Activate relay output 1when AI loss not running ABB ACS550
I have ABB ACS550 VFD driver, i want to programm relay output 1 to energize it when AI2 is not connected to AI2, i activated parameter 1401 --> 26, when i connected acual signal (AI2) for macro 6 and remove it, the relay output 1 not energized, i want use it if analog input does not input signal because of malfunction, the relay output must energize to give indication. But in this case the relay did not energized. I want help because i am controlling air pressure with PID function embedded with VFD.
You can try to modify the range of the analog values in group 11.07, and next in parameter 13.04.
If you assign in this two location values greater than zero ( for example 3-4%), when you remove the analog input 2 the drive activate the relay that you have assigned in 14.01.
One different solution is to use parameter 32.01 selected to AI2 and use the upper- lower limit (32.02- 32.03) to discriminate the action of relay, in this case you must assign the function 14.01 to 8 or 9, depending of the values that you have programmed.
Hope this help you