User Manual of EM760 High-Performance Inverter Instructions on parameters related to VF control F05.00=0: linear V/F It is suitable for ordinary constant-torque loads. F05.00=1: multi-point V/F It is suitable for special loads such as dehydrators, centrifuges and cranes. Any V/F relationship curve can be obtained by setting the parameters F05.01 to F05.06. F05.00=2/3: 1.3 th power/1.7 th power of V/F It is a VF curve between the linear VF and square VF. F05.00=4: square V/F It is suitable for centrifugal loads such as fans and pumps. F05.00=5: VF complete separation mode In this case, the output frequency and output voltage of the inverter are independent of each other.
The output frequency depends on the frequency source, and the output voltage is determined by F05.07 (VF separation voltage source). The VF complete separation mode is usually applied in induction heating, inverter power supply, torque motor control, etc. F05.00=6: VF semi-separation mode In this case, Vand Fare proportional, but their proportional relationship can be set by the voltage source F05.07. In addition, the relationship between V and F is also related to the rated voltage and rated frequency of the motor in the F1 group. Assuming that the voltage source input is X (X is 0 to 100%), the relationship between the output voltage V and frequency F of the inverter is:
V/F=2 * X * (rated voltage of the motor)/(rated frequency of the motor) 201 Function code Function code name Parameter description Unit Default setting Attribute F05.00 V/F curve setting 0: straight line V/F 1: multi-point broken line V/F 2: 1.3-power V/F 3: 1.7-power V/F 4: square V/F 5: VF complete separation mode (Ud = 0, Uq = K * t = voltage of separation voltage source) 6: VF semi-separation mode (Ud = 0, Uq = K * t = F/Fe * 2 * voltage of separation voltage source) 0 O