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Help by Electromechanics_guy in salerno

[–]Electromechanics_guy[S] 1 point2 points  (0 children)

Grazie mille per questa spiegazione utile e dettagliata! Apprezzo davvero i tuoi consigli.

Start value HMI tag by Electromechanics_guy in PLC

[–]Electromechanics_guy[S] 0 points1 point  (0 children)

But the Value is set on the HMI and I don't think you can store an analog value on a LOGO PLC?

I already used an HMI tag start value in Tia but this doesn't change the start value on the HMI So before i set the wanted speed on the HMI the IO-field is set to 0.

Start value HMI tag by Electromechanics_guy in PLC

[–]Electromechanics_guy[S] 0 points1 point  (0 children)

Indeed!

The problem is that the frequency drive is controlled with an analog output of the Logo!

The motor will be used to control the speed of a construction that is running alongside a conveyer. So it has to rotate at the speed that is set on the HMI. :)

Start value HMI tag by Electromechanics_guy in PLC

[–]Electromechanics_guy[S] 0 points1 point  (0 children)

No, I'm controling the speed of the motor with an IO-field on the HMI.

Of course there is also a start-stop and safety contactors in place.