1: Frequency arriving sig-
nal (FAR)
2: Frequency level detec-
tion (FDT1)
3: Frequency level detec-
tion (FDT2)
4: Overload pre-alarm (OL)
5: Inverter under voltage
blockade and stop (LU)
6: External fault stop
(EXT)
7: Output frequency arrive
upper limit (FH)
8: Output frequency arrive
lower limit (FL)
9: Inverter zero speed run-
ning
10: Simple PLC running
finished
11: PLC one period run-
ning is completed
12:reach the setting count
value
13: Mid counting value