The CF-4700 FFT comparator is a pass/fail judgment machine used on production lines that is highly effective in accurate quality inspection by analyzing sound or vibration from products. As being incorporated our accumulated FFT technology over the years, the CF-4700 enables pass/fail judgment by extracting the amount of fluctuation of signal size focusing on a specific frequency band.
The CF-4700 comparator has newly adopted the Amplitude Modulation Component Extraction Function, besides inheriting the frequency level- or waveform shape-based judgment functions from the existing CF-4500 FFT model. The new function enables judgment on the basis of the amount of periodical fluctuation of extracted sounds or vibrations. This function is effective for making judgments on fuzzy creaks or chattering sound by a motor-driven device in operation. Moreover, two functions which are included in the Amplitude Modulation Component Extraction Function enable measurements such as 'monitoring of bearing vibrations' (by using the band pass filter and envelope functions), as well as 'auditory inspections of vibrations through headphones' (by using the monitor function which amplifies inaudible vibrations to audible sounds).
For users getting started on pass/fail judgment by frequency spectrum
The CF-4700 comparator comes with a new assist function that enables users to set a judgment range by a simple operation.
This assist function reads differences in levels of sounds or vibrations from passed and failed measurement data files respectively, which makes it easier to set a judgment range, even when conducting a pass/fail judgment by frequency spectrum for the first time.
The Block Comparator Function for pass/fail judgment from the level of characteristic frequency signal using a preset judgment block area.
The Shape Comparator Function for pass/fail judgment by waveform shape. (Option)
The Tracking Function for pass/fail judgment by capturing level variation in specified order while rotational speed is varied. (Option)
The Amplitude Modulation Component Extraction Function that enables pass/fail judgment by extracting the amount of periodical fluctuations in sound or vibration caused by buzzing or chattering. (Option)
The Assist Function for setting the judgment block area from the difference between frequency characteristics of OK and NG products.
Accepts TEDS sensor for automatic unit calibration. (Accelerometer and microphone that conform to IEEE 1451.4 ver. 0.9 and ver. 1.0)
The Cable Disconnection Detecting Function for detecting cable disconnection or connector trouble automatically when using constant current line drive (CCLD) type sensor.
Measurement conditions and data can be stored on a USB memory.
An open collector output for the judgment results of total and individual blocks to PLC*. The main unit is controllable by command assignment (up to 9 inputs).
The Power Source Backup Function prevents loss of measurement data in case of a main power down. (Option).
* Programmable Logic Controller
Functions
1. Block Comparator (Judging by frequency level)
The Block Comparator Function makes pass/fail judgments using a block area which is set in a certain frequency and level range. The judgment is made in terms of whether a peak value or level of a target signal coincides with the conditions which are set in advance or not. 6 kinds of judgment methods (level, peak level, peak max, inside max, partial overall, areal content rate) are available for each block. The judgment block can be determined by drag operation at a touch of a screen or by directly entering a numeric value on a list screen.
Block Comparator Function 
Assist Function
2. Shape Comparator (Judging by shape of waveform)
The Shape Comparator Function makes pass/fail judgments by waveform shape. By setting a judgment line, this function enables pass/fail judgments on subtle variations in a time waveform or on differences in spectral shapes. In order to avoid misjudgment due to instantaneous noises in a time waveform, if the number of data exceeding the judgment level is equal to or smaller than a set value, they are assumed to be noises and can be excluded from the target data for the judgment
CF-0472 Shape Comparator Function 
3. Shape Comparator of tracking waveform (Judging by shape of 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-4700 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 pass/fail judgments by its level or changing situation.
CF-0472 Shape Comparator Function
CF-0471 Tracking Function
4. Amplitude Modulation Component Extraction Function
(Judging by the amount of fluctuation of signal size in a specific frequency band)
The Amplitude Modulation Component Extraction Function is a preprocessing function to extract the amount of fluctuation of signal size in a specific frequency band. This function is effective for making judgments on abnormal sound or vibration stemming from fluctuations in signal size, and can be used as a preprocessing function for making pass/fail judgments on fuzzy creaks or chattering by a motor-driven device in operation. Also enables measurements such as 'monitoring of bearing vibrations' using the bandpass filter and envelope functions, and 'auditory inspections of vibrations through headphones' using the monitor function which amplifies inaudible vibrations to audible sounds.
CF-0473 Amplitude Modulation Component Extraction Function
5. Power Source Backup Function (Effective countermeasure against accidental power failure)
At the production site, an instantaneous power failure or sudden large drop in the voltage of the production line's main power could occur accidentally. The Power Source Backup Function deactivates the CF-4700 in a normal manner in the event of a main power down of the production line. There is no need to prepare an uninterruptible power supply separately. Moreover, presetting of startup conditions helps a smooth restart at the time of power restoration. This function also allows for centralized power control of the production line. In other words, the CF-4700 can be turned on or off by mere operation of the control panel of the production line's main power.
CF-0478 Power Source Backup Function
Front & Rear Panel
System Configurations
Function used : CF-0473 Amplitude Modulation Component Extraction Function
Damage of bearings causes abnormal vibrations. The CF-4700 performs diagnosis of bearings by inputted signal from an accelerometer attached on the rolling bearing. A basic frequency analysis according to a damaged part can be performed by optional band pass filter and envelope function (included in the CF-0473 Amplitude Modulation Component Extraction Function), which filters a frequency band in vibration caused from a damaged bearing. The amplitude in a frequency band tells the timing of bearing maintenance. Also the filter can be set while listening to the sounds from bearing through headphones.
Function used : CF-0473 Amplitude Modulation Component Extraction Function
Function used : CF-0471 Tracking Function + CF-0472 Shape Comparator Function
Function used : CF-0472 Shape Comparator Function
Function used : Block Comparator Function
Function used : Block Comparator Function
Function used : Block Comparator Function
| Digital I/O | Recommended Connection Circuit / Specifications | |
|---|---|---|
| DIGITAL INPUT The following functions are assigned to the connector. • Control by command assignment (max. 9 terminals) • Panel condition selection (4 terminals) • Judgment block changeover (4 terminals) |
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Input type : Driven by contact or open collector (shared common, 9 inputs and common are isolated together)
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STATUS OUTPUT • OK • NG • ERROR |
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| Output type : Open collector (4 outputs are separated, each signal is isolated.)
Output withstand voltage : 30 V
Output current : Max. 25 mA (sink) Collector saturation voltage : 1.0 V or less Logic : Negative logic (Low=1, High=0) Applicable connector : FK-MC 0,5/8-ST-2,5 (by Phoenix Contact. GmbH & Co. KG) (provided as a standard accessory) |
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| COMP OUTPUT Any 5 judgment setups can be selected from 20 and the results can be outputted. |
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| Output type : Open collector (shared common, 5 outputs and common are
isolated together)
Output withstand voltage : 30 V Output current : Max. 25 mA (sink) Collector saturation voltage : 1.0 V or less Logic : Negative logic (Low = 1, High = 0) Applicable connector : FK-MC 0,5/6-ST-2,5 (by Phoenix Contact. GmbH & Co. KG) (provided as a standard accessory) |
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Specifications
Input Section
| General input | |
| Number of input channels | 1 channel |
|---|---|
| Input connector type | BNC (Type C02) |
| Input type | Single-ended, isolated |
| Input impedance | 1 MΩ±0.5 %, 100 pF or less |
| Input coupling | DC or AC (-3 dB±0.3 dB at 0.5 Hz) |
| Power supply current for sensor (CCLD) | +24 V、E mA |
| TEDS function (* Note) | Accepts accelerometer and microphone conforming to IEEE 1451.4 ver.0.9, ver.1.0.
TEDS ver.0.9 (0: accelerometer, 12: microphone) TEDS ver.1.0 (25: accelerometer, 27: microphone) |
| Maximum input voltage | 30 Vrms (42.4 Vpeak) |
| Absolute maximum input voltage | 70 Vrms AC 1 minute (50 Hz) |
| Input voltage range | 1 Vrms, 31.62 Vrms (2 ranges) |
| DC offset | -60 dB full scale or less (When auto zero is on and DC coupling) |
| Amplitude flatness | ±0.1 dB |
| Harmonic distortion | -90 dB or less (Standard, when optional filter is off) |
| Full-scale accuracy | ±0.1 dB (At 1 kHz) |
| Aliasing | -90 dB or less |
| Amplitude linearity | ±0.0015 % (At full scale) |
| Input level monitor | Lights up in red LED at excessive input. (Lights up in red for 95% of input voltage range) |
| Dynamic range | 110 dB or more |
| A/D converter | 24 bits type ⊿Σ |
| External trigger input | |
| Input connector type | BNC (Type C02) |
| Input voltage range | ±12 V |
| Input impedance | 100 kΩ |
| Input coupling | DC or AC |
| Input frequency range | 0 to 300 kHz |
| External sample input | |
| Input connector type | BNC (Type C02) |
| Input voltage range | ±12 V |
| Input impedance | 100 kΩ |
| Input coupling | DC or AC |
| Input frequency range | 0 to 300 kHz (Not available direct sampling) |
| Analog filter | |
| High-pass filter (HPF) | Cut-off frequency (Selectable) 1, 3, 10 Hz (-18 dB/oct) |
| 10 Hz conforms to vibration severity standards filter. (3 order Butterworth, ISO 2954) | |
| Low-pass filter (LPF) | Cut-off frequency (Selectable) 1k, 10 kHz (-18 dB/oct) |
| 1 kHz conforms to vibration severity standards filter. (3 order Butterworth, ISO 2954) | |
| Digital filter | |
| Frequency weighting filter | A, C (Conforms to IEC 61672-1 Ed.1.0 class 1, ANSI S1.4-1983 type 1, JIS C1509-1: 2005 class 1) |
* 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.)
Display
| Size | 8.4-inch |
|---|---|
| Resolution | 800 x 1600 * |
| Method | TFT color LCD with resistive film type touch panel |
| Brightness adjustment | ON/OFF 2 levels |
| Lighting (backlight) | LED |
Analysis Section
| Frequency range | 1 Hz to 40 kHz |
|---|---|
| Number of sampling points/ analysis points | 256/100, 512/200, 1024/400, 2048/800, 4096/1600, 8192/3200, 16384/6400 |
| Real-time analysis | 40 kHz (16384 points or less, at internal sampling) |
| Overlap processing | MAX, 75 %, 66.7 %, 50 %, 25 %, 0 %, optional setup |
| Window function | Rectangular, Hanning, flat-top |
| Time waveform processing function | First and second order differentials, single and double integrals
Absolute value conversion, DC cancel, trend elimination, smoothing |
| FFT calculation | 32-bit floating point (IEEE single-precision format) |
| Trigger function | |
| Trigger level | -99 to 99 (Unit: %) Default value: 25 % |
| Hysteresis level | 0 to 99 (Unit: %) Default value: 2 % |
| Position | ±8191 |
| Trigger mode | Free, repeat, single, one-shot |
| Slope | +, -, ± |
| Trigger source | CH1, external trigger input |
| Averaging function | |
| Number of averaging setup | 1 to 65535 times |
| Averaging setup time | 0.1 to 999.9 seconds (Interval: 0.1 second) |
| Time domain | Summation average, exponential average |
| Frequency domain | Summation average, exponential average, peak hold, max overall |
| Amplitude domain | Summation average |
| Averaging control function | A/D over cancel |
| Processing Functions | |
| Time domain | Time waveform |
| Frequency domain | Power spectrum, Fourier spectrum, 1/1 octave (bundled), 1/3 octave (bundled) |
| Amplitude domain | Amplitude probability density function, amplitude probability distribution function |
Comparator Function
| Judgment mode | Continuous mode, single mode |
|---|---|
| Judgment result output | Total judgment result, individual judgment result of up to 5 specified blocks or shapes |
| Automatic data storage | Only for NG, all measurement results |
| Timer function | Start delay time setting, judgment execution time setting
0 to 255 seconds (Interval: 1 second) |
| Block mode | |
| Target waveform | Power spectrum, 1/1 octave (bundled), 1/3 octave (bundled), order spectrum |
| Maximum number of setup blocks | 20 blocks |
| Judgment method | Level, peak level, peak max (maximum value), inside max,
partial overall, areal content rate
Judgment method can be specified for each block. |
| Judgment criterion | AND or OR of all specified blocks |
| Shape mode (CF-0472 option) | |
| Target waveform | Time waveform, power spectrum, 1/1 octave (bundled), 1/3 octave (bundled), order spectrum, tracking diagram |
| Maximum number of setting shape lines | 20 lines |
| Judgment criterion | Specified area, specified level |
Memory Function
| Recording device | Selectable from internal storage of main unit, USB memory or SD/SDHC card |
|---|---|
| Data file | Number of storable data : 9990 (max.)
DAT, TXT, BMP, TRC (Data can be saved simultaneously in four formats. (Data storage in TXT, BMP, and TRC formats can be selected optionally.)) |
| Panel condition memory | Memorizes and recalls measurement conditions. (50 types max.) |
Interface
| USB (Type A) | |
| Number of ports | 2 USB 2.0 USB memory, keyboards, wireless LAN module* * For the recommended products, please contact your nearest distributor or contact us at overseas@ONO SOKKI.co.jp. |
|---|---|
| USB (Type mini B) | |
| Number of ports | 1 Data USB 2.0 for USB mass storage class function (CF-0477 option) Data in the main unit is read by connecting to a PC. (Not writable) |
| SD card | |
| Number of ports | 1 Supports SD/SDHC Capacity: 4 GB, 32 GB* * For the recommended products, please contact your nearest distributor or contact us at overseas@ONO SOKKI.co.jp. |
| LAN | |
| Number of ports | 1 10BASE-T/100BASE-TX/1000BASE-T Remote desktop, external control, file sharing (internal storage) |
| RS-232C | |
| Number of ports | 1 |
| Baud rate | 1,200 to 115,200 bps |
| Digital I/O | |
| Digital input | |
| Number of input signals | 9 inputs and common (Insulation withstand voltage 42.4 Vpeak) |
| Applicable connector | FK-MC 0,5/10-ST-2,5 |
| Input function | Control by command assignment (max. 9 kinds)
Judgment block changeover (selectable 4 blocks) Panel condition selection (15 kinds) |
| Status output | |
| Number of output signals | 4 outputs are separated (Each signal is isolated, insulation withstand voltage 42.4 Vpeak) |
| Applicable connector | FK-MC 0,5/8-ST-2,5 |
| Output function | BUSY, OK, NG, ERR |
| Comp output | |
| Number of output signals | 5 outputs and common (Insulation withstand voltage 42.4 Vpeak) |
| Applicable connector | FK-MC 0,5/6-ST-2,5 |
| Output function | Individual judgment output (any 5 outputs) |
General Specifications
| Power requirement | 16 VDC, 3.3 A |
|---|---|
| AC adapter | Power requirement: 100 to 240 VAC, 50/60 Hz Power consumption: 65 VA or less / 150 VA or less (When CF-0478 Power Source Backup Function is installed and charging battery) |
| Operating temperature range | 0 to 40 °C (Humidity 20 to 80 %RH, with no condensation) |
| Storage temperature range | -10 to +50 °C (Humidity 20 to 80 %RH, with no condensation) |
| Outer dimensions | 220 (W) x 185 (H) x 220 (D) mm (Excluding handle, stand, and protruded section) |
| Weight | Without option Approx. 2.8 kg
With options Approx. 3.3 kg (When CF-0473 Amplitude Modulation Component Extraction Function and CF-0478 Power Source Backup Function are installed, including battery pack) |
| Main unit cooling | Naturally air cooling (Fanless) |
| Conforming standards | CE marking |
| Vibration resistance | 9.8 m/s2 (Frequency 10 to 150 Hz, in each of X, Y and Z direction) |
| Shock resistance | 400 m/s2 (11 ms duration) |
| Accessories | ·AC adapter x 1 (PS-P20023 + power cable (2 m)) ·Instruction manual x 1 ·CD-ROM x 1 (Reference guide, utility, etc.) ·SD card x 1 (Exclusive for updates, 512 MB) ·3 Connectors for terminal blocks ·Ferrite core x 1 (E04SR301334, made by SEIWA ELECTRIC MFG. CO.,LTD.) |
Optional Functions
CF-0473 Amplitude Modulation Component Extraction Function (Band pass filter, Envelope and Monitor Function)
| Analog filter |
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| Headphone output |
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| Accessory | Ferrite core x 1 (E04SR200932, made by SEIWA ELECTRIC MFG. CO.,LTD.) |
CF-0478 Power Source Backup Function
| Battery | Lithium ion secondary battery mounted in main unit (detachable) |
|---|---|
| Battery Charging time that the Power Source Backup Function becomes available | 15 minutes or more (At battery level 0 %, surrounding temperature range +10 °C to +35 °C) The battery can be charged only when the main unit is on. |
| Accessory | Battery x 1 |
Product Lineup
| Model name | Product name |
|---|---|
| CF-4700 | FFT Comparator |
| CF-0471 | Tracking Function |
| CF-0472 | Shape Comparator Function |
| CF-0473 | Amplitude Modulation Component Extraction Function
(Band pass filter, Envelope and Monitor Function) |
| CF-0477 | USB Mass Storage Function (CF-0703 USB connection cable is included.) |
| CF-0478 | Power Source Backup Function |
| CF-0702 | Stylus pen |
| CF-0703 | USB connection cable (1.5 m TYPE-A mini-B)(with ferrite core) |
| CF-0470J | Reference guide (Japanese) |
| CF-0470E | Reference guide (English) |
Revised:2021/06/10
