User Manual EM303B General Purpose Inverter F1-04 ~Fd-08 parameters are enabled when F0-15=35. User defined V/F curve is determined by the curve set by percentage of input frequency and percentage of output voltage. It is linearized at different segments in different input ranges. F1-04 base frequency is the final reached frequency of V/F curve. It is also the corresponding value to maximum output voltage. Input frequency percentage: Frequency base F base =100.0%. Output voltage percentage: Rated voltage U e =100.0%. Usually frequency base is the same as the rated frequency of motor. 1. If the slop of V/F curve is too big, overcurrent may occur. 2.
EM303B takes the motor frequency as the frequency base. 100.00% voltage is motor rated voltage. Please make sure that the motor frequency and voltage setting are correct. 8.14.2 Auto-Torque Boost Fd-09 and Fd-10 are to boost the low frequency torque of inverter, and to output high torque at low frequency. The parameters cannot be set too big, otherwise, it will cause overcurrent. If overcurrent fault is caused by the parameters, Fd-09 and Fd-10 can be set smaller. See the Figure below for setting method: 100% Voltage 80% 20% Torque Boost Voltage Fd-09 10% Cut-off Frequency of Torque Boost Remarks: If Fd-09=10%, its low frequency voltage curve is shown as the bold dotted line.
8.14.3 Output Voltage Control in VF Separation Mode 20% 100% Fd-10 80% Frequency 156 No. Function Range Unit Default Type Fd-09 Torque Boost Voltage 0.00～10.00 % 0.00 ● Fd-10 Cut-off Frequency of Torque Boost 0.00～100.00 % 20.00 ● No. Function Range Unit Default Type Output Voltage Setting Mode in VF Separation Mode 0:Disabled 0 〇 1:Numeric Setting(FC-15) 2: VP Setting Fd-11 3: VS Setting 4: VF Setting 5: IS Setting 6: IF Setting