Stall Prevention - Larsen & Toubro C*2000 Series User Manual

Chapter 10 Protective Functions
 Overload trip
Group Code
Function
F56
group 1
F57
F58
 Set F56 to 1 in the function group 1
Inverter output is turned off when motor is overloaded.

Inverter output is turned off when motor current reaches to over trip level

(F57) for overload trip time (F58).

10.3 Stall prevention

Group Code Parameter
Function
F59
group 1
F60
I/O Group
I55
 During acceleration: Motor starts deceleration when current exceeding the
value set in F60 flows.
During constant run: Motor decelerates when current exceeding the value

set in F60.
 During deceleration: Motor deceleration is stopped when inverter DC link
voltage rises above a certain voltage level.
F60: The value is set as the percent of motor rated current (H33).

 I55: Multi-function relay can transmit the stall status to the parts outside.
The output can be achieved if the motor is connected though F59 is not
selected for stall prevention.
10-3
Parameter
Overload trip select
Overload trip level
Overload trip time
Stall prevention select
Stall prevention level
Multi-function relay
function select
Set Value Range
1 0 ~ 1
- 30 ~ 200 180
- 0.0~ 60.0 60.0
Set Value Range
- 0 ~ 7
- 30 ~ 200
7 0 ~ 19
Initial Unit
1
%
sec
Initial Unit
0
150 %
17
Cx2000 AC Drive