ABB ACS 800 Series, Firmware Manual

Page: 191 / 340

Actual signals and parameters
191
30.10 STALL FUNCTION Selects how the drive reacts to a motor stall condition. The protection wakes up
if:
- the drive is at stall limit (defined with parameters
20.03 , 20.13 and 20.14 )
- the output frequency is below the level set with parameter 30.11 and
- the conditions above have been valid longer than the time set with parameter
30.12 STALL TIME.
Note: Stall limit is restricted by internal current limit 03.04
TORQ_INV_CUR_LIM.
FAULT The drive trips on a fault. 1
WARNING The drive generates a warning. The indication disappears in half of the time set
with parameter
30.12 STALL TIME.
2
NO Protection is inactive. 3
30.11 STALL FREQ HI Defines the frequency limit for the stall function. See parameter 30.10 STALL
FUNCTION.
0.5 … 50.0 Hz Stall frequency 50 … 5000
30.12 STALL TIME Defines the time for the stall function. See parameter 30.10 STALL
FUNCTION.
10.00 … 400.00 s Stall time 10 … 400
30.13 UNDERLOAD FUNC Selects how the drive reacts to underload. The protection wakes up if:
- the motor torque falls below the curve selected with parameter
30.15 ,
- output frequency is higher than 10% of the nominal motor frequency and
- the above conditions have been valid longer than the time set with parameter
30.14 .
NO Protection is inactive. 1
WARNING The drive generates a warning. 2
FAULT The drive trips on a fault. 3
30.14 UNDERLOAD TIME Time limit for the underload function. See parameter 30.13 .
0 … 600 s Underload time 0 … 600
30.15 UNDERLOAD
CURVE Selects the load curve for the underload function. See parameter 30.13 .
1 … 5 Number of the load curve 1 … 5
Index Name/Selection Description FbEq
100
80
60
40
20
0
2.4 * ýí
3
2
1
5
4
T
M
/T
N
70%
50%
30%
ýí
(%)
T
M
= Motor torque
T
N
= Nominal motor torque
ƒ
N
= Nominal motor frequency