the corresponding symbol in the start screen. The measurement tasks appear in the selection screen (see below). The measurement task for the selected icon is displayed below the icon field. The measurement tasks are grouped into three tabs: Overall (charac- teristic) Values, Signals, Advanced (measurements). Certain measure- ment tasks only appear if the corresponding module is registered.

  • Page 54: Continuous Measurement (Live Mode)

    Measurement - Multimode  Before every measurement, VIBXPERT checks that the sensor and cables are correctly connected if sensor detection is activated in Note the device setup (p. 2-22). In measurements with trigger (phase, orbit,...) the trigger signal is monitored. If the trigger signal fails during measurement, the green LED flashes after the measurement.

  • Page 55: Measurement Of A Route

    Measurement - Route Measurement of a route The 'Route' mode processes a specified number of measurement tasks which are carried out regularly according to a specific schedule with VIBXPERT. The measurement tasks for a route are compiled on the PC using the OMNITREND software.
  • Page 56 Measurement - Route As well as the standard measurement tasks*, the following route- *For more information, see also Chapter 5 ‘Measurement tasks’ specific measurement tasks can be included: Adaptive measurement task An adaptive measurement task automatically adapts the sequence of the route to the condition of the machines. If these run within the permissible range, the data collector only records overall values.

  • Page 57: Notes About Routes

    Measurement - Route Notes about routes A route can contain the following information: - Alarm and warning thresholds - Reference results that define the good machine condition. - Historic measurement results - Frequency marks - Master data of the route (name, user, version, ...) To display the master data, highlight the route in the route list (see below), press the MENU button and click on ‘Info’.
  • Page 58 Measurement - Route  Notes about the tree view: - If the 'Graphic Route' option is activated (p. 2-14), you can select the measurement location using the machine graphic (see left). Note - If the branch cannot be opened up to the measurement location level, press the MENU key and select 'Expand' -> 'Meas. points' (see below).

  • Page 59: Icons

    Measurement - Route Icons Measurement task Measurement task completed / skipped Task with status icons Adaptive task / Diagnostic task Reference RPM Result exceeds alarm, warning, prewarning threshold Status in Tree view / List view (empty) Partly/ not processed Completely processed / partly processed and skipped / Skipped contains Multimode result contains Event / Comment...

  • Page 60: Menu Functions In The Tree / List View

    3-10 Measurement - Route MENU functions in the tree / list view • Press the MENU key in the tree / list view (see below): nskip If a machine is not in operation during a route, you can skip all measurement tasks planned at this machine. The measurement tasks that are associated with the highlighted route element and were not measured are left out.
  • Page 61 3-11 Measurement - Route The following information is displayed for the highlighted element - Path in the OMNITREND database - Hierarchy type (e.g. train) - ID (identification number in the database) - Sequence number = order of the elements in the route list view - Task statistics (measured, skipped, not measured) - VIBCODE code number and code ring pattern (‘Show VIBCODE’). Toggle route display mode: List view / Tree view. * The 'Menu' function is only available / (h xpand ierarchy...

  • Page 62: Menu Functions In The Measurement Task Selection Screen

    3-12 Measurement - Route MENU functions in the measurement task selection screen • Press the MENU key in the task selection screen (see below): nskip A measurement task can be skipped if it cannot be measured. vent omment Enter the event and, if necessary, a supplementary comment to explain the result. It is also possible to use this entry for skipped measurements (see P . 3-26).

  • Page 63: Measuring With A Machine Template

    3-13 Measurement - Machine template Measuring with a machine template A 'Machine template' is used if it is necessary to carry out measure- ments on machines of the same type. The measurement locations are always at the same position and the measurement tasks are identical for each machine.

  • Page 64: Preliminary Remarks

    3-14 Measurement - Machine template Preliminary remarks In principle, a machine template is set up like a route and resembles a route in operation and workflow (see previous section). The differ- ences to a route are described in the following points: Machine description This must be identified with a name before the first measurement.

  • Page 65: Start Measurement

    3-15 Measurement - Machine template Start measurement • Click on 'Machine template' in the start screen. A list of the available machine templates appears (see below). Machines where measurements have already been carried out ap- pear subordinate to the associated template. The number of the measured measurement location and the total number of measure- ment locations is indicated in the right column ('Finished') for each machine.
  • Page 66 3-16 Measurement - Machine template The template then appears, which – like a route – is displayed as a tree structure or in the form of a list* (see section ‘Route’). The fol- * not in the case of templates for pro- lowing steps are identical to those in the ‘Route’...

  • Page 67: Options Before, During And After A Measurement

    3-17 Options Options before, during and after a measurement In addition to the information given in the previous sections, the op- tions for the measurement are described here. Aborting a measurement • Press the ESC key during the measurement. Repeating a measurement • In the results screen, press 'Enter', or ... • Press the MENU key in the results screen and click on 'Remeasure'. Saving a result Route / Machine template: • After the measurement confirm the ‘Save?’ prompt. If the ‘...

  • Page 68: Changing The Sensor

    3-18 Options Changing the measurement channel Route/machine template: • In the tree/list view, press the MENU key and click on ‘Runtime Setup: Route’ (see below). • Select the measurement channel (A, B, Auto = the channel set in OMNITREND). ‘ A uto’ is required when the route uses the ‘Near location’ or ‘Triax sensor’ function. Changing the sensor Multimode: • Highlight the measurement type in the selection screen.

  • Page 69: Changing The Measurement Task (M)

    3-19 Options Use this option when you do not have an RPM sensor on the route and need to perform measurements that require the RPM (e.g. roller bear- ing condition, order-based spectra). If the measurement task already has information on the RPM, this option is ignored. M = in Multimode only Changing the measurement task (M) • Highlight the measurement type in the selection screen.

  • Page 70: Creating A New Setup (M)

    3-20 Options Creating a new setup (M) M = in Multimode only You can only create a new setup for the measurement, evaluation or rpm for user-defined measurement tasks. You can also create a new sensor setup for measurement tasks preset at the factory. How to create a new setup: • Open the 'Task Manager' (see below and previous page).
  • Page 71 3-21 Options A1: Meas. setup parameters in the 'Overall values' & 'Advanced' tab : Fixed; selection is carried out via the measure- easurement quantity ment icon. Exception: The measurement quantity can be changed for the ‘Orbit’, ‘Phase’ and ‘Coastdown’ measurement tasks. ): The sample frequency for the ample frequency imewave ecorder time signal defines the maximum upper frequency and influences...
  • Page 72 3-22 Options rder with hase rBit oastdown measurement Order filter for the harmonic vibration components of the signal. For example, only the signal components of the 1st harmonic are *'Fixed range', e.g. for a runup / coast- filtered out and displayed by the first order filter. A half order is down curve or impact test.
  • Page 73 3-23 Options rpm (r ): Rotational speed at which the tart unup oastdown measurement should start or stop. ): The current, averaged measure- deviation unup oastdown ment value is not saved until the rpm has changed by the value set here (see p. 5-11).
  • Page 74 3-24 Options ): The sample frequency for the time ample frequency imewaveform signal defines the upper frequency. ): The length of the time window de- easurement time imewaveform pends on the sample frequency. The maximum measurement time is 640 s. ): Number of lines displayed. umBer of lines pectrum epstrum...
  • Page 75 3-25 Options B. Setup parameters for sensors The sensor parameters to be set up are described on P . 2-20 If you have defined a default sensor for vibration measurements (see p. 2-22), the ‘Sensor Setup’ menu is deactivated. C. Evaluation parameters for overall value / time waveform meas. For characteristic overall value measurement tasks, which are mea- sured according to ISO 10816-3, the corresponding thresholds are stored in fixed evaluation setups.

  • Page 76: Entering An Event/Comment

    3-26 Options Entering an Event/Comment You can record information relating to data collection using pre- defined events* and freely editable comments. Up to 10 events can be * Import user-defined events via OMNI- assigned to every measurement result and every element in a route. TREND.

  • Page 77: Signal Sensitivity On Analog Output/Headphones

    3-27 Options To delete an event/ comment in the route • Press the F key in the event editor to open the bottom event or comment window. • Select the event or comment o be deleted. • Press the MENU key and click on 'Delete'. Signal sensitivity on analog output/headphones The analog output is activated and configured in the device setup (see p. 2-28). To adjust the sensitivity of the analog output, proceed as follows: • Press the MENU key in the measurement screen.

  • Page 78: Trend

    3-28 Trend Trend The standard procedure for monitoring machine conditions is the regular recording of characteristic overall values over a longer period of time. The trend of the machine condition can be traced back from the resulting trend curve and its probable development in the future can be predicted.
  • Page 79 3-29 Trend Trend in the ‘Multimode’ To start a trend, first open the file in which the measurements that were already carried out are stored: • Click on 'File manager' in the start screen. • Click on the file that was saved as a trend measurement. • To start the measurement, either press 'Enter' or press the MENU key and click on 'Remeasure'. • After the measurement press the MENU button and click on 'Save'. • In the following prompt, click on 'Append' to add the current result to the saved data record (see below).
  • Page 80 3-30 Trend Comparing the current measurement with historical data/ reference data The following requirements must be met to be able to use this feature: - Historical data for the respective measurement task exist in the OMNITREND database. - A data set has been declared as a reference in the OMNITREND database.
  • Page 81 3-31 Trend Prewarning if measurement values deviate excessively In the ‘Route’ mode, VIBXPERT recognizes by how much the current measurement value differs from the last recorded historical measure- ment value. If this deviation is large, the green LED on the device lights up and the symbol R! appears in the results screen.

  • Page 82: Near Location (Route)

    3-32 Near location Near location (Route) Data collection on a route progresses more rapidly when measure- ment tasks at near measurement locations are performed simulta- neously. For this purpose, VIBXPERT and OMNITREND provide the ‘Near location’ function: Description - The measurement channels are assigned and the two measure- ment locations are spatially allocated when the route is established in OMNITREND: Near location...
  • Page 83 3-33 Near location Restrictions - The grouping of measurement tasks to a 1+1 measurement is only possible if firmware module ‘2 channels’ (VIB 5.381) has been reg- istered in the device. - For ‘Near locations’, the "Multitask" measurement task is disabled. - In the route runtime setup, a standard sensor should not be set up and the measurement channel must be set to 'Auto' (p. 3-18).

  • Page 84: Triaxial Sensor (Route)

    3-34 Triax sensor Triaxial sensor (Route) A triaxial sensor simultaneously records machine vibrations in three axes (X/Y/Z). VIBXPERT supports the use of a triax sensor in the route as follows: - The three axes of the sensor are mapped in the database with the aid of three measurement locations.
  • Page 85 3-35 Triaxial sensor Requirements For measurements with a triaxial sensor to run without problems, the following requirements must be met: - In the route device setup for the measurement (see p. 2-17), the 'Use triax sensor' option is enabled (see below). - In the route runtime setup, a standard sensor should not be set up and the measurement channel must be set to 'Auto' (p. 3-18).

  • Page 86: Recording

    3-36 Recording Recording With the ‘Recording’* function, you can perform measurements de- * Firmware module ‘Recording’ (VIB 5.385) must be registered. pendent on time or rotational speed. For example, this method can be used to record measurement values under certain operating condi- tions (= rpm range) or at fixed time intervals.
  • Page 87 3-37 Recording The configuration screen appears (see below). Start conditions : The recording starts immediately (MENU -> Start). mmediately : The measurement recording begins after a set period (0 s ... tart in 23:59:59 h). : The measurement recording begins at the set time (time, tart at date) or when the set rpm is reached (0 ... 1000 Hz); rising or fall- ing edge can be selected.

  • Page 88: Starting The Measurement Recording

    3-38 Recording Testing the rpm sensor To test the function and the positioning of the rpm sensor, a test mea- surement can be performed prior to the measurement recording: • Press the MENU key and click on ‘Test speed’. • To return to the configuration screen after the test measurement, press the ESC button. Displaying the characteristic overall values During the measurement recording, a dialog window appears in the measurement screen with an overview of the configuration settings.

  • Page 89: Ending The Measurement Recording

    3-39 Recording Ending the measurement recording The measurement recording is ended when - the stop condition is fulfilled - the ESC button is pressed - the memory card is full - the maximum number of results is reached (65535). Special cases The recording function is used in a wide range of applications and is intuitive in use. However, the following special characteristics should be noted: What happens if the device shuts down due to a fault?

  • Page 90: Time Waveform Recorder

    3-40 Time waveform recorder Time waveform recorder The time waveform recorder can be used to record time waveforms over very long* times. In contrast, the maximum recording length for * Dep. on the sample rate and memory capacity; a 2 GB memory card and a time waveforms using the recording function is approx. 640 seconds sample rate of 512 Hz can record ap- (at a 512 Hz scan rate).

  • Page 91: Data Acquisition At The Vibronet Multiplexer

    3-41 Multiplexer Data acquisition at the VIBRONET multiplexer For automatic data acquisition at many measurement locations of the same type or hard-to-access measurement locations, VIBXPERT and OMNITREND feature the function ‘Multiplexer measurement’. The respective measurement tasks are processed within a route or as a machine template.

  • Page 92: Connecting The Vibxpert To The Multiplexer

    3-42 Multiplexer Connecting the VIBXPERT to the multiplexer Install the BNC connecting adapter (VIB 5.346-MUX) on the 1st mul- tiplexer in the string line as follows: • Open the cover of the multiplexer.  Do not touch strip conductors and components on the PCB! Electro- static charges can damage or destroy them. Preferably you should Note use an ESD wrist strap.

  • Page 93: Automatic Data Acquisition

    3-43 Multiplexer Automatic data acquisition • Connect the VIBXPERT to the multiplexer (see previous section). • Connect an RPM sensor to the VIBXPERT, if necessary. • In the route setup (measurement), select the option ‘ A utostart MUX’ (see p 2-16). • Open the route* with the multiplexer measurement locations. • Click the first measurement location on the first multiplexer in the string linen.

  • Page 94: Diagnostic Measurement At Vibronet Multiplexer

    3-44 Multiplexer Diagnostic measurement at VIBRONET multiplexer For machinery fault diagnosis you can conduct the following measure- ment tasks at a multiplexer measurement location: • Vibration-based measurement types in Multimode • Only with ‘Current Linedrive’ acceleration sensor • 1- or 2-channel 2-channel measurement tasks, such as Orbit, are possible only with two string lines, since only one line is connected and can be processed for each measuring channel.

  • Page 95: Chapter 4: Results

    Results Chapter 4: Results After each measurement, it is possible to save the results and to evalu- ate them on the device. Numerous functions that can be called up with the MENU key in the results screen are available for this purpose (see below).

  • Page 96: Evaluating Results

    Results Evaluating results Before a result is evaluated, make sure that the measurement is valid and no error message is present (see page 2-2). Result details The following information can be displayed: - Measurement Task, Measurement Channel, Measurement Range, - Sensor Type, Date/Time, Status - Statistical Data (for overall values only) • Press MENU and click on 'Result Details'.

  • Page 97: Characteristic Overall Values - Trending

    Results Characteristic overall values - trending If more than two measurements are saved in a file, the results for each overall value are displayed as a trend curve (see p. 3-28f). Markers on the trend curve indicate each individual measurement. The measurement values at the cursor position, the date, the rpm if applicable, and assigned events and comments are specified below the diagram.

  • Page 98: Time Waveform

    Results Time waveform The measurement results are displayed as an XY diagram in the top section of the window (see the standard setting). The data field in the lower half lists the two highest amplitudes (positive & negative). If a threshold value is exceeded, the absolute value and the difference to the measurement value is displayed ('delta', see below).
  • Page 99 Results : Show/hide delta cursor elta Press 'Enter' to switch over between main and delta cursor. In this case the measurement can only be repeated via the MENU key (MENU - 'Remeasure')! The cursor coordinates indicate the distance to the main cursor. The data field specifies the frequency which corresponds to the distance between the main and delta cur- sor (see below).
  • Page 100 Results Calculating the spectrum Based on the time waveform, you can calculate a spectrum that you can save and measure again. • Press the MENU key in the result screen. • Select ‘Postprocessing’ and click on ‘Compute spectrum’. • Set the parameters in the lower window pane (see below): - Input signal : the entire signal is used to calculate the spectrum. ntire signal * Press the F key to switch between the : the spectrum is based only on the visible signal.
  • Page 101 Results Time-synchronous average (Postprocessing) If a trigger signal is recorded in addition to the time waveform, fur- ther information can be obtained. For example, the time waveform can be determined synchronously with every rotation of the shaft. In this way, events in the signal that are synchronous with the RPM are emphasized and stochastic results are suppressed.

  • Page 102: Spectrum, Cepstrum

    Results Spectrum, Cepstrum The measurement result is displayed in the upper pane. The measured time waveform is displayed in the lower pane during the measure- ment. After the measurement, the following information can be dis- played: Amplitude, Envelope, Order - Max 10 (10 highest amplitudes in the spectrum) - Alarms - Frequency marker (only in Route / Template mode) - Trending values (only in TrendingSpectrum)
  • Page 103 Results Info / Alarms This function checks if a threshold value was exceeded. If so, one of the LEDs lights up. To display the thresholds in the spectrum,... • Press the F key to activate the lower window pane. • Select the corresponding check box in the tree view. Info / Frequency marker Frequency markers can be used to more easily identify the character- istic machine and component frequencies in a spectrum.
  • Page 104 4-10 Results Info / Trending values (in the TrendingSpectrum only) A TrendingSpectrum contains, in addition to the time waveform and the corresponding spectrum, up to 30 characteristic overall values. The overall values are formed using frequency bands that are set up in the OMNITREND PC software. The following trending parameters are provided in the lower pane: - Name and current trending value, - Limits of the frequency band (‘Start’ / ‘End’), - Measurement type (e.g.
  • Page 105 4-11 Results The following functions can be called up directly in the MENU: Stroboscope Enable this feature if you want to control a strobe light with the fre- quency at the main cursor position. Move the cursor in the spectrum, to change the flash rate.
  • Page 106 4-12 Results Reference (only in the route / machine template mode) Here you can compare the current spectrum with a reference spec- trum or a historical spectrum. The spectra are displayed in a ‘water- fall’ diagram (see also p. 4-13). Zoom / Scaling See 'Time waveform', page 4-4. Cursor • Press the MENU key and click on 'Cursor' (see below) : See 'Time waveform', page 4-5.

  • Page 107: Display Of Spectra: Waterfall Diagram

    4-13 Results 3D display of spectra: Waterfall diagram If several spectra were recorded for one measurement task (max. 75), these appear in a 3-dimensional diagram - the waterfall diagram. Navigation Navigate through the individual spectra. Move the cursor along the frequency axis. Change view To rotate the waterfall diagram change the display mode: • Press the MENU key and click on ‘Resize display field’. Use the navigation keys to do the following: tilt the diagram around the frequency axis.
  • Page 108 4-14 Results Which of the two axes (X or Z) can be zoomed is displayed by a flash- ing bar along the edge. - If the right bar flashes, the Z-axis can be zoomed with the naviga- tion keys. - If the upper bar flashes, the X-axis can be zoomed with the + / – key.

  • Page 109: Sound Spectrum: Third-Octave And Octave Level Diagram

    4-15 Results Sound spectrum: third-octave and octave level diagram VIBXPERT makes the sound spectrum available for the display and evaluation of acoustic signals. The signal picked up by the micro- phone is broken down in the frequency domain into bands with a constant relative band width (octave bands or third-octave bands).
  • Page 110 4-16 Results  The reference value unit corresponds to the measurement quantity set in the spectrum. The unit can only be changed for user-defined Note quantities. • Set a suitable evaluation filter (decibels (A),(B), (C) or (D)). If you do not wish to evaluate the sound pressure level with a filter, set ‘decibel’.

  • Page 111: Configuring The Result Display (Display Setup)

    4-17 Display setup Configuring the result display (Display Setup) In the Results display, after a measurement: • Press the MENU key and click on 'Display Setup'. In the selection field of the measurement tasks (Multimode): • Highlight the measurement task symbol. • Press the MENU key and highlight the 'Display Setup' entry. • Press the navigation key right and click on 'Measurement' or 'Trend' respectively (s. below). X. Continuous measurement (‘live mode’) In ‘Live mode’, you can check the signal quality before beginning with data collection (see p. 3-4).
  • Page 112 4-18 Display setup B1. Display Setup for measurement: Spectrum / Time waveform : Step size when zooming the X and Y-axis. Zoom Mode: The zoom is made around the main cursor or the gap between the delta and main cursor. : Cross (short) or line cursor (long); line type for the line cursor ursor : A spectrum can be displayed in a curve diagram ('continu- raph type...
  • Page 113 4-19 Display setup C1. Display Setup for measurement: Coastdown, Orbit, Phase The following sections C to E only describe the parameters specific to the measurement type. Global display parameters, such as 'Zoom' and 'Cursor', can be found in sections A and B. ): The results screen displays how overall oastdown verall value the RMS value and one of three peak values in dependence on the...
  • Page 114 4-20 Display setup C2. Display setup for trend: phase ...: When several phase measurements are saved in one file, hase over the phase vectors can be shown depending on the time or rpm (see below). Phase trend diagram Use the F-key to open a menu in the results screen (see below) with the following options: Show result of a single measurement etails...

  • Page 115: Printing Out Reports

    4-21 Reports Printing out reports The print function in VIBXPERT enables printouts of the following reports: - Screenshots - Measurement reports - Route / template reports To be able to print directly on a printer from VIBXPERT, you require: - A printer with USB connection - A VIBXPERT USB printer cable (VIB 5.330 MUSB, accessory) Reports in PDF format can be transferred to a PC, where they can then be printed.

  • Page 116: Configuring The Measurement Report

    4-22 Reports A measurement report is used to create detailed documentation on a measurement. The report contains the results, general information on the operator and additional measurement information. Measurement reports are available for the following measurements: pectrum ime waveform verall values trend rending pectrum ancing...

  • Page 117: Printing Out The Measurement Report

    4-23 Reports <Edit>. The customer list appears. • Press the MENU key and click on 'New'. • Enter the customer data in the text editor. : Information on the inspector/asset. Click in the cor- nspector sset responding text field to edit the information. : The result file name appears in the report. esult file name : Report-specific event.

  • Page 118: Printing Out The Report For Route/Machine Template

    4-24 Reports Printing out the report for route/machine template You can print out the following measurements as reports to document the results in a route/machine template: ll overall values rend parameters from rending pectrum isual inspection ll phase measurements In addition to a table of results, the report contains general informa- tion and additional data on the measurement.

  • Page 119: Loading Reports Onto Usb Pen Drive

    4-25 Reports Loading reports onto USB pen drive Reports in PDF format can be transferred to a USB pen drive and then to a PC, where they can then be printed. To do this, you need the following: - VIBXPERT adapter for USB pen drive - VIB 5.330 MEM - USB pen drive - VIB 5.330-USB Connect the USB adapter to the communication channel (green jack). In the file manager, the USB pen drive is shown as a separate direc- tory ‘USB’. To transfer the report: • Mark the file. • Press MENU and click ‘Copy’...

  • Page 120: Exporting Measurement Data In Ms Excel Format

    4-26 Reports Exporting measurement data in MS Excel format - Exportable measurement data: Overall value, FFT spectrum, balancing result, time waveform, coast-down measurement (amplitude phase and overall value), 2-channel measurements - Compatible version: MS Excel 2003, MS Excel 2007 • Connect VIBXPERT to the PC. • Start the VIBXPERT Utility Program and register the report mod- ule (see p. 6-5f.).

  • Page 121: Chapter 5: Measurement Tasks

    Measurement tasks Chapter 5: Measurement tasks This chapter contains information on the individual measurement tasks and tips for carrying out a measurement.  The '2-Channel Measurements' module must be registered if you want to measure on both channels (see P . 2-23, P . 6-22). Note Characteristic overall vibration values Overall vibration values Characteristic overall vibration values are used for assessing machine, bearing and gear conditions.

  • Page 122: Shock Pulse Measurement

    Measurement tasks Shock pulse measurement Shock pulse signal levels are indicated as a combination of 'Carpet value' (background level, indicative of lubrication condition) and 'Maximum value' (transient peak level, indicative of damage), both expressed in logarithmic [dB] terms. Bearing condition is determined by comparing normalized signal levels and their difference with refer- ence values.
  • Page 123 Measurement tasks Entering the normalization parameters Before the shock pulse measurement starts, the normalization screen appears: • Select the type of normalization: : Shock pulse value specified in dBsv. ormaliZation : RPM is entered manually before the shock pulse measure- anual ment. : RPM is measured with an RPM sensor before the shock xternal pulse measurement.

  • Page 124: Rpm Measurements

    Measurement tasks RPM measurements The Laser-Trigger Sensor (VIB 6.631) is used for RPM measurement and as a trigger encoder. The sensor detects the signals optically, i.e. without contacting rotating machine parts during the measurement. Red laser light is emitted from the sensor head and strikes a measure- ment mark on the rotating shaft. The measurement mark can be light amplifying (e.g. reflective film VIB 3.306) or light attenuating (a black, * If shaft speed <...

  • Page 125: Temperature Measurement

    Measurement tasks Typical installation for a vibration measurement with simultaneous recording of the rotational speed. Sensor with magnetic holder (VIB 6.142R + VIB 3.420) Reflective tape (VIB 3.306) Trigger stand Laser trigger sensor (VIB 6.632) (VIB 6.631) Trigger cable (VIB 5.432-2.9) Temperature measurement For temperature measurements thermocouple type K sensors such as the VIB 8.608 handheld probe or the VIB 8.607-1.5 sensor with mag-...

  • Page 126: Runup / Coastdown

    Measurement tasks Runup / Coastdown The runup and coastdown curves record the changes in the vibration behavior of the machine when it starts up or shuts down. This analy- sis function can be used to determine the resonance frequencies of a machine.
  • Page 127 Measurement tasks A.1 Selecting the measurement task via the measurement task icon: • Highlight the respective icon in the 'Advanced' tab. • Press the F key to display the stored measurement tasks • Select the required measurement task using the identifier. or 2-c: 2-channel measurements : 'Spectrum RPM' measurement type spectrum : 'Overall Value - RPM' measurement type verall alue : Runup tartup : Coastdown oastdown A.2 Selecting the measurement task in the Task Manager: • Highlight the respective icon in the 'Advanced' tab.
  • Page 128 Measurement tasks C. Supplementary information C.1 'Overall Value - RPM' measurement type This type of measurement records the progression of the character- istic overall vibration values relative to the RPM. Points of resonance are indicated by RPMs with increased vibration amplitudes. The Results screen displays the path of the RMS value in the upper diagram; one of the three peak values (0-p, p-p, crest factor) can be displayed in the lower diagram:...
  • Page 129 Measurement tasks C.3 'Phase - RPM' measurement type This type of measurement records the phase amplitude and the phase angle in dependence on the RPM. Points of resonance are indicated by RPMs with increased amplitude and a simultaneous jump in phase angle by (ideally) 180°. The results are displayed either in a Bode diagram or in a Nyquist diagram.
  • Page 130 5-10 Measurement tasks C.4 Two-channel measurement The following differences appear when displaying the results of two- channel measurements. Spectrum - RPM Just one spectrum per channel is displayed on the results screen. Scrolling with the '+/-' key acts on both channels. In the waterfall diagram, you must select the channel whose spectrum is to be displayed.
  • Page 131 5-11 Measurement tasks C.5 Measuring rate (number of measurement points) An important criteria for the quality of the results is the number of measurement values saved. The more measurement values, the more meaningful the measurement. The decisive factor here is how quickly the machine reaches the operating RPM or how quickly it comes to a standstill.

  • Page 132: Shaft Centerline Plot

    5-12 Measurement tasks Shaft centerline plot A shaft centerline plot records the movement of the shaft axis* in a * The movement of the shaft axis at a journal bearing while the machine is running up or coasting down constant rpm is recorded with an orbit (e.g.
  • Page 133 5-13 Measurement tasks Starting the measurement and displaying the shaft centerline plot • Click on the measurement task icon and then on 'Start' (see p. 5-6). During data collection, the values for the DC component are dis- played in the measurement data dialog window (see p. 5-7). • After measurement, press the F key and click on 'Shaft centerline'. The shaft centerline plot appears (see below). Static shaft position By default, the DC component at the smallest rpm defines the static shaft position in the shaft centerline plot.

  • Page 134: Phase Measurement

    5-14 Measurement tasks Phase measurement The phase measurement is used to identify machine faults that cause lines at the same position in the spectrum (e.g. static/ dynamic unbal- ance). The synchronous phase measurement determines the amplitude and the phase angle of the vibration pointer from the RPM-synchro- Synchronous Phase nous components of the vibration signal.
  • Page 135 5-15 Measurement tasks Order filter After the measurement, the order filter can be changed with the +/- Alternative: • Press the MENU key in the results screen. • Select 'Order', press the right navigation key and click on the re- quired order. Scaling To magnify the scaling of the diagram, press the navigation key up. If a phase vector then moves out of the diagram as a result, the maxi- mum display range is also specified relative to the longer (no longer visible) vector (e.g.

  • Page 136: Orbit

    5-16 Measurement tasks Orbit The movement of the shaft axis* at constant speed is measured with two non-contact sensors that are installed in an angular distance of 90 °. This enables identification of machine faults and damage to the shaft unfiltered filtered that become apparent in the vibration behavior of the shaft and di- rectly affect the path of the shaft (e.g.
  • Page 137 5-17 Measurement tasks The signals of both sensors are displayed either as individual signals or as an orbit in a polar chart. The maximum and minimum phase * Keyphaser point: Point in the orbit, at vectors and the order filter are displayed in the data field on the orbit which the reference mark on the shaft display.

  • Page 138: Envelope Analysis

    5-18 Measurement tasks Envelope analysis Envelope analysis is a proven method for detecting periodic impacts in the vibration signal of a machine. It is mainly used for the diagno- Envelope spectrum for roller bearing analysis sis of roller bearing damage and gearing damage and is based on the demodulation of amplitude modulated vibration signals.

  • Page 139: Cepstrum Analysis

    5-19 Measurement tasks Cepstrum analysis A cepstrum is the 'spectrum of a spectrum' and is particularly suitable for detecting regular structures in a frequency spectrum. Above all, in the case of complex patterns with many harmonics and sidebands - that frequently occur if roller bearings or gearings are damaged- a Cepstrum cepstrum simplifies the evaluation of the measurement data.

  • Page 140: Multi-Measurement Task ('Multitask')

    5-20 Measurement tasks Multi-measurement task ('Multitask') A multi-measurement task shortens the measurement times by com- bining several, similar measurement tasks*. It is particularly time- saving in the case of measurement tasks that are measured at the same measurement location with the same transducer and the same * e.g.
  • Page 141 5-21 Measurement tasks Creating a multi-measurement task for a route / machine template Multi-measurement tasks for this operating mode are created in the OMNITREND editor for routes or machine templates. To do this, acti- vate the 'Multitask' option (see below). OMNITREND then automati- cally combines the relevant measurement tasks into a single multi- measurement task.
  • Page 142 5-22 Measurement tasks Multi-measurement task in the 'Multimode' operating mode Multi-measurement tasks are created in the Task Manager: • Open the Task Manager (see P . 3-19). • Select the upper menu 'Measurement task' and press the MENU key. • Click on 'New' and enter a name for the new measurement task. • In the 'Start measurement' field, define whether the measurements should be started consecutively or simultaneously. With the 'Syn- chronous' setting, you can additionally define a trigger channel ('Synchronous + Channel ...').

  • Page 143: Dual Measurement (1+1)

    5-23 Measurement tasks Dual measurement (1+1) In the case of a dual measurement, vibration measurements can be carried out as a overall value, spectrum or time signal on both chan- nels at the same time, such as - Overall value on channel A and spectrum on channel B, or - Spectrum on channel A and time signal on channel B, etc.
  • Page 144 5-24 Measurement tasks The 'Import wizard' appears which is used to select the measurement type, the measurement quantity and the measurement task in three steps (see previous page). Transducer setup and evaluation setup of the measurement task will be automatically applied. Results screen As soon as both measurements are completed, the blue LED lights up if no thresholds have been exceeded or measurement errors have oc-...

  • Page 145: Impact Test - 1 Channel

    5-25 Measurement tasks Impact test - 1 channel The Impact test is used to determine the resonance frequency of a structure. In the case of a rotating machine, it is possible to determine the RPM ranges in which vibrations are disproportionately amplified by resonance* and could damage the machine.
  • Page 146 5-26 Measurement tasks  Tips for setting the measurement parameters Set the 'Trigger Start" time to a negative value in order to record the Note signal before the excitation. If the measurement starts before the excitation, increase the trig- ger threshold in the measurement setup by approximately half (P . 3-22). If the response signal overloads, increase the 'Measurement Range' parameter in the measurement setup accordingly (P . 3-22).

  • Page 147: Modal Analysis - Two-Channel Impact Test

    5-27 Measurement tasks Modal analysis - two-channel impact test The two-channel impact test is used to visualize the dynamic behavior of a structure and to detect operating-critical natural vibration forms. ODS - Operating Deflection Shape To record the vibration modes of a structure, the vibrations are re- Modal / ODS corded at multiple measurement locations during operation and set in relation to a reference measurement location.
  • Page 148 5-28 Measurement tasks always connect the sensor for the system response to channel A. After the last individual measurement is completed, save the data set in a file. With the ODS measurement, the measurement starts without a trig- ger, which means that spectra are recorded until the number of mea- surements is reached (standard = 4).

  • Page 149: Trendingspectrum

    5-29 Measurement tasks  The measurement tasks described on this page are only available in the 'Route / Machine template' mode. The measurement param- Note eters are set in the OMNITREND PC software. TrendingSpectrum A TrendingSpectrum is a measurement template for the route mode. It can be used to make data collection significantly faster and more TrendingSpectrum efficient. A TrendingSpectrum is based on a time signal measure- (Amplitude)

  • Page 150: Dc Measurements

    5-30 Measurement tasks DC measurements For the following measurement tasks, the DC component in the signal can be recorded in addition: - Time waveform with the measuring quantity set to vibration dis- * see page 5-19 placement or user-defined*. - Spectrum with the measuring quantity set to vibration displace- ment or user-defined*.

  • Page 151: Chapter 6: Appendix

    Appendix - Editors Chapter 6: Appendix This chapter provides information on how to use - the numerical and text editors, - the VIBXPERT utility software, - the File Manager - the VIBCODE transducer system. Instructions on handling and maintaining the VIBXPERT as well as the technical data complete this chapter.

  • Page 152: Text Editor

    Appendix - Editors Text Editor Entering text • Press the F key until the cursor appears in the character table (see below). • To enter the text, click on the respective characters in the table . If the required character is not included, then press the '+' key to display further character tables. • Finally press the MENU key and click on 'OK'. • To cancel, press the ESC key. Deleting text • Press the F key until the cursor appears in the text field. • To delete an individual character/word: - Place the cursor to the right of the character/word to be deleted.

  • Page 153: File Manager

    Appendix - file manager File Manager The File Manager administrates the measurements which were saved in the 'Multimode' and 'Balancing' operating modes. In the 'PDF files' folder you will find the print files generated in the PDF format. You can print out or delete these here. The File Manager is opened by ...

  • Page 154: Printing Out The Pdf File

    Appendix - file manager Printing out the PDF file The print files saved in the PDF format can be printed as follows: • Connect VIBXPERT to a printer. • Open the File Manager and select the file to be printed. • Press the MENU key and select 'Print > Printer'. Printing starts.  Details on connecting and setting up a printer can be found in Chapter 2 (p. 2-26).

  • Page 155: Vibxpert Utility

    Appendix - VIBXPERT utility VIBXPERT utility The 'VIBXPERT utility' tool can be used for the following tasks: - Updating firmware (with the VIBXPERT update tool) - Saving and restoring results and settings - Formatting the CF memory card - Export results in CSV format (Phase, Balancing, ODS analysis) - Export results into MS Excel. - Loading screen contents onto the PC. - Loading PDF files onto the PC. - Converting spectra, time signals, impact tests and phase measure- ments to the UFF file format for evaluation in other analysis pro- grams.

  • Page 156: Registering Optional Functions

    Appendix - VIBXPERT utility Registering optional functions The following functions are optional and must be enabled by a pass- word: - Conversion of measurement files into formats that can be pro- Registration cessed by other analysis programs (UFF / IEEE) - Export results into MS Excel.

  • Page 157: Setting Up A Connection With Vibxpert

    Appendix - VIBXPERT utility Setting up a connection with VIBXPERT Data transmission takes place via a network or USB connection. • Connect VIBXPERT to the network or a PC using the cable provided (see also p. 2-32). Connection • Click on the 'Connection' button. • Set the type of connection (USB or Ethernet). • For Ethernet only: Enter the IP address of the data collector in the network in the 'IP address' field (see also p. 2-34f.). • To test the connection, click on the 'Test communication' button. If the connection is working, a yellow 'Smiley' symbol appears. A red 'Smiley' symbol indicates a faulty connection. VIBXPERT successfully connected Configuring VIBXPERT The configuration encompasses the following functions: - Updating the firmware...

  • Page 158: Transferring Files

    Appendix - VIBXPERT utility Transferring files The following files can be transferred from the device to the PC: - PDF files generated with a PDF printer driver. - Screenshots generated by pressing <F> & <-> simultaneously . Get files - Results in CSV format for analysis and display in a spreadsheet program (eg MS Excel).
  • Page 159 Appendix - VIBXPERT utility • Click on ‘Format CF card’ to format the memory card in the device. Risk of data loss! Before proceeding, make sure that all important data and settings are backed up on an external storage device. Formatting deletes all data on the memory card. The process is not reversible! Attention! • Click on OK to start formatting.

  • Page 160: Vibcode

    6-10 Appendix - VIBCODE VIBCODE VIBCODE is a vibration measurement system that uses coded mea- surement points for certain identification of measurement locations on the machine. The system consists of the VIBCODE sensor and the VIBCODE measurement location.  Note also the respective installation and operating manuals: VIBCODE, art. no.: VIB 9.834.G Note Mechanical coding...

  • Page 161: Coding

    6-11 Appendix - VIBCODE Coding ..or, "How are the measurement locations in the data base linked to the measurement locations on site on the machine?" The coding of the “mechanical” measurement locations is defined in the measurement location data base using the OMNITREND software and stamped into a special plastic ring using a tool. The coded ring is installed on the machine together with the measuring pin.

  • Page 162: Measuring With Vibcode

    6-12 Appendix - VIBCODE Measuring with VIBCODE Never use the VIBCODE sensor to take a measurement directly from the machine surface. This sensor must always be locked onto the measuring pin! Attention! Do not remove the VIBCODE sensor neither from the VIBCODE measurement location nor from VIBXPERT during measurement.

  • Page 163: Measuring Vibcode Route/ Pool

    6-13 Appendix - VIBCODE Measuring VIBCODE Route/ Pool • Click on ‘Route’ in the start screen. • Open the route to be measured. • Connect the VIBCODE sensor to a VIBCODE measurement loca- tion: VIBXPERT reads the coding of the measurement location and checks if this is created in the route. If VIBXPERT finds a measurement task, measurement starts automatically.

  • Page 164: Technical Notes

    6-14 Appendix - Technical notes Technical notes VIBXPERT is a precision instrument and should be treated as such. Storage Use the VIBXPERT carrying pouch for transporting VIBXPERT and for making on-site measurements. If VIBXPERT is not used for lengthy periods, stow the measurement instrument in the pouch and con- nect it regularly to the mains to avoid the battery from completely discharging.

  • Page 165: Guarantee

    6-15 Appendix - Technical notes Guarantee The measurement device has a guarantee period of 1 year. Any guar- antee claims expire if service work is carried out by non-authorized personnel. Spare parts, accessories Only original spare parts and accessories may be used. Information on these parts is given in the VIBXPERT product catalog (LIT 01.700.

  • Page 166: Technical Data

    6-16 Appendix - Technical notes Technical data Input Channels Computer 2 analog inputs for Processor Voltage (AC/DC, ±30 V max.) Marvell PXA320 806 MHz Current (AC/DC, ±30 mA max.) Keyboard ® signal (2 mA, 24 V max.) 1 navigation pad and 7 keys (Zoom, Escape, Function, LineDrive accelerometer (10 V, 10 mA max.) Help, Meno, On/Off);...
  • Page 167 6-17 Appendix - Technical notes Firmware features in the 1-channel version Measurement Modes Measurement functions Multimode Multi Measurement Tasks Characteristic Overall Values Combination of several measurements and modes in one Vibration (Acceleration, Velocity, Displacement) task. Current, Voltage (AC / DC) Averaging Shock pulse (bearing condition) none (not for temperature),...

  • Page 168: Troubleshooting

    6-18 Appendix - Troubleshooting Troubleshooting Symptom: VIBXPERT will not start up. The start procedure is not executed com- pletely, the display stops at the screen showing the LINUX penguin. Cause: Failure in the flash memory. Solution: Reload the firmware. Reloading firmware Before reloading the firmware, ensure that the following components are at hand or installed on the PC: - VIBXPERT update tool version 1.47 or higher (see P . 2-37).
  • Page 169 6-19 Appendix - Troubleshooting • Switch VIBXPERT off and on again. The update tool subsequently contacts VIBXPERT and starts transfer of the basic firmware. The progress of the data transfer is shown in the right pane: 'Transferring data X%' • Then it is only necessary to load the firmware: To do this, follow the instructions on Page 2-37.

  • Page 170: Vibxpert Firmware Modules

    6-20 Appendix - firmware modules VIBXPERT Firmware modules Module Operat. mode Measurement type Remarks Basic, Multimode • Overalls - vibration (a, v, s) FFT spectrum: • Overalls - user (current / voltage, each 1. two factory-set tasks* Default registration in AC / DC) 2.

  • Page 171: Upgrade Matrix For Vibxpert Ii Packages

    6-21 Appendix - Upgrade matrix Upgrade matrix for VIBXPERT II packages ex OMNITREND with OMNITREND Advanced, Advanced, Data collector, Advanced, Advanced, 1-channel 2-channel 1-channel 1-channel 2-channel VIB 5.310-1 VIB 5.310-2 VIB 5.314-1E VIB 5.314-1 VIB 5.314-2 Data collector, VIB 5.311-1UG VIB 5.311-2UG...

  • Page 172: Index

    6-22 Index Index Symbole Device Setup 2-12 Diagram type 5-17 1+1 measurement (Dual) 5-23 Language 2-23 Display 2-13 3D display 4-13 Laser trigger sensor 5-4 Protective film 2-13 Laser-trigger sensor 5-4 Display mode 4-18 LED indicators 2-2 Display settings Linear from / to 2-20 Accessories 6-15 Route 2-14 Lines 3-24...
  • Page 173 6-23 Index Order filter 5-15 Tree view 3-8 Order scaling 4-18 Trend 4-19 Safety 1-10 Order spectrum 5-29 Display-Setup 4-19 Sampling rate 3-21 Overall value 4-2 measurement 3-28 Save 2-25, 3-4, 6-3 calculating 4-5 Trending Spectrum 5-29 Scaling 4-4 Display setup 4-17...

  • Page 174: Declaration Of Conformity

    EN ISO/IEC 17050-1 PRÜFTECHNIK Condition Monitoring GmbH, Oskar-Messter Str. 19-21, 85737 Ismaning, Germany declares in sole responsibility, that the equipment Name: VIBXPERT II Type: VIB 5.310 / VIB 5.320 / VIB 5.321 Description: FFT data collector and signal analyzer incl. charger complies with the appropriate European Directives.
  • Page 176 Productive maintenance technology PRÜFTECHNIK Condition Monitoring Oskar-Messter Straße 19-21 85737 Ismaning, Germany www.pruftechnik.com Tel. +49 89 99 61 6-0 +49 89 99 61 6-300 eMail: info@pruftechnik.com Printed in Germany LIT 53.201.05.2012.0EN VIBXPERT , VIBCODE , OMNITREND are registered trademarks ® ®...

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