Hi,
I using inverter G120. 
I want protecd your motor is better. I reduced "Current limit -P640" from 1.5Ie to 1.25Ie.

But, when i run motor again, it have problem trip motor (before not have same this problem), and faulse item 7801. And I see current value at that moment ~ 28A. 
Motor have configuration is Udm=380V, Idm=12.9A, P =5.5KW and P640 before = 1.5x12.9=19.35
Now P640 after = 1.25*12.9 = 16.12
Please help me, 
What parameters do I need to change with the P640 ? 
How long time is the trip motor of ?

The current draw is high at 28 Amperes, and will current limit, or trip.

What is the application, pump, fan, conveyor?

For mechanical loads, Sensor less Vector Control, SLVC will be better, as the frequency of current measurement is quick, responding to the current variation more accurately.

Asynchronous motors are rugged, direct online currents can be very high, limiting the over current to 1.25, will not necessarily protect the motor to any degree, and may create 'nuisance' tripping.

Tractor