Danfoss VACON NX, Application Manual

Page: 240 / 360

Table 118: Selections for Motor Control Mode in Different Applications
Selec-
tion Standard Appli-
cation Local/Remote
Control Applica-
tion Multi-step Speed
Control Applica-
tion PID Control Ap-
plication Multi-purpose Con-
trol Application Pump and Fan
Control Appli-
cation
0 VACON
®
NXS/P VACON
®
NXS/P VACON
®
NXS/P VACON
®
NXS/P VACON
®
NXS/P VACON
®
NXS
1 VACON
®
NXS/P VACON
®
NXS/P VACON
®
NXS/P VACON
®
NXS/P VACON
®
NXS/P VACON
®
NXS
2 Not used Not used Not used Not used VACON
®
NXS/P NA
3 VACON
®
NXP VACON
®
NXP VACON
®
NXP VACON
®
NXP VACON
®
NXP NA
4 NA NA NA NA VACON
®
NXP NA
Selec-
tion
number Selection name Description
0 Frequency con-
trol Drive frequency reference is set to output frequency without slip compensation. Finally, motor
load defines the motor actual speed.
1 Speed control Drive frequency reference is set to motor speed reference. The motor speed remains the same
regardless of motor load. Slip is compensated.
2 Torque control Speed reference is used as maximum speed limit and the motor produces torque within speed
limit to achieve torque reference.
3 Speed crtl
(closed loop) Drive frequency reference is set to motor speed reference. The motor speed remains the same
regardless of motor load. In Closed Loop control mode, speed feedback signal is used to achieve
optimum speed accuracy.
4 Torque crtl
(closed loop) Speed reference is used as the maximum speed limit that depends on the torque speed limit CL
(ID1278) and motor produces torque within speed limit to achieve torque reference. In Closed
Loop control mode, speed feedback signal is used to achieve optimum torque accuracy.
10.278 (ID 601) Switching Frequency
Location in the menu: P2.6.9 (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 switching frequency of the AC drive.
When increasing the switching frequency, the capacity of the AC drive reduces. To reduce capacitive currents in the motor cable,
when the cable is long, we recommend using a low switching frequency. To reduce the motor noise, use a high switching frequen-
cy.
The range of this parameter depends on the size of the AC drive:
Table 119: Size-dependent Switching Frequencies
Type Min. [kHz] Max. [kHz] Default [kHz]
0003-0061 NX_2 1.0 16.0 10.0
0075-0300 NX_2 1.0 10.0 3.6
0003-0061 NX_5 1.0 16.0 10.0
0072-0520 NX_5 1.0 6.0 3.6
0004-0590 NX_6 1.0 6.0 1.5
AB296635287482en-000301 / DPD00903 240 | Danfoss A/S © 2023.02
Parameter Descriptions
VACON® NX All-in-One
Application Guide