Rion sxa1/Va Vibration Analysis Program
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This program adds vibration measurement and analysis functions to the RIONOTE Multifunction Measurement System. It allows for simultaneous measurement of vibration acceleration, velocity, and displacement in up to four directions. Vibration data can be analyzed using FFT analysis and envelope processing to diagnose equipment issues. Measurement values are evaluated against ISO standards and tracked over time to monitor equipment condition and identify potential problems.
Rion sxa1/Va Vibration Analysis Program
- 1. Vibration Analysis Program SX-A1VA SX-A1VA Vibration Analysis Program
- 2. This program adds vibration measurement functions to the RIONOTE Multifunction Measurement System. All essential vibration measurement functions are provided, enabling equipment diagnosis and trend management for industrial machinery. The program also supports detailed diagnosis including FFT analysis and envelope processing, and ISO absolute value evaluation can also be performed. Because up to four accelerometers can be connected to the RIONOTE, simultaneous measurement in two horizontal directions and one vertical direction or other measurements of multiple planes can be easily realized. Reference value .A/B 0.71 to 4.5 mm/s (rms) .B/C 1.8 to 9.3 mm/s (rms) .C/D 4.5 to 14.7 mm/s (rms) Absolute value evaluation mode (absolute value evaluation function) ISO 10816 series (Evaluation of machine vibration by measurements on non-rotating parts). According to ISO 10816-1:1995 / Amd. 1:2009, evaluation criteria for mechanical vibration over a specified range are to be decided by agreement between the supplier and the user of the machine, and boundary values for evaluation are to be determined in consideration of the measurement position and the support rigidity of the machine etc. Standard mode (evaluation function) Two threshold values (upper and lower) each are set for acceleration, velocity, and displacement to perform evaluation. Monitoring of vibration sound (acceleration) possible Simple diagnosis By periodically measuring the vibration magnitude and comparing the results to a reference value, the equipment condition (normal or potential problem) can be diagnosed. The example at right shows the screen in absolute measurement mode for four channels. Because the danger state is indicated by purple-red, caution by yellow, and good by green, the display of measurement results lets the operator assess the state of vibration at a glance. Connection examples Accelerometer (Triaxial type) PV-97C※2 /93※2 Charge Converter VP-40 ＊1 When using a 3-axis accelerometer, three VP-52C units are required, one for each axis. ＊2 When using a 3-axis accelerometer, three VP-40 units are required, one for each axis. Accelerometer PV-08A/85/90H etc. With amplifier Accelerometer PV-91C/90T/97I (Triaxial type)＊1 BNC Adapter VP-52C Charge Converter VP-40 Accelerometer Cable VP-51 Series Accelerometer Cable VP-51 Series Accelerometer PV-57 Ⅰ Curled accelerometer cable (length about 50 to 100 cm) VP-51K Ⅰ SX-A1VA Vibration meter mode Measurement simultaneously for vibration acceleration, velocity, and displacement Auto store function continuously records vibration values and tacho data in 100 ms intervals Calculation of average vibration quantity values for a specified measurement period (to facilitate reading of representative values for measurement data with considerable fluctuation) Separate filter settings (HPF, LPF) for acceleration, velocity, and displacement are supported Representative zone boundary value Vibration acceleration rms value mm/s Range of representative zone boundary value Zone boundary value A/B 0.71 to 4.5 Zone boundary value C/D 4.5 to 14.7 Zone boundary value B/C 1.8 to 9.3 45 28 18 14.7 9.3 11.2 7.1 4.5 2.8 1.8 1.12 0.71 0.45 0.28
- 3. What is misalignment? Core deviation Face runout Core deviation and face runout Misalignment refers to a state where the rotation center line of two rotary axes that are joined by a coupling is not in a straight line. This can be due to core deviation, face shift or a combination of these or similar conditions. When misalignment occurs, face runout can cause an increase in the thrust load acting on the bearing, which shortens the service life of the bearing. Misalignment In the case of misalignment, a large frequency component that is an integer multiple of the number of revolutions appears in the axial direction. The multiplication factor of the vibration component depends on the type of bearing. What is unbalance? Unbalance occurs when the center of gravity of a rotating body is displaced from the center. Different types of unbalance include static unbalance, coupling unbalance, and dynamic unbalance. When unbalance occurs, the load acting on the bearing in the circumferential direction increases, which shortens the service life of the bearing. Static unbalance Coupling unbalance Dynamic unbalance Unbalance Unbalance is a condition that occurs in the rotary direction. It is characterized by an increase only in the vibration component that is equal to the number of revolutions. Other vibration frequency components will show almost no change. The vibration amplitude is proportional to the degree of unbalance. When the rotation frequency increases, the amplitude increases by the square of the number of revolutions. Detailed diagnosis (FFT analysis and envelope processing) Bearing fault The bearing fault manifests itself by large acceleration. Envelope analysis reveals peaks at regular intervals, as shown in the illustration. When the dimensions of the bearing parts, number of rolling elements, number of shaft revolutions etc. are known, the faulty part can be determined from the primary frequency of the series of peaks. Time waveform FFT spectrum For failure diagnosis of bearings, envelope processing is used because it is necessary to know the repetition period of the shock waveform. ① Shock waveform due to bearing fault ② Absolute waveform value ③ Envelope processing using envelope filter ④ FFT analysis Repeat cycle Repeat cycle Repeat cycle Repeat cycle form Time wavef For failure d used becau period of the ① Shock waveform due to bea ④ FFT anal Repeat cycle Repeat cycle Envelope processing The FFT analysis function and envelope processing function (acceleration envelope processing) can be used to determine abnormal conditions and to assess failure stage and location. Three examples for analysis using patterns to analyze vibration causes are shown below. FFT spectrum FFT spectrum
- 4. Trend management (relative value evaluation) SX-A1VA program can store the data tagged with information of the measurement point and can output the data all together for each measuring object. By using spreadsheet software such as Excel enables trend management of the machinery condition. In order to assess changes in the vibration of rotating machinery or similar which can indicate problems and possible causes, it is necessary to effectively accumulate and manage measurement data. Reference values can then be determined based on these data for example to set caution and danger threshold values. When a caution threshold is exceeded, monitoring should be strengthened, and when the danger threshold is reached, detailed diagnosis will normally be performed. With many common types of vibration acceleration, values that are about 2 to 3 times above normal are considered caution indicators and a further increase by a factor of 2 to 3 will indicate a danger state. For a given piece of machinery, vibration measurement location, measurement direction, and measurement period are determined, and a graph in which measured values are entered in a time series is created (trend management graph). 3-20-41, Higashimotomachi, Kokubunji, Tokyo 185-8533, Japan Tel: +81-42-359-7888 Fax: +81-42-359-7442 1711-1 1801.P.D ISO 14001 RION CO., LTD. ISO 9 0 0 1 RION CO., LTD. Distributed by: RION Co., Ltd. is recognized by the JCSS which uses ISO/IEC 17025 (JIS Q 17025) as an accreditation standard and bases its accreditation scheme on ISO/IEC 17011. JCSS is operated by the accreditation body (IA Japan) which is a signatory to the Asia Pacific Laboratory Accreditation Cooperation (APLAC) as well as the International Laboratory Accreditation Cooperation (ILAC). The Quality & Environmental Management system Center of RION Co., Ltd. is an international MRA compliant JCSS operator with the accreditation number JCSS 0197. http://rion-sv.com/ ＊ Windows is a trademark of Microsoft Corporation. ＊ Specifications subject to change without notice. This leaflet is printed with environmentally friendly UV ink. FFT analysis mode Power spectrum Time waveform of 1 frame Frequency range 100 Hz, 200 Hz, 500 Hz, 1 kHz, 2 kHz, 5 kHz, 10 kHz, 20 kHz Number of analysis lines 200, 400, 800, 1600, 3200 (Number of sampling points: 512, 1024, 2048, 4096, 8192) Time window functions Rectangular, Hanning, Flat-top Average processing functions Linear average, Exponential average, Maximum value hold (MAX) Display functions Display units Acceleration: m/s2 , G, in/s2 , Velocity: mm/s, in/s, Displacement: mm, μm, mil Waveform recording Recording of vibration waveform during measurement Sampling frequency Vibration meter mode: 51.2 kHz (fixed) FFT analysis mode: Frequency range x 2.56 Quantization bit rate 24 bit (fixed) Trigger measurement Trigger modes Free, Single, Repeat Trigger source Vibration meter mode: Vibration quantity, Time, External, Tacho pulse FFT analysis mode: Waveform, Time, External, Tacho pulse Specifications Number of input channels Max. 2 (with SA-A1B2) Max. 4 (with SA-A1B4) (Number of logical channels: Using one signal input, settings for analysis of multiple vibration quantities such as acceleration, velocity, displacement, acceleration envelope etc. can be made.) Vibration frequency range Acceleration: 0.02 to 141.4 m/s2 (rms) (using PV-57I) Velocity: 0.2 to 141.4 mm/s (rms, at 159.15 Hz) Displacement: 0.02 to 40.0 mm (EQ peak-peak, at 15.915 Hz) Measurement frequency range Acceleration: 1 Hz to 20 kHz (Electrical characteristics) Velocity: 3 Hz to 3 kHz Displacement: 3 Hz to 500 Hz Acceleration envelope: 1 kHz to 20 kHz Filters High-pass filter 1 Hz, 3 Hz, 5 Hz, 10 Hz, 1 kHz Low-pass filter 500 Hz, 1 kHz, 5 kHz, 10 kHz, 20 kHz Vibration meter mode Acceleration: rms, EQ 0-peak, Waveform peak, Crest factor Velocity: rms, EQ 0-peak Displacement: rms, EQ 0-peak, EQ peak-peak Sampling frequency 51.2 kHz Store functions Instantaneous value store, Auto store, Average value store Threshold evaluation Allows setting a threshold value for a vibration quantity, with on-screen indication function when the vibration quantity exceeds the threshold during measurement ISO absolute value Evaluation of instantaneous value or average value can be evaluation function performed based on ISO 10816-1:1995/Amd.1:2009 Trend management graph Measurement point Measurement value Time series Evaluation Waveform processing software for display and analysis of waveform data collected with SX-A1VA Waveform Analysis Software AS-70 Option