78 ACS 160 User’s Manual
3007 ZERO SPEED LOAD
This parameter defines the maximum allowable current at zero speed relative to 9906
MOTOR NOM CURR.
Refer to Figure 14.
3008 BREAK POINT
Break point of motor load curve. Refer to Figure 14 for an example of a motor load curve. See Figure 16.
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 15.
0 =
NOT SEL
Stall protection is not used.
1 =
FAULT
When the protection is activated the ACS 160 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 15 Motor stall protection.
3010 STALL CURRENT
Current limit for stall protection. Refer to Figure 15.
3011 STALL FREQ HI
This parameter sets the frequency value for the stall function.
Refer to Figure 15.
3012 STALL TIME
This parameter sets the time value for the stall function.
3013 UNDERLOAD FUNCTION
Removal of motor load may indicate a process malfunction. The protection is activated if:
• The motor torque drops below the load curve selected by parameter 3015
UNDERLOAD CURVE.
• This condition has lasted longer than the time set by parameter 3014
UNDERLOAD TIME.
• Output frequency is higher than 10 % of the nominal frequency of the motor and higher than 5 Hz.
0 =
NOT SEL
Underload protection is not used.
1 =
FAULT
When the protection is activated the ACS 160 coasts to stop. Fault indication is displayed.
2 =
WARNING
A warning indication is displayed.
3014 UNDERLOAD TIME
Time limit for underload protection.
Code Description
Frequency
I
OUT
3010 STALL CURRENT
3011 STALL FREQ HI
Stall region
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