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Vibration Comparator
VC-2200/VC-3200

VC-2200
VC-2200
VC-2200
VC-2200
VC-3200
VC-3200
VC-3200

To customers who want to start equipment abnormality monitoring and diagnosis, as well as pass/fail judgment of products.

Do you have any of these problems?

■ Equipment Diagnosis
Inconsistencies in judgment due to sensory inspections
Failure to notice equipment abnormalities leading to breakdowns and production stoppages

■ pass/fail judgment
Inconsistencies in judgment due to auditory inspections
Inability to capture abnormalities in numerical values

The Vibration Comparator VC-2200/VC-3200 is a high-performance signal processor that inputs output signals from an acceleration sensor, allowing for vibration level confirmation, machine abnormality detection, and vibration level judgment. With simultaneous digital signal processing capabilities of 2 bands (VC-2200) / 3 bands (VC-3200), it enables "detection", "measurement", and "judgment" for each abnormal phenomenon.

※ The photo includes the main unit (VC-2200/VC-3200), acceleration sensor (NP-3331N20), cable (NP-0143), and magnet base (NP-0100).
※ The acceleration sensor (NP-3331N20), cable (NP-0143), and magnet base (NP-0100) are sold separately.

Video

Vibration Comparator VC-3200
Simple setup procedure

Features

Arbitrary setting function for frequency bands

The key point is to detect necessary information from the overall vibration data.

By extracting anomalies specific to the target object, the level determination becomes more reliable. Two types of bands can be set. Effective values and peak values can be selected for each band. Simultaneous measurement and judgment are possible.

Judgment function (comparator output)

Determination based on quantitative values.

Based on the results of the measurements, a numerical judgment is made, and a negative (NG) signal is output. This is optimal for line inspections and remote monitoring when combined with PLCs.

Analog output function

Also supports detailed analysis.

AC and DC signals for each set band are output simultaneously. They can be used for analysis with an FFT analyzer or for recording.

Headphone connection

Listen and judge: For those who are concerned about this sound.

By connecting commercially available headphones, you can clearly hear the vibration sounds for each set frequency band. This allows even regular workers to distinguish abnormal sounds, a skill usually reserved for craftsmen.

Comparator gate input

Detect necessary information at the right timing.

Control the timing of measurements, allowing for level measurement and judgment at necessary times. This is used when performing automatic pass/fail judgment for products on the line.

TEDS function

Prevent setup errors! Reduce setup load during sensor replacement!

  • TEDS function

Case Studies

pass/fail judgment of products based on vibration

pass/fail judgment of products based on vibration

A pass/fail judgment on bearings will be conducted based on vibrations.

The condition of the bearing is determined by rotating it and measuring the vibration values at that time. By focusing on frequency bands, the specific issues with the bearing, such as scratches, foreign object contamination, and imbalance, can also be confirmed. In addition to accelerometers, speed sensors are also used. When using a speed sensor, the VC-2200/VC-3200 should be switched to external signal input.

related fields

  • Home appliance manufacturer (washing machines, air conditioners, etc.)

  • Automobile manufacturers (power seats, door mirrors, etc.)

  • Other component manufacturers (motors, gears, bearings, etc.)

Detection of abnormal operation of machinery

Detection of abnormal operation of machinery

Detection of spindle runout abnormalities in machine tools.

The runout of the spindle in machine tools significantly affects the finishing accuracy of the workpiece. Normally, the runout amount is measured with a displacement gauge, but due to environmental conditions, handling conditions, and cost considerations, using a displacement gauge can be difficult. The VC-2200/VC-3200 detects spindle abnormalities through vibration, making it robust against environmental conditions and allowing for continuous monitoring. As the runout of the spindle increases, the vibration values also increase, so by monitoring the vibration values, spindle runout abnormalities can be detected.

related fields

  • Machine tool manufacturing and processing

  • Vibration monitoring of durability testing equipment (engine, bearing, gear)

equipment monitoring

Equipment Monitoring

Abnormalities in bearings, gears, etc. are detected and grasped without human intervention.

Traditional equipment diagnostics require significant labor as workers periodically measure vibrations in components like bearing boxes to determine maintenance schedules based on changes in vibration values. There is also a risk of accidents, such as equipment damage, during sudden anomalies. The vibration comparator continuously monitors equipment vibrations on behalf of the workers, helping to reduce labor costs and prevent equipment damage during abnormal situations. Furthermore, it allows for the selection of frequency bands, enabling monitoring that is closer to actual equipment diagnostics.

related fields

  • iron and steel

  • chemical plant

  • Management of equipment such as other production lines.

Detection of tool blade breakage and wear

Detection of tool blade breakage and wear

Detection of blade breakage in unmanned operating machinery such as drills and lathes.

In processes involving a large number of parts, such as those using NC machines, most operations are automated. If a drill bit breaks during operation, the machined product may become defective, requiring reprocessing or, in the worst case, disposal. The VC-2200/VC-3200 vibration comparator detects vibrations during bit breakage and stops the machine, minimizing the production of defective products. Additionally, since tool wear affects machining accuracy, monitoring changes in vibration values due to wear helps improve machining precision.

related fields

  • Parts processing industry

  • machine tool manufacturer

  • Monitoring of the cutting line in the factory.

  • Detection of Unbalance in Sharpening Stones

Specifications

Input section

input channel
1
Signal Input
Built-in preamplifier type accelerometer input or external voltage signal input (switchable)
* Built-in preamplifier type accelerometer: constant current drive (CCLD) 4 mA DC +24 V
Corresponding acceleration sensor /
Insulated type preamplifier built-in accelerometer
NP-3331B, NP-3331N20(TEDS compatible), NP-3331N30(TEDS compatible)
If you are using accelerometers other than these, please contact us.
* External voltage signal: Input voltage ±5 V, Input impedance 100 kΩ or more
* Input connector: C02 (BNC) connector
Disconnection detection function (only for VC-3200)
Detecting cable disconnection when using constant current drive (CCLD)
Open collector output (positive logic) * shared with over output (selectable)
Sensor Sensitivity Setting
1.00 × 10-2～9.99 × 10 2 mV/(m/s 2) Digital input
Unit system configuration
m/s 2 or EU selection
input range
0.1 to 50,000 m/s 2 (the setting range varies depending on sensor sensitivity)
(For example: When using a sensor with a sensitivity of 5 mV/(m/s 2), the range is 2.000 to 1000 m/s 2)
frequency characteristics
3 Hz to 15 kHz ±0.5 dB
1.5 Hz to 20 kHz ±3 dB (reference value 160 Hz)
Input conversion noise
Below 30 μVrms in the frequency range of 3 Hz to 20 kHz.
dynamic range
Through/AC:
Above 80 dB (input voltage range ×1, ×2, ×5)
70 dB or above (input voltage range ×10, ×20, ×50, ×100, ×200, ×500)
THR (Through): 1.5 Hz to 40 kHz range
AC: 1.5 Hz to 20 kHz range
TEDS function * Note)
Compatible with IEEE1451.4 (TEDS) sensors (from Ver 1.0 onwards)

Non-insulated type acceleration pickups may be affected by noise from ground loops. Please use insulated studs. Also, please be careful with cable routing.

* Note) When using third-party TEDS compatible sensors: Depending on the type of TEDS dedicated chip inside the sensor, it may not be possible to read TEDS information.
1: If you are considering purchasing a third-party sensor, please consult with each TEDS compatible sensor manufacturer or retailer for operation confirmation.
2: If you would like to use your TEDS compatible sensor with our TEDS compatible measuring instrument, please confirm operation with our demo products. (Please contact your nearest sales office.)

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 (no voltage contact input is also possible)
No voltage input Open circuit voltage: +5 V
Short-circuit current: 0.5 mA or less
Contact resistance: 50 Ω or less
RS-232C output Standard equipment

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

Analysis Section

 
VC-2200
VC-3200
Option
VC-0321
low frequency band
Filter
VC-0322
Intermediate frequency band
Filter
VC-0323
high frequency band
Filter
Number of Bands
2
3
-
-
-
band filter
HPF:
(high-pass filter)
OFF
100 Hz
300 Hz
500 Hz
1 kHz
3 kHz
5 kHz
10 kHz
OFF
50 Hz
100 Hz
200 Hz
300 Hz
500 Hz
1 kHz
2 kHz
3 kHz
5 kHz
10 kHz
30 Hz
40 Hz
60 Hz
70 Hz
80 Hz
90 Hz
400 Hz
600 Hz
700 Hz
800 Hz
900 Hz
4 kHz
6 kHz
7 kHz
8 kHz
9 kHz
LPF:
(low-pass filter)
OFF
100 Hz
300 Hz
500 Hz
1 kHz
3 kHz
5 kHz
10 kHz
-48 dB/oct Butterworth characteristic
at fc -3 dB ±1 dB
OFF
50 Hz
100 Hz
200 Hz
300 Hz
500 Hz
1 kHz
2 kHz
3 kHz
5 kHz
10 kHz
-48 dB/oct Butterworth characteristic
at fc -3 dB ±1 dB
30 Hz
40 Hz
60 Hz
70 Hz
80 Hz
90 Hz
-48 dB/oct Butterworth characteristic
at fc -3 dB ±1 dB
400 Hz
600 Hz
700 Hz
800 Hz
900 Hz
-48 dB/oct Butterworth characteristic
at fc -3 dB ±1 dB
4 kHz
6 kHz
7 kHz
8 kHz
9 kHz
-48 dB/oct Butterworth characteristic
at fc -3 dB ±1 dB
Analog Filter
LOW cut:
(high-pass filter)
at a cut-off frequency of 10 Hz
-3 dB ± 1 dB -18 dB/oct
3 Hz・10 Hz ※
at fc
-3 dB ± 1 dB -18 dB/oct
-
-
-
HI cut:
(low-pass filter)
at 1 kHz / 10 kHz fc
-3 dB ± 1 dB -18 dB/oct
At 1 kHz / 10 kHz fc ※
-3 dB ± 1 dB -18 dB/oct
-
-
-

* The LOW cut 10 Hz and HI cut 1 kHz of VC-3200 comply with ISO 2954-2012
Note) fc: cutoff frequency

Computation Section

 
VC-2200
VC-3200
Measurement Mode
Switch Selection
  • effective value
  • peak value
  • MAX Hold
  • Peak hold
  • effective value
  • peak value
  • Peak Maximum Effective Value Factor
    (PEAK/rms)
  • MAX Hold
  • Peak hold
  • peak
  • Maximum effective value factor hold
    (PEAK/rms)
  • power average
Effective value: rms
effective value
Time constant:
  • 125 ms (FAST)
  • 250 ms (MID)
  • 1 second (SLOW)
Selectable settings		 effective value
Time constant:
  • 8 ms
  • 16 ms
  • 32 ms
  • 63 ms
  • 125 ms (FAST)
  • 250 ms (MID)
  • 500 ms
  • 1 s (SLOW)
Selectable settings
Peak value: PEAK
Peak value of the absolute value of the time waveform
Peak Maximum Effective Value
Factor: PRF
None
Peak value ÷ maximum effective value
MAX Hold
MAX Hold
Hold the maximum value of the effective value.
Peak hold
PEAK Hold
Hold the maximum peak value.
Peak Maximum Effective Value
Factor Hold
PRF HOLD
None
Peak / Maximum Effective Value Factor
Hold the maximum value
Power Average: PAVG
None
Computation Section
Average time: OFF
100 ms
200 ms
300 ms
500 ms
1 s
2 s
3 s
5 s
10 s
20 s
Selectable

*When the power average setting is enabled, other measurement mode settings are not available.
Other average features
TACT max value: TAVG		 None Display maximum value for 500 ms
Average count:
OFF/4/8/16/32/64 times
Selectable

Output Section

Analog Output THR (thru) / AC / DC simultaneous output (AC/DC: select output for each band)
＊ Output impedance: approximately 50 ohms
＊ Through Output :
Frequency Range :		 Maximum rated output ； ±5 V
3 Hz～15 kHz ± 0.5 dB, 1.5 Hz～40 kHz ± 3 dB
＊ AC Output :
Maximum Rated Output :
Frequency Range :		 Band switchable output
±5 V
3 Hz to 15 kHz ± 0.5 dB, 1.5 Hz to 20 kHz ± 3 dB
＊ DC Output :
Maximum Rated Output:		 Band-by-band switching output (RMS value)
0-5 V
The VC-2100 does not support the optional current output function.
headphones AC output per band

＊Maximum output: 15 mW or more at rated impedance of 24 Ω
＊Connection connector: Compatible with Φ3.5 stereo mini jack
CAL signal output Output 160 Hz 1 V 0-p ± 3 % through/AC/DC
Over output Output during input range over or A/D over,
open collector output (negative logic)
VC-2200 Output during input range over and A/D over
open collector output (positive logic)
VC-3200 Output when input range is over and A/D over
Open collector output (positive logic)
・Shared with disconnection detection output (selectable)
*Voltage: DC 30 V or less
*Sink current: 25 mA or less

comparator output

Function
VC-2200 Independent judgment for each band, with the option to select effective value judgment or peak value judgment for each band.
VC-3200 Independent judgment for each band
Selectable judgment for effective value/peak value/peak-maximum effective value factor for each band
Common judgment for all bands (judgment based on power average value)
Comparator Level Setting Can be set in 1% increments of the full scale range.
Output Output when above or below the set value.
VC-2200 Open collector output (simultaneous output of both positive and negative logic)
VC-3200 Open collector output (positive/negative logic selection settings)
*Voltage: DC 30 V or less
*Sink current: 25 mA or less
operating time below 100 ms
Delay (Continuation) Time Setting 0, 0.5, 1, 1.5, 2, 3, 4, 5, 6, 7, 8, 9, 10, 15, 20 seconds selection

Display

Display LCD with backlight
Measurement value display: 4-digit digital display
Display interval: 0.5 seconds
Bar indicator display
(Bar indicator display interval: 0.1 seconds)
(Linear/logarithmic switchable)
Comparator level display
OVER Indicator Red light on when input range over or A/D over.
NG Indicator Comparator NG lights up red during output.
Comparator ON/OFF Indicator Green light illuminated during comparator function operation.

Others

Condition backup Retain settings even when power is off.
terminal block M3.5 Corner Base Screw with Metal

General specifications and prices

Power Supply Rated DC 24 V (±10 %)
Current Consumption 0.2 A or less (25 °C)
Operating temperature range 0 to +50 °C
Storage Temperature Range -5 to +55 °C
Operating Humidity Range Below 85% RH (without condensation)
Outline Dimensions DIN 96 × 96 × 112 mm (excluding protrusions)
material 94V0 PBT (Polybutylene Terephthalate)
Weight approximately 500 g
Price VC-2200
VC-3200
Option
For VC-2200/VC-3200
・VC-0423 積分ソフト（）
For VC-3200 use
・VC-0321 低周波数帯域フィルター（）
・VC-0322 中間周波数帯域フィルター（）
・VC-0323 高周波数帯域フィルター（）

Inherited functions from previous models (VC-2100/VC-3100)

with analog output AC and DC signals for each setting band are output simultaneously.
They can be used for connection with analysis devices such as FFT analyzers and recorders.
Comparator delay time setting If vibrations above the judgment level continue for more than the set time, the comparator will output.
It prevents malfunctions due to human errors, such as when an operator accidentally hits the sensor with a tool.
digital display function The vibration value is displayed digitally while the vibration state is also displayed simultaneously in a bar graph.
It can also be used as a traditional needle-type (meter display) vibration meter.
Comparator gate input It is used when performing automatic pass/fail judgment of products on the line.
It controls the timing of measurements, allowing for measurement and judgment during necessary vibration phenomena.
2-band simultaneous detection (VC-3200 has 3 bands) Two bands (frequency ranges) can be set, allowing for judgment based on either RMS or peak values for each band.
By making judgments based on vibration values, more complex determinations can also be easily performed.
Headphone connection By connecting commercially available headphones, you can check the vibration sound.
It can be used as a stethoscope. Additionally, since it outputs for each setting band, it is possible to confirm each phenomenon.
DIN 96 × 96 compact size The design is intended for integration into a control panel. Functions for more than two units have been condensed into this size.
Equipped with memory function (only for VC-3200) The condition memory function allows the device to remember various settings when powered off, enabling quick measurement to start upon powering back on. Additionally, the data memory function allows for the storage of measurement data.
Inquire about this product.

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Outline Drawings

Instruction Manuals

Operating Manuals

最終更新日:2025/05/09