Danfoss VACON NX, Application Manual

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10.9.2 Setting the Motor Nominal Values Manually
To start with high torque from 0 Hz, set the motor nominal values (Parameter group 2.1).
Procedure
Set the motor magnetizing current:
Run the motor using 2/3 of motor nominal frequency as the frequency reference.
Read the motor current in the
Monitoring menu or use VACON
®
NCDrive for monitoring.
Set this current as the motor magnetizing current (ID 612).
Set the U/f ration selection (ID 108) to value 2 (programmable U/f curve).
Run the motor with zero frequency reference and increase the motor zero-point voltage (ID 606) until the motor current is
same as the motor magnetizing current.
If the motor is in a low frequency area for only short periods, it is possible to use up to 65% of the motor nominal current.
Set the midpoint voltage (ID 605) to 1.4142*ID 606 and midpoint frequency (ID 604) to value ID 606/100%*ID 111.
If needed, activate the speed control or U/f optimization (Torque boost).
If needed, activate both the speed control and U/f optimization.
10.10 (ID 110) Motor Nominal Voltage
Location in the menu:
P2.6 (Basic Application)
P2.1.6 (Standard Application, Local/Remote Control Application, Multi-Step Speed Control Application, PID Control Application,
Multi-Purpose Control Application, Pump and Fan Control Application)
Find the value U
n
on the nameplate of the motor. Find out whether the motor connection is Delta or Star.
This parameter sets the voltage at the field weakening point ( ID 603 ) to 100% * U
nMotor
.
10.11 (ID 111) Motor Nominal Frequency
Location in the menu:
P2.7
(Basic Application)
P2.1.7 (Standard Application, Local/Remote Control Application, Multi-Step Speed Control Application, PID Control Application,
Multi-Purpose Control Application, Pump and Fan Control Application)
Find the value f
n
on the nameplate of the motor.
This parameter sets the field weakening point ( ID 602 ) to the same value.
10.12 (ID 112) Motor Nominal Speed
Location in the menu:
P2.8 (Basic Application)
P2.1.8
(Standard Application, Local/Remote Control Application, Multi-Step Speed Control Application, PID Control Application,
Multi-Purpose Control Application, Pump and Fan Control Application)
Find the value n
n
on the nameplate of the motor.
10.13 (ID 113) Motor Nominal Current
Location in the menu:
P2.9
(Basic Application)
P2.1.9 (Standard Application, Local/Remote Control Application, Multi-Step Speed Control Application, PID Control Application,
Multi-Purpose Control Application, Pump and Fan Control Application)
Find the value I
n
on the nameplate of the motor.
If magnetization current is provided, also set parameter ID 612 before making the Identification run (VACON
®
NXP only).
10.14 (ID 114) Stop Button Activated
Location in the menu:
AB296635287482en-000301 / DPD00903 | 171 Danfoss A/S © 2023.02
Parameter Descriptions
VACON® NX All-in-One
Application Guide