The speed circuit of the frequency converter with a pre-amplifier box

Published:2011/7/5 10:04:00 Author:Borg | Keyword: frequency converter, pre-amplifier box | From:SeekIC

The frequency converter is a new style speed device which came out in recent years. With external units, the converter can expand its functions, so it can meet the technical and practical need. In the circuit fixes a unit of MI converter, i.e the circuit in which the figured FR operation box, setting box, preamplifier box and so on are linked with the converter, and the circuit controls the running of the 3-phase motor. The preamplifier box(FR-FA) can be the current/voltage signal converter or the computing amplifier.



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