The CF-4500 FFT comparator can make OK/NG judgment and quality inspection accurately by analyzing the frequency signal of sound or vibration from products or parts on production lines.
Measuring sound or vibration is popular as an effective method for quality control of products having driven section such as a motor. To ensure higher quality, needs for finding and capturing characteristic signals have been increasing as well as sound or vibration level in recent years. As being incorporated our accumulated FFT technology over the years, the CF-4500 enables OK/NG judgment by extracting caused and characteristic frequency component.
The CF-4500 provides three newer functions in addition to [Block comparator function] which can make OK/NG judgment by characteristic frequency level in signals. [Shape comparator function] enables OK/NG judgment by using signal form. [Tracking function] can also make OK/NG judgment even though rotational speed is changing. You can check abnormal sound by your ears with [Band-pass filter & monitor function]. The combinations of these judgment functions greatly help in higher quality improvement and working effectiveness at production site.
Using shape comparator function, you can make OK/NG judgment by a shape of signal waveforms. Sometimes it is not easy to judge a subtle difference in signal waveforms of sound or vibration etc. even though frequency analysis is performed. This function allows judgment of subtle difference in waveform by setting up a judgment line along the shape of signal waveform. A judgment line is setup by connecting points which are optionally specified.
(Option: CF-0452 Shape comparator function)
Shape comparator of tracking waveform
For sound or vibration measures of rotating equipments, it is important to measure or analyze which rotational speeds increase sound or vibration and which parts of rotating machine cause sound or vibration. The CF-4500 FFT comparator can follow up a change of rotational speed and extract a component of sound or vibration which is based on rotation, and then make OK/NG judgment by its level or changing situation. LG series or MP series rotational sensors by ONO SOKKI can be connected directly to input signals of rotational speed.
(Option: CF-0451 Tracking function + CF-0452 Shape comparator function)
Band pass filter & monitor function
Abnormal sound from products has been inspected by using stethoscopic probes as a sensitive evaluation. With the CF-4500, you can setup frequency band of abnormal sound over optional specified filter while hearing the abnormal sound through headphones.
(Option: CF-0453 Band pass filter & monitor function)
Number of channel
|Input impedance||100 kΩ|
|Input coupling|| AC (0.5 Hz/-3 dB) / DC selectable
(AC is automatically set up when CCLD is used.)
|Kind of signal||Voltage/CCLD (4 mA +24V: TEDS Ver. 1.0 or later)(* Note)|
|Voltage range||10 mV rms to 31.6 Vrms, 8 ranges|
|Dynamic range||90 dB (at 1 Vrm range)|
* Note: If a TEDS supported sensor made by other companies is used, TEDS information may not be read depending on the type of a TEDS tip included in a sensor.
1. If you are considering the purchase of a TEDS sensor made by other companies, please consult to the manufacturer or dealer of the TEDS sensor, and perform the operation check.
2. When you want to use a TEDS sensor you already have with the TEDS supported measurement instruments made by Ono Sokki, please perform the operation check with a demonstration product of Ono Sokki. (Please consult your nearest distributor or Ono Sokki sales office nearby.)
|HPF/LPF filter||HPF:1 Hz,
10 Hz(-18 dB/oct)
LPF:1 kHz, 10 kHz(-18 dB/oct)
(HPF:10 Hz/LPF:1 kHz conforms to vibration severity standards.)
|Frequency weighting||A/C(JIS C 1509-1 Class1, IEC 61672-1 Class 1)|
|Frequency range||1 Hz to 40 kHz, 19 ranges|
|Real-time frequency range||20 kHz|
|Processing function|| Time domain: Time axis waveform
Frequency domain: Power spectrum, Fourier spectrum, 1/1 & 1/3 octave (compound)
|Frequency axis waveform processing||1/jω, 1/jω2, ×jω, ×jω2|
|Averaging||Times (1 to 8192 times), or time (0.1 to 100 seconds)|
Block comparator section
|Waveform type||Power spectrum, octave (1/1, 1/3), order spectrum|
|Maximum allowable number of blocks||20|
|Judgment method||Peak Level, Peak Max, OA, POA, area content percentage, Level (Can be specified a judgment method for each block.)|
|Judgment criteria||AND or OR of specified all blocks|
|Judgment mode||Continuous mode, single mode|
|Automatic data saving function||Data is automatically saved all measurement results or only when the comparator result is NG.|
|Judgment output||Overall judgment and individual judgment of up to five specified blocks or shape.|
|Display||6.5-inch TFT color LCD (640 x 480), touch panel|
|Waveform display mode||Single screen, Dual screen, overwriting|
|Waveform display function|
|Unit of Y axis||m/s2, m/s, mm, μm, Pa, dB, V, Vrms (auto unit conversion by differential and integral calculus)|
|Y axis scale||Rms, 0-p, p-p|
|Unit of X axis||Hz, ORD, r/min, s(sec)|
|X axis scale||Default/expand display function|
|List display||40 points (peak value, harmonic or optionally)|
|Comparator judgment display||List display of comprehensive judgment (OK/NG) or individual judgment for each block|
|Format of screen data||DAT, TXT, BMP, TRC|
|Number of condition memories||50 max|
|Contents||Measurement condition, comparator condition (block or shape setting, judgment condition etc.)|
|Digital I/O||9 kinds of input, 9 kinds of output :open collector (shared common)|
| The function can be available by assigning the following
functions to each terminal.
| Comp-BUSY, OK, NG, ERROR
Individual judgment output (optionally selectable from five items)
|USB||USB 2.0 high speed, terminal for USB memory, terminal for mass storage class|
|For control||LAN, RS-232C|
|Power requirement||24 VDC or exclusive AC adapter(100 to 240 VAC, sold separately)|
|power consumption||40 VA(when 24 VDC), 60 VA (AC adapter in used)|
|Operating temperature rang||0 to 40 ℃(with no condensation)|
|Outer dimension||149 (H)×220 (W)×250 (D) mm not including protruded section|
|Weight||Approx, 3.3 kg|
CF-0451 Tracking function
|Type||Constant width / constant ratio|
|Schedule||Rotational speed / time|
|Maximum analysis order||6.25, 12.5, 25, 50, 100, 200, 400, 800|
|Processing function||Maximum amplitude order, POA, Order Peak, Order Band|
|External sample / rotational sensor input section|| BNC or R03-R6F(Please specify at the time of order.)
CF-0452 Shape comparator function
|Type of waveforms||Time-axis waveform, power spectrum, octave (1/1,1/3), order spectrum, tracking plot|
|Maximum number of standard lines||20 lines|
|Judgment method|| Specifying the range between two standard lines
Specifying the level by one standard line
* The specifications of judgment mode, automatic data saving function and judgment output are same as block comparator’s specification.
CF-0453 Band pass filter & monitor function
|Specified frequency range||HPF, LPF: 50 Hz to 10 kHz(-24 dB/ oct)|
|Monitor output connector||φ3.5 mini jack|
CF-0454 Envelope & filter function
|1 kHz Low pass filter method|
* CF-0454 Envelope & filter function includes functions of CF-0453 Band pass filter & monitor.
CF-0458 Power source backup function
|Model name||Product name|
|CF-0452||Shape comparator function|
|CF-0453||Band pass filter & monitor function|
|CF-0454||Envelope & filter function|
|CF-0458||Power source backup function|
|CF-0459||Panel protection cover|
|AC adapter (PS-P20018A)|
|Power cable for 120 V (VM0600-VM0299A)2 m|
* CF-0454 includes CF-0453 band pass filter & monitor function.
* The number of rotational pulse input of CF-0451 tracking function can be selected from BNC or rotational sensor input.