6. Description of Parameters                                                                                                                   
- 142 -
Function Code Parameter Name Setting Range Default
F9-49
Fault protection 
action selection 3
Units position: User-dened fault 1 (Err27) 00000
Tens position: User-dened fault 2 (Err28)
Hundreds position: User-dened fault 3 (Err29)
Thousands position: Load lost (Err30)
0: Coast to stop
1: Stop according to the stop mode
2: Continue to run at 7% of rated motor frequency 
and restore to the frequency reference if the load 
recovers
Ten thousands position: PID feedback lost during 
drive running (Err31)
Same as F9-47
F9-50
Fault protection 
action selection 4
0: Coast to stop
1: Stop according to the stop mode
2: Continue to run
00000
Units  position: Too large speed feedback error 
(Err42)
Tens position: Motor overspeed (Err43)
Hundreds position: Initial position fault (Err51)
Thousands position: Speed feedback fault (Err52)
Ten thousands position: Reserved
These function parameters set action mode of the AC drive at occurrence of fault.
0:  Coast to stop
The AC drive displays Err** and directly stops.
1:  Stop according to the stop mode
The AC drive displays A** and stops according to stop mode. After stop, the AC drive 
displays Err**.
2:  Continue to run
The AC drive continues to run and displays A**. The running frequency is set in F9-54.
Function Code Parameter Name Setting Range Default
F9-54
Frequency selection 
for continuing to run 
upon fault
0: Current running frequency
1: Frequency reference
2: Frequency upper limit
3: Frequency lower limit
4: Backup frequency upon abnormality
0
F9-55
Backup frequency 
upon fault
0.0% to 100.0% (max. frequency) 100.0%
These function parameters dene running frequency of the AC drive when “Continue to run” is 
selected at occurrence of fault.