ID714
ID715
f
5 Hz
Underload area
Torque
Field weakening
point
Fig. 60: Setting of the minimum load
P3.9.4.3 UNDERLOAD PROTECTION: ZERO FREQUENCY LOAD (ID 715)
Use this parameter to set the minimum torque that the motor needs when the output
frequency of the drive is 0.
If you change the value of parameter P3.1.1.4, this parameter is automatically restored to the
default value.
P3.9.4.4 UNDERLOAD PROTECTION: TIME LIMIT (ID 716)
Use this parameter to set the maximum time for an underload state.
This is the maximum time for the underload state to be active before an underload fault
occurs.
You can set the time limit between 2.0 and 600.0 s.
An internal counter counts the underload time. If the value of the counter goes above this
limit, the protection causes the drive to trip. The drive trips as is set in parameter P3.9.4.1
Underload Fault. If the drive stops, the underload counter goes back to 0.
VACON · 280 PARAMETER DESCRIPTIONS
10
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