![Mitsubishi Electric SW1DNN-WS0ADR-B Скачать руководство пользователя страница 179](http://html.mh-extra.com/html/mitsubishi-electric/sw1dnn-ws0adr-b/sw1dnn-ws0adr-b_operating-manual_1811861179.webp)
Chapter 9
176
Logic programming – Function blocks
Determine the time between signal changes for the speed limit:
Signal frequency for release = 0.25 Hz × 4 teeth/revolution = 1 Hz
Max. input pattern period = 1/1 Hz × 185°/360° = 514 ms
Time between signal changes = 514 ms + 10 ms = 524 ms
Min. time between signal changes = 530 ms (rounded up to multiples of 10 ms)
Example 2: 1/3 gap 180° phase shift
8 teeth per revolution
Switching tole/–2°
teeth 118° to 122° (corresponds to t
low
, t
high
); signal
change 118° to 122° (corresponds to t
1
to t
4
)
Maximum shaft speed = 120 rpm = 2 Hz
Shaft speed for release = 12 rpm = 0.2 Hz
Logic execution time = 16 ms
Check the maximum signal frequency for incremental signals:
Max. signal frequency = 2 Hz × 8 teeth/revolution = 16 Hz
Smallest t
low
= 1/16 Hz × 118°/360° = 20.5 ms
greater than the logic execution time
Smallest t
high
= 1/16 Hz × 238°/360° = 41.3 ms
greater than the logic execution time
Determine the time between signal changes for the speed limit:
Signal frequency for release = 0.2 Hz × 8 teeth/revolution = 1.6 Hz
Max. input pattern period = 1/1.6 Hz × 122°/360° = 212 ms
Time between signal changes = 212 ms + 10 ms = 222 ms
Min. time between signal changes = 230 ms (rounded up to multiples of 10 ms)
Example 3: Zero pulse 10°
1 tooth per revolution
Switching tole/–1°
teeth 9° to 11° (corresponds to t
low
, t
high
); signal
change 349° to 351° (corresponds to t
1
to t
4
)
Maximum shaft speed = 300 rpm = 5 Hz
Shaft speed for release = 3 rpm = 0.05 Hz
Logic execution time = 4 ms
Check the maximum signal frequency for incremental signals:
Max. signal frequency = 5 Hz × 1 tooth/revolution = 5 Hz
Smallest t
low
= 1/5 Hz × 9°/360° = 5 ms
greater than the logic execution time
Smallest t
high
= 1/5 Hz × 351°/360° = 195 ms
greater than the logic execution time
Determine the time between signal changes for the speed limit:
Signal frequency for release = 0.05 Hz × 1 tooth/revolution = 0.05 Hz
Max. input pattern period = 1/0.05 Hz × 11°/360° = 611 ms
Time between signal changes = 611 ms + 10 ms = 621 ms
Min. time between signal changes = 630 ms (rounded up to multiples of 10 ms)
Содержание SW1DNN-WS0ADR-B
Страница 2: ......
Страница 287: ...Chapter 15 284 Annex 15 Annex 15 1 Example application reports 15 1 1 Example application Newspaper palletizer ...
Страница 288: ...Chapter 15 285 Annex ...
Страница 289: ...Chapter 15 286 Annex ...
Страница 290: ...Chapter 15 287 Annex ...
Страница 291: ...Chapter 15 288 Annex ...
Страница 292: ...Chapter 15 289 Annex ...
Страница 293: ...Chapter 15 290 Annex ...
Страница 294: ...Chapter 15 291 Annex ...
Страница 295: ...Chapter 15 292 Annex ...
Страница 296: ...Chapter 15 293 Annex ...
Страница 297: ...Chapter 15 294 Annex ...
Страница 298: ...Chapter 15 295 Annex 15 1 2 Example application Wood scanner ...
Страница 299: ...Chapter 15 296 Annex ...
Страница 300: ...Chapter 15 297 Annex ...
Страница 301: ...Chapter 15 298 Annex ...
Страница 302: ...Chapter 15 299 Annex ...
Страница 303: ...Chapter 15 300 Annex ...
Страница 304: ...Chapter 15 301 Annex ...
Страница 305: ...Chapter 15 302 Annex ...
Страница 306: ...Chapter 15 303 Annex ...
Страница 307: ...Chapter 15 304 Annex 15 1 3 Example application Ramp down detection ...
Страница 308: ...Chapter 15 305 Annex ...
Страница 309: ...Chapter 15 306 Annex ...
Страница 310: ...Chapter 15 307 Annex ...
Страница 311: ...Chapter 15 308 Annex ...
Страница 312: ...Chapter 15 309 Annex ...
Страница 313: ...Chapter 15 310 Annex ...
Страница 314: ...Chapter 15 311 Annex ...
Страница 316: ...Chapter 15 313 Annex 15 3 Precautions 1 Edit a CSV file exported from Setting and Monitoring tool in a text editor ...
Страница 321: ......