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13771165220
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樓主  發(fā)表于: 2018-01-18 21:02
50w小風(fēng)扇。
單相或三相都可以。
需要plc來(lái)調速，可能要用到pid
不走通訊，越簡(jiǎn)單越好。
選哪種控制器？
市場(chǎng)變頻器問(wèn)了下好像電機功率太小了，不大匹配。
gzcjx555
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1樓  發(fā)表于: 2018-01-19 10:33
plc使用PWM指令，加一個(gè)固態(tài)繼電器，風(fēng)扇使用直流風(fēng)扇，高頻率的通斷就變相的降低了電壓，風(fēng)扇自然就慢下來(lái)了
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