What kind of command or signal PLC gives to the VFD to make the motor run ?

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dineshdeshmuk

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What kind of command or signal PLC gives to the VFD to make the motor run at a particular speed ?
 

Besides speed controlling what else controlling does the PLC does to VFD ?
 

What things a PLC control of a VFD ?

As far as i know , the PLC sends AO signal from its AO contact to the VFD' AI contact for the speed reference.

the PLC also send a DO signal from its DO contact to the VFD' DI contact for the run command.

the PLC behaves a master to the VFD

Other than these things what other else things a PLC control of the VFD ?
 

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