Danfoss VACON NX, Инструкция по применению

Страница: 256 / 360

ID714
ID715
f
5 Hz
e
3
0
b
u
0
6
4
C
B
A
Illustration 77: Setting of the Minimum Load
A Torque
B Underload area
C Field weakening point
10.347 (ID 715) Underload Protection: Zero Frequency Load
Location in the menu: P2.7.19 (Standard Application, Local/Remote Control Application, Multi-step Speed Control Application, PID
Control Application, Multi-purpose Control Application, Pump and Fan Control Application
Use this parameter to set the minimum torque that the motor needs when the output frequency of the drive is 0.
The torque limit can be set between 5.0–150.0% x T
nMotor
. See Illustration 77 . Changing the value of parameter ID 113 ( Motor nomi-
nal current ), restores this parameter automatically to the default value. See 10.623 Parameters of Underload Protection (IDs 713–
716) .
10.348 (ID 716) Underload Protection: Time Limit
Location in the menu: P2.7.20 (Standard Application, Local/Remote Control Application, Multi-step Speed Control Application, PID
Control Application, Multi-purpose Control Application, Pump and Fan Control Application
Use this parameter to set the maximum time for an underload state. It is the maximum time for the underload state to be active
before an underload fault occurs.
It is possible to set the time limit between 2.0 s 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
ID 713 . If the drive stops, the underload counter goes back to 0. See Illustration 78 and
10.623 Parameters of Underload Protection (IDs 713–716) .
AB296635287482en-000301 / DPD00903 256 | Danfoss A/S © 2023.02
Parameter Descriptions
VACON® NX All-in-One
Application Guide