• Abnormal vibration which is generated at the time of gear processing is a main cause of Failure product. Causes for generating abnormal vibration include abrasion or missing of gear teeth and abnormality in machinery itself. After processing gear, operator inspects its state by visual checking or using exclusive machine. Inspections of all processed gears require a lot of time and effort. In this example, the VC-3200 detects and judges abnormal vibration by mounting a sensor on a measurement object (attachable/removable magnetic).  The VC-3200 can monitor abnormality in rotation of first order (rattling of processing machine) and abnormality from damage of gear teeth (high frequency band) with appropriate setup and usage of band pass filter. The VC-3200 greatly helps to reduce labor and improve product quality by prevention of Failure product or its outflow as well as facilitating total inspection.
   
• The VC-3200 can be setup three kinds of frequency bands and make Pass/Fail judgment of each band based on rms, peak or power averaging calculated value (same for all bands). Also it has the comparator delay time setting function and auto operation function. The comparator delay time setting function removes the unwanted signal at the time of starting measurement and the auto operation function can control the timing of judgment by inputting control signal from external device such as PLC*. Although the VC-3200 can be operated by 24 VDC (22 to 26 VDC) as standard, you have an alternative to use it at 100 VAC by connecting the optional AC/DC convertor VC-0352.
   
• Connecting the VC-3200 to a PC via RS-232C interface enables storing the measured data and so on.
   
• By connecting a pair of commercially sold headphones to the VC-3200, it is possible to make hearing check of vibrating sound. Moreover, it can be used instead of conventional stethoscopic probe. Output signals are provided for each band, enabling an observation for vibration phenomenon on each frequency band.

* PLC: Programmable Logic Controller