Danfoss VACON 3000 Application Manual page 200

VACON® 3000
Application Guide
7.157 (ID 708) Motor Thermal Loadability
Location in the menu:
• INU application: P3.9.2.5
Use this parameter to set the thermal loadability of the motor. For example, if the value is set to 130%, the motor goes to the nomi-
nal temperature with 130% of the motor nominal current.
I
T
105%
Illustration 39: The Calculation of the Motor Temperature
A Current
B Fault/Alarm
7.158 (ID 709) Motor Stall Fault
Location in the menu:
• INU application: 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.
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.
200 | Danfoss A/S © 2021.09
A
C
D
B
80%
100%
130%
C Trip area
D Loadability
AB319735759636en-000101 / DPD01822
Parameter descriptions
t
t