Danfoss VACON 3000 Application Manual page 158

VACON® 3000
Application Guide
A Default: Nominal voltage of the motor
B Field weakening point
C Linear
U[V]
Un
ID603
A
ID605
P2
ID606
P1
ID604
Illustration 12: The programmable U/f curve
A Default: Nominal voltage of the motor
B Field weakening point
When the parameter Motor Type has the value PM motor (Permanent Magnet Motor), this parameter is automatically set to the
value Linear.
When the parameter Motor Type has the value Induction Motor, and when this parameter is changed, these parameters are set to
their default values:
• P3.1.4.2 Field Weakening Point Frequency
• P3.1.4.3 Voltage at Field Weakening Point
• P3.1.4.4 U/f Midpoint Frequency
• P3.1.4.5 U/f Midpoint Voltage
• P3.1.4.6 Zero Frequency Voltage
7.9 (ID 109) Automatic Torque Boost
Location in the menu:
• INU application: P3.1.4.9
Use this parameter with a process that has a high starting torque because of friction.
The voltage to the motor changes in relation to the necessary torque. It makes the motor give more torque at the start and when
the motor operates at low frequencies.
The torque boost affects the linear U/f curve. For the best result, do the identification run and activate the programmable U/f curve.
7.10 (ID 110) Motor Nominal Voltage
Location in the menu:
• INU application: P3.1.1.1
Find the value U on the nameplate of the motor. Find out whether the motor connection is Delta or Star.
n
7.11 (ID 111) Motor Nominal Frequency
Location in the menu:
158 | Danfoss A/S © 2021.09
D Squared
E Default: Nominal frequency of the motor
P3
B
C
f[Hz]
ID602
C Default: Nominal frequency of the motor
Parameter descriptions
AB319735759636en-000101 / DPD01822