LSIS LSLV-S100 - Stall Prevention and Flux Braking

210
Learning Protection Features
Note
Overload warnings warn of an overload before an overload fault trip occurs. The overload warning
signal may not work in an overload fault trip situation, if the overload warn level (OL Warn Level) and
the overload warn time (OL Warn Time) are set higher than the overload trip level (OL Trip Level) and
overload trip time (OL Trip Time).
6.1.3 Stall Prevention and Flux Braking
The stall prevention function is a protective function that prevents motor stall caused by overloads.
If a motor stall occurs due to an overload, the inverter operation frequency is adjusted
automatically. When stall is caused by overload, high currents are induced in the motor may cause
motor overheat or damage the motor and interrupt operation of the motor-driven devices.
To protect the motor from overload faults, the inverter output frequency is adjusted automatically,
based on the size of load.
Group
Code
Name
LCD Display
Parameter Setting
Setting range
Unit
Pr
50
Stall prevention and
flux braking
Stall Prevent
0000*
-
bit
51
Stall frequency 1
Stall Freq 1
60.00
Start frequency–
Stall Freq 1
Hz
52
Stall level 1
Stall Level 1
180
30-250
%
53
Stall frequency 2
Stall Freq 2
60.00
Stall Freq 1–Stall
Freq 3
Hz
54
Stall level 2
Stall Level 2
180
30-250
%
55
Stall frequency 3
Stall Freq 3
60.00
Stall Freq 2–Stall
Freq 4
Hz
56
Stall level 3
Stall Level 3
180
30-250
%
57
Stall frequency 4
Stall Freq 4
60.00
Stall Freq 3–
Maximum
frequency
Hz
58
Stall level 4
Stall Level 4
180
30-250
%