ABB ACS 140, Programming Manual, Page: 55 / 70

47
CO
MP
LE
T
E
P
ARAME
T
E
R
S
Figure 12 Thermal protection trip times when parameters 3005
MOT THERM
TIME
, 3006
MOT LOAD CURVE
and 3007
ZERO SPEED LOAD
have default values.
3009 STALL FUNCTION
This parameter defines the operation of the stall protection. The protection is
activated if the output current becomes too high compared to output frequency,
refer to Figure 11.
0 =
NOT SEL
Stall protection is not used.
1 =
FAULT
When the protection is activated the ACS 140 coasts to stop. Fault indication is
displayed.
2 =
WARNING
A warning indication is displayed. The indication disappears in half the time set
by parameter 3012
STALL TIME
.
.
Figure 11 Motor stall protection.
3010 STALL CURRENT
Current limit for stall protection. Refer to Figure 11.
3011 STALL FREQ HI
This parameter sets the frequency value for the stall function.
Refer to Figure 11.
3012 STALL TIME
This parameter sets the time value for the stall function.
Code Description
I
OUT
3010
STALL CURRENT
Stall region
ƒ
3011
STALL FREQ HI
I
O
/ I
N
f
O
/ f
BRK
I
O
= output current
I
N
= nominal current of the motor
f
O
= output frequency
f
BRK
= break point frequency (parameter 3008
BREAK POINT
)
60 s
90 s
180 s
300 s
600 s
∞
3.5
3.0
2.5
2.0
1.5
1.0
0.5
Trip time
0
0 0.2 0.4 0.6 0.8 1.0 1.2