With CPU ST30 and V20 inverter as an example to explain PLC automatic control

Often encounter need to frequently change based on PLC control inverter frequency, can only choose to use PLC controller communication to a given frequency, through the digital output Q point to control the inverter start-stop positive &negative, so as to realize the PLC controller automatic control.

in the us with CPU ST30 and V20 inverter as an example to explain.

hardware connection as shown in the figure below:

then inverter how to set parameters to cooperate?

before the debug parameter to restore the factory default frequency converter operation, the method is as follows:

accessibility P0003 V20 set the parameters, the level must be changed to experts can only access all application parameters, as follows:

set start-stop command source for external P0700, terminal control method is as follows:

set the function of the external input terminals P0701 to P0704 method is as follows:

Settings P0727 line type, as follows:

choose P1000 set frequency setting, as follows:

set the inverter communication related parameters,

set parameters after is to write the next procedure is as follows:

after watching this article believe with V20 inverter communication applications, other control program to do according to the control requirement.

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