Speed reference through Analog input ATV930

[Mohit1809]

I have connected Analog output (2wire) from my PLC to analog input 2 of atv930. It recieves signal from PLC but frequency reference on HMI of VFD flickers. 

So my question is,

1) does this vfd accepts direct reference from PLC or not?

2) i want to give frequency reference from PLC can anyone suggest required parameters to achieve the same?

Thank you in advance

[Bastian_Schmitz]

You could set the speed reference via Anloag Output of PLC/ Analog Input of VSD. This is in genereal no problem. In standard configuration AI1 is the input which is defined for the reference speed. If you want to use AI2 you have to change the parameter FR1. IF you use AI2 or AI3 you need also to configure the type of analog signal.