FFT Applications
FFT Fluctuation · imbalance analysis
F-1-1 Speed fluctuation analysis of production line of paper, film, or similar product
- This example shows how to analyze rotation speed fluctuation (rate of rotation variability) of a take-up roller for paper pulp, a magnetic tape, an industrial film, or a similar product. The RP-7400 roller encoder (1200 pulses/1 rotation) is used for the analysis. The RP-7400 detects line speed of an object to be measured with its roller in direct contact with the object. Then the FV-1500 high-response F/V converter calculates the variable period of the line speed and outputs it to the CF-9200A Portable 2ch FFT analyzer. On the CF-9200A, the rate of speed fluctuation is obtained by performing frequency analysis of the speed fluctuation. If additionally the LG-9200 optical detector is deployed to generate a pulse timing signal per a rotation of the roller, which is used as a trigger and enables measurement in synchronization with the roller rotation, speed fluctuation per a rotation of the roller and its timing can be checked.
Product list
| Model | Product name | Remarks | Qty | |
|---|---|---|---|---|
| 1 | CF-9200A | Portable 2-ch FFT Analyzer | 10.4-inch LCD touch panel, 2-channel input, wide dynamic range 120 dB or more, compact and light weight, high spec FFT analyzer with mobility | 1 |
| 2 | FV-1500 | F/V converter | Voltage output (full scale mode: 0 to 10 V, deviation mode: 0 ± 5 V), electrical output (full scale mode: 0 to 16 mA/(factory default setting) or 4 to 20 mA) | 1 |
| 3 | RP-7400 | Roller encoder | 1200 P/R, single phase output, for medium speed | 1 |
| 4 | LG-9200 | Optical detector | Distance measurement: maximum 20 mm (when using 12 mm square reflective mark), max response speed: 20 m/s (converted by the circumferential speed of rotating shaft), accessory: 12 mm square reflective mark (1 sheet/25 pieces) | 1 |
| 5 | TM-4110 | Digital tachometer | Rotation speed display only/Period of time measurement | 1 |
| 6 | AX-2050N | Power cable (3m) for the TM-3110 | Crimp terminal -3p | 1 |
| 7 | MX-603 | Conversion cable (0.3 meter) | TM 1.25-3.5S-C02 (BNC-J-3) | 1 |
| 8 | RP-0181 | Signal cable | Cable for the RP-7400 series (5 m) (Optional) | 1 |
| 9 | MX-105 MX-110 MX-115 MX-120 |
Output cable | Output cable for the FV-1500/TM-3110 series (BNC-BNC 5 m, 10 m, 15 m, 20 m) (Optional) | 1 |
| 10 | MX-7105 MX-7110 MX-7115 MX-7120 |
Signal cable | Output cable for the LG-9200 series (5 m, 10 m, 15 m, 20 m) (Optional) | 1 |
| 11 | HT-011 | Reflective mark | Reflective mark for the LG-9200 series (1 sheet/25 pieces, 10 sheet/1 pack) (Optional) | 1 |