User V/F Pattern Setting Details
bA.41 User Freq
1 –
bA.48 User Volt
4
Select the arbitrary frequency between the start and the maximum
frequencies to set the user frequency (User Freq x). Also set the
voltage to correspond to each frequency in user voltage (User Volt x).
The 100% output voltage in the figure below is based on the parameter settings of
bA.15 (motor rated voltage). If bA.15 is set to 0 it will be based on the input voltage.
• When a normal induction motor is in use, care must be taken not to configure the
output pattern away from a linear V/F pattern. Non-linear V/F patterns may cause
insufficient motor torque or motor overheating due to over-excitation.
• When a user V/F pattern is in use, forward torque boost (dr.16) and reverse torque
boost (dr.17) do not operate.
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