Mitsubishi frequency converter FR-F700 series and pressure relaxer control
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Ladies and gentlemen; the Mitsubishi frequency converters of the FR-F700 series are controlled via pressure transmitters. To save energy, a pressure variable frequency drive is installed at the pump outlet where the frequency converter is used, to control the pressure at 0.4 MPa. The pressure transmitter is a two-wire EJA transmitter. It cannot be controlled now. I would like to ask how to connect it when it’s in use. The wiring is between terminal 5 and terminal 4; when Pr.79=4, the transmitter does not display any information. Are there any other settings required? As far as I understand, it’s necessary to configure the power distribution – how is that done? Are there any other settings? Provide a detailed explanation of how to carry out installation and debugging. Please give me some advice, thank you
The range of the pressure transmitter is 0-2 MPa. How to set the range settings for the frequency converter?