Cause : Analog input comes when an analog input is taking place in operating mode 4..20mA and a wire break has occurred. The number of the analog input concerned is shown in fault value (r949).

Check the following connection:

1. analog input -X102:27, 28, 29.

2. analog input 2 -X102:30 ,31, 32.

Check the following parameter:

1. P650 CU-AE configuration

2. P651 CU-AE smoothing 

3. P652 CU-AE offset