Delta VFD007FP4EA-41 - Page 231

Chapter 12 Description of Parameter Settings|CFP2000 Series
12.1-01-10
chosen. Choose a V/F curve suitable for your application then set Pr01-43 by following the V/F
curve chosen. The set values of Pr01-00 ~Pr01-08 can be verified and fine-tuned.
NOTE
1. If the V/F curve is not selected properly, it may result motor to generate insufficient torque or may lead
to high current output due to overfluxing.
2. When the motor drive is reset by Pr00-02, Pr01-43 is reset as well.
Setting SPEC.
Feature Purpose
0 V/f curve determined Constant torque
For normal application. This required torque for
load is the same no matter the rotor speed of
motor.
1 1.5
th
V/F curve
Variable torque
curve, the torque in low
speed is relatively low, which is not recommended
V/F curve to the 2 power for high
acceleration/deceleration application.
2 2
nd
V/F curve
3
60Hz (voltage saturation in
50Hz)
Constant torque
For normal application. This required torque for
load is the same no matter the rotor speed of
motor.
4
72Hz (voltage saturation in
60Hz)
5 3
r
d
decreasing (50Hz)
Decreasing
torque
For fans, pumps, the required torque derating
relative to the load.
6 2
r
d
decreasing (50Hz)
7 3
r
d
decreasing (60Hz)
8 2
n
d
decreasing (60Hz)
9 Mid. Starting torque (50Hz)
High starting
torque
Select high starting torque when:
 Wiring between the drive and motor(exceeds
150 m)
 A large amount of starting torque is required
(like lift)
 An AC reactor is installed in the output side of
the drive
10 High starting torque (50Hz)
11 Mid. Starting torque (60Hz)
12 High starting torque (60Hz)
13
90Hz (voltage saturation in
60Hz)
Constant output
operation
The curve for operation above 60Hz. To operate
above 60Hz, the output voltage is fixed.
14
120Hz (voltage saturation in
60Hz)
15
180Hz (voltage saturation in
60Hz)
 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
nd
and 3
rd
voltage frequency setting are invalid.
 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.
0
20 40 60
80 100
100
90
80
70
60
50
40
30
20
10
01-0
2
Voltage %
1.5 power curve
Square curve
01-01
Frequency%