Group Motor 1 Vf Control Parameter - Danfoss VFD500 Series Manual

Chapter 5 Function code
P12.00 VF curve
➢ When the VF curve is straight line and power curve, the frequency-voltage curve is as follows:
Output
Voltage
1.7powe
Motor rated
Voltage
1.3
power
Straight line V/F
0
!
➢ Multi-stage line type VF curve：
➢ VF full separation
The output voltage and output frequency are completely independent. The output frequency is determined by
the frequency source. The output voltage is determined by P12.20. Suitable for applications such as variable
frequency power or torque motors.
➢ VF semi-isolated
At this point the ratio of output voltage and output frequency given by the voltage source, the formula is as
follows:：
Multi-point VF Frequency
P12.01
P12.02 Multi-point VF Voltage 0(V0)
Multi-point VF Frequency
P12.03
P12.04 Multi-point VF Voltage 1(V1)
Multi-point VF Frequency
P12.05
P12.06 Multi-point VF Voltage 2(V2)
VFD500 high performance vector control frequency inverter user manual

12 Group Motor 1 VF control parameter

0：linear VF
1：Multi-point VF
2：VF to the 1.3
3：1.7 power
4：2.0 power
5：VF complete separation
6：VF Half separation
2.0
power
r
Output
frequenc
y
Motor rated
frequency
Figure 1：Straight line VF and 1.3、1.7、2.0 power VF
Output
voltage
Motor rated
voltage
V3
V2
V1
V0
F F F
0
0 1 2
Figure 2：Ø multi-stage line type VF curve
0.00Hz～multi-point VF curve F1(P12.03)
1(F0)
0.0%～100.0%
multi-point VF curve F0(P12.01)～multi-point
1(F1)
VF curve F2(P12.05)
0.0%～100.0%
multi-point VF curve F1(P12.03)～multi-point
1(F2)
VF curve F3(P12.08)
0.0%～100.0%
Output
frequen
cy
F
Motor rated
3
frequency
72
★
0
☆
0.00Hz
☆
0.0%
50.00Hz ☆
☆
100.0%
50.00Hz ☆
☆
100.0%