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Code Description
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
.
3010
STALL CURRENT
Figure 11
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.
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
I
= output current
O
I
= nominal current of the motor
N
f
= output frequency
O
f
BRK
Figure 12 Thermal protection trip times when parameters 3005
, 3006
TIME
MOT LOAD CURVE
.
STALL TIME
I
OUT
Stall region
Motor stall protection.
I
/ I
O
N
0
0.2
0.4
= break point frequency (parameter 3008
and 3007
3011
STALL FREQ HI
Trip time
0.6
0.8
1.0
1.2
ZERO SPEED LOAD
ƒ
60 s
90 s
180 s
300 s
600 s
∞
f
/ f
O
BRK
BREAK POINT
MOT THERM
have default values.
)
47
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