GD350A series high-performance multifunction VFD
-161-
Function
code
Name
Description
Default Modify
identification to be performed properly.
Setting range: 0.0–100.0% (of the motor rated
torque)
P03.44
Enabling inertia
identification
0: No operation
1: Enable
0
◎
P03.45–
P03.46
Reserved
0–65535
0
●
P04 group––V/F control
P04.00
V/F curve setting of
motor 1
This group of function code defines the V/F
curve of motor 1 to meet the needs of different
loads.
0: Straight-line V/F curve, applicable to
constant torque loads
1: Multi-point V/F curve
2: Torque-down V/F curve (power of 1.3)
3: Torque-down V/F curve (power of 1.7)
4: Torque-down V/F curve (power of 2.0)
Curves 2 – 4 are applicable to the torque loads
such as fans and water pumps. You can adjust
according to the characteristics of the loads to
achieve best performance.
5: Customized V/F (V/F separation); in this
mode, V can be separated from F and F can
be adjusted through the frequency setting
channel set by P00.06 or the voltage setting
channel set by P04.27 to change the
characteristics of the curve.
Note: In the following figure, V
b
is the
motor rated voltage and f
b
is the motor
rated frequency.
Output voltage
Output frequency
Linear type
Square type
Torque step-down V/F curve (1.3
th
order)
Torque step-down V/F curve (1.7
th
order)
Torque step-down V/F curve (2.0
nd
order)
0
◎
