Danfoss VACON 3000 Application Manual page 201

VACON® 3000
Application Guide
If you use long motor cables (max. 100 m) with small drives (≤1.5 kW), the motor current that the drive measures can be much
higher than the actual motor current. It is because there are capacitive currents in the motor cable.
7.159 (ID 710) Stall Current
Location in the menu:
• INU application: P3.9.3.2
Use this parameter to set the limit above which the current of the motor must stay for a stall stage to occur.
You can set the value of this parameter between 0.0 and 2*I
parameter P3.1.3.1 Motor Current Limit changes, this parameter is automatically calculated to 90% of the current limit.
The value of the Stall Current must be below the motor current limit.
A
Illustration 40: The stall characteristics settings
A Stall area
7.160 (ID 711) Stall Time Limit
Location in the menu:
• INU application: P3.9.3.3
Use this parameter to set the maximum time for a stall stage.
This parameter is the maximum time for the stall stage to be active before a motor stall fault occurs. The value of this parameter can
be set between 1.0 s and 120.0 s. An internal counter counts the stall time. If the stall time counter value goes above this limit, the
protection causes the drive to trip.
7.161 (ID 712) Stall Frequency Limit
Location in the menu:
• INU application: P3.9.3.4
Use this parameter to set the limit below which the output frequency of the drive must stay for a stall stage to occur.
For a stall state to occur, the output frequency must be below this limit for a certain time.
7.162 (ID 713) Underload Fault
Location in the menu:
• INU application: P3.9.4.1
Use this parameter to select the response of the drive to an 'Underload' fault. If the underload protection function detects that there
is not a sufficient load on the motor, an underload fault occurs.
The motor underload protection makes sure that there is a load on the motor when the drive operates. If the motor loses the load, a
problem can occur in the process. For example, a belt can break or a pump become dry.
Danfoss A/S © 2021.09
N O T I C E
. For a stall status to occur, the current must be higher than this limit. If
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Parameter descriptions
AB319735759636en-000101 / DPD01822 | 201