Vibration Comparator

VC-2200/3200

 

CE marking

 

*The above photo includes Vibration Comparator (VC-2200/3200) and an accelerometer (NP-3331N30), cable (NP-0143), magnet base (NP-0100) besides.
*The NP-3331N30 and NP-0100 are sold separately.

The VC-2200/3200 is a Vibration comparator which is used for maintenance and constant monitoring of production facilities with high accuracy, high function, and low cost in a single unit.


The VC-2200/3200 Vibration Comparator utilizes high-speed calculation by employing a digital signal processor (DSP) in DIN size. Newly installed TEDS function enables high performance calculation, time reduction, and less human errors in setup.


From the output signal of an accelerometer, the VC-2200/3200 simultaneously judges two different frequencies with one unit. Besides, the data is easily managed with a PC. The VC-2200/3200 has multiple roles including detection, judgment, and data management.


The VC-2200/3200 features checking of "visual and auditory". It has function of checking the vibration with sound by connecting headphones as well as checking the vibration with view by on-screen numerical displays and bar graphs.


The "comparator gate input function" is also equipped which can extract only the necessary vibration phenomenon by controlling the timing signals from a PLC. All of these functions are packed into a compact DIN size (96mm X 96mm).


Since the VC-3200 has digital filters, measurement modes more than the VC-2200, it works effectively in measurement that requires detailed judgment condition settings.


Features

• NEW FUNCTION


1. TEDS FunctionVC-2200/3200 (*Available when it is connected to an accelerometer with TEDS function.)

It avoids setting errors, saves your time and effort of troublesome calibration and measurement preparation.


2. Logarithmic bar chart VC-2200/3200

 

Easily viewable small level vibration


3. Headphone volume MUTE function VC-2200/3200

 

Mute function protects ears from impulsive sound when a sensor is mounted etc.


4. Settings of measurement/judging conditions by one command VC-2200

 

Measurement conditions or judging conditions can be set by one command. Selectable from setting in a batch or each setting.

*The VC-3200 can memory 5 conditions depending on the product judgment conditions.


5. Power averaging operation/judgment function VC-3200

 

Power averaging operation and its judgment are possible.


6. ISO 2954:2012 compatible filter VC-3200

 

Enables rotation and mechanical vibration measurement of reciprocating devices.

Functions inherited from the VC-2100/3100 (previous model)

With Analog output

Simultaneous output of AC and DC signal for each specified band Useful for connection to FFT Analyzer or recorder

Digital display function

Displays vibration levels in both numericals and a bar chart on the screen.

2 –band simultaneous judgment

VC-2200/3200 featuring 2-band judgment based on whether rms or peak value for each band. Judging by vibration value, more complicated judgment can be made easily.

Compact size of DIN 96 x 96

Multi-function in a single compact body. Designed in consideration of installation to the panel.

Comparator delay time setting

If vibration exceeding the judgment level lasted for the specified period or longer, the comparator output can be made. It prevents misjudgment caused from human error that an operator touch the sensor with a tool etc. in mistake.

Comparator gate input

This is used for automatic judgment such as quality judgment of product lines. The timing can be controlled to measure vibration phenomena at the right time.

Headphone connection

Vibration sound can be checked when connecting commercially available headphones. Also used as the substitute for an auscultation rod. Phenomenon of the each specified band can be checked.

Memory function (VC-3200)

The VC-3200 has a memory function. Since it remembers the setting conditions before power off, you can immediately start measurement with same setting conditions. The VC-3200 has also data memory function to memory measured data.


Application example

Quality judgment of products using vibration

-Pass/fail judgment of bearing using vibration-

Rotate the bearing and detect the vibration value for judgment. By focusing on the frequency band, it is possible to know the content of detected defect (flaw, foreign material inclusion, imbalance etc.). Speed sensor is also used along with accelerometers. In that case, it is necessary to set the VC-2200/3200 in external input mode.

 

 

 

Related field

  • Home appliance manufacturer(washing machine, air conditioner etc )

  • Automobile manufacturer(power seat, door mirror etc )

  • Parts manufacturer(motor, bearing, gear etc )

Detection of abnormal operation of machine tools

Detecting axial runout of a machine tool.

Axial runout of machine tools has a great influence on the accuracy of finished product. Basically the runout of axis is measured by displacement gauge, which, however, is difficult due to environmental conditions, working conditions, cost, etc. Because the VC-2200/3200 can detect abnormality of axis according to vibration level, it is not influenced by environmental conditions and can be used for usual monitoring. The greater the axial runout, the greater the vibration level. In other words, monitoring the amount of vibration continuously and checking it lead to finding abnormality of the machine tool.

Related field

  • Manufacturing and processing of machine tool

  • Vibration monitoring of an endurance testing machine, engine, baring, bear teeth

Facility monitoring

-Monitoring vibration to detect abnormality of bearings, gears and other parts of production facilities without attendance-

Facility diagnosis used to take a lot of work and time. An operator must measure and keep watching vibration from the facility because the vibration change gives an indication to know the timing of parts replacement or even abnormality. The VC-2200/3200 can continuously monitor vibration to detect unusual movement, prevent it from serious breakage and save the labor. The frequency band can be specified that might indicate the abnormality.

 

Related field

  • Iron and steel

  • Chemical plant

  • Plant management of production line etc.

Detection of break and wear of tool

Detecting drill bit break, tool bit break etc of operating machine tool without attendance

For the machines which process quite a large quantities of parts, such as NC machine, unattended operation is employed. If the drill bit or other tool is broken during unattended operation, it causes defective products. Reprocessing or disposal of these defective products is nothing but waste of money. The VC-2200 detects vibration when the drill bit is broken and makes stop the operation if occurred, as a result, minimizes producing defectives. Worn drill bit also lowers processing accuracy. Monitoring vibration change and checking the operation help to improve the processing accuracy.

Related field

  • Parts processing industry

  • Manufacturer of machine tool

  • Monitoring of cutting line in a factory

  • Imbalance detection of grinding stone

Overview specification

Input section

Number of input channels 1

Signal input

Switched between an accelerometer with a built-in preamplifier and an external voltage signal

*Accelerometer with a built-in preamplifier
CCLD(power source for a sensor) : 4 mA DC +24 V

Applicable accelerometer : NP-3331B,NP-3331N20(Discon) (TEDS supported, accelerometer with a built-in preamplifier) ,NP-3331N30 (TEDS supported, accelerometer with a built-in preamplifier)

◆ When you use other than NP-3331B or NP-3331N20(Discon) ,NP-3331N30, please contact your nearest distributer or send us an e-mail (overseas@ONO SOKKI.co.jp)

*External voltage signal
Input voltage : ±5 V
Input impedance : 100 kΩ or more

*Input connector : C02 (BNC)

Cable disconnection detection function
(VC-3200)
Cable disconnection can be detected when using CCLD.
Open collector output (positive) *Common to over output(selectable)
Sensor sensitivity setup 1.00 x10-2 to 9.99 x102 mV/(m/s2)digital input
Unit setup

m/s2  or EU selectable

Input range

0.1 to 50,000 m/s2 (Setup range differs depending on the sensor sensitivity.)
(example : The input range will be 2.000 to 1000 m/s2 when a sensor with 5 mV/(m/s2) sensitivity is used. )

Frequency characteristics 3 Hz to 15 kHz ±0.5 dB
1.5 Hz to 20 kHz ±3 dB
(160 Hz reference value)
Input-referenced noise 3 Hz to 20 kHz band: 30 μVrms or less
Dynamic range Through /AC :
80 dB or more(input voltage range x1, x2, x5)
70 dB or more(input voltage range x10, x20, x50, x100, x200, x500)
THR(Through) : 1.5 Hz to 40 kHz bands
AC : 1.5 Hz to 20 kHz bands
TEDS function (* Note) Available to the TEDS sensor (IEEE1451.4)(Ver1.0 or later)

* Non-insulated type accelerometer may be affected by the noise with the grand loop. Insulation of the sensor mount and cable routing must be performed carefully to avoid interference of noise.

* 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.)

 

External control signal input

Contact input Key protect· reset input· gate input
Input voltage range HI : + 2.4 to + 5.0 V
LOW : 0 to + 0.8 V (Non-voltage contact input available)
Non-voltage input Open circuit voltage : +5 V
Short circuit current : 0.5 mA or less
Contact resistance : 50 Ω or less
RS-232C output Provided as standard

*Transfer speed : VC-2200  9600 bps
                                   VC-3200 9600, 19200 bps
*Connector : DIN 8-pin circular connector
*Cable : AX-5022

Analysis section

  VC-2200 VC-3200 Option (bandpass-filter)
VC-0321
Low frequency band
VC-0322
Intermediate frequency band
VC-0323
High frequency band
Number of setup bands 2 3 - - -
Band filter HPF(Highpass filter)/LPF(Lowpass filter)
OFF
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100 Hz
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300 Hz
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500 Hz
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1 kHz
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3 kHz
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5 kHz
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10 kHz
OFF
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50 Hz
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100 Hz
200 Hz
300 Hz
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500 Hz
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1 kHz
2 kHz
3 kHz
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5 kHz
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10 kHz
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30 Hz
40 Hz
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60 Hz
70 Hz
80 Hz
90 Hz
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400 Hz
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600 Hz
700 Hz
800 Hz
900 Hz
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4 kHz
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6 kHz
7 kHz
8 kHz
9 kHz
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*LPF(Lowpass filter) -48dB/oct Butterworth characteristics -3 dB ± 1 dB at fc
Analog filter LOW cut (Highpass filter) -3 dB±1 dB
-18 dB/oct
at 10 Hz fc
-3 dB±1 dB
-18 dB/oct
at 3Hz,10 Hz* fc
- - -
HI cut (Lowpass filter) -3 dB±1 dB
-18 dB/oct
at 1 kHz, 10 kHz fc
-3 dB±1 dB
-18 dB/oct
at 1 kHz*
- - -

*Low cut 10 Hz and Hi cut 1 kHz of VC-3200: Conforms to ISO 2954-2012
*fc: cutoff frequency

Calculation section

  VC-2200 VC-3200
Measurement mode Selection · RMS value
· Peak value
· MAX hold
· Peak hold
· RMS value
· Peak value
· Peak/MAX RMS factor (PEAK/rms)
· MAX hold
· Peak hold
· Peak/MAX RMS factor hold (PEAK/rms)
· Power average
RMS value RMS value
 
Time constant:
· 125 ms (FAST)
· 250 ms (MID)
· 1 s (SLOW)
Setting selectable


RMS value
 
Time constant:
· 8 ms
· 16 ms
· 32 ms
· 63 ms
· 125 ms (FAST)
· 250 ms (MID)
· 500 ms
· 1 s (SLOW)
Setting selectable
Peak value Peak value of time waveform absolute value
PEAK/MAX RMS factor (PRF) None Peak value ÷ MAX RMS value
MAX hold Holds the MAX value of RMS value
PEAK hold Holds the MAX value of PEAK value
PEAK/MAX RMS factor hold
(PRF hold)
None Holds the MAX value of PEAK/MAX RMS value
Power average None √(1/T×∫<sup>T</sup><sub>0</sub>瞬時値<sup>2</sup>dt
Average time;
OFF
100 ms
200 ms
300 ms
500 ms
1 s
2 s
3 s
5 s
10 s
20 s
Selectable
*During the Power average is set, other measurement mode cannot be set.
Other avaraging function
Tactmax value: TAVG
None Displays max. value for 500 ms.

The number of average: OFF/4/8/16/32/64 selectable

Output section

Analog output THR (through output) / AC output / DC output (AC/DC: select the output of each band)

*Output impedance : approx. 50 Ω
*Through output
    Max. rated output : ±5 V
    Frequency range : 3 Hz to 15 kHz ± 0.5 dB, 1.5 Hz to 40 kHz ± 3 dB
*AC output_Selectable output for each band
    Max. rated output : ±5 V
    Frequency range : 3 Hz to 15 kHz ± 0.5 dB, 1.5 Hz to 20 kHz ± 3 dB
*DC output_Selectable output for each band(rms output)
    Max.rated output : 0-5 V

• Current output function of the VC-2100 (option) : Not supported.

Headphone AC output for each band

*Max. output : 15 mW or more to the rated impedance 24 Ω
*Connector : φ3.5 stereo mini jack

CAL signal output 160 Hz, 1 V0-p ± 3 % (output from through/AC/DC)
Over output Output when input range over or A/D over
Open collector output (negative logic)

VC-2200: output when input range over and A/D over
                Open collector output (positive logic)
VC-3200: output when input range over and A/D over
                Open collector output (positive logic)
                · Shared with disconnection detection output.

*Voltage : DC 30 V or less
*Sink current : 25 mA or less

Comparator output

Function VC-2200: Judgment is made independently for each band. Selection of either rms or peak value judgment for each band

VC-3200: Judgment is made independently for each band. Selection of rms / peak value / peak· maximum rms judgment factor for each band

Comparator level setting Can be set in steps of 1% of the full-scale range
Output Output when over or under the setup value
VC-2200: Open collector output (Output positive and negative logic simultaneously)
VC-3200: Open collector output (Setup selectable from positive and negative logic)

*Voltage : DC 30 V or less
*Sink current : 25 mA or less

Operating time 100 ms or less
Delay time setting Selectable from 0· 0.5· 1· 1.5· 2· 3· 4· 5· 6· 7· 8· 9· 10· 15· 20 -second

Display

Display LCD with backlight
Measurement value display : 4-digit digital display
Display update : 0.5 seconds
Bar chart display (Bar-chart display update time : 0.1 seconds)
                            (Linear/logarithmic display selectable)
Comparator level display
OVER indicator Input range over or A/D over: red light ON
NG indicator Comparator NG output: red light ON
Comparator ON/OFF indicator Comparator ON: green light ON

Others

Condition backup Setting values are saved in memory when the power is switched OFF.
Terminal strip M3.5 screw with square washer

General specification

Power supply Rated DC24 V (±10 %)
Current consumption 0.2 A or less (25 °C)
Operating temperature range 0 to + 50 °C
Storage temperature rage −5 to + 55 °C
Operating humidity range 85 % RH or less (with no condensation)
Outer dimensions DIN 96 x 96 x 112 mm (excluding protruded section)
Material 94V0 PBT(polybutylene terephthalate)
Weight Approx. 500 g
Option VC-0423 Integration software (VC-2200/3200)
VC-0321 Low frequency band-pass filter
VC-0322 Intermediate frequency band-pass filter
VC-0323 High frequency band-pass filter

Revised:2017/04/13



 

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