LSIS LSLV-S100 - Page 225

211
Learning Protection Features
Group
Code
Name
LCD Display
Parameter Setting
Setting range
Unit
OU
31
Multi-function relay 1
item
Relay 1
9
Stall
-
-
33
Multi-function output
1 item
Q1 Define
* The value is displayed on the keypad as .
Stall Prevention Function and Flux Braking Setting Details
Code
Description
Pr.50 Stall Prevent
Stall prevention can be configured for acceleration, deceleration, or while
operating a motor at constant speed. When the top LCD segment is on, the
corresponding bit is set. When the bottom LCD segment is on, the corresponding
bit is off.
Item
Bit Status (On)
Bit Status (Off)
Keypad
LCD keypad
Setting
Function
Bit 4
Bit 3
Bit 2
Bit 1

Stall protection during acceleration

Stall protection while operating at a
constant speed

Stall protection during deceleration

Flux braking during deceleration
Setting
Function
0001
Stall
protection
during
acceleration
If inverter output current exceeds the preset stall level
(Pr. 52, 54, 56, 58) during acceleration, the motor stops
accelerating and starts decelerating. If current level
stays above the stall level, the motor decelerates to the
start frequency (dr.19). If the current level causes
deceleration below the preset level while operating
the stall protection function, the motor resumes
acceleration.
0010
Stall
protection
while
operating at
constant
speed
Similar to stall protection function during acceleration,
the output frequency automatically decelerates when
the current level exceeds the preset stall level while
operating at constant speed. When the load current
decelerates below the preset level, it resumes
acceleration.
0100
Stall
The inverter decelerates and keeps the DC link voltage