The frequency converter cannot be used properly! ! Urgent! ! !
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One of the reaction kettles in my factory is equipped with an inverter that increases the frequency from a low level to the normal level; once the normal frequency is reached, it automatically switches to a fixed frequency. The problem now is that it cannot switch to the fixed-frequency state when frequency conversion is done to the normal frequency. (We use an inverter to achieve a gradual acceleration; once normal operation is reached, we switch to a fixed frequency.) Could anyone please answer my question? Thank you! !
This post was last edited by zhaohh3211 on 2010-10-15 07:48. Please clarify the electrical details, the manufacturing processes, and some relevant data; this will help others answer your questions.
What is the normal frequency, and what is the fixed frequency? Does the inverter stop working once it is switched to the fixed frequency?
Thank you all for your concern; the problem has been solved! It’s just a mistake; it’s not a problem with the inverter! Thank you!
Is the sensor unstable during measurement, or are the conditions not met?
Reply to 4# wanyuanchen: What negligence? Could you tell me?
It should be said so that everyone can share it.
It’s just a less obvious switch that wasn’t turned on, haha… a simple mistake
The inverter mentioned by the poster is actually being used as a soft starter. Both the normal frequency and the fixed frequency estimation are 50Hz, right? It seems that the owner’s “variable frequency/normal frequency” switch hasn’t been changed. Guessed!