V/F Curve Selection - Delta C2000 series User Manual

When the frequency is less than Fmin (Pr.01-07 or Pr.01-41), it will operate by this parameter.
When it is set to 0, the AC motor drive will be in waiting mode without voltage output from terminals
U/V/W.
When setting 1, it will execute DC brake by Vmin(Pr.01-08 and Pr.01-42) in V/f, VFPG and SVC
modes. It executes zero-speed operation in VFPG and FOCPG mode.
When it is set to 2, the AC motor drive will run by Fmin (Pr.01-07, Pr.01-41) and Vmin (Pr.01-08,
Pr.01-42) in V/f, VFPG, SVC and FOCPG modes.
In V/f, VFPG and SVC modes
fout
fmin
01-07
0H z
In FOCPG mode, when Pr.01-34 is set to 2, it will act according Pr.01-34 setting.
fout
fmin
01-07

V/f Curve Selection

Settings 0: V/f curve determined by group 01
1: 1.5 power curve
2: Square curve
When setting to 0, refer to Pr.01-01~01-08 for motor 1 V/f curve. For motor 2, please refer to
Pr.01-35~01-42.
When setting to 1 or 2, 2
If motor load is variable torque load (torque is in direct proportion to speed, such as the load of fan
or pump), it can decrease input voltage to reduce flux loss and iron loss of the motor at low speed
with low load torque to raise the entire efficiency.
When setting higher power V/f curve, it is lower torque at low frequency and is not suitable for rapid
acceleration/deceleration. It is recommended Not to use this parameter for the rapid
acceleration/deceleration.
Chapter 12 Description of Parameter Settings|C2000 Series
01-34=0
stop output
0Hz
stop w aiting for output
01-34=0
frequency command
nd rd
and 3 voltage frequency setting are invalid.
12-28
01-34=1
0H z oper ation
(D C br ake)
01-34=1
frequency command
01-34=2
01-34=2
Factory Setting: 0