Danfoss VACON 100 FLOW Series Application Manual page 224

VACON® 100 FLOW
Application Guide
I
T
105%
Illustration 67: The Calculation of the Motor Temperature
A Current
B Fault/Alarm
11.11.3 Motor Stall Protection
The motor stall protection function gives protection to the motor against short overloads. An overload can be caused, for example,
by a stalled shaft. It is possible to set the reaction time of the stall protection shorter than that of the motor thermal protection.
The stall status of the motor is specified with parameters P3.9.3.2 Stall Current and P3.9.3.4 Stall Frequency Limit. If the current is
higher than the limit, and the output frequency is lower than the limit, the motor is in a stall status.
The stall protection is a type of overcurrent protection.
If long motor cables (maximum 100 m) are used 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.
11.11.3.1 (ID 709) Motor Stall Fault
Location in the menu: P3.9.3.1
Use this parameter to select the response of the drive to a 'Motor Stall' fault. If the stall protection detects that the shaft of the motor
is stalled, a motor stall fault occurs.
224 | Danfoss A/S © 2023.08
A
C
D
N O T I C E
B
80%
100%
130%
C Trip area
D Loadability
AB298035655957en-000201 / DPD01083
Parameter Descriptions
t
t