PLC control inverter - positive and negative transfer chart The inverter -

PLC control frequency converter the positive and negative transfer chart

1. PLC and frequency converter hardware connection circuit diagram

PLC to control frequency converter drive motor and reversing switch quantity way circuit diagram as shown in the figure below.

2。 Inverter parameter Settings

when using PLC control frequency converter, frequency converter have to be related parameters Settings, see the table below.

3。 Write PLC control program

inverter related parameters setting, also written in the programming software of PLC controller control procedures and downloaded to the PLC. PLC control of frequency converter drive motor and reversing PLC program as shown in the figure below.

RS485 communication connection method of frequency converter and PLC diagram

1. A single frequency converter and PLC RS485 communication connection

single frequency converter and PLC RS485 communication connection as shown in the figure below, both in the connection, a device sending terminal ( +、- ) Should the receiving terminal and another device ( +、- ) Connection, the receiving terminal ( +、- ) Should be the sending terminal and another device ( +、- ) The connection.

2。 More than one frequency converter and PLC RS485 communication connection

more than one frequency converter and PLC RS485 communication connection as shown in the figure below, it can achieve a PLC control many sets of the operation of the converter.

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