Vacon 20 SERIES User Manual

vacon • 49 Parameter description
3
2: programmable
The U/f curve can be programmed with three different points: Zero frequency voltage (P1),
Midpoint voltage/frequency (P2) and Field weakening point (P3).
Programmable U/f curve can be used if more torque is needed at low frequencies. The optimal
settings can automatically be achieved with Motor identification run.
Note: motor identification automatically sets this parameter to 2.
Figure 7. Programmable curve.
P9.4 U/F MID POINT FREQUENCY
Enabled if P9.3= 2.
Note: motor identification automatically sets this parameter.
P9.5 U/
F MID POINT VOLTAGE
Enabled if P9.3= 2.
Note: motor identification automatically sets this parameter.
P9.6 V
OLTAGE AT F0
Motor voltage at frequency zero.
Note: motor identification automatically sets this parameter.
P9.7 R
S VOLTAGE DROP
Voltage drop on stator windings, at motor nominal current, defined as % of nominal voltage.
Value affects motor torque estimation, slip compensation and voltage boost.
U[V]
f[Hz]
P2
P3
P1
Default: Nominal
voltage of the motor
Linear
Field
weakening
point
Default:
Nominal frequency
of the motor

Vacon 20 SERIES Specifications

General

Output Voltage	0 to Input Voltage
Storage Temperature	-40°C to +70°C
Dimensions	Varies by model
Weight	Varies by model
Power Range	0.25 kW to 18.5 kW
Voltage Range	200 V to 480 V
Control Method	Sensorless vector control
Protection Class	IP20
Ambient Temperature	-10°C to +50°C
Communication Options	Modbus, CANopen
EMC Filter	Integrated
STO (Safe Torque Off)	Yes
Input Voltage	208-240 V, 380-480 V
Protection Features	Overvoltage, Undervoltage, Overcurrent, Overtemperature
Operating Temperature	-10°C to +50°C
Humidity	5% to 95% non-condensing